manuale stazione di servizio

MANUALE STAZIONE DI SERVIZIO
****** - ******
XEVO 400ie
MANUALE
STAZIONE DI
SERVIZIO
XEVO 400ie
The descriptions and illustrations given in this publication are not binding. While the basic specifications
as described and illustrated in this manual remain unchanged, PIAGGIO-GILERA reserves the right, at
any time and without being required to update this publication beforehand, to make any changes to
components, parts or accessories, which it considers necessary to improve the product or which are
required for manufacturing or construction reasons.
Not all versions shown in this publication are available in all countries. The availability of single versions
should be checked at the official Piaggio sales network.
"© Copyright 2005 - PIAGGIO & C. S.p.A. Pontedera. All rights reserved. Reproduction of this publication
in whole or in part is prohibited."
PIAGGIO & C. S.p.A. - Q.C.S./After sales V.le Rinaldo Piaggio, 23 - 56025 PONTEDERA (Pi)
www.piaggio.com
MANUALE STAZIONE DI
SERVIZIO
XEVO 400ie
This service station manual has been drawn up by Piaggio & C. S.p.A. to be used by the workshops of
Piaggio-Gilera dealers. It is assumed that the user of this manual for maintaining and repairing Piaggio
vehicles has a basic knowledge of mechanical principles and vehicle repair technique procedures. Any
significant change to vehicle characteristics or to specific repair operations will be communicated by
updates to this manual. Nevertheless, no mounting work can be satisfactory if the necessary equipment
and tools are unavailable. It is therefore advisable to read the sections of this manual concerning special
tools, along with the special tool catalogue.
N.B. Provides key information to make the procedure easier to understand and carry out.
CAUTION Refers to specific procedures to carry out for preventing damages to the vehicle.
WARNING Refers to specific procedures to carry out to prevent injuries to the repairer.
Personal safety Failure to completely observe these instructions will result in serious risk of personal
injury.
Safeguarding the environment Sections marked with this symbol indicate the correct use of the vehicle
to prevent damaging the environment.
Vehicle intactness The incomplete or non-observance of these regulations leads to the risk of serious
damage to the vehicle and sometimes even the invalidity of the guarantee.
INDEX OF TOPICS
CHARACTERISTICS
CHAR
MAINTENANCE
MAIN
TROUBLESHOOTING
TROUBL
ELECTRICAL SYSTEM
ELE SYS
ENGINE FROM VEHICLE
ENG VE
ENGINE
ENG
INJECTION
INJEC
SUSPENSIONS
SUSP
BRAKING SYSTEM
BRAK SYS
COOLING SYSTEM
COOL SYS
CHASSIS
PRE-DELIVERY
TIME
CHAS
PRE DE
TIME
INDEX OF TOPICS
CHARACTERISTICS
CHAR
XEVO 400ie
Characteristics
Maintenance rules
•
Use original PIAGGIO spare parts and lubricants recommended by the Manufacturer. Nonoriginal or non-conforming spares may damage the vehicle.
•
Use only the special tools designed for this scooter.
•
Always use new gaskets, sealing rings and split pins upon reassembly.
•
After removal, clean the components using non-flammable or low fire-point solvent. Lubricate all the work surfaces except the tapered couplings before refitting.
•
After reassembly, check that all components have been installed properly and that they are
in good working order.
•
For removal, overhaul and reassembly operations use only tools provided with metric measures. Metric bolts, nuts and screws are not interchangeable with coupling members with
English measurement. Using unsuitable coupling members and tools may damage the
scooter.
•
Should any interventions to the scooter electrical system be required, check that the electrical connections - especially earth and battery connections - have been implemented
properly.
Vehicle identification
Chassis prefix
ZAPM52101
Engine prefix
M521M
CHAR - 7
XEVO 400ie
Characteristics
Dimensions and mass
WEIGHTS AND DIMENSIONS
Specification
Kerb weight
Desc./Quantity
171 ± 6 kg
Engine
ENGINE
Specification
Type
Bore x stroke
Cubic capacity
Compression ratio
Timing system
Valve clearance
Engine idle speed
Start-up
LUBRICATION
FINAL REDUCTION GEAR
Muffler
Fuel supply
MAX Power
MAX torque
Cooling
CHAR - 8
Desc./Quantity
Single-cylinder, 4-stroke
85.8 X 69 mm
399 cm³
10.6 ± 0.5 : 1
Four valves, single overhead camshaft, chain-driven.
Inlet: 0.15 mm
Outlet: 0.15 mm
1,500 ± 100 rpm
Electric
Engine lubrication with trochoidal pump (inside the crankcase),
oil filter and pressure adjustment by-pass.
Gear reduction unit in oil bath.
Absorption-type exhaust muffler with catalytic converter and
lambda probe.
Electronic injection with Ø 38-mm throttle body and electric fuel
pump.
24 kW at 7,250 rpm
38 Nm at 5,250 rpm
Forced coolant circulation system.
XEVO 400ie
Characteristics
Transmission
TRANSMISSION
Specification
TRANSMISSION
Desc./Quantity
Automatic expandable pulley variator with torque server, Vbelt, automatic clutch.
Capacities
CAPACITY
Specification
Engine oil
Transmission oil
Cooling system fluid
Fuel tank (reserve)
Desc./Quantity
1.7 l
250 cm³
~ 1.8 l
approx. 12 l (approx. 2 l)
Electrical system
ELECTRICAL SYSTEM
Specification
Ignition
Ignition advance
Spark plug
Alternative spark plug
Battery
Desc./Quantity
Electronic, inductive, high efficiency ignition, integrated with the
injection system, with variable advance and separate HV coil.
Three-dimensional map managed by control unit
CHAMPION RG 6 YC
NGK CR7EKB
12V-12Ah
Frame and suspensions
CHASSIS AND SUSPENSIONS
Specification
Frame
Front suspension
Rear suspension
Desc./Quantity
Tubular and steel sheets.
Hydraulic telescopic fork with Ø 35-mm stem
Two double-acting shock absorbers, adjustable to four positions at preloading.
Brakes
BRAKES
Specification
Front brake
Rear brake
Desc./Quantity
Ø 240-mm double disc brake with hydraulic control operated
by the handlebar right-hand lever.
Ø 240-mm disc brake with hydraulic control operated by the
handlebar left-side lever.
Wheels and tyres
WHEELS AND TYRES
Specification
Wheel rim type
Front tyre
Desc./Quantity
Light alloy rims.
Tubeless 120/70 - 14'' 55P
CHAR - 9
XEVO 400ie
Characteristics
Specification
Rear tyre
Front tyre pressure (with passenger)
Rear tyre pressure (with passenger)
Desc./Quantity
Tubeless 140/70 - 14'' 68S
2.3 bar (-)
2.6 bar (-)
N.B.
CHECK AND ADJUST TYRE PRESSURE WITH TYRES AT AMBIENT TEMPERATURE. ADJUST
PRESSURE ACCORDING TO THE WEIGHT OF RIDER AND ACCESSORIES.
CAUTION
IT IS MANDATORY TO ADOPT EXCLUSIVELY "S" CLASS TYRES, WHICH GUARANTEE CORRECT VEHICLE PERFORMANCE AT THE DIFFERENT SCOOTER SPEEDS. USING ANY OTHER
TYRE MAY RESULT IN VEHICLE INSTABILITY. IT IS ADVISABLE TO USE TYRE TYPES RECOMMENDED BY PIAGGIO.
Overhaul data
Assembly clearances
Cylinder - piston assy.
HEIGHT AT WHICH THE DIAMETER SHOULD BE MEASURED
Specification
A
B
Desc./Quantity
43.2 mm
43 mm
CYLINDER- PISTON
Specification
Cylinder diameter C
Piston Ø P
Desc./Quantity
85.8 - +0.018 -0.01 mm
85.768 ± 0.014 mm
CYLINDER - PISTON
COUPLING CATEGORIES
Name
Cylinder- Piston
Cylinder- Piston
Cylinder- Piston
Cylinder- Piston
CATEGORIES OF COUPLING
N.B.
CHAR - 10
Initials
A
B
C
D
Cylinder
85.790÷85.797
85.797÷85.804
85.804÷85.811
85.811÷85.818
Piston
85.754÷85.761
85.761 ÷ 85.768
85.768÷85.775
85.775÷85.782
Play on fitting
0.029÷0.043
0.029÷0.043
0.029÷0.043
0.029÷0.043
XEVO 400ie
Characteristics
THE PISTON MUST BE INSTALLED WITH THE ARROW FACING TOWARDS THE EXHAUST SIDE,
THE PISTON RINGS MUST BE INSTALLED WITH THE WORD «TOP» OR THE STAMPED MARK
FACING UPWARDS.
Piston rings
*Fit rings «2» and «3» with the word «TOP» facing upwards.
** Position the port of the rings as shown here.
***Value «A» of sealing ring inside the cylinder.
Check the size of the sealing ring opening:
Compression ring: 0.15 ÷ 0.35 mm. Max. value 0.5 mm
Oil scraper ring: 0.25 ÷ 0.50 mm. Max. value 0.65 mm
Oil scraper ring: 0.25 ÷ 0.50 mm. Max. value 0.65 mm
Rings/housing coupling clearances:
Carefully clean the sealing ring housings.
Place a thickness gauge between the ring and the
housing as shown in the drawing and check the
coupling clearances.
Top ring Standard coupling clearance:
0.01÷0.06 mm
Maximum clearances allowed after use: 0.10
mm
CHAR - 11
XEVO 400ie
Characteristics
Intermediate ring Standard coupling clearance:0.02÷0.07 mm
Maximum clearances allowed after use: 0.10
mm
Oil scraper ring Standard coupling clearance:
0.01÷0.06 mm
Maximum clearances allowed after use: 0.10
mm
Replace the piston if clearances exceed the maximum limits specified in the table.
Crankcase - crankshaft - connecting rod
Diameter of crankshaft bearings.
Measure the bearings on both axes x-y.
CRANKSHAFT
Specification
Cat. 1
Cat. 2
Desc./Quantity
Standard diameter: 40.020÷40.026
Standard diameter: 40.026÷40.032
Crankshaft alignment
Specific tooling
020335Y Magnetic support for dial gauge
MAX. ADMISSIBLE DISPLACEMENT
Specification
A=
B=
C=
D=
CHAR - 12
Desc./Quantity
0.15 mm
0.010 mm
0.010 mm
0.10 mm
XEVO 400ie
Characteristics
Characteristic
crankshaft / crankcase axial clearance:
0.1 ÷ 0.405 mm
AXIAL CLEARANCE BETWEEN CRANKSHAFT AND CONNECTING ROD
Name
Transmission-side
shoulder
Half-shaft, transmission
side
Connecting rod
Flywheel-side shoulder
Flywheel-side half-shaft
Complete crankshaft
Description
Dimensions
1±0.025
Initials
A
Quantity
D = 0.20 - 0.50
20.9 -0.05
B
D = 0.20 - 0.50
22 -0.10 -0.15
1.8±0.025
19.6 -0.05
65.5 +0.10 -0.05
C
F
E
G
D = 0.20 - 0.50
D = 0.20 - 0.50
D = 0.20 - 0.50
D = 0.20 - 0.50
Crankcase / countershaft coupling
Besides considering it should match the crankshaft, the crankcase is chosen according to the centre
to centre distance between the seat of the crankshaft and that of the contra-rotating shaft.
Both the centre to centre distance and the pair of gears driving the contra-rotating shaft are divided into
two types (A and B) to be matched (A with A and B with B).
CHAR - 13
XEVO 400ie
Characteristics
This selection is useful to keep the difference between the working distance of the gears and their
distance without clearance at a given value in order to avoid abnormal noise.
TYPE A
Specification
Centre to centre distance of the gears without clearance
Centre to centre distance on the crankcase
Desc./Quantity
76.937 ÷ 76.867
77.022 ÷ 76.992
TYPE B
Specification
Centre to centre distance of the gears without clearance
Centre to centre distance on the crankcase
Desc./Quantity
76.907 ÷ 76.837
76.992 ÷ 76.962
The gears with centre to centre distance without clearance between 76.867 and 76.907 are considered
universal and can be fitted to either crankcase type.
Either the pair of gears or the crankcase is identified with the letter referring to the type (on the crankcase, this mark is found at the cylinder mouth, flywheel side).
Slot packing system
Shimming system for keeping the compression ratio
DISTANCE «A» IS A PROTRUSION OR RECESS VALUE OF
THE PISTON CROWN WITH RESPECT TO THE CYLINDER
PLANE.
DISTANCE «A» HELPS DETERMINE THE THICKNESS OF
GASKET «B» THAT HAS TO BE FITTED TO THE CYLINDER
HEAD IN ORDER TO RESTORE COMPRESSION RATIO.
BASE GASKET «B» MUST BE THICKER THE MORE THE
PLANE FORMED BY THE PISTON TOP PROTRUDES
FROM THE PLANE FORMED BY THE CYLINDER HEAD. ON
THE OTHER HAND, THE MORE THE PISTON TOP IS RECESSED INTO THE CYLINDER TOP PLANE, THE SMALLER THE GASKET THICKNESS.
Characteristic
Compression ratio
10.6 ± 0.5 : 1
BASE GASKET THICKNESS
Name
«A» MEASURE TAKEN
«A» MEASURE TAKEN
«A» MEASURE TAKEN
Measure A
- 0.185 - - 0.10
- 0.10 - + 0.10
+ 0.10 ÷ + 0.185
Thickness
0.4 ± 0.05
0.6 ± 0.05
0.8 ± 0.05
N.B.
VALUES INDICATED WITH «-» REFER TO PISTON CROWN RECESSES WITH RESPECT TO THE
CYLINDER PLANE.
N.B.
DISTANCE «A» MUST BE MEASURED WITHOUT ANY GASKET FITTED AT «B»
CHAR - 14
XEVO 400ie
Characteristics
Products
RECOMMENDED PRODUCTS TABLE
Product
AGIP ROTRA 80W-90
Description
Rear hub oil
AGIP CITY HI TEC 4T
Oil to lubricate flexible transmissions
(throttle control)
Oil for air filter sponge
AGIP FILTER OIL
AGIP GP 330
AGIP CITY HI TEC 4T
Calcium complex soap-based grease
with NLGI 2; ISO-L-XBCIB2
Engine oil
AGIP BRAKE 4
SPECIAL AGIP PERMANENT fluid
Brake fluid
coolant
AGIP FORK 7.5 W
AGIP GREASE PV2
Fork oil
Grease for the steering bearings, pin
seats and swinging arm
Specifications
SAE 80W/90 Oil that exceeds the requirements of API GL3 specifications
Oil for 4-stroke engines
Mineral oil with specific additives for increased adhesiveness
Grease (brake control levers, throttle
grip)
SAE 5W-40, API SL, ACEA A3, JASO MA
Synthetic oil
FMVSS DOT 4 Synthetic fluid
Monoethylene glycol-based antifreeze
fluid, CUNA NC 956-16
Grade 7.5 W
White anhydrous-calcium based grease
to protect roller bearings; temperature
range between -20 C and +120 C; NLGI
2; ISO-L-XBCIB2.
CHAR - 15
INDEX OF TOPICS
MAINTENANCE
MAIN
XEVO 400ie
Maintenance
Follow these steps to reset the service icons:
1. With the key set to OFF, hold down the
"SET" button and turn the key to ON : the
"BELT" and "SERVICE" icons start flashing.
2. Push the "CLOCK" button for less than 1
second and the icons are displayed sequentially. The icon selected remains ON and the
other is no longer displayed.
3. Press the "CLOCK" button again for more
than 3 seconds to reset the relative maintenance step and the icon is no longer displayed.
Maintenance chart
EVERY 2 YEARS
60'
Action
Coolant - change
Brake fluid - change
AFTER 1,000 KM
60'
Action
Safety locks - check
Throttle lever - adjustment
Engine oil - change
Electrical system and battery - check
Coolant level - check
Brake fluid level - check
Engine oil - replacement
Brake pads - check condition and wear
Tyre pressure and wear - check
Vehicle and brake test - road test
Hub oil - change
Steering - Check
AFTER 5,000 KM; 25,000 KM; 35,000 KM; 55,000 KM; 65,000 KM
10'
Action
Engine oil - level check/ top-up
Brake pads - check condition and wear
Centre stand - lubrication
AFTER 10,000 KM; 50,000 KM; 70,000 KM
120'
Action
Safety locks - check
Driving belt - replacement
Throttle lever - adjustment
MAIN - 17
XEVO 400ie
Maintenance
Action
Air filter - clean
Engine oil - change
Electrical system and battery - check
Coolant level - check
Brake fluid level - check
Engine oil - replacement
Brake pads - check condition and wear
Sliding block / variable speed rollers - change
Tyre pressure and wear - check
Vehicle and brake test - road test
Hub oil - check
Suspensions - check
Steering - Check
Centre stand - lubrication
Spark plugs - replacement
AFTER 15,000 KM; 45,000 KM; 75,000 KM
10'
Action
Engine oil - level check/ top-up
Brake pads - check condition and wear
Centre stand - lubrication
AFTER 20,000 KM; 40,000 KM; 60,000 KM AND 80,000 KM
190'
Action
Spark plugs - replacement
Driving belt - replacement
Throttle lever - adjustment
Air filter - check
Engine oil - change
Valve clearance - check
Electrical system and battery - check
Coolant level - check
Engine oil - replacement
Brake pads - check condition and wear
Sliding block / variable speed rollers - change
Tyre pressure and wear - check
Vehicle and brake test - road test
Hub oil - change
Suspensions - check
Steering - Check
Centre stand - lubrication
Brake fluid level - check
30,000 KM
200'
Action
Safety locks - check
Driving Belt - replacement
Throttle lever - adjustment
Air filter - cleaning
Engine oil - change
Electrical system and battery - check
Coolant level - check
Brake fluid level - check
Engine oil - replacement
Hub oil - check
Brake pads - check condition and wear
Sliding block / variable speed rollers - change
Tyre pressure and wear - check
Vehicle and brake test - road test
Suspensions - check
MAIN - 18
XEVO 400ie
Maintenance
Action
Steering - Check
Centre stand - lubrication
Spark plugs - replacement
Spark plug
Remove the port on the left-hand side panel of the
vehicle by undoing the fixing screw and using a
small screwdriver in the rear recess shown in the
figure, then do the following:
- Disconnect the HV wire cap «A» of the spark
plug;
- Unscrew the spark plug using the wrench supplied;
- Upon refitting, place the spark plug at the required angle and tighten by hand until it is finger
tight;
- Use the wrench only for final tightening of the
spark plug;
- Place cap «A» fully over the spark plug.
- Refit the port making sure the rear hook is inserted.
WARNING
THE SPARK PLUG MUST BE REMOVED WHEN THE ENGINE IS COLD. REPLACE THE SPARK PLUG AS INDICATED IN THE SCHEDULED MAINTENANCE TABLE. THE
USE OF ELECTRONIC CENTRAL UNITS AND OF NONCOMPLIANT ELECTRONIC IGNITIONS OR SPARK PLUGS
OTHER THAN THOSE PRESCRIBED MAY SERIOUSLY
DAMAGE THE ENGINE.
N.B.
USING SPARK PLUGS OTHER THAN THE INDICATED
TYPE OR SHIELDLESS SPARK PLUG CAPS CAN CAUSE
ELECTRICAL SYSTEM FAILURES.
Characteristic
Spark plug
CHAMPION RG 6 YC
Alternative spark plug
NGK CR7EKB
Electric characteristic
Electrode gap
0.7 ÷ 0.8 mm
MAIN - 19
Maintenance
Locking torques (N*m)
Spark plug 12 ÷ 14
Hub oil
Check
-Park the vehicle on its centre stand on flat ground;
- Remove the oil dipstick «A», dry it with a clean
cloth and put it back into its hole tightening it
completely;
Remove the dipstick and check that the oil level is
slightly over the second notch starting from the
lower end; if the level is below the MAX mark, it
needs to be filled up with the right amount of hub
oil.
-Screw up the oil dipstick again and make sure it
is locked properly into place.
Replacement
-Remove the oil filler cap «A».
- Unscrew the oil drainage cap "B" and drain out
all the oil.
- Screw in the drainage cap again and fill the hub
with the prescribed oil.
Recommended products
AGIP ROTRA 80W-90 Rear hub oil
SAE 80W/90 Oil that exceeds the requirements of
API GL3 specifications
Characteristic
Rear hub oil
Capacity approximately 250 cc
MAIN - 20
XEVO 400ie
XEVO 400ie
Maintenance
Air filter
Proceed as follows:
1. From the inside of the rear wheel housing, undo
the three screws «A».
2. Undo the six screws «B».
3. Remove the air filter cover «C».
4.Remove the air filter «D».
MAIN - 21
Maintenance
XEVO 400ie
- Wash the sponge with water and mild soap.
- Dry it with a clean cloth and short blasts of compressed air.
- Soak it in a mixture of 50% petrol and 50% specified oil.
- Gently squeeze the filtering element with your
hands but do not wring it; allow it to drip dry and
then refit.
CAUTION
IF THE VEHICLE IS USED ON DUSTY ROADS, IT IS NECESSARY TO SERVICE THE AIR FILTER MORE OFTEN TO
AVOID DAMAGING THE ENGINE.
Recommended products
AGIP FILTER OIL Oil for air filter sponge
Mineral oil with specific additives for increased adhesiveness
Engine oil
In 4T engines, the engine oil is used to lubricate the distribution elements, the bench bearings and the
thermal group. An insufficient quantity of oil can cause serious damage to the engine.
In all 4T engines, the deterioration of the oil characteristics, or a certain consumption should be considered normal, especially if during the run-in period. Consumption levels in particular can be influenced
by the conditions of use (e.g.: oil consumption increases when driving at "full throttle".
MAIN - 22
XEVO 400ie
Maintenance
Replacement
Change oil and replace filter as indicated in the
scheduled maintenance table. Empty the engine
by draining the oil through drainage plug «B».
To facilitate oil drainage, loosen the cap/dipstick
«A».
Once all the oil has drained through the drainage
hole, unscrew and remove the oil cartridge filter
«C ».
Make sure the pre-filter and drainage plug O-rings
are in good conditions.
Lubricate them and refit the mesh filter and the oil
drainage plug, screwing them up to the prescribed
torque.
Refit the new cartridge filter being careful to lubricate the O-ring before fitting it.
Change the engine oil.
Since a certain quantity of oil still remains in the
circuit, engine oil must be added through plug
«A». Then start the scooter, leave it running for a
MAIN - 23
Maintenance
few minutes and switch it off: after five minutes
check the level and if necessary top up without
exceeding the MAX level. The cartridge filter must
be replaced every time the oil is changed. Use new
oil of the recommended type for topping up and
changing purposes.
N.B.
THE ENGINE MUST BE HOT WHEN THE OIL IS CHANGED.
Recommended products
AGIP CITY HI TEC 4T Engine oil
SAE 5W-40 Synthetic oil that exceed the requirements of API SL, ACEA A3, JASO MA specifications
Locking torques (N*m)
Engine oil filter 12 - 16 Engine oil drainage plug
24 ÷ 30
Check
This operation must be carried out with the engine
cold and following the procedure below:
- Place the vehicle on its centre stand and on flat
ground.
- Unscrew the cap/dipstick «A», dry it with a clean
cloth and reinsert it, screwing it all the way
down.
- Remove the cap/dipstick again and check that
the level is between the min and max reference
marks; top-up, if required.
If the check is carried out after the vehicle has
been used, and therefore with a hot engine, the
level line will be lower; in order to carry out a correct check, wait at least 10 minutes after the engine has been stopped so as to get the correct
level.
MAIN - 24
XEVO 400ie
XEVO 400ie
Maintenance
Oil top up
The oil should be topped up after having checked
the level and in any case by adding oil without
ever exceeding the MAX. level.
Restoring the level from the MIN to the MAX marks
requires approx. 400 m³ of oil.
Engine oil filter
CAUTION
DO NOT DISPOSE OF OIL IN THE ENVIRONMENT. OIL, GASKET AND FILTER SHOULD BE DISPOSED OF ACCORDING TO THE REGULATIONS IN FORCE.
WARNING
AVOID TOUCHING PARTS OF THE ENGINE WHEN HOT, AS THIS MAY CAUSE BURNS.
The cartridge filter must be replaced every time the oil is changed. Use new oil of the recommended
type for topping up and changing purposes.
Make sure the pre-filter and drainage plug O-rings are in good conditions. Lubricate them and refit the
mesh filter and the oil drainage plug, screwing them up to the prescribed torque. Refit the new cartridge
filter being careful to lubricate the O-ring before fitting it. Change the engine oil.
Recommended products
AGIP CITY HI TEC 4T Engine oil
SAE 5W-40 Synthetic oil that exceed the requirements of API SL, ACEA A3, JASO MA specifications
Oil pressure warning light
The vehicle is equipped with a warning light on the
instrument panel that lights up when the key is
turned to the «ON» position. However, this light
should switch off once the engine has been started.
If the light turns on during braking, at idling
speed or while turning a corner, it is necessary
to check the oil level and the lubrication system.
MAIN - 25
Maintenance
Checking the ignition timing
- Remove the plastic cap on the flywheel cover
-Turn the flywheel until the reference mark «T» on
the rotor matches the reference mark on the flywheel cover as shown in the figure (TDC). Make
sure that the 4V reference point on the camshaft
control pulley is aligned with the reference point on
the head as shown in the second figure. If the reference is opposite the indicator on the head, turn
the crankshaft once more.
For the use of this reference mark, remove the
spark plug and turn the engine in the direction that
is the reverse of the normal direction using a calliper spanner applied to the camshaft command
pulley casing.
Checking the valve clearance
- To check the clearance in the valves collimate
the references between the cam shaft control pulley and head.
- Use a feeler to make sure the clearance between
the valve and register screw correspond to the indicated values. If the clearance does not correspond, adjust it by loosening the lock nut using a
screwdriver on the set screw as shown in the figure.
Characteristic
Valve clearance
Inlet: 0.15 mm
Outlet: 0.15 mm
MAIN - 26
XEVO 400ie
XEVO 400ie
Maintenance
Cooling system
Adding engine coolant.
Check coolant level when the engine is cold as indicated in the scheduled maintenance table, following the steps below:
Place the scooter on its centre stand and on flat
ground.
- Undo the screw shown in the figure and remove
the expansion tank cap on RHS.
- Top up if the fluid level is near or below the MIN
level edge. The liquid level must always be between the MIN and MAX level.
-The coolant consists of an ethylene glycol and
corrosion inhibitor based 50% de-ionised waterantifreeze solution mix.
CAUTION
DO NOT EXCEED THE MAX LEVEL WHEN FILLING SO
THAT COOLANT DOES NOT SPILL OVER THE EXPANSION TANK WHEN THE VEHICLE IS BEING USED.
Recommended products
SPECIAL AGIP PERMANENT fluid Coolant
Monoethylene glycol based antifreeze solution,
CUNA NC 956-16
Braking system
MAIN - 27
Maintenance
Level check
The front and rear brake fluid reservoirs are both
positioned on the handlebars. Proceed as follows:
- Rest the vehicle on its centre stand with the handlebars perfectly horizontal;
- Check the fluid level through the sight glass
«C». A certain lowering of the level is caused by
wear on the pads.
Top-up
Proceed as follows: Loosen the screw «B» and lift
the plastic cover «A» in order to access the brake
fluid reservoir. Loosen the two fixing screws and
remove the reservoir cover; top-up with the recommended fluid without exceeding the 'MAX.'
mark.
This procedure applies to the rear brake pump topup operation; follow the same procedure for the
front brake pump.
Under standard climatic conditions, replace coolant as indicated in the scheduled maintenance
table.
WARNING
ONLY USE DOT 4 CLASS BRAKE FLUIDS. BRAKING CIRCUIT FLUIDS ARE HIGHLY CORROSIVE. MAKE SURE
THAT IT DOES NOT COME INTO CONTACT WITH THE
PAINTWORK.
CAUTION
AVOID CONTACT OF THE BRAKE FLUID WITH YOUR
EYES, SKIN, AND CLOTHING. IN CASE OF ACCIDENTAL
CONTACT, WASH WITH WATER.
Recommended products
AGIP BRAKE 4 Brake fluid
FMVSS DOT4 Synthetic fluid
MAIN - 28
XEVO 400ie
XEVO 400ie
Maintenance
Headlight adjustment
Proceed as follows:
1. Position the unloaded vehicle, in running order
and with the tyres inflated to the prescribed pressure, on a flat surface 10 m away from a half-lit
white screen; ensure that the longitudinal axis of
the vehicle is perpendicular to the screen;
2. Turn on the headlight and check that the borderline of the projected light beam is lower than
9/10 and higher than 7/10 of the distance from the
ground to the centre of the vehicle headlight;
3. If not, adjust the headlight by turning the central
screw «A» placed behind the Piaggio badge.
N.B.
THE ABOVE PROCEDURE COMPLIES WITH THE EUROPEAN STANDARDS REGARDING MAXIMUM AND MINIMUM HEIGHT OF LIGHT BEAMS. REFER TO THE STATUTORY REGULATIONS IN FORCE IN EVERY COUNTRY
WHERE THE VEHICLE IS USED.
Checking the end compression pressure
- Remove the spark plug cap when the engine is cold.
- Remove the ignition spark plug.
- Fit a compression test gauge into the spark plug seat using a 10mm spark plug union at the proper
tightening torque.
- Turn the switch to «ON», wait a few seconds and then disconnect the rpm-timing sensor connector
to disable the injector and spark plug operation.
- Let the engine run using the starter motor and with the throttle body in fully open position as long as
the pressure gauge value is steady.
- If the pressure exceeds the level specified, remove the tool and proceed with the vehicle refitting.
- If the pressure is below the level specified, check the rpm at which the test is carried out; if less than
450 rpm, check the start-up system.
MAIN - 29
Maintenance
XEVO 400ie
If the compression end pressure is below the standard, remove the pressure gauge coupling and pour
some oil into the combustion chamber, turn the engine (preferably manually) to lubricate the cylinder.
Repeat the pressure test:
If the new values are still low, check valves for correct sealing.
Characteristic
Compression ratio
10.6 ± 0.5 : 1
Locking torques (N*m)
Spark plug 12 ÷ 14
MAIN - 30
INDEX OF TOPICS
TROUBLESHOOTING
TROUBL
XEVO 400ie
Troubleshooting
This section makes it possible to find what solutions to apply when troubleshooting.
For each failure, a list of the possible causes and pertaining operations is given.
Engine
Excessive oil consumption/Exhaust smoke
EXCESSIVE CONSUMPTION
Possible Cause
Operation
Wrong valve adjustment
Adjust the valve clearance properly
Overheated valves
Remove the head and the valves, grind or replace the valves
Misshapen/worn valve seats
Replace the head unit
Worn cylinder, Worn or broken piston rings
Replace the piston cylinder assembly or piston rings
Worn or broken piston rings or piston rings that have not been
Replace the piston cylinder unit or just the piston rings
fitted properly
Oil leaks from the couplings or from the gaskets
Check and replace the gaskets or restore the coupling seal
Worn valve oil guard
Replace the valve oil guard
Worn valve guides
Check and replace the head unit if required
Insufficient lubrication pressure
LOW LUBRICATION PRESSURE
Possible Cause
By-Pass remains open
Oil pump with excessive clearance
Oil filter too dirty
Oil level too low
Operation
Check the By-Pass and replace if required. Carefully clean the
By-Pass area.
Perform the dimensional checks on the oil pump components
Replace the cartridge filter
Restore the level adding the recommended oil type
Transmission and brakes
Clutch grabbing or performing inadequately
IRREGULAR CLUTCH PERFORMANCE OR SLIPPAGE
Possible Cause
Faulty clutch
Operation
Check that there is no grease on the masses. Check that the
clutch mass faying surface with the bell is mainly in the centre
with equivalent characteristics on the three masses. Check that
the clutch casing is not scored or worn in an anomalous way
Insufficient braking
INEFFICIENT BRAKING SYSTEM
Possible Cause
Inefficient braking system
Fluid leakage in hydraulic braking system
TROUBL - 32
Operation
Check the pad wear (1.5 min). Check that the brake discs are
not worn, scored or warped. Check the correct level of fluid in
the pumps and change brake fluid if necessary. Check there is
no air in the circuits; if necessary, bleed the air. Check that the
front brake calliper moves in axis with the disc.
Failing elastic fittings, plunger or brake pump seals, replace
XEVO 400ie
Troubleshooting
Possible Cause
Brake disc slack or distorted
Operation
Check the brake disc screws are locked; measure the axial shift
of the disc with a dial gauge and with wheel mounted on the
scooter.
Brakes overheating
BRAKES OVERHEATING
Possible Cause
Defective plunger sliding
Brake disc slack or distorted
Clogged compensation holes on the pump
Swollen or stuck rubber gaskets
Operation
Check calliper and replace any damaged part.
Check the brake disc screws are locked; use a dial gauge and
a wheel mounted on the vehicle to measure the axial deviation
of the disc.
Clean carefully and blast with compressed air
Replace gaskets.
Steering and suspensions
Heavy steering
STEERING HARDENING
Possible Cause
Steering hardening
Operation
Check the tightening of the top and bottom ring nuts. If irregularities continue in turning the steering even after making the
above adjustments, check the seats in which the ball bearings
rotate: replace them if they are recessed or if the balls are flattened.
Excessive steering play
EXCESSIVE STEERING CLEARANCE
Possible Cause
Torque not conforming
Operation
Check the tightening of the top and bottom ring nuts. If irregularities continue in turning the steering even after making the
above adjustments, check the seats in which the ball bearings
rotate: replace them if they are recessed or if the balls are flattened.
Noisy suspension
NOISY SUSPENSION
Possible Cause
Malfunctions in the suspension system
Operation
If the front suspension is noisy, check: the efficiency of the front
shock absorber; the condition of the ball bearings and relevant
lock-nuts, the limit switch rubber buffers; and the movement
bushings. In conclusion, check the tightening torque of the
wheel hub, the brake calliper, the shock absorber disc in the
attachment to the hub and the steering tube.
TROUBL - 33
XEVO 400ie
Troubleshooting
Suspension oil leakage
OIL LEAKAGE FROM SUSPENSION
Possible Cause
Faulty or broken seals
TROUBL - 34
Operation
Replace the shock absorber Check the condition of wear of the
steering covers and the adjustments.
INDEX OF TOPICS
ELECTRICAL SYSTEM
ELE SYS
Electrical system
KEY
1. Magneto flywheel
2. Engine stop switch
3. Diode
4. Side stand button
5. Key switch
6. Electric fan
7. Engine stop remote control switch
8. Voltage regulator
9. Main fuses
10.12V-180W Plug socket
11. Auxiliary fuses
12. Stop button on front brake
13. Stop button on rear brake
14.Immobilizer remote control switch
15. 12V-12Ah Battery
16. Starter motor
17. Start-up remote control switch
18. Boot actuator
19. Boot opening switch
ELE SYS - 36
XEVO 400ie
XEVO 400ie
Electrical system
20. Starter button
21. Saddle opening actuator
22.Saddle opening control unit
23. Wiring for anti-theft device
24. «HAZARD» button
25. Turn indicator switch
26. Light switch
27. Turn indicator control device
28. Light switch remote control
29. Helmet compartment light bulb
30. License plate bulb
31. Rear left turn indicator
32. Rear light
A. Stop light bulbs
B. Tail light bulbs
33. Rear right turn indicator
34. Front left turn indicator
35. Front light
A. Tail light bulbs
B. High-beam light bulb
C. Low-beam light bulb
36. Front right turn indicator
37. «MODE» button
38. Helmet compartment light switch
39. Headlight remote control
40. Boot light switch
41. Horn
42. Horn button
43. Injection load remote control
44.Ambient temperature sensor
45. Fuel injector
46. Fuel level transmitter
47. Oil pressure sensor
48. Instrument panel
49.Wheel turning sensor
50. HV coil
51. Immobilizer aerial
52. Decoder
ELE SYS - 37
Electrical system
XEVO 400ie
53. Injection ECU
54. Intake air temperature sensor
55. Fuel pump
56. Diagnosis connector
Ar = Orange, Az = Sky Blue, Bi = White, Bl = Blue, Gi = Yellow, Gr = Grey, Ma = Brown, Ne = Black,
Ro = Pink, Rs = Red, Ve = Green, Vi = Purple
Components arrangement
6 - Electric fan: placed at the front of the vehicle,
remove the shield back plate to reach it and remove the radiator to extract it.
ELE SYS - 38
XEVO 400ie
Electrical system
7 / 14 / 28 / 39 / 43 / 57 / 27 - Remote control
switches: engine stop / immobilizer / light switch /
headlight / injection load / electric fan / turn indicator control device: remove the instrument panel
bottom section to reach them.
8 / 17 - Voltage regulator / Start-up remote control
switch: remove the right fairing to reach them
9 / 11 / 15 / 56 - Main fuses / Auxiliary fuses /
12V-12Ah Battery / Connector for diagnosis: remove the cover located in the helmet compartment
to reach them.
10 - 12V-180W Plug socket
ELE SYS - 39
Electrical system
22 - Saddle opening control unit: remove the left
side panel to reach it.
41 - Horn: remove the wheel housing lower clamp
to reach it.
44 - Ambient temperature sensor: remove the front
headlight assembly to reach it.
45 / 60 - Fuel injector / Engine temperature sensor:
remove the inspection door in the helmet compartment to reach them.
ELE SYS - 40
XEVO 400ie
XEVO 400ie
Electrical system
46 / 55 - Fuel level transmitter / Fuel pump: remove
the central chassis cover to reach them.
47 - Oil pressure sensor.
49 - Wheel turning sensor: the sensor is placed on
the engine crankcase, near the left shock absorber
lower attachment.
50 - HV coil: remove the central chassis cover to
reach it.
ELE SYS - 41
Electrical system
51 / 52: Immobilizer aerial / Decoder: remove the
legshield and the shield back plate to reach them.
53 - Injection ECU: remove the front shield to
reach it.
54 - Intake air temperature sensor: remove the left
side fairing and the air filter manifold to reach it.
59 - Stepper motor: remove the inspection door in
the helmet compartment to reach them.
ELE SYS - 42
XEVO 400ie
XEVO 400ie
Electrical system
62 - Lambda probe: The lambda probe is fitted on
the exhaust manifold.
Conceptual diagrams
Ignition
KEY
2. Engine stop switch
3. Diode
4. Side stand button
5. Key switch
7. Engine stop remote control switch
9. Main fuses
11. Auxiliary fuses
ELE SYS - 43
Electrical system
15. 12V-12Ah Battery
43. Injection load remote control
50. HV coil
51. Immobilizer aerial
52.Decoder
53. Injection ECU
Battery recharge and starting
KEY
1. Magneto flywheel
2. Engine stop switch
3. Diode
4. Side stand button
5. Key switch
7. Engine stop remote control switch
8. Voltage regulator
9. Main fuses
11. Auxiliary fuses
12. Stop button on front brake
13. Stop button on rear brake
ELE SYS - 44
XEVO 400ie
XEVO 400ie
Electrical system
14.Immobilizer remote control switch
15. 12V-12Ah Battery
16. Starter motor
17. Start-up remote control switch
20. Starter button
32. Rear light
A. Stop light bulbs
Level indicators and enable signals section
KEY
2. Engine stop switch
3. Diode
4. Side stand button
5. Key switch
7. Engine stop remote control switch
9. Main fuses
11. Auxiliary fuses
15. 12V-12Ah Battery
43. Injection load remote control
44.Ambient temperature sensor
ELE SYS - 45
Electrical system
45. Fuel injector
46. Fuel level transmitter
47. Oil pressure sensor
48. Instrument panel
49.Wheel turning sensor
51. Immobilizer aerial
52.Decoder
53. Injection ECU
54.Intake air temperature sensor
58. Engine rpm sensor
60. Engine temperature sensor
61. Throttle valve potentiometer
62. Lambda probe
Devices and accessories
KEY
2. Engine stop switch
3. Diode
4. Side stand button
5. Key switch
ELE SYS - 46
XEVO 400ie
XEVO 400ie
Electrical system
6. Electric fan
7. Engine stop remote control switch
9. Main fuses
10. 12V-180W Plug socket
11. Auxiliary fuses
15.12V-12Ah Battery
18. Boot actuator
19. Boot opening switch
21. Saddle opening actuator
22.Saddle opening control unit
23. Wiring for anti-theft device
29. Helmet compartment light bulb
37. «MODE» button
38. Helmet compartment light switch
40. Boot light switch
41. Horn
42. Horn button
43. Injection load remote control
48. Instrument panel
53. Injection ECU
55. Fuel pump
56. Diagnosis connector
57. Electric fan remote control
59.Stepper motor
ELE SYS - 47
Electrical system
Lights and turn indicators
KEY
5. Key switch
9. Main fuses
11. Auxiliary fuses
15.12V-12Ah Battery
24. «HAZARD» button
25. Turn indicator switch
26. Light switch
27. Turn signal command device
28. Light switch remote control
30. License plate bulb
31. Rear left turn indicator
32. Rear light
B. Tail light bulbs
33. Rear right turn indicator
34. Front left turn indicator
35. Front light
A. Tail light bulbs
ELE SYS - 48
XEVO 400ie
XEVO 400ie
Electrical system
B. High-beam light bulb
C. Low-beam light bulb
36. Front right turn indicator
39. Headlight remote control
48. Instrument panel
Checks and inspections
Immobiliser
The electronic ignition system is controlled by the control unit and the immobilizer decoder. The immobilizer is an anti-theft system that allows the vehicle to be operated only when it is started with coded
keys recognised by the control unit. The code is integrated in a transponder in the key block. This allows
the driver clear operation without having to do anything other than just turning the key. The Immobiliser
system consists of the following components:
- electronic control unit
- decoder
- immobilizer aerial
- master key with integrated transponder (brown key)
- service key with incorporated transponder (black key)
- HV coil
- diagnosis LED
The diagnosis LED also works as a theft-deterrent blinker. This function is activated every time the
ignition switch is turned to the "OFF" position, or the emergency stop switch is turned to the "OFF"
position. It remains activated for 48 hours in order not to affect the battery charge. When the ignition
switch is turned to the "ON" position, the theft-deterrent blinker function is deactivated. Subsequently,
a flash confirms the switching to the "ON" status. The duration of the flash depends on the programming
of the electronic control unit If the LED is off regardless of the position of the ignition-key switch and/or
the instrument panel is not initiated, check if:
•
there is battery voltage
•
efficiency of fuse No. 7
•
there is power to the control unit as specified below:
Disconnect the connector from the control unit. Check the following conditions:
With the key switch set to OFF:
•
Battery voltage between terminals 17-23 and terminals 17-chassis ground (continuous power supply). If there is no voltage, check that fuse No. 6 is in good conditions.
With the key switch in position ON and the engine stop switch in RUN:
ELE SYS - 49
Electrical system
•
XEVO 400ie
Battery voltage between terminals 26-23 and terminals 26-chassis ground (continuous power supply). If there is no voltage, check:
1. that fuses No. 11 and No. 2 and their wirings are in good conditions.
2. that the engine stop remote control switch is in good conditions.
•
Check for voltage on the white-black cable at the exit from the engine stop remote control
switch. If there is no voltage, check:
1. key switch contacts
2. the condition of the engine stop switch, then the ground connection of the green/black cable of the
engine stop remote control switch with the stand lifted and the engine stop switch in the RUN position.
3. that the engine stop remote control switch diode is in good conditions.
If no fault is found, replace the control unit.
N.B.
AN ACCIDENTAL LOSS OF THE SERVICE KEY PROGRAMMING CAN ARISE FROM GENERAL
FAULTS OF THE IGNITION SYSTEM. IN THIS CASE, CHECK THE HV LINE SHIELDING.
In any case it is advisable to use resistive spark plugs.
Virgin circuit
When the ignition system is not encrypted, any key will start the engine but limited to 2000 rpm. The
keys can only be recognised when the decoder has been correctly programmed. The procedure for
programming a new decoder requires the recognition of the "master" key as the first key to be programmed: this is particularly important as it is the only key that allows the decoder to be reset and
reprogrammed for programming the service keys.
The master and service keys must be used to code the system as follows:
- Insert the Master key, turn it to «ON» and keep this position for two seconds (lower and upper limits
1 to 3 seconds).
- Insert the service key and turn it to «ON» for 2 seconds.
- If you have copies of the key, repeat the operation with each key.
- Insert the MASTER key again and turn it to «ON» for 2 seconds.
The maximum time to change keys is 10 seconds.
A maximum of 7 service keys can be programmed at one time.
It is essential to adhere to the times and the procedure. If you do not, start again from the beginning.
Once the system has been programmed, master key transponder, decoder and control unit are strictly
matched. With this link established, it is now possible to encode new service keys, in the event of losses,
replacements, etc. Each new programming deletes the previous one so, in order to add or eliminate
keys, you must repeat the procedure using all the keys you intend to keep using.
If a service key becomes uncoded, the efficiency of the high voltage circuit shielding must be thoroughly
inspected: In any case it is advisable to use resistive spark plugs.
Characteristic
ELE SYS - 50
XEVO 400ie
Electrical system
MASTER key:
BROWN KEY
SERVICE key.
BLACK KEY
Diagnostic codes
The immobiliser system is tested each time the ignition-key switch is turned from OFF to ON. During
this diagnosis phase a number of control unit statuses can be seen and various light codes displayed. Regardless of the code transmitted, if at
the end of the diagnosis the led remains off permanently, the ignition is enabled. If, however, the
led remains on permanently, it means the ignition
is inhibited:
1. New decoder - key inserted: a single 2 second
flash is displayed, after which the LED remains off
permanently. The keys can be stored to memory,
the vehicle can be started but with a limitation imposed on the number of revs.
2. New decoder - transponder missing or illegible: The LED is permanently ON; in this condition,
no operations are possible, including starting of
the vehicle.
3. Decoder programmed - service key inserted
(normal operating condition): a single 0.7-second flash is displayed, after which the LED remains off steadily. The engine can be started.
4. Decoder programmed - master key inserted: a 0.7-sec flash is displayed followed by the
LED remaining off for 2 sec. and then by short
0.46-sec flashes the same number of times as
there are keys stored in the memory including the
Master key. When the diagnosis has been completed, the LED remains permanently OFF. The
engine can be started.
ELE SYS - 51
Electrical system
XEVO 400ie
5. Decoder programmed - fault detected: a light code is displayed according to the fault detected,
after which the LED remains on steadily. The engine cannot be started. The codes that can be transmitted are:
•
1-flash code
•
2-flash code
•
3-flash code
Diagnostic code - 1 flash
A one-flash code indicates a system where the serial line is not present or is not detected. Check the
Immobilizer aerial wiring and change it if necessary.
Diagnostic code - 2 flashes
A 2-flash code indicates a system where the decoder does not recognise the transponder signal.
This might depend on the inefficiency of the immobiliser aerial or the transponder.
Turn the switch to ON using several keys: if the
code is repeated even with the Master key, check
the aerial wiring and change it if necessary. Otherwise replace the faulty key and/or reprogram the
decoder. If the problem persists, replace the decoder.
ELE SYS - 52
XEVO 400ie
Electrical system
Diagnostic code - 3 flashes
The 3-flash code indicates a system where the decoder does not recognise the key. Turn the switch
to ON using several keys: If the error code is repeated even with the Master key, replace the decoder. If this is not the case, reprogram the
decoder.
Battery recharge circuit
The recharge system is provided with a three phase alternator with permanent flywheel.
The alternator is directly connected to the voltage regulator.
This, in its turn, is connected directly to the ground and the battery positive terminal passing through
the 30A protective fuse.
This system therefore requires no connection to the key switch.
The three- phase generator provides good recharge power and at low revs, a good compromise is
achieved between generated power and idle stability.
Stator check
Checking the stator windings
WARNING
THIS CHECK-UP CAN BE MADE WITH THE STATOR PROPERLY INSTALLED.
1) Remove the right side panel.
2) Disconnect the connectors between stator and regulator with the three yellow cables.
3) Measure the resistance between each of the yellow terminals and the other two.
Electric characteristic
Resistance:
0.2 - 1 Ω
ELE SYS - 53
XEVO 400ie
Electrical system
4) Check that there is insulation between the each
yellow cable and the ground.
5) If values are incorrect, replace the stator.
Recharge system voltage check
Maximum current output check.
- With engine off and panel set to "ON" turn on the lights and let the battery voltage set to 12V.
- Connect ammeter pliers to the 2 recharge positive poles in output from the regulator.
- Keep the lights on and start the engine, bring it to normal speed and read the values on the ammeter.
With an efficient battery a value must be detected: > 20A
Charging current check
WARNING
BEFORE CARRYING OUT THE CHECK, MAKE SURE THAT THE BATTERY IS IN GOOD WORKING ORDER.
1) Place the vehicle on its centre stand
2) With the battery correctly connected to the circuit, place the tester terminals between the battery
terminals..
3) Start the engine, ensure that the lights are all out, increase the engine speed and at the same time
measure the voltage.
Electric characteristic
Voltage ranging between 14.0 and 15.0V at 5000 rpm.
Look for any leakage
1) Check that the battery does not show signs of leaking fluid before checking the output voltage.
2) Turn the ignition key to OFF and connect the multimeter leads between the battery negative pole (-)
and the Black cable.
3) With the multimeter leads connected, disconnect the Black cable from the battery negative pole (-).
4) With the ignition key always at OFF, the reading indicated by the ammeter must be ≤ 0.5 mA.
VOLTAGE REGULATOR/RECTIFIER
Specification
Type
Voltage
ELE SYS - 54
Desc./Quantity
Non-adjustable three-phase transistor
14 ÷ 15V at 5000 rpm with lights off
XEVO 400ie
Electrical system
Turn signals system check
The circuit of the turn indicators is controlled by the electronic control unit. If it does not work, it is
necessary to:
1. Check that the fuse No. 8 is in good condition
2. Check that the bulbs are in good condition
3. Check that the turn signal indicator switch is in good condition
4. With the key switch set to ON; check there is battery voltage on the turn indicator switch connector.
If there is no voltage, check the wiring and the correct function of the electrical control units. Replace
the control unit if the problem persists.
Lights list
BULBS
1
Specification
High-beam light bulb
2
Low-beam light bulb
3
Front tail light bulb
4
Instrument panel bulb
5
Front turn indicator light bulb
6
Helmet compartment light bulb
7
Rear turn indicator light bulb
8
Rear tail light bulb
9
Stop light bulb
10
License plate bulb
Desc./Quantity
Type: HALOGEN (H7)
Power: 12V - 55W
Quantity: 1
Type: HALOGEN (H7)
Power: 12V - 55W
Quantity: 1
Type: ALL GLASS
Power: 12V - 5W
Quantity: 2
Type: ALL GLASS
Power: 12V - 2W
Quantity: 4
Type: ALL GLASS
Power: 12V - 10W
Quantity: 1 RHS + 1 LHS
Type: CYLINDRIC
Power: 12V - 5W
Quantity: 1
Type: ALL GLASS
Power: 12V - 5W
Quantity: 2 RHS + 2 LHS
Type: ALL GLASS
Power: 12V - 5W
Quantity: 2
Type: SPHERICAL
Power: 12V - 10W
Quantity: 2
Type: All glass
Power: 12V - 5W
Quantity: 1
ELE SYS - 55
Electrical system
Fuses
Remote control switches - Diode unit
The electrical system is equipped with 5 remote
control switches plus the diode unit placed under
legshield and the start-up remote control switch
under the right side fairing.
To access the remote control switches under the
shield it is necessary to:
•
Remove the legshield.
•
Remove the knee-guard panel.
In order to access the start-up remote control
switch, remove the right side fairing.
The following table shows the functions of each
remote control switch:
A: Immobiliser
B: Injection load
C. Light switch remote control
D: Electric fan remote control
E: Light remote control
F: Engine stop remote control switch
G: Starter remote control
The electrical system is equipped with 12 protective fuses for the various circuits on the vehicle,
subdivided into two fuse boxes «A» and «B» located alongside the battery.
The chart shows the position and characteristics
of the fuses in the vehicle.
CAUTION
NEVER TRY TO REPLACE A BLOWN FUSE WITH A FUSE
OF A DIFFERENT RATING THAN THAT SPECIFIED OR USING OTHER MATERIAL (FOR EXAMPLE, A PIECE OF
ELECTRICAL WIRE).
BESIDES, IF AFTER REPLACING A FUSE, THE NEW FUSE
ALSO BLOWS, THE SCOOTER NEEDS TO BE TAKEN TO
AN AUTHORISED PIAGGIO/GILERA SERVICE CENTRE TO
IDENTIFY THE CAUSE OF THE FAULT AND AVOID FUR-
ELE SYS - 56
XEVO 400ie
XEVO 400ie
Electrical system
THER DAMAGE TO THE ELECTRIC SYSTEM COMPONENTS OR THE VEHICLE ITSELF.
CAUTION
MODIFICATIONS OR REPAIRS TO THE ELECTRICAL SYSTEM, PERFORMED INCORRECTLY OR WITHOUT STRICT
ATTENTION TO THE TECHNICAL SPECIFICATIONS OF
THE SYSTEM, CAN CAUSE OPERATING ERRORS AND
RISK OF FIRE.
FUSES
1
Specification
Fuse No. 1
2
Fuse No. 2
3
Fuse No. 3
4
Fuse No. 4
5
Fuse No. 5
6
Fuse No. 6
7
Fuse No. 7
8
Fuse No. 8
9
Fuse No. 9
10
Fuse No. 10
Desc./Quantity
Capacity: 30 A
Protected circuits:battery recharge.
Location:battery compartment, on vehicle LHS.
Capacity:15A
Protected circuits:
Turn indicator control device, live fuses No. 8-9-10-12,
live engine stop remote control switch.
Location:Battery compartment - on LHS.
Capacity: 15A
Protected circuits:
- LV socket, electric fan (via relay), wiring for anti-theft
device, saddle opening control unit.
- boot opening live power supply.
Location:battery compartment - on LHS
Capacity: 10 A
Protected circuits: injection load (via relay).
Location:battery compartment, on vehicle LHS.
Capacity: 10A
Protected circuits: luggage light, headlight (via relay).
Location:battery compartment, on vehicle LHS.
Capacity: 3A
Protected circuits: injection ECU, decoder.
Location:battery compartment, on vehicle LHS.
Capacity: 7.5 A
Protected circuits:instrument panel.
Location:battery compartment, on vehicle RHS.
Capacity: 7.5 A
Protected circuits: saddle opening control unit power
supply, hazard button, turn indicator switch, turn indicator control device.
Location:battery compartment, on vehicle RHS.
Capacity: 10 A
Protected circuits: stop lights, headlight remote control.
Location:battery compartment, on vehicle RHS.
Capacity: 7.5 A
ELE SYS - 57
XEVO 400ie
Electrical system
Specification
11
Fuse No. 11
12
Fuse No. 12
Desc./Quantity
Protected circuits: horn, instrument panel lightning, tail
lights, license plate light, light switch.
Location:battery compartment, on vehicle RHS.
Capacity: 7.5 A
Protected circuits: injection load remote control, injection ECU, electrical fan remote control, decoder.
Location:battery compartment, on vehicle RHS.
Capacity:7.5 A
Protected circuits:wheel turning sensor, instrument
panel, wiring for anti-theft device.
Location:battery compartment, on vehicle RHS.
Dashboard
A = Immobilizer / antitheft LED
B= Speedometer with twin scale (km/h and mph)
C = CLOCK switch
D = Digital display
E = Emergency turn indicator warning light
F= SET switch
G = Rpm indicator
H = Fuel gauge
I = Warning light for helmet compartment courtesy
light on
L = Engine control telltale light and injection system failure warning light
M = Low fuel warning light
N = Engine stop warning light
O= Turn indicator warning light
P = Low oil pressure warning light
Q = High-beam warning light
The clock, powered directly by the vehicle's battery, may be set by pressing the «T» button located inside the LHS glove-box on the knee-guard
panel.
Pressing the button for less than one second will
add one minute to the displayed time; Keep the
«T» button pressed to rapidly increase the time.
Sealed battery
Commissioning sealed batteries
If the vehicle is provided with a sealed battery, the only maintenance required is the check of its charge
and recharging, if necessary.
ELE SYS - 58
XEVO 400ie
Electrical system
These operations should be carried out before delivering the vehicle, and on a six-month basis while
the vehicle is stored in open circuit.
Besides, upon pre-delivery it is therefore necessary to check the battery charge and recharge it, if
required, before storing the vehicle and, afterwards, every six months.
INSTRUCTIONS FOR THE BATTERY REFRESH AFTER OPEN-CIRCUIT STORAGE
1) Voltage check
Before installing the battery on the vehicle, check the open circuit voltage with a regular tester.
- If voltage exceeds 12.60 V, the battery can be installed without any renewal recharge.
- If voltage is below 12.60 V, a renewal recharge is required as explained in 2).
2) Constant voltage battery charge mode
- Constant voltage charge equal to 14.40 ÷ 14.70V
-Initial charge voltage equal to 0.3 ÷ 0.5 for Nominal capacity
- Charge time:
10 to 12 h recommended
Minimum 6 h
Maximum 24 h
3) Constant current battery charge mode
-Charge current equal to 1/10 of the nominal capacity of the battery
- Charge time: 5 h
Specific tooling
020333Y Single battery charger
020334Y Multiple battery charger
Cleaning the battery
The battery should always be kept clean, especially on its top side, and the terminals should be coated
with Vaseline.
CAUTION
NEVER USE FUSES WITH A CAPACITY HIGHER THAN THE RECOMMENDED CAPACITY. USING
A FUSE OF UNSUITABLE RATING MAY SERIOUSLY DAMAGE THE VEHICLE OR EVEN CAUSE
A FIRE.
CAUTION
CHARGE THE BATTERY BEFORE USE TO ENSURE OPTIMUM PERFORMANCE. FAILURE TO
CHARGE THE BATTERY ADEQUATELY BEFORE BEING PUT INTO OPERATION WILL LEAD TO
A PREMATURE FAILURE OF THE BATTERY.
If the scooter is not used for a given time (1 month or more) it will be necessary to periodically recharge
the battery.
The battery runs down completely in the course of three months. If it is necessary to refit the battery in
the vehicle, be careful not to reverse the connections, remembering that the ground wire (black) marked
(-) must be connected to the negative clamp while the other two red wires marked (+) must be connected to the clamp marked with the + positive sign.
ELE SYS - 59
Electrical system
XEVO 400ie
Dry-charge battery
- Remove the short closed tube and the caps, then
pour sulphuric acid into the cells using the type
specified for batteries with a specific gravity of
1.26, corresponding to 30 Bé at a minimum temperature of 15°C until the upper level is reached.
- Allow to stand for at least 2 hours, then top up the
level with sulphuric acid.
- Within 24 hours, recharge using the special battery charger (single) or (multiple) at an intensity of
about 1/10 of the battery nominal capacity and until
the acid gravity is about 1.27, corresponding to 31
Bé and such values become steady.
- After charging, top up the acid (adding distilled
water). Close and clean carefully.
- After carrying out the operations above, install the
battery on the scooter, observing the connections
described in point 3) of paragraph "Battery recharge".
Specific tooling
020333Y Single battery charger
020334Y Multiple battery charger
1 Keep the pipe in vertical position
2 Inspect visually
3 The float must be freed
Checking the electrolyte level
The electrolyte level must be checked frequently and must reach the upper level. Only use distilled
water, to restore this level. If it is necessary to add water too frequently, check the vehicle's electrical
system: the battery works overcharged and is subject to quick wear.
Charging status check
After topping-up the electrolyte level, check its density using special density gauge.
When the battery is charged, you should detect a density of 30 to 32 Bé corresponding to a specific
weight of 1.26 to 1.28 at a temperature of no lower than 15° C.
A density reading of less than 20° Bé indicates that the battery is completely flat and it must therefore
be recharged.
If the scooter is not used for a given time (1 month or more) it will be necessary to periodically recharge
the battery.
ELE SYS - 60
XEVO 400ie
Electrical system
The battery runs down completely in the course of three months. When refitting the battery onto the
scooter pay attention not to invert the cables, bearing in mind that the earth (black) wire marked with
a (-) must be connected to the negative terminal whilst the other two red wires, marked with a (+) must
be attached to the positive, + terminal.
Battery recharge
WARNING
BEFORE RECHARGING THE BATTERY, REMOVE THE PLUGS OF EACH CELL. KEEP SPARKS
AND NAKED FLAMES AWAY FROM THE BATTERY WHILE RECHARGING.
Remove the battery from the vehicle removing the negative clamp first.
Normal bench charging must be performed using the special battery charger (single) or (multiple), setting the battery charge selector to the type of battery that requires recharging (i.e., at a current equal
to 1/10 of the battery rated capacity). Connections to the power supply source must be implemented
by connecting corresponding poles (+ to + and - to - ).
Specific tooling
020333Y Single battery charger
020334Y Multiple battery charger
The battery should always be kept clean, especially on its top side, and the terminals should be coated
with Vaseline.
CAUTION
NEVER USE FUSES WITH A CAPACITY HIGHER THAN THE RECOMMENDED CAPACITY. USING
A FUSE OF UNSUITABLE RATING MAY SERIOUSLY DAMAGE THE VEHICLE OR EVEN CAUSE
A FIRE.
CAUTION
ORDINARY AND DRINKING WATER CONTAINS MINERAL SALTS THAT ARE HARMFUL FOR
THE BATTERY. FOR THIS REASON, YOU MUST ONLY USE DISTILLED WATER.
CAUTION
CHARGE THE BATTERY BEFORE USE TO ENSURE OPTIMUM PERFORMANCE. FAILURE TO
CHARGE THE BATTERY ADEQUATELY BEFORE BEING PUT INTO OPERATION WILL LEAD TO
A PREMATURE FAILURE OF THE BATTERY.
Battery installation
To access the battery, proceed as follows:
1. Place the scooter on its centre stand;
2. Open the saddle.
3. Remove the two screws A and the cover B.
4. Remove the electrical connections, disconnect
the breather pipe C and take out the battery.
To refit, follow the steps but in reverse order.
CAUTION
ELE SYS - 61
XEVO 400ie
Electrical system
IN ORDER TO AVOID DAMAGING THE ELECTRICAL SYSTEM, NEVER DISCONNECT THE WIRING WHILE THE ENGINE IS RUNNING. DO NOT TIP THE SCOOTER TOO MUCH
IN ORDER TO AVOID DANGEROUS LEAKS OF BATTERY
ELECTROLYTE.
Connectors
ECU
Layout of the system-side connectors and the connectors on the electronic control unit.
ECU
1
2
3
4
5
6
7
8
9
10
11
12
ELE SYS - 62
Specification
Throttle potentiometer power supply
Lambda sensor
Rpm indicator
Engine temperature
Electric fan remote control
Stepper motor
Engine rpm sensor
Lambda sensor
EMS diagnostic connector
EMS diagnostic connector
Throttle potentiometer signal
Engine rpm sensor
Desc./Quantity
+5 V
(-)
(+)
Stepper motor
(+)
XEVO 400ie
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Electrical system
Specification
Injector control
Stepper motor
Injection telltale light
Decoder (serial)
Battery powered
Intake air temperature sensor
Injection load remote control
HV coil
Stepper motor
Sensor ground
Ground lead
Stepper motor
Continuous power supply
Desc./Quantity
(-)
Stepper motor
(-)
(+)
(+)
(-)
(-)
Stepper motor
(-)
Stepper motor
(+)
Seat opening receiver
SADDLE OPENING RECEIVER CONTROL UNIT
1
2
3
4
5
6
7
8
9
10
11
12
Specification
Radio aerial
Actuator 2
Reset / Input clearing
Battery positive
(Not connected)
Live positive lead
Ground lead
(Not connected)
(Not connected)
Actuator 1
Channel selection 1/3
Alarm code output
Desc./Quantity
Immobiliser decoder
ELE SYS - 63
XEVO 400ie
Electrical system
IMMOBILIZER DECODER
1
2
3
4
5
6
7
8
Specification
Immobilizer LED control
Base power supply
Ground lead
electronic control unit
Continuous power supply (positive)
Desc./Quantity
(negative)
(positive)
(serial)
Dashboard
CONNECTOR A
1
2
3
4
5
6
7
8
9
10
11
12
Specification
Live supply
Battery-powered
Ground lead
General live power supply
Desc./Quantity
Instrument panel lighting
CONNECTOR B
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
ELE SYS - 64
Specification
Speed sensor
Fuel level indicator
Water temperature sensor
Water temperature sensor
«MODE» button
Oil pressure sensor
Left direction warning light
Right direction warning light
High-beam lamp warning light
Open boot warning light
Rpm indicator signal
Ambient temperature sensor
Ambient temperature sensor
Engine disabled warning light
Immobilizer LED
Injection check warning light
Ground lead
Hazard warning light
Desc./Quantity
(+)
(-)
(+)
(-)
XEVO 400ie
19
20
Electrical system
Specification
Ground lead
-
Desc./Quantity
Remote seat opening
The vehicle is equipped with a remote control to open the saddle.
This remote control is supplied together with the keys and at the manufacturing stage, it has been
programmed to work together with the ECU that control the opening device.
If the remote control is lost, a new one can be requested and reprogram it by resetting the ECU memory
and following the same steps as per programming the immobilizer system in the keys.
Battery replacement
The remote control for the black key is powered by
inner batteries that get discharged after extended
used.
You may need to replace the batteries if the remote control fails or if its range of operation is
reduced.
To replace the batteries remove the three screws
and uncouple the two half-shells.
Electric characteristic
Batteries used:
CR1616
ELE SYS - 65
Electrical system
XEVO 400ie
Zeroing
- To access the saddle opening control/reception
unit, remove the left side fairing.
- A white cable, that comes from pin 3 of the control
unit, goes out from the wiring.
- Earth the cable at least 10 seconds in order to
delete all the remote controls stored in the control
unit.
Programming
- Follow these steps to program the remote controls:
1. Insert the remote control key to be programmed in the steering lock key block.
2. Turn the key to ON, press the button on the remote control, release the button, turn the key back to
OFF from the ON position, all within four seconds.
3. Wait 1 to 8 seconds
4. Repeat steps 2 and 3 for 4 times without removing the key. The control unit confirms the programming
has been successful by opening the saddle.
N.B.
THE CONTROL UNIT CAN PROGRAMME UP TO 7 REMOTE CONTROLS.
ELE SYS - 66
INDEX OF TOPICS
ENGINE FROM VEHICLE
ENG VE
Engine from vehicle
Exhaust assy. Removal
- Remove the right-hand side fairing
- Undo the two exhaust manifold fixings on the
head.
- Remove the Lambda probe from its support and
disconnect it.
Remove the screw indicated in the photograph.
- Loosen the screw shown in the figure so as to
loosen the muffler strap and remove the whole
muffler.
ENG VE - 68
XEVO 400ie
XEVO 400ie
Engine from vehicle
N.B.
DUE TO MUFFLER DIMENSIONS IT IS NOT POSSIBLE TO
ACTUATE ON THE SCREW PERPENDICULARLY TO REMOVE IT; USE A COMMERCIALLY AVAILABLE «BONDUS» MALE HEXAGONAL WRENCH.
Remove the lambda probe from the manifold.
Removal of the engine from the vehicle
CAUTION
THIS OPERATION MUST BE CARRIED OUT WHEN THE ENGINE IS COLD.
- Disconnect the battery.
- Remove the side fairings.
- Remove the helmet compartment.
Remove the full muffler unit.
- Remove the rear wheel.
- Remove the pipe feeding coolant into the pump
"A" as shown in the photograph and then empty
the system.
- Remove the engine coolant outlet pipe as indicated.
- Disconnect the delivery and reverse fuel pipes
"B".
- Remove the coolant outlet pipe from the motor
as indicated.
- Remove the spark plug cap.
ENG VE - 69
Engine from vehicle
XEVO 400ie
- Remove the electrical connections to the sensors
and devices.
- Remove the throttle control cable from the throttle
body by undoing the nut "C".
- Remove the positive and negative wiring from the
starter motor.
- Disconnect the connectors from the flywheel wiring harness.
- Remove the lower screw of the left shock absorber "D".
- Use a jack to support the vehicle properly.
- Remove the engine-swinging arm fixing pin by
undoing the nut "E" and operating on the head of
the pin "F" indicated in the photograph.
- Remove the rear brake calliper and the relevant
pipes from the engine crankcase.
- The engine is now free.
Installing the engine on the scooter
- Carry out the removal operations but in reverse order and respect the locking torques indicated in the
«Specifications» Chapter.
CAUTION
PAY PARTICULAR ATTENTION TO POSITIONING THE THROTTLE CONTROL TRANSMISSION
PROPERLY.
ENG VE - 70
XEVO 400ie
Engine from vehicle
Check that there is a small clearance when the valve is in abutment against the set screw.
-Check the engine oil level and if necessary top it up with the recommended type.
- Top-up the cooling circuit.
- Check the functioning of the accelerator and the electrical devices.
ENG VE - 71
INDEX OF TOPICS
ENGINE
ENG
XEVO 400ie
Engine
This section describes the operations to be carried
out on the engine and the tools to be used.
Automatic transmission
Transmission cover
- Using a screwdriver, remove the driven pulley
axle cover near the bottom of the cap.
- Loosen the driven pulley shaft fastening nut using
a misaligned wrench and prevent the pulley shaft
rotation using a machine hexagon bush.
- Remove the nut and the two washers.
N.B.
DUE TO THE HIGH TIGHTENING TORQUE, USING DIFFERENT WRENCHES - SUCH AS A CONVENTIONAL POLYGONAL BUSH - MAY DAMAGE THE HEXAGON OBTAINED
ON THE SHAFT OR BREAK THE BUSH ITSELF.
- Loosen the 4 fastening screws
- Extract the outside plastic transmission cover.
ENG - 73
Engine
- Remove the six M6 screws.
- Remove the four M8 screws.
- Remove the transmission cover.
- Check that the bearing rotates freely, otherwise
replace it.
Air duct
- Remove the transmission cover.
- Unscrew the two screws shown in the figure to
remove the air conveyor.
Locking torques (N*m)
Air conveyor screws 11 ÷ 12
- Remove the external transmission cover.
- Unscrew the 4 fastening screws shown in the figure to remove the external air conveyor.
ENG - 74
XEVO 400ie
XEVO 400ie
Engine
Air duct filter
- Remove the external air conveyor.
- Unscrew the 2 fastening screws shown in the figure to remove the conveyor filter.
Removing the driven pulley shaft bearing
- Remove the transmission cover.
- Remove the Seeger ring.
- Place transmission cover on a wood surface and
use the special tool so that it is adequately supported.
- Pull out the bearing using the special tool.
N.B.
BELL MUST BE PLACED INTO THE TRANSMISSION COVER, CLOSE TO THE BEARING SEAT AND THE WOODEN
SURFACE, SINCE WITHOUT BELL THE ENTIRE COVER
STRUCTURE WOULD BEND. NOT ONLY IN THE AREA OF
MAXIMUM STURDINESS.
Specific tooling
001467Y002 Driver for OD 73 mm bearing
020376Y Adaptor handle
020375Y 28 x 30 mm adaptor
020439Y 17-mm guide
ENG - 75
Engine
XEVO 400ie
Refitting the driven pulley shaft bearing
- Heat the transmission cover interior using the
heat gun.
N.B.
BE CAREFUL NOT TO OVERHEAT THE COVER AS THIS
WOULD DAMAGE THE OUTSIDE PAINTED SURFACE.
Specific tooling
020151Y Air heater
- Place the bearing onto the special tool with a little
grease to prevent it from coming out.
- Install the new bearing using the special tool.
N.B.
PROPERLY SUPPORT THE OUTSIDE COVER TO PREVENT DAMAGING THE PAINTED SURFACE.
Specific tooling
020376Y Adaptor handle
020358Y 37x40-mm Adaptor
020439Y 17-mm guide
Baffle roller
Plastic roller
- Check that the roller does not show signs of wear
and that it turns freely.
- Loosen the retaining bolt using a 13 mm spanner.
- Remove the complete roller with bearing.
N.B.
IF THE ROLLER DOES NOT ROTATE FREELY, REPLACE
THE COMPLETE ROLLER.
Installation of belt anti-vibration roller
- Install the anti-flapping roller with the lip facing the engine crankcase.
- Tighten the central screw to the prescribed torque.
N.B.
TURN THE DRIVEN AND/OR DRIVING PULLEY UNTIL A CORRECT TENSIONING OF THE BELT
IS OBTAINED.
Locking torques (N*m)
ENG - 76
XEVO 400ie
Engine
Anti-vibration roller screw 16.7 ÷ 19.6
Removing the driven pulley
- Remove the clutch bell.
- Remove the fixed driving half-pulley.
- Remove the driven pulley assembly with the belt.
Inspecting the clutch drum
- Check that the clutch bell is not worn or damaged.
- Measure the clutch bell inside diameter.
N.B.
CHECK THE ECCENTRICITY MEASURED, 0.2 MM MAX.
Characteristic
Max. value:
160.5 mm
Standard value:
160.2 mm
ENG - 77
Engine
XEVO 400ie
Removing the clutch
- To remove the clutch with the driven pulley it is
necessary to use the special tool;
- Arrange the tool with the mean pins screwed in
position "E" on the inside;
- Fit the adapter ring to the clutch assembly as
shown in the photograph.
- Install the driven pulley unit onto the tool inserting
the pins into the ventilation holes;
- Move the rear stop screw in abutment against the
fixed driven pulley as shown in the figure.
CAUTION
THE TOOL SHOULD BE FIRMLY SECURED IN A VICE USING THE SPECIAL TOOL. DO NOT
TIGHTEN THE REAR SCREW TOO MUCH AS THIS COULD IRRETRIEVABLY DEFORM THE
TOOL.
USING THE SPECIAL 55-MM WRENCH, REMOVE THE FASTENING RING NUT.
LOOSEN THE TOOL SCREW AND DISASSEMBLE THE DRIVEN PULLEY UNIT, CLUTCH, SPRING
WITH SHEATH.
Specific tooling
020444Y Tool for fitting/ removing the driven pulley clutch
Inspecting the clutch
- Check the thickness of the clutch mass friction material.
Characteristic
Minimum thickness permitted:
1 mm
- The masses must not show traces of lubricants. Otherwise, check the driven pulley unit seals.
N.B.
UPON RUNNING-IN, THE MASSES MUST EXHIBIT A CENTRAL CONTACT SURFACE AND MUST
NOT BE DIFFERENT FROM ONE ANOTHER. VARIOUS CONDITIONS CAN CAUSE THE CLUTCH
TO TEAR.
ENG - 78
XEVO 400ie
Engine
- Do not open the masses using tools to prevent a
variation in the return spring load.
Pin retaining collar
- Extract the collar using 2 screwdrivers.
- Remove the 4 guide pins.
- Extract the moving driven half-pulley.
Removing the driven half-pulley bearing
- Check that the bushing is free from wear and
damage; otherwise replace the fixed driven halfpulley.
- Remove the lock ring using pliers.
ENG - 79
Engine
XEVO 400ie
- Using the special tool inserted through the roller
bearing, pull out the ball bearing.
N.B.
PROPERLY SUPPORT THE PULLEY TO PREVENT DAMAGING THE THREADING.
Specific tooling
020376Y Adaptor handle
020456Y Ø 24 mm adaptor
020363Y 20-mm guide
N.B.
IF YOU NEED TO OVERHAUL THE BEARINGS ON AN ASSEMBLED DRIVEN PULLEY UNIT, IT IS
NECESSARY TO SUPPORT THE UNIT BY THE BELL
Specific tooling
001467Y002 Driver for OD 73 mm bearing
- Remove the roller bearing using the special tool,
supporting the fixed half-pulley with the bell.
Specific tooling
020376Y Adaptor handle
020375Y 28 x 30 mm adaptor
020364Y 25-mm guide
001467Y002 Driver for OD 73 mm bearing
Inspecting the driven fixed half-pulley
- Check that the belt contact surface is free from
wear.
- Measure the outer diameter of the pulley bushing.
Characteristic
Minimum admissible diameter
49.91 mm
Standard diameter:
50.00 -0.015 -0.035 mm
ENG - 80
XEVO 400ie
Engine
Inspecting the driven sliding half-pulley
- Check that the belt contact surface is free from
wear.
- Remove the 2 inside sealing rings and the 2 outside O-rings.
- Measure the movable half-pulley bushing inside
diameter.
Characteristic
Maximum admissible diameter:
50.05 mm
Standard diameter:
50.00 +0.035 0.00 mm
Refitting the driven half-pulley bearing
- Install a new roller bearing using the special tool.
N.B.
PLACE THE BEARING WITH THE WRITINGS AND THE EMBEDDED OIL GUARD FACING OUTWARDS.
- Properly support the half-pulley to prevent damaging the threading.
If you are working on the driven pulley unit fully assembled, use the special tool.
Specific tooling
020478Y Punch for driven pulley roller casing
001467Y002 Driver for OD 73 mm bearing
- Install a new ball bearing using the special tool.
Specific tooling
020376Y Adaptor handle
020477Y 37 mm adaptor
020363Y 20-mm guide
- Insert the Seeger lock ring.
ENG - 81
Engine
XEVO 400ie
Refitting the driven pulley
- Insert the new oil guards
- Insert the new O-rings
N.B.
O-RINGS ARE OF TWO SIZES. THE LARGE ONE IS INSTALLED ON THE MACHINING END RADIUS, AT THE BASE OF THE HALF-PULLEY.
- Install the half-pulley on the bushing being careful
not to damage the top sealing ring during the introduction.
- Make sure the pins and collar are not worn, reassemble the pins and collar.
- Using a bent beak greaser, lubricate the driven pulley unit with about 10 gr. of grease, this operation
should be carried out through one of the two holes into the bushing to obtain the exit of the grease from
the opposite hole. This operation is necessary to avoid the presence of grease beyond the O-rings.
Inspecting the clutch spring
- Measure the length of the movable driven halfpulley spring while it is unloaded.
Characteristic
Standard length:
125.5 mm
Admissible limit after use:
120 mm
ENG - 82
XEVO 400ie
Engine
Refitting the clutch
- Prepare the special tool as for removal;
- Preassemble the driven pulley unit with the drive
belt according to its direction of rotation;
- Insert the driven pulley unit, the spring with
sheath and clutch into the tool.
Specific tooling
020444Y Tool for fitting/ removing the driven
pulley clutch
- Compress the spring and insert the clutch on the driven pulley bushing.
N.B.
BE CAREFUL NOT TO DAMAGE THE SHEATH OR THE BUSHING THREADED END.
- Tighten the ring nut by hand and complete the
tightening using the special wrench to the prescribed torque.
Specific tooling
020444Y Tool for fitting/ removing the driven
pulley clutch
Locking torques (N*m)
Clutch ring nut 65 - 75
- To facilitate reassembly on the engine, turn the moving driven pulley and insert the belt onto the smaller
diameter.
Refitting the driven pulley
- Install the driven pulley assembly with belt.
ENG - 83
Engine
Drive-belt
- Check that the driving belt is not damaged.
- Check the width of the belt.
Characteristic
Minimum width:
27 mm
Standard width:
28.2 mm
Removing the driving pulley
- Using a 27 mm wrench, turn the central pulley nut
to horizontally align the central inside holes and
install the special tool.
Specific tooling
020474Y Driving pulley lock wrench
- First fit the 2 retainer clamps of the special tool
onto the pulley so that the splines are completely
engaged.
- Then, insert the tool so as to insert the stud bolts
on the ring into the holes obtained onto the tool
itself.
- Tighten the two tool fixing screws, also manually.
- Loosen the central nut.
- Remove the spring washer and the flat washer.
- Remove the fixed driving half-pulley.
- Remove the bushing connection washer.
ENG - 84
XEVO 400ie
XEVO 400ie
Engine
- Move the belt downwards.
- Suitable support the roller contrast and extract
the movable driving half-pulley with the relevant
bushing and the rear washer, being careful not to
make the rollers come out.
Inspecting the rollers case
- Check that the inside bushings shown in the figure exhibit no signs of abnormal wear and measure
the inside diameter.
CAUTION
DO NOT LUBRICATE OR CLEAN THE BUSHINGS
Characteristic
Maximum admissible diameter:
30.12 mm
Standard diameter:
30.021 mm
- Measure the pulley sliding bushing outside diameter shown in the figure.
Characteristic
Minimum admissible diameter
Ø 29.95 mm
Standard diameter:
Ø 29.959 mm
- Check that the rollers are not damaged or worn.
Characteristic
Minimum admissible diameter
Ø 24.5 mm
Standard diameter:
Ø 24.9 mm
ENG - 85
Engine
- Check the guide shoes for the variator back-plate
are not worn.
- Check the wear of the roller housings and of the
belt contact surfaces on both pulley halves.
Refitting the driving pulley
Installing the roller container
- Install the spacer with the internal chamfer facing
towards the inside.
- Position the rollers on the half-pulley as shown in
the figure.
- The closed side must rest on the inside thrust
face of the roller container.
- Assembly the half-pulley with the roller contrast
plate and sliding blocks.
ENG - 86
XEVO 400ie
XEVO 400ie
Engine
- Insert the half-pulley on the crankshaft.
- Insert the spacer bushing.
Installing the fixed driving half-pulley
- Insert the spacer.
- Install the fixed driving half-pulley and check that
it is in contact with the spacer and with the guide
bushing of the movable driving pulley.
- Remove the flat washer and the spring washer
as shown in the figure.
ENG - 87
Engine
- Insert the nut in the original position (nut side in
contact with the belleville washer).
- Turn the central pulley nut to horizontally align
the holes and install the special tool.
N.B.
CHECK THAT THE STOP WRENCH TOOL IS EASILY INSERTED INTO THE PULLEY AND IN THE ENGINE CRANKCASE.
Specific tooling
020474Y Driving pulley lock wrench
- Install the lock ring from the rear so that the
splines are completely engaged.
- Finally install the tool by siding the nuts by hand
and ensuring the tool is resting flatly.
- Tighten the driving pulley fastening nut to the
prescribed torque
- Remove the special tool.
Locking torques (N*m)
Drive pulley nut 160 - 175
Refitting the transmission cover
- Ensure the correct installation on the crankcase
of the 2 centring dowels.
ENG - 88
XEVO 400ie
XEVO 400ie
Engine
- Insert the transmission cover with the bearing
and install the relevant retainers.
- Lock the four M8 retainers.
Locking torques (N*m)
M8 retainers for transmission cover 23 ÷ 26
- Lock the 7 M6 retainers.
Locking torques (N*m)
M6 retainer 11 ÷ 13
- Insert the washers on the driven pulley shaft.
N.B.
INSERT THE SMALLER WASHER FIRST, THEN THE LARGER ONE.
- Insert the flanged nut.
- Prepare the torque wrench for LHS locking using
a machine hexagon wrench.
- Tighten the driven pulley shaft fastening nut using
an offset wrench.
N.B.
DUE TO THE HIGH TIGHTENING TORQUE, USING DIFFERENT WRENCHES - SUCH AS A CONVENTIONAL POLYGONAL BUSH - MAY DAMAGE THE HEXAGON OBTAINED
ON THE SHAFT OR BREAK THE BUSH ITSELF.
Locking torques (N*m)
Driven pulley nut 92 - 100
- Install the driving pulley shaft cover, positioning
the tooth gap on the lower part with the reference
mark on the transmission crankcase.
N.B.
ENSURE THAT THE AIR INTAKE AND EXHAUST OPENINGS ARE COMPLETELY FREE.
ENG - 89
Engine
- Install the outside plastic transmission cover.
- Tighten the 4 fastening screws to the prescribed
torque.
Locking torques (N*m)
External transmission cover screws 7 ÷ 9
End gear
Removing the hub cover
- Drain the rear hub oil through the oil drainage cap
located under the engine.
-Remove the 7 fastening screws. Remove the hub
cover and the relevant gasket.
Removing the wheel axle
- Remove the countershaft.
- Remove the wheel axis complete with gear.
ENG - 90
XEVO 400ie
XEVO 400ie
Engine
Removing the hub bearings
- Check all bearings (wear, clearance and noise).
In case of anomalies, proceed as follows.
To remove the gear shaft bearing on the engine
crankcase, use the following parts.
Specific tooling
001467Y014 Pliers to extract ø 15-mm bearings
001467Y034 Pliers to extract ø 15-mm bearings
001467Y031 Bell
- Use the special extractor to disassemble the
bearing on the engine chassis of the countershaft.
Specific tooling
001467Y006 Pliers to extract 20 mm bearings
001467Y035 Bearing housing, outside ø 47 mm
- Support the hub cover using the stud bolt set.
- Pull out the bearing using the special tool.
Specific tooling
020476Y Stud bolt set
001467Y006 Pliers to extract 20 mm bearings
001467Y007 Driver for OD 54-mm bearings
Removing the wheel axle bearings
- Take out the clip on the outside of the gearbox
cover.
ENG - 91
Engine
- Support the hub cover using the stud bolt set.
- Pull out the bearing using the special tool.
Specific tooling
020476Y Stud bolt set
020376Y Adaptor handle
020477Y 37 mm adaptor
020483Y 30-mm guide
- Remove the oil guard using a screwdriver.
Removing the driven pulley shaft bearing
- If you have to remove the driven pulley shaft, the
relevant bearing and the oil guard, remove the
transmission cover and the clutch unit as described in the « Automatic transmission» chapter.
- Extract the driven pulley shaft from its bearing.
- Remove the oil guard using a screwdriver into the
hub gear box.
- Remove the Seeger ring shown in the figure.
- Pull out the driven pulley shaft bearing from the
engine crankcase using the special tool.
Specific tooling
020376Y Adaptor handle
020358Y 37x40-mm Adaptor
020364Y 25-mm guide
ENG - 92
XEVO 400ie
XEVO 400ie
Engine
Inspecting the hub shaft
- Check that the 3 shafts exhibit no wear or deformation on the grooved surfaces, at the bearings
and at the oil guards.
- In case of faults, replace the damaged parts.
Characteristic
Connection diameter for countershaft:
A = diameter 20 - 0.01 -0.02 mm
Connection diameter for wheel shaft:
B = diameter 30 - 0.010 -0.023 mm
C = diameter 15 - 0.01 -0.02 mm
Bearing diameter for driven pulley shaft:
D = diameter 17 - 0.01 -0.02 mm
E = diameter 20 - 0.01 -0.02 mm
F = diameter 25 - 0.01 -0.02 mm
Inspecting the hub cover
- Check that the mounting surface is not damaged or deformed.
ENG - 93
Engine
- Check the capacity of the bearings.
In case of faults, replace the hub cover.
Refitting the driven pulley shaft bearing
- Heat the crankcase using the heat gun.
Specific tooling
020151Y Air heater
- Insert the driven pulley shaft bearing until it abuts
against the bottom of the seat using the special
tool.
N.B.
PLACE IT WITH THE BALLS FACING THE HUB (THIS APPLIES TO BEARINGS WITH PLASTIC CAGE).
Specific tooling
020376Y Adaptor handle
020360Y 52x55-mm Adaptor
020364Y 25-mm guide
- Heat the intermediate gear bearing seat.
- Insert the intermediate shaft bearing using the
special tool.
N.B.
PLACE IT WITH THE BALLS FACING THE HUB (THIS APPLIES TO BEARINGS WITH PLASTIC CAGE).
Specific tooling
020376Y Adaptor handle
020359Y 42x47-mm Adaptor
020363Y 20-mm guide
ENG - 94
XEVO 400ie
XEVO 400ie
Engine
- Heat the gear shaft bearing seat on the crankcase.
- Insert the gear shaft bearing in the upper crankcase seat using the special tool.
N.B.
PLACE IT WITH THE BALLS FACING THE HUB (THIS APPLIES TO BEARINGS WITH PLASTIC CAGE).
Specific tooling
020376Y Adaptor handle
020359Y 42x47-mm Adaptor
020412Y 15-mm guide
- Place the safety lock Seeger ring of the driven
pulley shaft bearing.
N.B.
PLACE IT IN THE POSITION SHOWN IN THE FIGURE.
- Insert the pulley shaft oil guard on the transmission side.
Refitting the hub cover bearings
- Heat the bearing seats on the cover using the
heat gun.
- Support the hub cover using the stud bolt set.
Specific tooling
020151Y Air heater
020476Y Stud bolt set
ENG - 95
Engine
- Insert the intermediate shaft bearing on the cover
using the special tool.
N.B.
PLACE IT WITH THE BALLS FACING THE HUB (THIS APPLIES TO BEARINGS WITH PLASTIC CAGE).
Specific tooling
020376Y Adaptor handle
020360Y 52x55-mm Adaptor
020363Y 20-mm guide
- Heat the gear shaft bearing seat from the cover
outside.
- Insert the gear shaft bearing on the cover using
the special punch until abutment.
Specific tooling
020376Y Adaptor handle
020360Y 52x55-mm Adaptor
020483Y 30-mm guide
- Replace the snap ring
- Support the hub cover using the stud bolt set.
- Insert the wheel shaft oil guard with the sealing
lip facing the inside of the cover.
- Place the oil guard flush with the crankcase.
Specific tooling
020376Y Adaptor handle
020360Y 52x55-mm Adaptor
020476Y Stud bolt set
ENG - 96
XEVO 400ie
XEVO 400ie
Engine
Refitting the hub bearings
- Place the 3 shafts as shown in the figure.
Refitting the ub cover
- Check the proper position of the centring dowels.
- Install a new gasket.
- Fit the gearbox cover, making sure the breather
pipe is in the correct position.
- Position the 7 set screws, tighten them to the prescribed torque, being careful of the position of the
bands holding the vent tube, and the position of the 3 shortest screws as indicated in the figure.
- Refill with the prescribed oil to the Max. level.
Recommended products
AGIP ROTRA 80W-90 rear hub oil
SAE 80W/90 Oil that exceeds the requirements of API GL3 specifications
Characteristic
Quantity:
approx. 250 cc
Locking torques (N*m)
Rear hub cover screws 24 ÷ 27
ENG - 97
Engine
Flywheel cover
- Remove the three bands shown in the figure for
an easier removal of the flywheel cover, remove
the feed hoses and disconnect the return hose
from the pump cover.
N.B.
THE BANDS MUST BE REPLACED. TO REMOVE THEM,
OPEN WITH A SCREWDRIVER OR CUT THEM.
BE CAREFUL NOT TO DAMAGE THE PLASTIC UNIONS.
Removing the hub cover
- Drain the engine oil by removing the drainage
cap.
- Prepare a suitable container to collect the oil.
- Remove the pre-filter.
- Remove the oil filter using a filter tape or shaped
cup wrench.
ENG - 98
XEVO 400ie
XEVO 400ie
Engine
- Loosen the 14 fastening screws.
- Remove the flywheel cover with the relevant gasket and the cooling system sleeve support.
N.B.
THE SCREWS ARE OF 4 DIFFERENT LENGTHS. NOTE
THE RELEVANT POSITIONS.
CAUTION
REMOVE THE COVER AVOIDING ANY POSSIBLE INTERFERENCE BETWEEN STATOR AND
ROTOR.
CAUTION
BE CAREFUL TO PREVENT SLIPPAGE OF THE BY-PASS VALVE AND OF THE RELEVANT
SPRING.
Removing the flywheel cover components
- Loosen the six mounting screws and remove the
water pump cover.
- Remove the by-pass and the relevant spring.
- Remove the oil pump seal.
ENG - 99
Engine
Removing the stator
- Remove the two retaining screws and the cable
guide bracket.
- Unscrew the 3 fastening screws and remove stator and its wiring.
Inspecting the cover components
- Loosen the two retaining screws and remove the
reed valve support with bulkhead.
- Remove the blow-by reed valve with the relevant
sealing gasket.
ENG - 100
XEVO 400ie
XEVO 400ie
Engine
- Unscrew the fastening screw and remove the gas
outlet union with the relevant O-ring.
- Check that the mounting surface of the crankcase
is not worn or deformed.
- Check that the by-pass valve seat and the torque
limiter bearing are free from wear.
Characteristic
By-pass housing hole diameter:
13.9 mm
Connection diameter for start-up gear shaft:
12 mm
Connection diameter for pump shaft:
8 mm
- Check that the oil filter union and matching surface exhibit no deformations or wear.
- Check the condition of the stator and the relevant
cable harness.
ENG - 101
Engine
- Check the continuity between the 3 phases.
N.B.
VALUES ARE STATED AT AMBIENT TEMPERATURE. A
CHECK WITH THE STATOR AT OPERATING TEMPERATURE MAY RESULT IN VALUES HIGHER THAN THOSE
STATED.
Electric characteristic
Resistance:
0.2 - 1 Ω
- Check the ground insulation of each phase.
- If a fault is found, carry out a thorough check of
the cable harness that contains two types of cable:
Rigid cables close to the stator and flexible cables
close to the connector.
- Check that the winding is positioned so as not to
interfere with the heads of the retaining screws.
Refitting the stator
- Install the stator assembly together with the wiring harness, tightening the 3 screws to the prescribed torque.
N.B.
INSERT THE RUBBER WIRING SEALING GASKET INTO
THE SPECIAL SEAT ON THE CRANKCASE.
Locking torques (N*m)
Stator retainers 8 - 10
ENG - 102
XEVO 400ie
XEVO 400ie
Engine
- Install the wiring guide bracket tightening the 2
screws to the prescribed torque.
Locking torques (N*m)
Stator cable harness guide bracket screws 3 - 4
Refitting the flywheel cover components
- Before reassembling, check that all components
are perfectly clean.
- For the cover, carefully check all lubrication channels, in particular:
- The 3 by-pass channels.
- Oil pressure sensor feeding duct.
- Oil vapour decantation chamber
ENG - 103
Engine
XEVO 400ie
- Temporarily install the distribution timing check
hole cover and the engine oil filling cap/bar.
- Insert the blow-by recovery duct using a new Oring.
- Tighten the screws to the prescribed torque.
Locking torques (N*m)
Blow-by recovery duct fixing screws 3 - 4
- Insert the spring and the by-pass piston on the
flywheel cover.
N.B.
LUBRICATE THE BY-PASS VALVE.
- Reinstall the blow-by reed valve using a new
sealing gasket.
- Reinstall the support with head and tighten the
screws to the prescribed torque.
Locking torques (N*m)
Supporting screws with bulkhead 0.3 - 0.4
- Correctly fit a new O-ring, do not allow it to come into contact with grease or oil.
FAILURE TO OBSERVE THIS PRECAUTION WILL IRRETRIEVABLY DEFORM THE O-RING.
- Refit the water pump cover and tighten the 6 fixing screws to the prescribed torque.
Locking torques (N*m)
Pump cover fixing screws: 3 ÷ 4
ENG - 104
XEVO 400ie
Engine
Refitting the flywheel cover
- Install a new oil filter, lubricate the gasket, screw
on and finally tighten to the prescribed torque.
Locking torques (N*m)
Engine oil filter 12 - 16
- Install the supply hose to the cylinder and connect the return hose to the pump cover using 3 new
clamps.
N.B.
TIGHTEN THE CLAMPS USING APPROPRIATE PLIERS,
PAYING ATTENTION NOT TO CONSTRICT THE HOSES
BUT ALSO TAKING CARE TO TIGHTEN THE CLAMPS SUFFICIENTLY.
- Install the pre-filter again and insert the engine oil
drain plug, tightening to the prescribed torque.
- Refill the engine with the prescribed type of oil.
Recommended products
AGIP CITY HI TEC 4T Engine oil
SAE 5W-40, API SL, ACEA A3, JASO MA Synthetic oil
Locking torques (N*m)
Engine oil drainage plug 24 ÷ 30
- Lubricate the intermediate gear seat with torque
limiter on the flywheel cover.
- Align the water pump movement sensor with a
reference and install the flywheel cover as described in the Flywheel cover chapter.
ENG - 105
Engine
XEVO 400ie
- Install a new gasket on the engine crankcase.
- Check the presence of the three centring dowels.
- Turn the crankshaft in order to align the countershaft movement sensor with a reference point on
the crankcase (see figure).
- Repeat the alignment for the water pump crankshaft using the same reference point on the engine.
N.B.
THIS PREPARATION IS USEFUL PARTICULARLY IN THE
EVENT OF REPAIRS WITH THE WATER PUMP COVER INSTALLED.
- Install the flywheel cover on the engine, paying attention to avoid interference between the stator and
rotor.
WARNING
FAILURE TO OBSERVE THIS PRECAUTION MAY RESULT IN DESTRUCTION OF THE CERAMIC
MAGNETS.
- Tighten the 14 retaining bolts of the cover to the
prescribed torque.
N.B.
THE BOLTS HAVE FOUR LENGTHS:
- THE 3 SHORTEST ARE INSERTED AS SHOWN IN THE
FIGURE.
- THE LONGEST IS INSERTED UNDER THE ENGINE OIL
FILLER PLUG.
ENG - 106
XEVO 400ie
Engine
N.B.
- THE INTERMEDIATE BOLTS FOR THE REMAINING
MOUNTING POINTS WITH THE EXCEPTION OF THE BOLT
FOR THE MANIFOLD SUPPORT (SHOWN IN THE FIGURE)
ARE SLIGHTLY LONGER.
Locking torques (N*m)
Flywheel cover screws 11 - 13
Flywheel and starting
Removing the starter motor
N.B.
THIS OPERATION MAY ALSO BE CARRIED OUT WITH FLYWHEEL COVER ASSEMBLED.
- Loosen the two fastening screws.
- Extract the complete starter motor.
Removing the flywheel magneto
N.B.
IF YOU MUST REMOVE THE FLYWHEEL, IT IS NECESSARY TO REMOVE THE CHAIN GUIDE
SLIDING BLOCK RETAIN PLATE FIRST.
- Unscrew the 3 fastening screws and remove the
chain guide sliding block retain plate and the startup rim.
ENG - 107
Engine
- Align the holes obtained on the flywheel with the
crankcase housing to allow the introduction of the
special tool.
- Tighten the bushing of the flywheel lock tool on
the removing tool threading.
- Insert the special tool as shown in the figure,
making sure that the pins are perfectly inserted into the previously aligned holes and that it is perfectly abutted and almost flush with the flywheel.
Specific tooling
020472Y Flywheel lock wrench
- Loosen the magneto flywheel fastening nut.
- Remove the special tool and the fastening nut.
ENG - 108
XEVO 400ie
XEVO 400ie
Engine
- Remove the washer.
- Insert the nut again so as to slightly uncover the
shaft and free the space that was occupied by the
washer.
CAUTION
THIS OPERATION IS REQUIRED AS THE FLYWHEEL IS
STRONGLY LOCKED; THE CONE DETACHMENT MAY
THEREFORE CAUSE THE ROTOR SLIPPAGE, WITH THE
CONSEQUENT BREAKAGE OF THE MAGNETS.
- Insert the special removing tool.
- Using a 27-mm wrench and a 19-mm bushing,
release the flywheel.
Specific tooling
020467Y Flywheel extractor
- Remove the extractor.
- Remove the nut and extract the flywheel with the
start-up rim.
- Remove the crankshaft key.
ENG - 109
Engine
- To remove the start-up rim from the freewheel it
is necessary to turn it clockwise and pull it out.
- Remove the freewheel from the flywheel by loosening the 6 fastening screws.
SINCE THE FREEWHEEL MUST BE REMOVED, IT IS ADVISABLE TO LOOSEN THE 6 FASTENING SCREWS IN
ADVANCE WITH THE FLYWHEEL STILL INSTALLED ON
THE CRANKSHAFT.
- The freewheel is coupled to the flywheel with high
precision; if removal is difficult, use 2 screws as
gripping points and as removing tools, if required.
- Extract the intermediate gear provided with torque limiter.
ENG - 110
XEVO 400ie
XEVO 400ie
Engine
Inspecting the flywheel components
- Check the integrity of the magnets.
- Check that the magnet support cage is free from
deformation or cracks.
- Check that the flywheel splines exhibit no loosening.
Starter gear rim
- Check that there is no wear or abnormal impressions on the "rollers" of the freewheel and on the
surface of the starter ring gear hub.
- Check the hub outside diameter.
Characteristic
Hub outside diameter:
Diameter 45.665 + 0.008 +0.005 mm
- Check the inside diameter of the bushing of the
starter gearing.
- Check that the toothing is not worn.
Characteristic
Inside diameter of the bushing:
Diameter 27 + 0.020 +0.041 mm
N.B.
IF THE FAULTS DISCOVERED AFFECT THE HUB, REPLACE THE STARTER RING GEAR AND
FREEWHEEL.
IF ONLY THE BUSHING IS WORN, IT IS POSSIBLE TO REPLACE ONLY THE COMPLETE STARTING RING GEAR. IN THAT CASE, CHECK ALSO THE DIAMETER AND THE SURFACE OF THE
CONNECTION ON THE CRANKSHAFT. IN CASE OR IRREGULARITIES, REPLACE THE CRANKSHAFT.
ENG - 111
Engine
XEVO 400ie
Intermediate gear
- Check that the toothing is not worn.
- Check the diameter of the two bearings.
Characteristic
Gear bearing diameter:
12 - 0 0.011 mm
Also check the shaft diameter on the flywheel cover and on the engine crankcase.
Characteristic
Bearing diameter on the flywheel cover
12 + 0.034 -0.016 mm
Bearing diameter on the engine crankcase:
12 + 0.034 -0.016 mm
N.B.
THE TORQUE LIMITER IS PROVIDED WITH 4 GEARS THAT HAVE THE FUNCTION OF CLUTCH
DRIVE PLATES.
Driven plates consist of 4 Belleville springs provided with grooved profiles; this assembly allows
transmitting torque lower than 10 kg.
In case of incorrect start-up manoeuvres, the limiter prevents any kicks, with consequent reversal
of direction of the crankshaft which would impair
the engine structure.
The limiter assembly cannot be overhauled. In case of irregularities on the toothed discs, replace the
assembly.
Refitting the free wheel
- Make sure the freewheel faying surfaces are in good condition.
- Thoroughly clean the free wheel to remove LOCTITE residue.
- Degrease the threading of the holes in the free wheel and the clamping screws.
- Apply the recommended product to the end of the screws.
Recommended products
Loctite 243 Medium strength threadlock
ENG - 112
XEVO 400ie
Engine
Medium Loctite 243 threadlock
- Fit the freewheel on the magneto flywheel making
sure that the ground side is in contact with the flywheel itself, i.e. with wheel Seeger ring visible.
- Lock the six clamping screws in criss-cross fashion to the prescribed torque.
Locking torques (N*m)
Screw fixing freewheel to flywheel 13 ÷ 15
- Oil the free wheel "rollers".
Refitting the intermediate gear
- Lubricate the gear housing on the engine crankcase.
- Insert the intermediate gear with torque limiter
ENG - 113
Engine
- Lubricate the inside bushing and the starter ring
gear hub surface.
- Install the start-up rim on the flywheel turning it
clockwise and inserting at the same time.
Refitting the flywheel magneto
- Insert the key on the crankshaft.
- Install the flywheel checking the proper insertion
of the key and engaging the torque limiter gear
with the start-up rim.
- Insert washer and nut on the crankshaft.
ENG - 114
XEVO 400ie
XEVO 400ie
Engine
- Tighten thoroughly the guide bushing of the flywheel lock tool and loosen by 1/4 turn.
N.B.
FAILURE TO OBSERVE THIS PRECAUTION CAUSES THE
LOCKING OF THE GUIDE ON THE FLYWHEEL.
Specific tooling
020472Y Flywheel lock wrench
- Align the 2 holes of the flywheel with the case
housing to allow the introduction of the special tool.
- Insert the special tool checking that the pins are
perfectly introduced into the seat.
Specific tooling
020472Y Flywheel lock wrench
- Tighten the flywheel lock nut to the prescribed
torque.
Locking torques (N*m)
Flywheel fixing nut 115 - 125
ENG - 115
Engine
- Install the chain guide retain plate tightening the
3 screws to the prescribed torque.
N.B.
BEFORE TIGHTENING THE SCREWS, MOVE THE STARTUP RIM IN CONTACT WITH THE CRANKCASE AND CHECK
THAT IT IS FREE TO ROTATE IN ANTICLOCKWISE DIRECTION.
Locking torques (N*m)
Chain guide sliding block retain plate fastening screws 3 ÷ 4
Refitting the starter motor
- Check that the O-ring is in good working order
and lubricate it.
- Insert the starter motor.
- Tighten the 2 fastening screws to the prescribed
torque.
Locking torques (N*m)
Starter screws 11 ÷ 13
Cylinder assy. and timing system
Removing the intake manifold
- Remove the 3 mounting screws.
- Remove the intake manifold unit.
ENG - 116
XEVO 400ie
XEVO 400ie
Engine
Removing the rocker-arms cover
- Loosen the 6 special screws with stop and the
relevant rubber gaskets.
- Remove the tappet cover with relevant gasket.
Removing the timing system drive
- Turn the engine to close the intake valves.
- Remove the central screw and the valve lifting
device mass stop bell using the special tool.
Specific tooling
020565Y Flywheel lock calliper spanner
- Remove the return spring and the valve lifting
mass with relevant travel end washer.
N.B.
BE CAREFUL NOT TO ALLOW THE WASHER AND SPRING
TO FALL INTO THE ENGINE THROUGH THE CHAIN COMPARTMENT.
ENG - 117
Engine
- Align the reference marks on the timing chain rim
with those on the head.
- Loosen the central screw on the tensioner first.
- Unscrew the 2 fastening screws and remove the
tensioner with relevant gasket.
Remove the inside hexagon screw and the counterweight as shown in the figure.
- Remove the timing belt rim from the camshaft.
- Remove the timing belt rim.
ENG - 118
XEVO 400ie
XEVO 400ie
Engine
Removing the cam shaft
- Unscrew the 3 fastening screws and remove
camshaft retaining bracket.
N.B.
REMOVING THE FASTENING SCREWS MAY BE DIFFICULT. BE CAREFUL NOT TO DAMAGE THE INSIDE HEXAGON. IF NECESSARY, SEPARATE THE THREADS IN
ADVANCE.
- Remove the cam shaft.
- Remove pins and rocking levers by the transmission side holes.
Removing the cylinder head
- Remove the spark plug.
- Remove the cooling system outlet sleeve with
thermostat.
ENG - 119
Engine
XEVO 400ie
- Remove the coolant temperature sensor.
N.B.
THE SENSOR CONTROLS BOTH INJECTION AND THE ANALOGUE INSTRUMENT ON THE PANEL. TO CHECK THIS
COMPONENT, SEE THE INJECTION CHAPTER.
- Remove the 2 fastening nuts on the head, on the
exhaust and on the intake side.
- Remove the two M6 screws into the distribution
channel and the M6 screw on the spark plug side
with the thermostat support.
N.B.
THE HEAD MAY BE REMOVED WITH THE CAMSHAFT, ROCKING LEVER PINS AND FITTING
BRACKET IF NECESSARY.
- Loosen the 4 head-cylinder fastening nuts in 2 or
3 times and in a crossed sequence.
- Remove the head, the 2 centring dowels, the
gasket and the lower chain guide sliding block.
N.B.
DO NOT REMOVE THE DOWELS IF THEY ARE FORCED
INTO THEIR SEAT.
CAUTION
WHEN YOU HAVE TO REMOVE THE HEAD, PREPARE A SUITABLE CONTAINER SINCE THE
THERMAL GROUP CONTAINS COOLANT.
ENG - 120
XEVO 400ie
Engine
Removing the valves
- Using the appropriate tool fitted with an adaptor,
remove the cotters, caps, springs and valves.
Specific tooling
020382Y Valve cotters equipped with part 012
removal tool
020382Y012 bush (valve removing tool)
CAUTION
ARRANGE THE VALVES SO AS TO RECOGNISE THE ORIGINAL POSITION ON THE HEAD (FLYWHEEL SIDE AND TRANSMISSION SIDE).
- Remove the oil guards using the special tool.
Specific tooling
020431Y Valve oil seal extractor
- Remove the spring supports.
N.B.
BLOW THE SEATS WITH COMPRESSED AIR TO FACILITATE THE SPRING SUPPORT REMOVAL.
ENG - 121
Engine
Removing the cylinder - piston assy.
- Remove the timing chain.
- Loosen the fastening screw and remove the
spacer and the tightening sliding block.
N.B.
IT IS ADVISABLE TO MARK THE CHAIN IN ORDER TO ENSURE THAT THE INITIAL DIRECTION OF ROTATION IS
MAINTAINED.
- Extract the cylinder with the relevant gasket and
the centring dowel.
N.B.
THE SECOND CENTRING IS ENSURED BY A PIN SET INTO
THE CYLINDER.
CAUTION
TO PREVENT DAMAGING THE PISTON, SUPPORT IT
WHILE REMOVING THE CYLINDER.
- Remove the 2 piston pin locking rings by the specific housings.
- Extract the pin and remove the piston.
N.B.
USE PAPER OR A CLOTH TO CLOSE THE CYLINDER
HOUSING MOUTH ON THE CRANKCASE TO PREVENT
SLIPPAGE OF ONE OF THE PIN LOCKING RINGS INTO
THE CASE.
- Remove the piston sealing rings and the oil scraper.
CAUTION
NOTE THE ASSEMBLY POSITIONS OF THE LININGS TO
PREVENT INVERTING THE POSITION IN CASE OF REUSE.
N.B.
BE CAREFUL NOT TO DAMAGE THE SEALING RINGS
DURING REMOVAL.
ENG - 122
XEVO 400ie
XEVO 400ie
Engine
Inspecting the small end
- Using a bore gauge, measure the connecting rod
small end diameter.
N.B.
IF THE CONNECTING ROD SMALL END DIAMETER EXCEEDS THE STANDARD DIAMETER, EXHIBITS WEAR OR
OVERHEATING, PROCEED TO REPLACE THE CRANKSHAFT AS DESCRIBED IN THE CRANKCASE AND
CRANKSHAFT CHAPTER.
Characteristic
Standard diameter:
22 + 0.025 +0.015 mm
Inspecting the wrist pin
- Check the pin outside diameter using a micrometer.
Characteristic
Standard diameter:
22 0 -0.004 mm
- Calculate the coupling clearance between pin
and connecting rod end.
Characteristic
Standard clearance:
0.015 ÷ 0.029 mm
Inspecting the piston
- Measure the diameter of the bearings on the piston.
Characteristic
Standard diameter:
22 + 0.006 + 0.001 mm
- Calculate the piston pin coupling clearance.
N.B.
ENG - 123
Engine
XEVO 400ie
THE PIN HOUSINGS HAVE 2 LUBRICATION CHANNELS. FOR THIS REASON, MEASUREMENT
MUST BE MADE ACCORDING TO THE PISTON AXIS.
Characteristic
Standard clearance:
0.001 ÷ 0.010 mm
- Measure the outside diameter of the piston, perpendicular to the gudgeon pin axis.
- Take the measurement in the position shown in
the figure.
N.B.
REFER TO THE «SPECIFICATIONS» SECTION FOR THE
SIZES OF THE PISTON AND THE CYLINDER-PISTON COUPLING CLEARANCES.
Characteristic
A:
10 mm
Piston diameter:
85.8 mm nominal value
- Using a bore meter, measure the cylinder inner
diameter at a given height according to the directions shown in the figure.
Characteristic
B:
43 mm
Standard diameter:
85.8 mm nominal value
- Check that coating is free from flakes.
- Check that the head matching surface exhibits no deformations or wear.
Characteristic
Maximum allowable run-out:
0.05 mm
ENG - 124
XEVO 400ie
Engine
- Pistons and cylinders are classified into categories based on their diameter. The coupling is carried
out in pairs (A-A, B-B, C-C, D-D).
N.B.
REFER TO THE «SPECIFICATIONS» SECTION FOR THE SIZES OF THE CYLINDER AND THE
CYLINDER-PISTON COUPLING CLEARANCES.
Inspecting the piston rings
- Alternately insert the three sealing rings into the
cylinder, in the area where it retains its original diameter. Using the piston, insert the rings perpendicularly to the cylinder axis.
- Make sure that each single sealing ring evenly
adheres to the cylinder liner. If it does not, this
means the ring is worn. Replace it.
- Measure the opening (see figure) of the sealing
rings using a feeler gauge.
- If higher values than those prescribed are measured, replace the linings.
Check the size of the sealing ring opening:
Compression ring: 0.15 ÷ 0.35 mm. Max. value 0.5 mm
Oil scraper ring: 0.25 ÷ 0.50 mm. Max. value 0.65 mm
Oil scraper ring: 0.25 ÷ 0.50 mm. Max. value 0.65 mm
Rings/housing coupling clearances:
Carefully clean the sealing ring housings.
Place a thickness gauge between the ring and the
housing as shown in the drawing and check the
coupling clearances.
Top ring Standard coupling clearance:
0.01÷0.06 mm
Maximum clearances allowed after use: 0.10
mm
Intermediate ring Standard coupling clearance:0.02÷0.07 mm
Maximum clearances allowed after use: 0.10
mm
Oil scraper ring Standard coupling clearance:
0.01÷0.06 mm
ENG - 125
Engine
Maximum clearances allowed after use: 0.10
mm
Replace the piston if clearances exceed the maximum limits specified in the table.
Removing the piston
- Install piston and wrist pin onto the connecting
rod, aligning the piston arrow the arrow facing towards the exhaust.
- Insert the locking ring into the special tool, with
the opening in the position indicated on the tool.
S = left
D= right
- Place the wrist pin stop ring into position using a
punch
ENG - 126
XEVO 400ie
XEVO 400ie
Engine
- Install the pin lock using the key shown in the
figure.
Specific tooling
020470Y Pin retainers installation tool
N.B.
THE TOOL FOR INSTALLING THE SNAP RINGS MUST BE USED MANUALLY.
CAUTION
USING A HAMMER MIGHT DAMAGE THE STOPS' HOUSING.
Choosing the gasket
- Provisionally fit the piston into the cylinder, without any base gasket.
- Install a dial gauge on the special tool using the short union, as shown in the figure.
Specific tooling
020475Y Piston position checking tool
- Using an abutment plane, reset the dial gauge
with a preload of a few millimetres.
- Finally fix the dial gauge.
- Check the perfect sliding of the feeler pin.
- Install the tool on the cylinder without changing
the dial gauge position.
- Lock the tool using the original head fixing nuts.
- Rotate the crankshaft up to the TDC (the inversion point of the dial gauge rotation)
- Measure the deviation from the reset value.
- Identify the thickness of the cylinder base gasket to be used for reassembly by the table below. Correctly identify the cylinder base gasket thickness to keep the correct compression ratio.
- Remove the special tool and the cylinder.
N.B.
ENG - 127
Engine
XEVO 400ie
IF DEVIATIONS (OR RECESSES OR PROJECTIONS) CLOSE TO THE CHANGE OF CATEGORY
ARE MEASURED, REPEAT THE MEASUREMENT AT THE OPPOSED SIDE. TO DO SO, REPEAT
THE TOOL INSTALLATION BY INVERTING ITS POSITION.
Characteristic
Recess / Projection measured 1
- 0.185 - - 0.10
Gasket thickness 1
0.4 ± 0.05
Recess / Projection measured 2
- 0.10 - + 0.10
Gasket thickness 2
0.6 ± 0.05
Recess / Projection measured 3
+ 0.10 ÷ + 0.185
Gasket thickness 3
0.8 ± 0.05
Refitting the piston rings
- Place the scraper ring spring on the piston.
- Install the scraper ring keeping the opening opposed to the spring junction and with the writing
"top" facing the piston top. The chamfered side of
the oil scraper ring should always be facing the
piston crown.
- Fit the second lining with the identification letter
or the writing "top" facing the piston crown. In any
case, the step must be facing opposite the piston
top.
- Install the first compression lining in the direction
imposed by the housing.
- It is advisable to use a fitter to facilitate the installation of the linings.
N.B.
THE TWO PISTON RINGS ARE MADE WITH A TAPERED
CYLINDRICAL CONTACT CROSS-SECTION. THIS IS TO
ACHIEVE A BETTER BEDDING.
- Misalign the lining openings at 120° as shown in the figure.
- Lubricate the components with engine oil.
- The engine uses the first compression lining with an L section.
ENG - 128
XEVO 400ie
Engine
Refitting the cylinder
- Insert the cylinder base gasket with the thickness
determined above.
- Using the fork and the ring clamp, fit the cylinder
as shown in the figure.
N.B.
BEFORE FITTING THE CYLINDER, CAREFULLY BLOW
THE LUBRICATION DUCT AND LUBRICATE THE CYLINDER LINER. CHECK THE PRESENCE OF THE TWO REFERENCE DOWELS.
Specific tooling
020468Y Piston assembly band
020512Y Piston fitting fork
Inspecting the cylinder head
- Using a trued bar and a feeler thickness gauge check that the cylinder head surface is not worn or
distorted.
Characteristic
Maximum allowable run-out:
0.1 mm
- In case of irregularities, replace the head.
- Check the sealing surfaces for the intake and exhaust manifold.
- Check that the camshaft and the rocking lever pin
capacities exhibit no wear.
- Check that the head cover surface is not worn.
- Check that the coolant sealing pad exhibits no
oxidation.
Inspecting the timing system components
- Check that the guide shoe and the tensioner shoe
are not worn out.
- Check that the crankshaft pinion and the camshaft timing gear and crankshaft pinion exhibit no
wear.
In case of wear of the sliding blocks, replace them.
In case of wear of the chain or rim, replace the entire unit.
ENG - 129
Engine
XEVO 400ie
N.B.
IF THE CHAIN HAS DAMAGED THE PINION, REPLACE THE CRANKSHAFT AS DESCRIBED IN
CHAPTER CRANKCASE AND CRANKSHAFT.
Chain tensioner:
- Remove the centre screw with the washer and
the tensioner spring. Check that the one-way
mechanism is not worn.
- Check the condition of the tensioner spring.
- If examples of wear are found, replace the whole
unit.
Inspecting the valve sealings
- Visually inspect the valve sealing surface.
CAUTION
DO NOT REVERSE THE FITTING POSITIONS OF THE VALVES (RIGHT - LEFT).
- If the sealing surface of the valve is found to be
interrupted at one or more points or is not flat, replace the valve.
- Insert the valves into the cylinder head.
- Alternatively check the intake and exhaust
valves.
- The test is carried out by filling the manifold with
petrol and checking that the head does not ooze
through the valves when these are just pressed
with the fingers.
ENG - 130
XEVO 400ie
Engine
Inspecting the valve housings
- Clean the valve seats of any carbon residues.
- Using the Prussian blue, check the width of the
impression on the valve seat "V".
Characteristic
Standard value:
1 - 1.3 mm
Admissible limit:
1.6 mm
- If the impression width on the valve seat is larger than the prescribed limits, true the seats with a 45°
mill and then grind.
- In case of excessive wear or damage, replace the head.
Inspecting the valves
- Measure the diameter of the valve stems in the three positions indicated in the diagram.
STANDARD DIAMETER
Specification
Inlet:
Outlet:
Desc./Quantity
4.987 - 4.972 mm
4.975 - 4.960 mm
MINIMUM ADMISSIBLE DIAMETER
Specification
Inlet:
Outlet:
Desc./Quantity
4.96 mm
4.945 mm
- Calculate the clearance between valve and valve guide.
ENG - 131
XEVO 400ie
Engine
- Check the deviation of the valve stem by resting
it on a «V» shaped abutment and measuring the
extent of the deformation with a dial gauge.
Characteristic
Limit values admitted:
0.1 mm
- Check the concentricity of the valve head by arranging a dial gauge at right angle relative to the
valve head and rotate it on a "V" shaped abutment.
Characteristic
Admissible limit:
0.03 mm
Inspecting the valve stem guide clearance
- After measuring the valve guide diameter and the valve stem diameter, check clearance between
guide and stem.
INLET
Specification
Standard clearance:
Admissible limit:
Desc./Quantity
0.013 - 0.04 mm
0.08 mm
OUTLET
Specification
Standard clearance:
Admissible limit:
ENG - 132
Desc./Quantity
0.025 ÷ 0.052 mm
0.09 mm
XEVO 400ie
Engine
STANDARD VALVE LENGTH
Specification
Inlet:
Outlet:
Desc./Quantity
95.0 ± 0.3 mm
94.2 ± 0.3 mm
- Check that there are no signs of wear on the surface of contact with the articulated register terminal.
- If no anomalies are found during the above
checks, you can use the same valves. To obtain
better sealing performance, grind the valve seats.
Grind the valves gently with a fine-grained lapping
compound. During the grinding, keep the cylinder
head with the valve axes in a horizontal position.
This will prevent the lapping compound residues
from penetrating between the valve stem and the
guide (see figure).
CAUTION
TO AVOID SCORING THE FAYING SURFACE, DO NOT KEEP ROTATING THE VALVE WHEN NO
LAPPING COMPOUND IS LEFT. CAREFULLY WASH THE CYLINDER HEAD AND THE VALVES
WITH A SUITABLE PRODUCT FOR THE TYPE OF LAPPING COMPOUND BEING USED.
CAUTION
DO NOT REVERSE THE FITTING POSITIONS OF THE VALVES (RIGHT - LEFT).
Inspecting the springs and half-cones
- Check that the upper and lower supporting spring
washers, the cotters and the oil seal show exhibit
no signs of abnormal wear. Replace a component
when worn.
ENG - 133
XEVO 400ie
Engine
- Measure the unloaded spring length.
Characteristic
Standard length:
44.4 mm
Admissible limit after use:
42.4 mm
Refitting the valves
- Place the valve spring support washers on the
head.
- Alternately insert the 4 oil guards using the special tool.
- Lubricate the oil guards and the valve guides.
Specific tooling
020306Y Punch for assembling valve seal
rings
- Fit the valves, the springs and the caps. Using
the appropriate tool with adapter, compress the
springs and insert the cotters in their seats.
Specific tooling
020382Y Valve cotters equipped with part 012
removal tool
020382Y012 bush (valve removing tool)
N.B.
DO NOT CHANGE THE VALVE FITTING POSITION. FIT THE VALVE SPRINGS WITH THE REFERENCE COLOUR ON COTTER SIDE (TURNS WITH GREATER PITCH).
Inspecting the cam shaft
- Check that the camshaft bearings exhibit no scores or abnormal wear.
- Using a micrometer, measure the camshaft bearings.
STANDARD DIAMETER
Specification
Bearing A Ø:
Bearing B diameter:
ENG - 134
Desc./Quantity
42 - 0.060 -0.085 mm
20 - 0.020 -0.041 mm
XEVO 400ie
Engine
MINIMUM ADMISSIBLE DIAMETER
Specification
Bearing A Ø:
Bearing B diameter:
Desc./Quantity
41.910 mm
19.940 mm
-Using a gauge, measure the cam height.
STANDARD HEIGHT
Specification
intake
discharge
Desc./Quantity
33.774 mm
33.273
ADMISSIBLE LIMITS
Specification
intake
discharge
Standard axial clearance:
Maximum admissible axial clearance:
Desc./Quantity
33.526 mm
33.026 mm
0 - 0.22 mm
0.3 mm
- If any of the above dimensions are outside the
specified limits, or there are signs of excessive
wear, replace the defective components with new
ones.
- Check that the retaining plate seat shown in the
figure exhibits no wear.
ENG - 135
Engine
XEVO 400ie
- Check that the automatic valve lifting device cam,
the travel end roller and the rubber abutment on
the containment bell are free from wear.
- Check that the valve lifting spring has not yielded.
- Replace any defective or worn components.
- Check that the rocking lever pins exhibit no scores or wear.
Characteristic
Standard diameter:
13 - 0.010 -0.018 mm
- Measure the inside diameter of each rocking lever.
Characteristic
Standard diameter:
13 + 0.026 +0.015 mm
- Check that the cam contact sliding block and the articulated register plate is free from wear.
- In case of wear, replace the component.
Refitting the head and timing system components
- Insert the chain guide sliding block.
- Insert the two centring dowels between head and
cylinder.
- Install the head gasket.
N.B.
THE FIGURE SHOWS THE INSERTION POSITION OF THE TWO CENTRING DOWELS BETWEEN
HEAD AND CYLINDER. THE DIRECTION OF INSTALLATION FOR THE GASKET IS FORCED BY
THE DOWELS.
ENG - 136
XEVO 400ie
Engine
- The head gasket is made of steel and has a
standard thickness.
- Check that the head lubrication channel is perfectly clean. Clean with compressed air jets, if
required.
- Insert the head.
- Lubricate the stud bolts and the 4 fixing stud
bolts.
- Tighten the 4 fixing stud bolts crosswise to the prescribed torque as shown in the figure.
Locking torques (N*m)
Head fixing stud bolts ***
*** Apply a preliminary torque of 7 Nm in a crossed
sequence.
- Tighten by 90° in a crossed sequence.
- tighten again by 90° in a crossed sequence.
- Tighten the fastening nuts on the exhaust and on
the intake side to the prescribed torque.
Locking torques (N*m)
Exhaust / intake head fixing nuts 10 - 12
ENG - 137
Engine
- Tighten the 3 side screws to the prescribed torque.
Locking torques (N*m)
Head fixing screws 10 - 12
- Install the coolant temperature sensor with the
washer and tighten to the prescribed torque.
CAUTION
FAILURE TO OBSERVE THE TIGHTENING TORQUE CAN
DAMAGE THE SENSOR.
Locking torques (N*m)
Coolant temperature sensor: 10 - 12
- Install the spark plug and tighten to the prescribed torque.
Locking torques (N*m)
Spark plug 12 ÷ 14
- Insert the timing control belt on the crankshaft
according to the initial direction of rotation.
- Install the tensioner shoe with its spacer, tightening the bolt to the prescribed torque, using the
recommended product.
Recommended products
Loctite 243 Medium strength threadlock
Medium Loctite 243 threadlock
Locking torques (N*m)
Tensioner sliding block fixing screw 10 - 14
- Insert pins and rocking levers on the flywheel
side.
- Lubricate the two rocking levers through the
holes at the top.
ENG - 138
XEVO 400ie
XEVO 400ie
Engine
- Clean the camshaft by blowing with little compressed air jets, especially the retaining plate
housing.
- Lubricate the 2 shafts.
- Insert the camshaft into the head with the cams
opposite the rocking levers.
- Remove any LOCTITE residues from the screws
fixing the camshaft retaining bracket using a
brush.
- Apply the recommended product to the fixing
screws and tighten to the prescribed torque.
Recommended products
Loctite 243 Medium strength threadlock
Medium Loctite 243 threadlock
- Insert the camshaft retain bracket with visible countersinks and tighten the 3 fastening screws to the
prescribed torque, being careful not to damage the inside hexagon.
Locking torques (N*m)
Camshaft retaining bracket screws: 4 ÷ 6
- Install the intermediate gear with torque limiter,
the flywheel and its cover, as described in Chapter
"Flywheel and start-up system", and in Chapter
"Flywheel cover".
N.B.
FOR MORE CONVENIENCE, INSTALL THE FLYWHEEL
COVER WITHOUT THE COOLING SYSTEM SLEEVES.
- Using the TORX wrench, remove the timing
check cap.
ENG - 139
Engine
- Insert the belt on the camshaft control timing rim.
- Insert the timing rim on the camshaft checking
that the references are aligned.
N.B.
DURING THE STROKE CHECK, KEEP THE BELT TENSIONED BY PRESSING ON THE TIGHTENER COMPARTMENT SIDE.
- Keeping the belt slightly pulled, turn the crankshaft using the driving pulley to make the reference
on the magnet support collimate with that on the
flywheel cover.
- Install the counterweight mass.
- Centre using the bell fastening screw.
- Lock the mass fixing screws to the prescribed
torque, using the recommended product.
Recommended products
Loctite 243 Medium strength threadlock
Medium Loctite 243 threadlock
Locking torques (N*m)
Counterweight screw 7 ÷ 8.5
- Remove the central screw.
- Install the valve lifting mass being careful to the
proper positioning of the travel end ring.
- Lubricate the mass and de-compressor control
pin.
ENG - 140
XEVO 400ie
XEVO 400ie
Engine
- Install the return spring and load it by about 3/4
turn.
- Turn the engine to move the references to the top
as shown in the figure (intake end).
- Insert the valve lifting device mass stop bell.
- Tighten the retaining screw to the prescribed torque, using the recommended product.
N.B.
THE BELL TIMING IS ENSURED BY THE COUNTERWEIGHT MASS FASTENING SCREW HEAD.
Recommended products
Loctite 243 Medium strength threadlock
Medium Loctite 243 threadlock
- Check that the decompression mass is free and
that it is pulled by the spring.
Locking torques (N*m)
Valve lifter mass stop bell fixing screws 30 - 35
ENG - 141
XEVO 400ie
Engine
- Place the tightener cursor in the rest position,
keeping the retain tab pressed.
- Install a new tightener on the cylinder using a new
gasket.
- Tighten the two fastening screws to the prescribed torque.
Locking torques (N*m)
Tightener fastening screws: 11 ÷ 13
- Insert the spring with the central screw and the
washer.
- Tighten the central screw to the prescribed torque.
Locking torques (N*m)
Tightener screw: 5 ÷ 6
- Place the engine with the valve clearance adjustment timing references aligned with the head.
- Check the clearance between valve and rocking lever using a thickness gauge.
PRESCRIBED CLEARANCE
Specification
Inlet
drainage
- In case different values are found, adjust by loosening the lock nut and use a screwdriver for the set
screw as shown in the figure.
ENG - 142
Desc./Quantity
0.15 mm (engine cold)
0.15 mm (engine cold)
XEVO 400ie
Engine
Refitting the timing chain
The ignition advance is determined electronically on the basis of parameters known by the control unit.
For this reason it is not possible to interpret the reference values based on the engine rpm.
The ignition advance value is detectable at any time using the diagnostic tester.
It is possible to check whether the ignition advance determined by the injection system matches the
value actually activated on the engine, by means of the stroboscopic light.
Specific tooling
020680Y Diagnosis Tool
020330Y Stroboscopic light to check timing
Proceed as follows:
- Remove the outside transmission cover as described in the automatic transmission chapter.
- Remove the TDC reference inspection cap between flywheel and crankcase cover. See the flywheel cover chapter.
- By the driving pulley, turn the engine to find the
alignment of the references to identify the TDC.
ENG - 143
Engine
- Repeat for the reference between driving pulley
and transmission housing.
- Refit the inspection cap on the flywheel side.
- Connect the diagnostic tester.
- Start the engine.
- Select the «parameters» function in this menu.
- Select the stroboscopic light control in the traditional four-stroke engine position (1 spark, 2 revs).
- Check that the real values of rpm and ignition
advance match those measured using the diagnostic tester.
Specific tooling
020680Y Diagnosis Tool
If the values do not match, check:
- distribution timing
- revolution timing sensor
- injection control unit
Refitting the rocker-arms cover
- Check that the gasket is in good working order.
ENG - 144
XEVO 400ie
XEVO 400ie
Engine
- Tighten the two screws indicated in the figure with
«1» and «2» to limit the reciprocal sliding of the
cover surface with the head surface.
- Tighten the remaining 4 screws in a crossed sequence (3, 4, 5, 6).
N.B.
CHECK THE PROPER POSITION OF THE GASKET.
Locking torques (N*m)
Tappet cover fixing screws 7 - 9
- Install the transmission cover and the relevant
mesh filter and the outside transmission cover as
described in the "Automatic transmission" chapter.
- Install the cooling system sleeves using new
bands, as described in the "Flywheel cover" chapter.
Refitting the intake manifold
- Install the intake manifold on the engine.
- Insert the 3 fastening screws, one of which with
a support band for the cooling system sleeve, and
tighten to the prescribed torque.
Locking torques (N*m)
Inlet manifold screws 11 ÷ 13
Crankcase - crankshaft
- Remove the outside and inside transmission cover and the complete driving pulley as described in
"Automatic transmission".
ENG - 145
Engine
XEVO 400ie
- Remove the flywheel cover with the cooling system sleeves, as described in the "Flywheel cover"
chapter.
- Remove the flywheel with the starting system following the instruction given in "Flywheel and Starting
system".
- Remove the thermal group (cylinder, head, piston) as described in the «Thermal group and timing
system chapter».
- Before opening the crankcase, check the crankshaft axial clearance.
For this purpose, use a plate (e.g. the special tool) and a support with special tool comparator.
Specific tooling
020262Y Crankcase splitting plate
020335Y Magnetic support for dial gauge
Characteristic
Standard clearance:
0.10 - 0.50 mm
Admissible increase limit after use:
0.60 mm
- Upper clearances are an indication of wear on the surfaces of the crankshaft casing support.
- To carry out an accurate measurement, measure the clearance in both directions between crankcase
and crankshaft.
Splitting the crankcase halves
- Remove the engine support retain screw on the
flywheel side half-crankcase.
ENG - 146
XEVO 400ie
Engine
- Remove the 14 crankcase coupling screws.
N.B.
THE FASTENING SCREWS ARE OF 3 DIFFERENT
LENGTHS. NOTE THEIR CORRECT POSITION.
- Split the crankcases while keeping the crankshaft
inserted on the flywheel side half-crankcase.
- Remove the coupling gasket.
N.B.
THE BUSHING SUPPORT CAN BE LEFT IN THE FLYWHEEL SIDE HALF-CRANKCASE.
Removing the crankshaft
- Before removing the crankshaft, check the timing
with the countershaft. To carry out this check, turn
the crankshaft to align the two holes obtained on
the crankshaft with the hole on the countershaft
control gear.
This is an optimal position also to remove the
crankshaft.
- Remove the crankshaft with the shim adjustment
washer on the flywheel side.
CAUTION
WHILE OPENING THE CRANKCASE AND REMOVING THE
CRANKSHAFT, CHECK THAT THE SHAFT THREADED
ENDS DO NOT INTERFERE WITH THE MAIN BEARINGS.
FAILURE TO OBSERVE THIS PRECAUTION CAN DAMAGE
THE MAIN BEARING.
ENG - 147
Engine
Removing the oil pump and countershaft control gear.
- To remove the control gear, loosen the 4 fastening screws.
Remove the gear only if actually required.
CAUTION
THE SCREWS HAVE A COUNTERSUNK HEAD AND THEIR
THREADING IS LOCKED BY LOCTITE. BE CAREFUL NOT
TO DAMAGE THE CONTROL HEXAGON. TO OBTAIN BETTER RESULTS IT IS PREFERABLE TO USE AN INSIDE
HEXAGON SOCKET WRENCH.
Removing the countershaft
- Place the special tool as shown in the figure.
Specific tooling
020479Y Countershaft lock wrench
- Remove the fastening nut with relevant washer.
- Remove the special tool and extract the countershaft with the control gear.
ENG - 148
XEVO 400ie
XEVO 400ie
Engine
Replacing the countershaft bearings
- Check that the bearings are free from irregular
noise or clearance. If it does, replace it.
Flywheel-side half-crankcase
- Remove the inside Seeger ring.
- Upturn the half-crankcase.
- Remove the bearing from the flywheel side halfcrankcase using the special tool and a mallet.
Specific tooling
020376Y Adaptor handle
020358Y 37x40-mm Adaptor
020439Y 17-mm guide
- Remove the bearing from the transmission side
half-crankcase using the special tool.
Specific tooling
001467Y008 Pliers to extract 17 mm ø bearings
001467Y007 Driver for OD 54-mm bearings
- Before installing a new bearing, heat the flywheel
side half-crankcase using the special tool.
- Place the half-crankcase on a wooden base.
Specific tooling
020151Y Air heater
ENG - 149
Engine
- Insert a new bearing on the special tool after
greasing the guide seat.
- Install the new bearing on the half-crankcase using the special tool.
N.B.
IF A BEARING WITH PLASTIC CAGE IS USED, KEEP THE
BALLS VISIBLE FROM THE CRANKCASE INTERNAL
SIDE.
Specific tooling
020376Y Adaptor handle
020359Y 42x47-mm Adaptor
020439Y 17-mm guide
- Fit the Seeger ring.
- Before installing the new bearing on the transmission side crankcase, heat the seat using the
special tool.
Specific tooling
020151Y Air heater
- Insert a new bearing on the special tool after
greasing the guide seat.
- Install the new bearing on the engine crankcase
using the special tool.
N.B.
IF A BEARING WITH PLASTIC CAGE IS USED, KEEP THE
BALLS VISIBLE FROM THE CRANKCASE INTERNAL
SIDE.
Specific tooling
020376Y Adaptor handle
020359Y 42x47-mm Adaptor
ENG - 150
XEVO 400ie
XEVO 400ie
Engine
020439Y 17-mm guide
Inspecting the crankshaft components
- Check the axial clearance on the connecting rod.
Characteristic
Standard clearance:
0.20 ÷ 0.40 mm
- Check the connecting rod diametrical clearance.
Characteristic
Standard clearance:
0.046 ÷ 0.076 mm
-Check the surfaces that limit the axial free-play
are not scored and measure the width of the crankshaft between these surfaces, as shown in the
diagram.
N.B.
BE CAREFUL NOT TO LET THE MEASUREMENT BE AFFECTED BY THE UNIONS WITH THE CRANKSHAFT ENDS.
Characteristic
Standard dimensions:
63.6 - 63.45 mm
CAUTION
THE CRANKSHAFT CAN BE REUSED WHEN THE WIDTH FALLS WITHIN THE STANDARD VALUES AND THE SURFACES ARE FREE FROM SCRATCHES.
Shimming
- Check the overall height of the crankshaft - shoulders - gear assembly.
Characteristic
Standard thickness:
71.804 - 72.000 mm
- Check that shim adjustment is free from scratches.
N.B.
ENG - 151
XEVO 400ie
Engine
IN CASE OF NEW UTILISATION, MAINTAIN THE FIRST FITTING POSITION.
Specific tooling
020074Y Support base for checking crankshaft alignment
- If the crankshaft - crankcase axial clearance is higher than the standard value and the crankshaft
exhibits no irregularity, the problem is caused by wear or by a wrong machining on the engine crankcase.
- Check the diameters of both bearings of the
crankshaft in accordance with the axes and surfaces shown in the figure. Half shafts are classified
into two categories, Cat 1 and Cat. 2. Refer to the
chart below.
STANDARD DIAMETER
Specification
Cat. 1
Cat. 2
Desc./Quantity
40.010 ÷ 40.016
40.016 ÷ 40.022
Inspecting the crankshaft alignment
- Install the crankshaft on the support and measure the displacement at the 4 points shown in the figure.
Specific tooling
020074Y Support base for checking crankshaft alignment
MAX ADMISSIBLE DISPLACEMENT:
Specification
A
B
C
D
Desc./Quantity
= 0.15 mm
= 0.01 mm
= 0.01 mm
= 0.10 mm
- Check that the driving shaft cone, the tab seat, the oil seal capacity, the toothed gear and the threaded
tangs are in good working order.
- In case of failures, replace the crankshaft.
ENG - 152
XEVO 400ie
Engine
N.B.
MAIN BEARINGS CANNOT BE MODIFIED.
The connecting rod cannot be replaced. To check the connecting rod small end diameter, see chapter
"Thermal group and timing system".
- When cleaning the crankshaft, be careful to prevent any impurity from entering into the shaft lubrication
hole.
N.B.
IN CASE OF REPLACEMENT OF A CRANKSHAFT CONSISTING OF TWO HALF-SHAFTS OF DIFFERENT CATEGORY, REPLACE THE TWO HALF-CRANKCASES AS WELL, COUPLING THE TWO
COMPONENTS (SHAFT AND CRANKCASE) WITH THE SAME CATEGORY.
- To check the gearing of the crankshaft, see section "Thermal group and timing system".
See also
Cylinder assy. and timing system
Inspecting the crankcase halves
- Before proceeding to check the crankcase
halves, thoroughly clean all surfaces and oil ducts.
- For the transmission-side half-crankcase, special
attention should be given to the bushings, to the
cooling jet on the transmission side (see figure)
and to the lubrication duct.
N.B.
THE JET IS FED THROUGH THE MAIN BUSHINGS. PROPER OPERATION OF THIS COMPONENT IMPROVES THE
PISTON TOP COOLING. CLOGGING HAS EFFECTS THAT
ARE DIFFICULT TO DETECT (PISTON TEMPERATURE INCREASE). FAILURE OR LEAK CAN CONSIDERABLY DECREASE THE MAIN BUSHING AND CONNECTING ROD
LUBRICATION PRESSURE.
ENG - 153
Engine
XEVO 400ie
- For the flywheel side half-crankcase, special attention should be given to the lubrication channels
for the main bearings and to the compartment and
the channels for the oil pump, as well as to the duct
for the by-pass located on the flywheel cover.
N.B.
AS ALREADY DESCRIBED IN THE "LUBRICATION" CHAPTER, IT IS ESPECIALLY IMPORTANT THAT THE BY-PASS
HOUSING ON THE FLYWHEEL COVER IS FREE FROM
WEAR THAT MAY IMPAIR THE PROPER SEALING OF THE
LUBRICATION PRESSURE ADJUSTMENT PISTON. THE
HEAD LUBRICATION CHANNEL IS EQUIPPED WITH A
SHUTTER JET; THIS GIVES A "LOW PRESSURE" HEAD
LUBRICATION. THIS CHOICE WAS MADE TO REDUCE
THE OIL TEMPERATURE IN THE SUMP.
The jet clogging impairs the head lubrication and the timing mechanisms.
A jet failure causes a decrease in the main bearing and connecting rod lubrication pressure.
- Check that the surfaces exhibit no dents or deformations, with special attention to the crankcase
coupling and the crankcase-cylinder surfaces.
- Any defects in the crankcase gasket or matching surfaces (see Flywheel cover coupling) can cause
pressurised oil leaks, thereby affecting the connecting rod and main bearing lubrication pressure.
- Check the main bearing seats that limit axial clearance in the crankshaft exhibit no wear. For the
dimensional check, refer to the instructions about checking the axial clearance and the dimensions on
the crankshaft
Inspecting the crankshaft plain bearings
- To obtain a good bushing lubrication it is necessary to have both an optimal lubricating pressure
(4 bar) and a good oil flow rate; the bushings must
be correctly positioned so as not to obstruct the oil
supply channels.
- The main bushings are comprised of two halfbearings, one with holes and channels for lubrication whereas the other is solid.
- The solid half-bearing is intended to stand the thrusts caused by combustion, and for this reason it is
arranged opposite the cylinder.
- To prevent obstructions in the oil feeding channels, the matching surface of the two half-bearings must
be perfectly perpendicular to the cylinder axis, as shown in the figure.
- The oil feeding channel section is also affected by the bushings driving depth compared with the
crankshaft axial clearance of the limiting surface.
N.B.
TO KEEP THE BUSHINGS ON THE CRANKCASE IN SUCH POSITION, DRIVING IS FORCED ON
CAST-IRON RINGS INSERTED IN THE CASTING OF BOTH CRANKCASE HALVES.
ENG - 154
XEVO 400ie
Engine
- Check the inside diameter of the main bushings
in the three directions indicated in the diagram.
- Repeat the measurements for the other bushing
half. see diagram.
N.B.
DO NOT TAKE THE MEASUREMENT ON THE TWO HALFSHELL COUPLING SURFACE SINCE THE ENDS ARE RELIEVED TO ALLOW BENDING DURING THE DRIVING
OPERATION.
Before assembling, check that the clearance between the engine crankcase bushing and the crankshaft
is within the predetermined limits.
Characteristic
Crankshaft-bushing maximum clearance admitted:
0.08 mm
- The standard bushing diameter after driving is variable on the basis of a coupling selection.
- The crankcase bushing seats are classified into 3 categories while the crankshaft ones, into 2 categories.
- Bushings are subdivided into 4 categories according to their thickness (see the table).
CHECK THE BENCH BUSH
Name
Type A - Red
Type B - Blue
Type C - Yellow
Type D - Green
Description
Dimensions
1.971 ÷ 1.974
1.974 ÷ 1.977
1.977 ÷ 1.980
1.980 ÷ 1.983
Initials
Quantity
Coupling chart
The following kinds of bushings indicated in the table must be used according to the kind of coupling
between the crankshaft and the crankcase.
ENG - 155
Engine
XEVO 400ie
KEY
X = Crankshaft category
Y = Crankcase half-shell category
A = Red
B = Blue
C = Yellow
D = Green
In case of breakdown, crankcases are together with bushings and are classified according to the centre
to centre distance of the countershaft. Find below the possible couplings.
- Complete FC1 type crankcase equipped with bushings for housing a category 1 crankshaft and a
countershaft with centre to centre distance A.
- Complete FC2 type crankcase equipped with bushings for housing a category 2 crankshaft and a
countershaft with centre to centre distance A.
- Complete FC3 type crankcase equipped with bushings for housing a category 1 crankshaft and a
countershaft with centre to centre distance B.
- Complete FC4 type crankcase equipped with bushings for housing a category 2 crankshaft and a
countershaft with centre to centre distance B.
N.B.
THE CRANKSHAFT CATEGORY IS STAMPED ON THE COUNTERWEIGHT SHOULDER.
A spare crankcase cannot be combined with a driving shaft with mixed categories. Spare shafts have
half-shafts of the same category.
N.B.
TO REPLACE THE HALF-SHAFTS, REMOVE THE COUNTERSHAFT BEARINGS AS DESCRIBED
ABOVE. REMOVE THE COMPLETE DRIVEN PULLEY AND THE ANTI-FLAPPING ROLLER FROM
ENG - 156
XEVO 400ie
Engine
THE TRANSMISSION SIDE HALF-CRANKCASE, AS DESCRIBED IN CHAPTER "AUTOMATIC
TRANSMISSION", AND THE HUB COVER WITH THE RELEVANT GEARS AND BEARINGS AS
DESCRIBED IN CHAPTER "FINAL REDUCTION".
Countershaft
- Using a micrometer, measure the 2 bearings of
the countershaft as shown in the figure.
Characteristic
Standard diameter:
17 - 0.01 - 0.02 mm
- Check that the water pump drive is not worn.
Refitting the crankshaft
- Check that the oil pump and countershaft control gear are free from deformations or dents. Replace,
if required.
N.B.
IF YOU HAVE TO REPLACE THE OIL PUMP AND COUNTERSHAFT CONTROL GEAR IT IS NECESSARY TO REPLACE THE COUNTERSHAFT GEAR AS WELL.
- Before installing the gear on the crankshaft, carefully clean the two matching surfaces removing
any residues of LOCTITE from the holes using a
brush.
Blow with compressed air and degrease the mounting holes on both surfaces to make the new LOCTITE
grip.
Apply the recommended product to the holes again.
Recommended products
Loctite 243 Medium strength threadlock
Medium Loctite 243 threadlock
- Repeat the same procedure for the 4 fastening screws.
- Insert the control gear on the crankshaft with the hole countersink visible.
- Tighten the 4 fastening screws to the prescribed torque.
N.B.
ENG - 157
Engine
XEVO 400ie
TO AVOID DAMAGING THE SCREW CONTROL HEXAGON, IT IS PREFERABLE TO USE AN INSIDE HEXAGON SOCKET WRENCH.
Locking torques (N*m)
Gear mounting on crankshaft screws 10 -12
- Lubricate the main bearing on the flywheel side
half-crankcase.
- Lubricate the shim adjustment washer.
- Insert the shim adjustment washer on the crankshaft in its original position.
- Insert the special timing tool in the hole on the
countershaft.
Specific tooling
020471Y Pin for countershaft timing
- Insert the crankshaft on the pin and into the bushing.
- Before inserting thoroughly, make the oil pump
gear align with the control gear.
- Insert thoroughly and remove the special tool.
N.B.
WHEN INSERTING THE SHAFT ON THE HALF-CRANKCASE, BE CAREFUL NOT TO DAMAGE
THE MAIN BEARING WITH THE THREADED TANG OF THE CRANKSHAFT AND WITH THE TIMING CONTROL TOOTHED PINION.
- Install the oil pump closing plate.
- Tighten the 2 flanged fastening screws to the
prescribed torque.
Locking torques (N*m)
Bulkhead screws for oil pump housing cover 8
- 10
ENG - 158
XEVO 400ie
Engine
Refitting the crankcase halves
- Remove the oil guard from the transmission side
half-crankcase using a screwdriver.
- Install a new oil guard after lubricating it, using
the special tool, arranging it at a 0.5 mm recess
from the crankcase plane.
CAUTION
A WRONG POSITIONING OF THE OIL GUARD AFFECTS
THE LUBRICATION OIL CIRCULATION.
Specific tooling
020360Y 52x55-mm Adaptor
020376Y Adaptor handle
- Insert the gasket on the flywheel side half-crankcase.
- Lubricate the main bearing on the transmission
side half-crankcase.
- Couple the 2 half-crankcases being careful
not to damage the bushing on the transmission side half-crankcase with the threaded
tang of the crankshaft.
- Insert the engine support retain screw on the flywheel side half-crankcase without tightening.
- Insert the 14 fastening screws by arranging the
single shorter screw «A» and the single longer
screw «B» as shown in the figure.
- Tighten the screws thoroughly and tighten to the prescribed torque.
ENG - 159
XEVO 400ie
Engine
- Check that the crankshaft rotates freely.
N.B.
REMOVE ANY EXCESS FROM THE CRANKCASE COUPLING GASKET ON THE CYLINDER
PLANE, TO ENSURE BETTER SEALING PERFORMANCE.
Locking torques (N*m)
Engine-crankcase coupling screws 11 ÷ 13
- Install the thermal group (cylinder, head, piston) as described in section «Thermal group and timing
system».
- Install the flywheel with start-up control as described in the "Flywheel and start-up" chapter.
- Install the flywheel cover with the cooling system sleeves, as described in the "Flywheel cover chapter".
- Install the complete driving pulley, the transmission cover and the relevant mesh filter and the outside
transmission cover as described in the «Automatic transmission» chapter.
See also
Flywheel cover
Cylinder assy. and timing system
Lubrication
TECHNICAL SPECIFICATIONS
SUMP CAPACITY
Specification
Overhaul
Oil and filter replacement
Desc./Quantity
1.7 l
1.5 l
RECOMMENDED ENGINE OIL
Product
AGIP CITY HI TEC 4T
Description
Engine oil
Specifications
SAE 5W-40, API SL, ACEA A3, JASO MA
Synthetic oil
OIL PUMP
Specification
Type
Rotor washers
Assembly clearances
External rotor radial clearance
Rotor axial clearance
Desc./Quantity
Trochoidal
8 mm
Lobe ends 0.05-0.008 mm
0.05- 0.12 mm
0.025 - 0.065 mm
BY-PASS
Specification
Type
Plunger diameter
Spring free length
Calibration pressure
Desc./Quantity
with piston
13.9 - 0.039 -0.057 mm
62.5 mm
4 bar
PRE-FILTER
Specification
Type
ENG - 160
Desc./Quantity
mesh, plastic
XEVO 400ie
Engine
OIL FILTER
Specification
Type
Desc./Quantity
Paper with pressure relief and anti-drain back by-pass valves
OIL MINIMUM PRESSURE INDICATOR LIGHT SWITCH
Specification
Calibration
Desc./Quantity
0.3 - 0.6 bar
HEAD LUBRICATION CONTROL JET
Specification
Diameter
Desc./Quantity
1 ± 0.05 mm *
* Tightening torque 5÷7 N·m
PISTON COOLING NOZZLE
Specification
Diameter
Desc./Quantity
0.8 ± 0.05 mm
CRANKCASE VENTILATION CHECK
Specification
Device
Desc./Quantity
metal reed valve and decantation chamber
Conceptual diagrams
PRINCIPLE DIAGRAM
Specification
A
B
C
D
E
Desc./Quantity
Camshaft
Cylinder-head plane
Cylinder-crankcase plane
Water pump impeller
Minimum oil pressure sensor
ENG - 161
XEVO 400ie
Engine
Specification
F
G
H
L
M
N
O
Desc./Quantity
Oil filter cartridge
To the oil sump
By-pass valve
Oil pump
Mesh pre-filter
Crankshaft
Connecting rod
General characteristics
The lubrication system is divided into two sections:
- High pressure
- Low pressure
The high pressure section includes all components located on the engine crankcase whereas the low
pressure section only refers to the thermal group.
The trochoidal pump is installed in the sump and is controlled by a pair of gears.
To guarantee the integrity of the pump, a pre-filter is fitted.
This is a screw-in type pre-filter and the relevant plug serves at the same time as an engine oil drain
plug.
The pump is controlled by means of a piston by-pass calibrated to 4 bar. This is located before the
cartridge filter and both are installed on the flywheel cover, so that the seal of the filter is subject to the
pressure of the circuit.
The by-pass located before the cartridge filter improves the operating conditions for the filter, particularly
with cold oil.
The filter is equipped with an anti-drain back valve and a pressure-relief valve; the latter intervenes
when the filtering mass causes a pressure drop above 1 ± 0.2 bar.
These conditions naturally occur only with cold oil and at high engine revs or if the filter is clogged.
The filtered oil is used to lubricate the water pump shaft and once at the engine crankcase, to lubricate
the main bearings, the connecting rod head and the piston cooling nozzle, on the transmission-side
bearing.
The main bearing on the transmission side is fitted with an oil seal and the respective drain line.
The supply line for the timing system comes from the flywheel-side bearing; the supply to the head is
controlled by the respective spray jets in the engine crankcase.
The components of the timing system function with low-pressure oil lubrication.
The camshaft bearings are installed directly on the aluminium of the head; the camshaft axial clearance
is partially compensated by the oil supplied to the smaller diameter bearing.
The camshaft supplies the lubricant to the rocking levers via the holes provided; these are installed in
a position to ensure that the lubrication is maintained even after the scooter has stopped. This is achieved when the camshaft reaches its most usual and likely position when the engine is shut off.
The oil used to lubricate the head returns to the sump via the chain casing channel and therefore it also
provides lubrication for the chain.
ENG - 162
XEVO 400ie
Engine
A one-way valve and a decantation chamber are used so that gases from the crankcase do not carry
any oil. The one-way valve is a metal reed valve; the decantation chamber has a drainage hole. A failure
in these components implies oil getting into the line supplying air to the engine.
Excessive oil vapours may result in clogged ducts on the throttle body.
In order to signal low oil pressure in the system, a pressure switch is used, located immediately after
the oil filter outlet.
The lubrication circuit does not include the countershaft. The countershaft is lubricated by the oil transported by the gears or by the centrifugal effect of the crankshaft
The same applies to the piston or the pin, but in this case the cooling nozzle is particularly important.
Diagnosis guide
1 - Minimum oil pressure warning light on with hot engine.
AHEAD - go to 2
2 - Remove the minimum pressure switch electric connector.
Check that the warning light turns off.
YES - go to 3 NO go to 11
3 Check the actual oil pressure.
AHEAD - go to 4
4 - Remove the switch and fit the special tool with the relevant gasket.
Specific tooling
020193Y Oil pressure check gauge
020434Y Oil pressure check fitting
- Remove the dipstick with the oil filling cap and insert a cap fitted with the temperature probe supplied
with the special tool. Insert the probe to feel contact with the crankcase bottom and pull back a few
millimetres.
Specific tooling
020331Y Digital multimeter
AHEAD - go to 5
5 - Measure the pressure with cold and idling engine.
ENG - 163
XEVO 400ie
Engine
STANDARD VALUES
Specification
20°C Temperature
1400 rpm
Desc./Quantity
approx. 4.5 bar
N.B.
RPM CAN BE MEASURED BOTH BY THE EXHAUST GAS ANALYSER AND BY THE DIAGNOSTIC
TESTER
Specific tooling
020680Y Diagnosis Tool
YES go to 6 NO go to 12
6 - Let the engine warm up and repeat the check with hot oil.
STANDARD VALUES
Specification
80°C Temperature
1400 rpm
Desc./Quantity
approx. 1.5 bar
YES go to 7 NO go to 8
7 - Replace the oil minimum pressure switch.
8 - If pressure lower than 1.3 ÷ 1.5 bar is measured.
AHEAD go to 9
9 - Replace the oil filter and repeat the pressure check with oil at 80°C.
YES go to 10 NO go to 13
10 - The failure was fixed.
It is recommended to respect the suggested number of kilometres covered.
11 - Check and restore the electrical system.
12 - If pressure lower than 4 bar is measured.
AHEAD go to 9
13 - Remove the flywheel cover and check the by-pass and the cover sealing gasket efficiency towards
the case internal side, as described in the "Flywheel cover" chapter.
YES go to 14 NO go to 15
14 - Check whether there is an irregular clearance on the crankshaft:
- axial clearance (see the "Crankcase and crankshaft" chapter)
- radial clearance, especially in the direction of the cylinder axis
- clearance according to the direction of rotation with the connecting rod in quadrature
YES go to 16 NO go to 17
15 - Replace the faulty components ("Flywheel cover" chapter).
16 - Overhaul the engine ("Crankcase and crankshaft" chapter).
17 - Open the engine crankcase and remove the oil pump as described in the "Crankcase and crankshaft" chapter.
ENG - 164
XEVO 400ie
Engine
- Check the oil pump as described in the following pages.
- Check that the cooling nozzle and the timing system feeding jet are properly installed.
- Visually inspect the crankshaft couplings and their size ("Crankcase and crankshaft" chapter).
N.B.
POTENTIAL IRREGULARITIES IN COUPLINGS AND THE TIMING SYSTEM COMPONENTS CANNOT BE DETECTED WHEN INSPECTING THE LUBRICATION PRESSURE. THEY MAY BECOME
EVIDENT BY AN INCREASE IN NOISE.
N.B.
IN CASE OF IRREGULAR PRESSURE ON THE CRANKCASE, CARRY OUT A VISUAL AND DIMENSIONAL INSPECTION OF THE TIMING SYSTEM COMPONENTS (SEE "THERMAL GROUP
AND TIMING SYSTEM" CHAPTER).
Oil pressure check
1 - In case of oil leaks from the oil filter or from the flywheel cover coupling gasket, check the lubrication
pressure.
AHEAD go to 2
2 - Install the special tool.
Specific tooling
020193Y Oil pressure check gauge
020434Y Oil pressure check fitting
AHEAD go to 3
3 - Check the system pressure with cold engine and medium - high speed.
Standard pressure < 6 bar
YES go to 4 NO go to 5
4 - Replace the damaged components.
5 - Check the working order of the adjustment by-pass (see "flywheel cover" chapter) and restore proper
sliding.
N.B.
STANDARD PRESSURES ARE OBTAINED USING OIL WITH THE PRESCRIBED VISCOSITY. A
HIGHER VISCOSITY CAUSES AN INCREASE OF THE SYSTEM PRESSURE.
1 - If oil consumption is above 250 g/1000 km on a run-in engine, proceed as follows.
AHEAD go to 2
2 - Check the presence of oil in the scavenge duct on the filter box.
YES go to 3 NO go to 4
3 - Check the one-way reed valve and the decantation chamber drainage hole.
YES go to 5 NO go to 4
4 - Check the thermal group seals (piston rings, valve guides and oil guards), see "Thermal group and
Timing system" chapter.
5 - Restore the valve or the drainage hole efficiency.
ENG - 165
Engine
Oil pump
Removal
- Remove the closing plate of the oil pump housing
by loosening the 2 retaining screws with their
washers.
- Remove the oil pump complete with the gearing
by loosening the 2 retaining screws through the
eyes machined in the gearing proper.
- Remove the gasket.
- Remove the two screws and the oil pump cover.
ENG - 166
XEVO 400ie
XEVO 400ie
Engine
- Remove the inside rotor retaining snap ring turning it to move the opening at the shaft face.
- Remove and wash the rotors thoroughly with petrol and compressed air.
- Extract the shaft with its gear and check that it is
in good working order and free from wear.
- Reassemble the rotors in the pump body, keeping the two reference marks visible
- Insert the shaft with the gear and install the lock
ring; then, turn it with the opening opposed to the
shaft face.
- Check any irregular clearance between shaft and
pump body.
- Using a thickness gauge, check the distance between the rotors in the position shown in the figure.
Characteristic
Admissible limit clearance:
0.012 mm
ENG - 167
Engine
- Check the distance between external rotor and
pump body; see figure.
Characteristic
Admissible limit clearance:
0.25 mm
- Check the rotor axial clearance using a rectified
bar as reference plane, as shown in the figure.
Characteristic
Limit values admitted:
0.1 mm
Refitting
- Make sure the gasket is in the correct position.
N.B.
THE TOOTH OF THE GASKET MUST BE IN ITS SEAT.
- Lubricate the internal rotors.
- Check there are no signs of scoring or wear on
the oil pump cover.
- If non-conforming values or signs of wear are
found, replace the pump.
- Fit the pump cover in the position that permits the
crankcase fixing screws to be aligned.
- Tighten the two fastening screws to the prescribed torque.
Locking torques (N*m)
Oil pump cover screws 0.7 ÷ 0.9
- Insert the oil pump with gear
ENG - 168
XEVO 400ie
XEVO 400ie
Engine
- Insert the 2 retaining screws through the slots on the gear and tighten to the prescribed torque.
N.B.
THE ASSEMBLY POSITION OF THE PUMP IS FIXED BY INSTALLATION OF THE SCREWS.
Failure to observe the tightening torque may alter
the coupling clearance of the rotors with the pump
body.
Locking torques (N*m)
Screws fixing oil pump to the crankcase 5 ÷ 6
- Insert the countershaft with gearing into the flywheel-side half-crankcase.
- Install the special tool in the position shown in the
figure.
Specific tooling
020479Y Countershaft lock wrench
- Keep the countershaft in position and insert the
washer with the nut.
- Tighten the nut to the prescribed torque, using
the recommended product.
- Remove the special tool.
Recommended products
Loctite 243 Medium strength threadlock
Medium Loctite 243 threadlock
Locking torques (N*m)
Countershaft fixing nut 25 ÷ 29
ENG - 169
INDEX OF TOPICS
INJECTION
INJEC
XEVO 400ie
Injection
EMS injection system
This vehicle is fitted with an integrated injection and ignition system.
Injection is indirect in the manifold through an electro-injector.
Injection and ignition are timed on the 4-stroke cycle using a tonne wheel pivoted on the camshaft control
and a reluctance variation sensor.
Combustion and ignition are managed on the basis of engine revs and throttle valve opening. Further
corrections are made according to the following parameters:
- Coolant temperature.
- Intake air temperature
- Ambient pressure
The system implements an idle feeding correction with cold engine through a Stepper motor on a bypass circuit of the throttle valve. The control unit manages the Stepper motor and the injector opening
time, thereby ensuring the idle steadiness and the proper combustion.
In all conditions of use, mixture preparation is managed by modifying the injector opening time.
The fuel supply pressure is kept constant based on the ambient pressure.
The fuel supply circuit consists of:
- Fuel pump
- Fuel filter
- Injector
- Pressure regulator
The pump, the filter and the regulator are placed inside the fuel tank on a single support.
The injector is connected by two pipes provided with quick couplings. This allows obtaining a continuous
circulation, thereby avoiding the risk of fuel boiling. The pressure regulator is situated at the end of the
circuit.
The fuel pump is controlled by the EMS control unit; this ensures the scooter safety
The ignition circuit consists of:
- HV coil
- HV cable
- Shielded cap
- EMS control unit
- Spark plug
The EMS control unit manages the ignition with optimum timing, ensuring the timing on the 4-stroke
cycle (ignition only during compression).
The EMS injection/ignition system manages the engine function according to a pre-set program.
Should any input signals fail, an acceptable working order of the engine is ensured to allow the user to
reach a service station.
Of course, this cannot happen when the rpm-timing signal is missing, or when the failure involves the
control circuits:
INJEC - 171
Injection
- Fuel pump
- HV coil
- Injector
The control unit is provided with a self-diagnosis
system connected to an indicator light in the instrument panel.
Failures are detected and restored by the diagnostic tester.
In any case, when the fault is no longer present,
the data storage is automatically cleared after 16
cycles of use (cold start, running at regular engine
temperature, stop).
The diagnostic tester is also required to adjust the
idle mixture.
Specific tooling
020680Y Diagnosis Tool
The EMS injection-ignition system has a control
function over the rpm indicator and the radiator
cooling electric fan.
The EMS is connected to the anti-theft immobilizer
system decoder.
In turn, the decoder is connected to a flashing diagnostic LED that also serves as deterrent.
The EMS control unit power supply is further controlled by the emergency switch and by the side
stand switch, that is to provide further safety for the
scooter.
INJEC - 172
XEVO 400ie
XEVO 400ie
Injection
Precautions
1. Before fixing any part of the injection system, check to see if there are any registered faults. Do not
disconnect the battery before checking for faults.
2. The fuel supply system is pressurised at 300 kPa (3 BAR). Before disconnecting the quick coupler
of a pipe in the fuel supply system, check that there are no naked flames. Do not smoke. Act with caution
to prevent spraying in the eyes.
3. When fixing electric components, operate with the battery connected only when actually required.
4. When functional checks are performed, check that the battery voltage is over 12V.
5. Before trying to start up, check to make sure there is at least two litres of fuel in the tank. Failure to
respect this norm will damage the fuel pump.
6. If the scooter is expected to remain unused for a long time, refill the tank up to a little over half the
level. This will ensure the pump will be covered by fuel.
7. When washing the vehicle, be careful with the electric components and wiring.
8. When an ignition fault is detected, start the checks from the battery and the injection system connections.
9. Before disconnecting the EMS control unit connector, perform the following operations in the following
order:
- Set the switch to «OFF»
- Disconnect the battery
Failure to respect this norm may damage the control unit.
10. Do not invert the polarity when fitting the battery.
11. In order to prevent damages, disconnect and reconnect the EMS connectors only if actually required.
Before reconnecting, check that the connectors are dry.
12. When carrying out electric inspections, do not force the tester probes into the connectors. Do not
take measurements not specifically foreseen by the manual.
13. At the end of every check performed with the diagnostic tester, protect the system connector with
its cap. Failure to respect this norm may damage the EMS control unit.
14. Before reconnecting the quick couplers of the power supply system, check that the terminals are
perfectly clean.
INJEC - 173
XEVO 400ie
Injection
Terminals setup
Layout of the system-side connectors and the connectors on the electronic control unit.
ECU
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Specification
Throttle potentiometer power supply
Lambda sensor
Rpm indicator
Engine temperature
Electric fan remote control
Stepper motor
Engine rpm sensor
Lambda sensor
EMS diagnostic connector
EMS diagnostic connector
Throttle potentiometer signal
Engine rpm sensor
Injector control
Stepper motor
Injection telltale light
Decoder (serial)
Battery powered
Intake air temperature sensor
Injection load remote control
HV coil
Stepper motor
Sensor ground
Ground lead
Stepper motor
Continuous power supply
1
2
Specification
Immobilizer LED control
Desc./Quantity
+5 V
(-)
(+)
Stepper motor
(+)
(-)
Stepper motor
(-)
(+)
(+)
(-)
(-)
Stepper motor
(-)
Stepper motor
(+)
IMMOBILIZER DECODER
INJEC - 174
Desc./Quantity
(negative)
XEVO 400ie
3
4
5
6
7
8
Injection
Specification
Base power supply
Ground lead
electronic control unit
Continuous power supply (positive)
Desc./Quantity
(positive)
(serial)
EMS circuit diagram
KEY:
2. Engine stop switch
3. Diode
4. Side stand button
5. Key switch
6. Electric fan
7. Engine stop remote control switch
9. Main fuses
11. Auxiliary fuses
12. Stop button on front brake
13. Stop button on rear brake
14.Immobiliser remote control switch
15. 12V-12Ah Battery
16. Starter motor
INJEC - 175
XEVO 400ie
Injection
17. Start-up remote control switch
20. Starter button
32. Rear light
A. Stop light bulbs
43. Injection load remote control
45. Fuel injector
48. Instrument panel
50. HV coil
51. Immobilizer aerial
52. Decoder
53. Injection ECU
54. Intake air temperature sensor
55. Fuel pump
56. Diagnosis connector
57. Electric fan remote control
58. Engine rpm sensor
59. Stepper motor
60. Engine temperature sensor
61. Throttle valve potentiometer
62. Lambda probe
Troubleshooting procedure
This section makes it possible to find what solutions to apply when troubleshooting.
Engine does not start
ENGINE DOES NOT START IF ONLY PULLED
Possible Cause
Immobiliser enabling signal
Presence of faults detected by the self diagnosis
Fuel supply
Power to the spark plug
Parameter reliability
End of compression pressure
INJEC - 176
Operation
System not encoded
System not efficient, repair according to the indications of the
self-diagnosis
Injection load relay
HV coil
Injector
Revolution timing sensor
Fuel in the tank
Fuel pump activation
Fuel pressure (low)
Injector capacity (low)
Shielded cap resistance check
HV coil resistance check
Coolant temperature
Distribution timing - injection ignition
Intake air temperature
End of compression pressure
XEVO 400ie
Injection
Starting difficulties
ENGINE START-UP PROBLEMS
Possible Cause
Presence of faults detected by the self diagnosis
Start-up speed
End of compression pressure
Power to the spark plug
Fuel supply
Correctness of the parameters
Operation
Injection load relay
HV coil
Injector
revolution timing sensor
Air temperature
Coolant temperature
Atmospheric pressure
Starter motor and remote control
Battery
Ground connections
End of compression pressure
Spark plug
Shielded cap
HV coil
Rpm-timing sensor
Ignition advance
Fuel pressure (low)
Injector capacity (low)
Injector sealing (poor)
Coolant temperature
Stepper throttle valve position intake air temperature (steps
and actual opening)
Cleaning of the auxiliary air pipe and throttle valve; air filter efficiency
Engine stops at idle
ENGINE DOES NOT IDLE/ IDLING IS UNSTABLE/ IDLING TOO LOW
Possible Cause
Presence of faults detected by the self diagnosis
Ignition efficiency
Correctness of the parameters
Intake system cleaning
Intake system sealing (infiltrations)
Fuel feed (low pressure)
Operation
Injection load relay
HV coil
Injector
revolution timing sensor
Air temperature
Coolant temperature
Atmospheric pressure
Spark plug
Ignition timing
Throttle valve position sensor
Stepper
Coolant temperature sensor
Intake air temperature sensor
Air filter
Diffuser and throttle valve
Additional air pipe and Stepper
Intake manifold - head
Throttle body - manifold
Intake sleeve
Filter box
Fuel pump
Pressure regulator
Fuel filter
Injector capacity
INJEC - 177
XEVO 400ie
Injection
Engine does not rev down
ENGINE DOES NOT RETURN TO THE IDLING SPEED/IDLING SPEED TOO HIGH
Possible Cause
Presence of faults detected by the self diagnosis
Ignition efficiency
Correctness of the parameters
Intake system sealing (infiltrations)
Fuel feed (low pressure)
Operation
Injection load relay
HV coil
Injector
revolution timing sensor
Air temperature
Coolant temperature
Atmospheric pressure
Ignition timing
Throttle valve position sensor
Stepper
Coolant temperature sensor
Intake air temperature sensor
Intake manifold - head
Throttle body - manifold
Intake sleeve
Filter box
Fuel pump
Pressure regulator
Fuel filter
Injector capacity
Exhaust backfires in deceleration
EXHAUST BACKFIRES WHEN DECELERATING
Possible Cause
Presence of faults detected by the self diagnosis
Correctness of the parameters
Intake system sealing (infiltrations)
Fuel feed (low pressure)
Exhaust system sealing (infiltrations)
Operation
Injection load relay
HV coil
Injector
revolution timing sensor
Air temperature
Coolant temperature
Atmospheric pressure
Throttle valve position sensor
Stepper
Coolant temperature sensor
Intake air temperature sensor
Intake manifold - head
Throttle body - manifold
Intake sleeve
Filter box
Fuel pump
Pressure regulator
Fuel filter
Injector capacity
Manifold - head
Manifold - muffler
Analyser socket
Muffler welding
Engine revs irregularly
ENGINE IRREGULAR PERFORMANCE WITH VALVE SLIGHTLY OPEN
Possible Cause
Presence of faults detected by the self diagnosis
INJEC - 178
Operation
Injection load relay
HV coil
Injector
revolution timing sensor
XEVO 400ie
Injection
Possible Cause
Intake system cleaning
Intake system sealing
Ignition system
Parameter reliability
TPS reset successful
Operation
Air temperature
Coolant temperature
Atmospheric pressure
Air filter
Diffuser and throttle valve
Additional air pipe and Stepper
Intake sleeve
Filter box
Spark plug wear check
Throttle valve position signal
Coolant temperature indicator
Intake air temperature indicator
Ignition advance
TPS reset successful
Poor performance at full throttle
POOR ENGINE PERFORMANCE AT FULL POWER/ ENGINE IRREGULAR PERFORMANCE ON PICKUP
Possible Cause
Presence of faults detected by the self diagnosis
Spark plug power supply
Intake system
Parameter reliability
Fuel supply
Operation
Injection load relay
HV coil
Injector
revolution timing sensor
Air temperature
Coolant temperature
Atmospheric pressure
Spark plug
Shielded cap
HV cable
HV coil
Air filter
Filter box (sealing)
Intake sleeve (sealing)
Throttle valve position signal
Coolant temperature indicator
Intake air temperature indicator
Ignition advance
Fuel level in the tank
Fuel pressure
Fuel filter
Injector capacity
Engine knocking
PRESENCE OF KNOCKING (COMBUSTION SHOCKS)
Possible Cause
Presence of faults detected by the self diagnosis
Ignition efficiency
Parameter reliability
Intake system sealing
TPS reset successful
Operation
Injection load relay
HV coil
Injector
revolution timing sensor
Air temperature
Coolant temperature
Atmospheric pressure
Spark plug
Throttle valve position signal
Coolant temperature indicator
Intake air temperature indicator
Ignition advance
Intake sleeve
Filter box
TPS reset successful
INJEC - 179
XEVO 400ie
Injection
Possible Cause
Fuel supply
Selection of the cylinder base gasket thickness
Operation
Fuel pressure
Fuel filter
Injector capacity
Fuel quality
Selection of the cylinder base gasket thickness
Decoder master-box circuit
This section describes the operations to be carried out to check the power supply circuit.
Constant supply circuit check
The decoder basic power supply is necessary for the deterrent flashing management. The injection
control unit power supply is necessary for the Stepper motor management.
A power supply failure disables both ignition and injection.
In case of power supply faults, the diagnostic tester gives the information "NO REPLY FROM THE
CONTROL UNIT".
To carry out the check, proceed as follows:
Specific tooling
020680Y Diagnosis Tool
1 - Check whether the immobiliser system LED indicates that the switch is in position "ON" and that
the deterrent flashing is on.
YES go to 2 NO go to 7
2 - The decoder is properly programmed.
YES go to 3
3 - Switch set to "ON" with side stand raised and
emergency switch set to "OFF". The injection telltale light turns on for about 3 seconds.
YES go to 5 NO go to 4
4 - Check the instrument unit and its power supply.
YES go to 3
5 - Set the emergency switch to "RUN". The injection telltale light comes on for about 5 seconds.
YES go to 6 NO go to 7
6 - The injection control unit is certainly powered.
7 - Check that fuses No. 6 and 11 are in good conditions.
YES go to 10 NO go to 8
INJEC - 180
XEVO 400ie
Injection
8 - Fix any wiring short circuits and replace the
fuse.
YES go to 1 NO go to 9
9 - Check any short circuit on decoder or control
unit and replace, if necessary.
YES go to 1
10 - Place the special tool between control unit and
power supply system. Disconnect the main decoder connector and check the following conditions:
Terminal no. 3= battery positive
Terminal no. 4= battery negative
YES go to 11 NO go to 13
Specific tooling
020481Y Control unit interface wiring
11 - Decoder with proper base power supply.
Use the special tool to check the control unit power
supply:
Pin 17 = battery positive
Pin 23 = battery negative
YES go to 12 NO go to 13
12 - Control unit with proper base power supply.
13 - If the battery negative is not present, check
continuity between Pin 23 of the special tool and
earth.
Detect the presence of the battery positive on Pin
17 of the special tool and on pin 3 of the decoder
connector.
YES go to 12 NO go to 14
YES go to 11
14 - Fix the cable harness.
Key-switch power supply circuit check
A failure of the constant power supply disables both ignition and injection functions. In case of power
supply faults, the diagnostic tester gives the information "NO REPLY FROM THE CONTROL UNIT".
INJEC - 181
Injection
XEVO 400ie
Specific tooling
020680Y Diagnosis Tool
1 - Check whether the immobilizer system LED indicates switching to "ON"
YES go to 2 NO go to 4
2 - Raise the side stand. Set the emergency switch
to "OFF". Turn the key switch to "ON". Set the
emergency switch to "RUN". Check whether the
injection telltale light turns on for 5 seconds
YES go to 3 NO go to 4
3 - Continuous power supplies are regular
4 - Check that fuse No. 11 and the engine stop remote control switch are in good conditions.
YES go to 5 NO go to 6
5 - Place the special tool between control unit and injection system.
YES go to 7
Specific tooling
020481Y Control unit interface wiring
6 - Fix any short circuits and replace the fuse.
Check decoder and control unit, if necessary
YES go to 1
7 - Disconnect the main decoder connector and
check the following conditions: switch set to "ON",
switch to "RUN" and side stand raised
Terminal no. 8 = battery positive
Terminal no. 4= battery negative
YES go to 8 NO go to 10
8 - Decoder with proper continuous power supply.
Use the special tool to check the control unit continuous power supply. Switch set to "ON", switch
to "RUN" and side stand raised.
Pin 26 = battery positive
Pin 23 = battery negative
YES go to 9 NO go to 10
Specific tooling
020481Y Control unit interface wiring
INJEC - 182
XEVO 400ie
Injection
9 - Control unit with proper continuous power supply.
10 - If only one component is not powered check
the relevant connector. If the problem involves
both the decoder and ECU check the continuity of
the decoder ECU power supply line.
Pin 26 control unit - Pin 30 engine stop remote
control switch = continuity
Pin 8 decoder - Pin 30 engine stop remote control
switch = continuity
YES go to 12 NO go to 11
11 - Fix the cable harness or the connection
YES go to 10
12 - Proper continuous power supply
YES go to 13
13 - Check the connector and the continuity of the key switch set to "ON"
Pin 1 - 2 = continuity
YES go to 14
14 - Check the engine stop remote control switch connector and the switch efficiency.
85 - 86 = approx. 70W
YES go to 15
N.B.
CHECK THE COIL RESISTANCE
15 - Check the signal circuit:
- emergency switch and connector
- side stand switch and connector
YES go to 16
16 - Check the cable harness continuity. Check the utility control main remote control switch.
Disconnect the master remote control switch.
Check the diode installed on the earth connection of the main remote control switch pickup.
86 - earth = continuity with high resistance (connect the tester: positive with 86; negative with earth).
When the polarity is inverted there should be no continuity.
INJEC - 183
Injection
Diagnostic circuit
1 = CONNECTOR FOR DIAGNOSTIC TESTER
2 = INJECTION ECU
Connect the diagnostic tester.
Specific tooling
020680Y Diagnosis Tool
If the diagnostic tester displays «No reply from the
control unit», disconnect the continuous power
supply for 10 seconds and switch to «ON» again;
if the message is still displayed, proceed as follows:
1 - Check the diagnostic tester connections.
YES go to 2 NO go to 3
2 - Check the control unit base and continuous
power supplies.
YES go to 4
3 - Restore
4 - Place the special tool between control unit and
system. Keep the control unit disconnected.
YES go to 5
Specific tooling
020481Y Control unit interface wiring
5 - Check the following conditions:
PIN 1 diagnostic socket - PIN 10 control unit =
continuity
PIN 2 diagnostic socket - PIN 23 control unit =
continuity with earth
PIN 3 diagnostic socket - PIN 9 control unit = continuity
10 - 23 = insulation (>1 MΩ)
9 - 23 = insulation (>1 MΩ)
YES go to 6 NO go to 7
INJEC - 184
XEVO 400ie
XEVO 400ie
Injection
6 - The circuit is in good working order. Check the control unit.
7 - Fix the interruption or short-circuit.
Injection warning light circuit
KEY:
2. Engine stop switch
3. Diode
4. Side stand button
5. Key switch
7. Engine stop remote control switch
9. Main fuses
11. Auxiliary fuses
INJEC - 185
XEVO 400ie
Injection
15. 12V-12Ah Battery
48. Instrument panel
51. Immobilizer aerial
52. Decoder
53. Injection ECU
REFERENCE VALUES
1
Specification
TERMINAL: 15 - 23
2
TERMINAL: 15 - 23
Desc./Quantity
CONDITIONS: DURING THE CHECK
- Switch set to "ON"
- Side stand raised
- Switch to "RUN"
STANDARD VALUES : O V
CONDITIONS: AFTER THE CHECK
- Switch set to "ON"
- Side stand raised
- Switch to "RUN"
STANDARD VALUES : Battery voltage
The injection telltale light is controlled upon every switching to "ON" by the 3-second timing generated
by the digital instrument. This step is normally interrupted by the injection control unit control. The timing
lasts 5 seconds.
The diagnostic tester is not programmed to check this circuit.
Proceed as follows:
Specific tooling
020680Y Diagnosis Tool
1 - Turn the switch to the "ON" position Turn the emergency switch to position "RUN". Keep the side
stand raised. Make sure the light goes on for 5 seconds.
YES go to 2 NO go to 3
2 - The system is working.
3 - Put the special tool between the control unit and system.
YES go to 4
Specific tooling
020481Y Control unit interface wiring
4 - Switch in «ON» position Emergency switch on
«RUN».
Side stand up Wait more than 5 seconds.
15 - 23 = battery voltage
YES go to 5 NO go to 6
INJEC - 186
XEVO 400ie
Injection
5 - Check the control unit connector. Check the
control unit.
6 - Check the continuity between pin 15 of the
control unit and pin 16 of connector B of the instrument panel.
The injection ECU manages the negative of the light. The light must go off after the initial check. The
light goes on again when the ECU self-diagnosis detects a fault. When the fault disappears the light
goes back off, however, the related operating tests need to be carried out. The light can go on whether
the engine is able to run or not.
Self-diagnosis system
The injection control unit is provided with an auto-diagnosis function.
When a failure is detected, the control unit:
- turns on the injection telltale light (only when it is current).
- enables the engine management check according to the data entered in the control unit (where possible).
- stores the failure (always).
In the event of intermittent failures, the indicator follows the failure trend and storage remains active.
Stored data are automatically deleted when the failure does not occur for over 16 usage cycles of the
scooter (heating - use - cooling). The battery disconnection does not delete stored data.
Checking stored failures
Connect the diagnostic tester to the scooter system.
Select the function "ERROR" in the menu.
Specific tooling
020680Y Diagnosis Tool
INJEC - 187
Injection
XEVO 400ie
The tester pages display the list of errors detectable by the auto-diagnosis.
Errors detected by the auto-diagnosis are marked
by one or two reference dots.
They are arranged on two lines:
Line A = current failures (present)
Line M = stored failures
Errors detectable by the auto-diagnosis may refer to the following system circuits or sectors of the
control unit:
- Throttle valve position signal
- ambient pressure signal
- coolant temperature signal
- intake air temperature signal
- wrong battery voltage
- Injector and relevant circuit
- HV coil and relevant circuit
- Stepper and relevant circuit
- Pump relay circuit
- Electric fan relay circuit
- RAM memory
- ROM memory
- EEPROM
- Microprocessor
- Signals panel (stroke - revolution signal - unsteady cycle)
Underlined failures cause the engine to stop.
In the other cases, the engine works managed by the basic data.
Deleting stored failures
After mounting any failures, connect the diagnostic
tester.
Select the menu on the "errors deleting" function.
Press "OK" and follow the instructions. Perform a
trial cycle and check whether the failure occurs
again.
Specific tooling
020680Y Diagnosis Tool
For troubleshooting for any faults see the related chapter sections.
INJEC - 188
XEVO 400ie
Injection
Fuel supply system
Fuel is fed to the injector by a pump, a filter and a
pressure regulator integrated with the fuel level indicator inside the tank.
The pump unit is connected to the injector by:
2 semi-flexible pipes
4 quick unions
1 T union with O-ring and retain bracket for the injector
The pipes are crossed and fixed to the intake manifold to prevent wear of the quick unions connected
to the T union for the injector.
N.B.
BEFORE WORKING ON THE FUEL SUPPLY SYSTEM, CAREFULLY CLEAN THE PARTS TO
PREVENT DAMAGING THE FAST-RELEASE COUPLING SEAL OR TO PREVENT DIRT GETTING
INTO THE DUCTS.
CAUTION
THE SYSTEM IS UNDER PRESSURE.
DO NOT SMOKE DURING ANY OPERATION.
PREVENT ANY FUEL SPRAYING.
WARNING
- BEFORE STARTING THE ENGINE, CHECK WHETHER THERE IS FUEL IN THE TANK.
- DO NOT USE THE SCOOTER IN RESERVE FOR A LONG TIME, UP TO THE POSSIBILITY OF
RUNNING OUT OF FUEL.
- IF THE SCOOTER IS EXPECTED TO REMAIN UNUSED FOR A LONG TIME, REFILL THE TANK
AT LEAST TO HALF THE LEVEL.
FAILURE TO OBSERVE THESE RULES CAN DAMAGE THE PUMP.
INJEC - 189
Injection
Circuit diagram
KEY:
2. Engine stop switch
3. Diode
4. Side stand button
5. Key switch
6. Electric fan
7. Engine stop remote control switch
9. Main fuses
11. Auxiliary fuses
12. Stop button on front brake
13. Stop button on rear brake
14.Immobiliser remote control switch
15. 12V-12Ah Battery
16. Starter motor
17. Start-up remote control switch
20. Starter button
32. Rear light
A. Stop light bulbs
INJEC - 190
XEVO 400ie
XEVO 400ie
Injection
43. Injection load remote control
45. Fuel injector
48. Instrument panel
50. HV coil
51. Immobilizer aerial
52. Decoder
53. Injection ECU
54. Intake air temperature sensor
55. Fuel pump
56. Diagnosis connector
57. Electric fan remote control
58. Engine rpm sensor
59. Stepper motor
60. Engine temperature sensor
61. Throttle valve potentiometer
62. Lambda probe
Removing the injector
N.B.
ONLY REMOVE THE INJECTOR FROM THE MANIFOLD IN THE EVENT OF A PROVEN DEFECT.
OPERATING TEST OF THE INJECTOR MUST BE PERFORMED WITH THE INJECTOR INSTALLED
ON THE MANIFOLD (SEE "INJECTION").
- To remove the injector, remove the central set
screw of the "T" shunt acting as a support for the
injector.
- Remove the injector from the manifold.
INJEC - 191
Injection
XEVO 400ie
Refitting the injector
Carefully check to make sure the components are
clean.
- Fit new O-rings and grease them.
- Apply the recommended product to the set
screws and tighten to the prescribed torque.
Recommended products
Loctite 243 Medium strength threadlock
Medium Loctite 243 threadlock
Locking torques (N*m)
injector fixing screw 3 ÷ 4
Removing the butterfly valve
N.B.
THE THROTTLE BODY IS A PART WHICH INCLUDES VARIOUS COMPONENTS AND IS USUALLY SUPPLIED COMPLETE. TO TEST THESE COMPONENTS SEE THE "INJECTION" CHAPTER.
- Remove the 3 retaining screws indicated in the
figure.
CAUTION
THE THROTTLE BODY COMES PRE-CALIBRATED. TAMPERING WITH THE THROTTLE STOP
REGISTER IS TO BE ABSOLUTELY AVOIDED. THIS REGISTER HAS BEEN SEALED FOR THIS
PURPOSE. FOR PROBLEMS WITH IDLING SEE THE "INJECTION" CHAPTER.
N.B.
REMOVAL OF THE THROTTLE BODY CAN BE EFFECTED WITH THE MANIFOLD ON OR OFF
THE ENGINE.
INJEC - 192
XEVO 400ie
Injection
- Make sure the seal rims on the coupling surfaces
between the manifold-throttle body and manifoldhead are in good condition.
CAUTION
IF AIR GETS IN IT CAN JEOPARDISE THE OPERATION OF
THE INJECTION SYSTEM, ESPECIALLY WHEN THE ENGINE IS IDLING.
- Make sure the throttle valve and related conduit
are clean.
- Make sure the supplementary air channel managed by the Stepper motor is clean.
N.B.
IF THE THROTTLE BODY IS REPLACED RESET THE TPS.
Throttle body
after checking the material under warranty, several throttle bodies are replaced incorrectly because the
valve was dirty. Dirt deposited in the valve, mainly on the inlet manifold side, can be easily removed.
Once clean, the throttle body has and air flow equivalent to the original one. The throttle valve gets dirty
at variable periods according to the type of use given to the scooter, ambient conditions and the idle
speed set-up. The beginning of this problem can be easily detected because the idle speed gradually
decreases. An accurate diagnosis can be performed with the appropriate tools. The parameter situation,
with engine temperature at 90° minimum, can be the following:
Standard
Throttle body dirty
1500±5
< 1400
Ignition advance
5°÷7°
10°
Throttle valve opening
5.24°
5.24°
Engine revs
The "rpm sensor" warning can be displayed on the error menu, in a stored status. This occurs only if
the engine stops several times with the key switch turned to «ON».
Specific tooling
020680Y Diagnosis Tool
INJEC - 193
Injection
XEVO 400ie
Refitting the butterfly valve
- Carry out the removal operations but in reverse
order, tighten the 3 fixing screws to the prescribed
torque.
Locking torques (N*m)
Throttle body fixing screws 11 ÷ 13
Pump supply circuit
The control unit starts the pump in the following conditions:
- by setting the switch to «ON» with the emergency switch to «RUN» and side stand raised. The pump
does not supply.
- If the rpm-timing signal is received. Continuous supply.
The initial timing is useful to bleed the system especially after a stop with engine in temperature. In
these conditions, the fuel altered by boiling will be mixed with that in the tank.
During use, the pump operation will be subject to the engine speed.
Circuit check
The injection system control unit is programmed to guarantee optimum carburetion during riding.
Idle mixture needs to be improved in order to compensate for productive tolerances and engine adjustments.
This adjustment is performed by modifying the injector opening time with the engine at idle speed.
To adjust, proceed as follows:
Idle mixture adjustment must be performed on an engine with good tune-in conditions.
First check:
- spark plug
- air filter cleaning
- throttle body cleaning
- suction system proper sealing
- exhaust system proper sealing
- valve clearance
- fuel filter
- fuel pressure
N.B.
IDLE SPEED IS OBTAINED BY PRE-CALIBRATING THE THROTTLE BODY AND THE ACTIVITY
OF THE STEPPER.
INJEC - 194
XEVO 400ie
Injection
Characteristic
Engine idle speed
1500 ± 50 rpm
Circuit leak test
Before performing the checks concerning the system pressure, it is necessary to carefully clean all
feeding system components.
To perform the inspections it is necessary to use
the special tooling kit for fuel pressure check.
Specific tooling
020480Y Petrol pressure check set
Before disconnecting any fastener, reduce the system pressure.
Detach the electrical connector from the pump support with the engine running, and wait for the shutdown.
The engine stops at approximately 1.5 bar.
CAUTION
CAREFULLY DETACH THE HOSE TERMINAL PREVENT ANY POSSIBLE SPRAYING INTO THE
EYES.
The special tool is equipped with fast-release fittings, similar to those provided for the circuit.
In order to disconnect the female terminals (injector side), it is necessary to press the two extensions and draw them.
CAUTION
DO NOT FORCE THE TERMINAL IF THIS DOES NOT COME
LOOSE; EVENTUALLY, TRY TWISTING IT. THE TERMINAL
IS DESIGNED SO THAT AN INCREASE IN TENSION INCREASES THE LOCKING FORCE.
To detach male type terminals (pump side) it is
necessary to press the coaxial rings towards the
pump, and extract the terminals.
CAUTION
DO NOT FORCE THE TERMINAL IF THIS DOES NOT COME
LOOSE; EVENTUALLY, TRY TWISTING IT. THE TERMINAL
IS DESIGNED SO THAT AN INCREASE IN TENSION INCREASES THE LOCKING FORCE.
INJEC - 195
Injection
The system pressure check must be carried out,
for practical reasons, by connecting on the pump
side.
Connect the manometer to the outlet duct (RHS)
and the extension tube to the inlet duct (LHS).
CAUTION
BEFORE REASSEMBLING CHECK THE TOOL DUCTS ARE
CLEAN.
Pressure regulator check
1 - Connect the diagnostic tester.
Specific tooling
020680Y Diagnosis Tool
Select the menu on the "ACTIVE DIAGNOSIS"
function.
Select the "PUMP DIAGNOSIS" function.
YES go to 2
2 - Enable the function with continuous power supply on and engine off.
The control unit starts the pump for 30 seconds
YES go to 3
3 - Let the system bleed for a few seconds.
Make sure that there are no external leaks.
Check the regulation pressure with pump power
supply voltage higher than 12 V.
Regulation pressure = 300 - 320 kPa (3 - 3.2 BAR)
YES go to 4 NO go to 5
INJEC - 196
XEVO 400ie
XEVO 400ie
Injection
4 - The pressure regulator is efficient.
5 - Pressure too high
Check that the return duct is not clogged or
squashed
YES go to 6 NO go to 7
6 - Replace the pressure regulator.
7 - Pressure regulation too low
Start the pump rotation again. Using pliers with flat
and long tips, temporarily clamp the return duct by
the extension of the specific tool (the serial pipe
does not allow this operation).
fuel pressure = over 300 kPa (3 BAR)
YES go to 8 NO go to 9
8 - Replace the pressure regulator.
9 - Replace the fuel pump.
Fuel pump and filter check
This procedure is useful during maintenance to check the filter efficiency in delivery.
Connect the diagnostic tester.
Connect the fuel pressure check kit.
Specific tooling
020680Y Diagnosis Tool
020480Y Petrol pressure check set
1 - Select the diagnostic tester menu on the «ACTIVE DIAGNOSIS» function.
Select the «PUMP DIAGNOSIS» function.
The pump starts for 30 seconds.
YES go to 2
INJEC - 197
Injection
2 - Let bleed for a few seconds.
Make sure that there are no leaks.
Using pliers with flat and long tips, temporarily
clamp the return duct by the extension of the special tool with pump power supply voltage higher
than 12 V, check the system maximum pressure.
Maximum pressure = > 600 kPa (6 BAR)
YES go to 3 NO go to 4
Specific tooling
020480Y Petrol pressure check set
3 - Check the system seal.
Start the pump for 30 seconds using the diagnostic tester.
When the pump stops, wait 3 minutes.
Check the system pressure.
Fuel pressure = over 200 kPa (2 BAR)
YES go to 5 NO go to 6
Specific tooling
020680Y Diagnosis Tool
4 - If pressure is lower, carefully check the voltage
with pump under stress.
If voltage is higher than 12 V, replace the pump.
5 - The system seal is efficient.
Check the free flow rate.
AHEAD go to 16
6 - Repeat the test. When the pump stops, use pliers with flat and long tips to temporarily clamp the
return duct by the extension of the special tool.
This causes an increase of the fuel pressure.
AHEAD go to 7
7 - Check whether the pressure decreases with the
same trend as the system when free from bottlenecks
AHEAD go to 8
8 - Pressure decreases much more slowly
YES go to 9 NO go to 10
9 - Replace the pressure regulator. Check the system seal again.
INJEC - 198
XEVO 400ie
XEVO 400ie
Injection
10 - There occur trend variations
YES go to 11 NO go to 13
11 - Repeat the test clamping the pipe of the special tool in the portion between the branch and the
injector.
Check whether the pressure decreases with the
same trend as the system when free. Pressure
decreases much more slowly
YES go to 12 NO go to 13
Specific tooling
020480Y Petrol pressure check set
12 - Check and replace the injector, if required,
due to an insufficient seal.
(see "THERMAL GROUP AND TIMING SYSTEM
")
13 - There are no trend variations
Repeat the test clamping the pipe of the special
tool in the portion between the branch and the
pump. Check whether pressure decreases much
more slowly.
YES go to 14 NO go to 15
Specific tooling
020480Y Petrol pressure check set
14 - The pump unidirectional valve is faulty. Replace the pump. (see Pump bracket overhaul)
15 - Check the pipe and the injector union seals more carefully.
Check the component seals again, if necessary.
A POOR SYSTEM SEAL ONLY AFFECTS THE START-UP VELOCITY.
16 - Disconnect the pump connector, start the engine, wait until it stops and connect the connector
again.
Disconnect the fuel return pipe from the pump support (left pipe).
AHEAD go to 17
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17 - Introduce the return pipe into a graduated
container.
Using the diagnostic tester, start the fuel pump for
10 seconds.
Make sure that the power supply voltage is more
than 12V.
Measure the amount of fuel delivered.
Pump free flow rate = 300 - 320 cc.
YES go to 18 NO go to 19
Specific tooling
020680Y Diagnosis Tool
18 - The fuel filter is not clogged.
The scooter can be used respecting the limit of 48000 km.
19 - The flow rate is less than 250 cc.
The fuel filter is dirty. Replace the pump support.
Pump electrics check
This section describes the operations to be carried out to perform electric checks on the pump.
Resistor check
Disconnect the connector from the pump support.
Using a tester, measure the pump winding resistance.
Connect the tester probes to the pump support
pins as shown in the figure.
Electric characteristic
Resistance:
approx. 1.5 Ω
In case of infinite resistance, replace the pump.
With infinite resistance, the pump does not rotate.
With a resistance close to 0 Ω, the pump power consumption is too high with the possibility of blowing
fuse No. 4. Perform the following check.
INJEC - 200
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Pump consumption check
The pump power consumption may vary according
to:
- Power supply voltage
- Pump running-in
- Regulation pressure
- Delivery filter cleaning
To check current consumption, proceed as follows
- disconnect the injection load remote control connector.
- with the key switch turned to «OFF», jump pins
30 and 87.
- check the rotation and power consumption of the pump with the multimeter probes in ammeter function
(see figure).
N.B.
THIS CONSUMPTION REFERS TO:
- POWER SUPPLY VOLTAGE = approx. 12 V
- PUMP RUN IN
- SYSTEM PRESSURE = 300 kPa (3 BAR)
- FUEL FILTER CLEAN
Electric characteristic
Current consumption:
approx. 3.5 - 4.2 A
A dirty filter causes an increase of input. If the pressure-relief valve opens, the pump absorbs approx.
6-7A.
In case of excessive input (5A), replace the filter. See pump support overhaul.
If the fault continues, replace the pump.
Fuel filter check
To check the fuel filter inspect the following:
- Free flow
- Current consumed by the pump. A clogged filter causes:
- Poor performance especially at full power
- Pump input increase
N.B.
DO NOT BLOW THE FILTER WITH COMPRESSED AIR. A DAMAGED FILTER MAY CAUSE THE
INJECTOR CLOGGING.
INJEC - 201
Injection
Pump bracket overhaul
To remove the pump support from the tank, proceed as follows:
- Disconnect the electric connector.
- Start the engine and wait for the spontaneous
stop.
- Clean the tank and the pump support (wash and
blow with compressed air, if necessary).
- Disconnect the delivery and return pipes by the
fast-release fittings.
CAUTION
PREVENT ANY FUEL SPRAYING.
- Loosen the pump support mounting ring nut (RH
threading).
- Remove the pump support and the sealing gasket.
N.B.
UPON EXTRACTING IT, BE CAREFUL NOT TO DEFORM
THE FLOATING ARM.
To replace the components, proceed as follows:
(1) Level indicator:
- Note the assembly position and the path of the
two connecting wires.
pos 2 = wire connected to the circuit
pos 3 = wire connected to the movable arm
INJEC - 202
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Pass the wires through the hole found between filter and pressure regulator.
- Disconnect and extract the wires
- Using a screwdriver on the retain tab as shown
in the figure, extract the level indicator from the
support
- Level indicator check
The check may also be carried out before removing it from the support.
Measure the resistance between the two level indicator wires.
Moving the float arm, check that the resistance is subject to gradual variations according to the arm
motion.
LIMIT VALUES
1
2
Specification
Empty tank position:
Full tank position:
Desc./Quantity
95 - 105 Ω
0-9Ω
- To refit, repeat the removal operations but in reverse order.
(2) Pressure regulator:
- Remove the locking spring
- Extract the pressure regulator with sealing rings.
N.B.
TO OVERCOME THE RESISTANCE OF THE O-RINGS, LEVER WITH A SCREWDRIVER THROUGH
THE OPENINGS OBTAINED ON THE STOP INSERTION SIDE.
INJEC - 203
Injection
- Lubricate the O-rings and repeat the operations
in the reverse order for reassembly.
(3) Fuel pump
- Note the position of the power supply wires on the support
pos 1 = positive (red)
pos 4 = negative (black)
- Disconnect the power supply cables
- Cut the delivery pipe fastening clamp on the support.
- Remove the pump mounting washer
INJEC - 204
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- Remove the filter coupling pipe
- Remove the pump with annular support and prefilter.
- If the pump requires replacement, remove the
pre-filter and the annular support.
- For reassembly, perform the removal operations
but in the reverse order using a new clamp for the
delivery pipe and a new pump mounting washer.
N.B.
TO CLEAN THE PRE-FILTER, USE PETROL AND COMPRESSED AIR.
Orientate the pump properly.
(4) Fuel filter
The fuel filter is supplied already assembled to the
pump support.
To replace the support, move the level indicator,
the pressure regulator and the pump from the old
to the new support.
For these operations, follows the instructions given above.
INJEC - 205
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Pump bracket installation
- Before reassembling, carefully check that the
tank is clean.
In case of dirt or water, remove the tank.
- Install the sealing gasket on the pump support.
- Introduce the pump into the tank being careful not
to deform the level indicator arm.
- Place the sealing gasket on the tank.
- Install the pump support onto the seat aligning
the connector with the scooter longitudinal axle.
N.B.
AN INCORRECT ORIENTATION MAY IMPAIR THE LEVEL
INDICATOR PERFORMANCE.
- Screw the mounting ring nut and tighten thoroughly.
Locking torques (N*m)
Electric pump locking ring nut 20
- Connect the feeding circuit pipes again and check the proper introduction by pulling and turning upwards.
- Reconnect the electric connector.
- Recharge the system with at least 4÷5 timings (key switch «OFF-ON»)
N.B.
DO NOT START THE PUMP BEFORE REFILLING THE TANK. FAILURE TO OBSERVE THIS RULE
CAN DAMAGE THE PUMP.
- Check that the fuel feeding system fast-release fitting seal is efficient.
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Inspecting the injector circuit
KEY:
2. Engine stop switch
3. Diode
4. Side stand button
5. Key switch
6. Electric fan
7. Engine stop remote control switch
9. Main fuses
11. Auxiliary fuses
12. Stop button on front brake
13. Stop button on rear brake
14.Immobiliser remote control switch
15. 12V-12Ah Battery
16. Starter motor
17. Start-up remote control switch
20. Starter button
32. Rear light
A. Stop light bulbs
INJEC - 207
Injection
43. Injection load remote control
45. Fuel injector
48. Instrument panel
50. HV coil
51. Immobilizer aerial
52. Decoder
53. Injection ECU
54. Intake air temperature sensor
55. Fuel pump
56. Diagnosis connector
57. Electric fan remote control
58. Engine rpm sensor
59. Stepper motor
60. Engine temperature sensor
61. Throttle valve potentiometer
62. Lambda probe
2 - Enable the function with continuous power supply on and engine off. The control unit controls the
fuel pump continuously and at the same time starts
the injector opening. The injector openings are repeated for a few seconds.
YES go to 3
3 - Acoustically check the injector openings and
wait for the tester results
YES go to 4 NO go to 5
4 - 5 injector openings detected. The injection tester displays «test successful».
YES go to 7
5 - No injector openings detected. The injection
tester displays «test failed».
YES go to 9 NO go to 6
6 - No injector openings detected. The injection
tester displays «test successful».
YES go to 8
7 - The injector control circuit is efficient. Perform
the injector hydraulic check.
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8 - The injector control circuit is efficient. Repeat
the acoustic check and perform the injector hydraulic check for safety reasons.
9 - Select the menu on the "ERRORS" function.
Check whether the injector failure message only is
displayed.
YES go to 14 NO go to 10
10 - There are also fault messages for: pump relay
YES go to 13 NO go to 11
11 - There is also a fault message for the HV coil.
YES point 12
12 - Check the power supply circuit with the fuse No. 4 and the remote control switch. Common feeding
to the fuel pump.
13 - Check the injection load relay control circuit
14 - Install the special tool between the injection system and the control unit.
YES go to 15
Specific tooling
020481Y Control unit interface wiring
15 - Arrange a multimeter with positive prod on pin
13 and negative prod on pin 23. Set the switch to
"ON" with switch to "RUN" and side stand raised.
Check the presence of battery voltage during the
fuel pump timing.
13 - 23 = battery voltage for 2 seconds.
YES go to 16 NO go to 17
INJEC - 209
Injection
16 - The injector electric circuit is steady Repeat
the checks. If the fault persists, check the control
unit connector. If necessary, replace the electronic
control unit.
17 - Repeat the test using the resistance multimeter. Check the resistance between pin 13 and pin
87 (black/green cable) of the injection load remote
control.
13 - black/green = 14.5Ω ± 5% (resistance of the
injector)
YES go to 19 NO go to 18
18 - No continuity. Disconnect the connector and
repeat the resistive check directly at the injector
terminals.
Resistance = 14.5 Ω ± 2%
YES go to 21 NO go to 22
19 - Check the earth insulation of the injector negative line. Disconnected control unit and injector
connectors.
13 - 23 = Ω infinite
NO go to 20
20 - Repair or replace the cable harness.
21 - Check the continuity between the injector
power supply connector (red - yellow) and pin 13.
Restore the continuity, if required, or replace the
wiring.
22 - Replace the injector.
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Inspecting the injector hydraulics
To check the injector it is advisable to remove the
intake manifold along with throttle body and injector.
The injector should be removed from the manifold
only if necessary.
For these operations, see the "thermal group and
timing system" chapter
1 - Connect the diagnostic tester. Use the socket
in the under-saddle compartment.
Install the fuel pressure check kit special tool.
In this case, the injector can be connected directly
to the tool quick couplings.
AHEAD go to 2
Specific tooling
020680Y Diagnosis Tool
020480Y Petrol pressure check set
2 - Prepare a graduated container with minimum
capacity of 100 cm3 and a resolution of 10-20 cm3
Connect the injector to the wire supplied with the
injection tester. The wire is provided with alligator
clips for direct connection to the battery.
Prepare an auxiliary battery.
Set the switch to "ON" with switch to "RUN" and
stand raised.
Select the "active diagnosis" function.
Start the pump diagnosis.
During the first 30 seconds of pump diagnosis,
power the injector by the wire and the auxiliary
battery for 15 seconds.
Collect the fuel delivered by the injector into the
graduated container.
Power supply pressure = 300 kPa (3 BAR)
Quantity delivered = approx. 40 cm3
YES go to 3 NO go to 4
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3 - Perform the injector sealing test.
Dry the injector outlet with a blast of compressed
air. Activate the fuel pump. Wait for one minute,
making sure there are no leaks coming from the
injector. Slight oozing is normal.
Value limit = 1 drop per minute
YES go to 5 NO go to 6
4 - Higher quantities are not expected.
For lower quantities, replace the injector (THERMAL GROUP AND TIMING SYSTEM).
5 - The injector is conforming.
6 - Repeat the test. If the fault continues, replace
the injector (THERMAL GROUP AND TIMING
SYSTEM)
The injector atomisation cannot be checked by
simple methods. The injector is provided with 5
holes whose angulation forms a jet with a taper of
about 80°. The jet thus formed impinges both intake valves.
N.B.
- AN INJECTOR WITH LOW FLOW RATE AFFECTS THE
MAXIMUM PERFORMANCE.
- AN INJECTOR WITH POOR SEAL AFFECTS IDLING AND
THE START-UP FEATURES AFTER A SHORT STOP WITH
HOT ENGINE.
- IN CASE OF CLOGGING OF THE INJECTOR, IT IS NECESSARY TO REPLACE IT, ALONG WITH THE FUEL FILTER
CONTAINED IN THE TANK. CAREFULLY CLEAN THE SYSTEM AND THE TANK.
Troubleshooting
1 - A failure of the EMS system is more likely to be due to the connections than to the components.
Before searching the EMS system for failures, perform the following checks:
SUGGESTION FOR TROUBLESHOOTING
1
Specification
Electrical power supply
2
Fuel supply
3
Ignition system
4
Intake circuit
INJEC - 212
Desc./Quantity
- Battery voltage
- Burnt fuse
- Remote control switches
- Connectors
- Faulty fuel pump
- Dirty fuel filter
- Faulty spark plug
- Faulty coil
- Faulty screened cap
- Dirty air filter
XEVO 400ie
Injection
Specification
5
Other
Desc./Quantity
- Dirty by-pass circuit
- Faulty Stepper motor
- Wrong distribution timing
- Wrong idle speed carburetion
- Wrong reset of the throttle valve position sensor
2 - Failures to the EMS system may depend on loosened connectors. Make sure that all connections
are properly implemented.
Check the connectors being careful of the following: check that terminals are not bent and that connectors have been connected up properly.
Check whether the failure changes if the connector is slightly vibrating.
3 - Before replacing the EMS control unit, check the whole system carefully.
If the fault is fixed by replacing the EMS control unit, install the original control unit again and check
whether the fault occurs again.
4 - For troubleshooting, use a multimeter with an internal resistance of more than 10KΩ/V.
Improper instruments may damage the EMS control unit.
The instruments to be preferred have a definition of more than 0.1V and 0.5Ω and an accuracy of more
than ± 2%.
Immobiliser circuit
The EMS system is integrated with the immobiliser
anti-theft device.
Its functions are:
- Start-up enabled by key recognition.
- Deterrent flashing.
System components
The system consists of:
-EMS system control unit
- Decoder
- Aerial
- master key (brown)
- service key (black)
- Deterrent and diagnosis LED
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XEVO 400ie
Virgin circuit
When control unit (ECU) and decoder are not programmed, the following conditions occur:
- Key switch set to "OFF". Deterrent flashing inactive.
- Key switch set to "ON". Ignition and injection disabled and LED on with solid light.
When the key switch is set to "ON", the LED
switches on as shown in the figure.
The LED is turned on by the decoder.
The control unit data can be checked by the diagnostic tester.
Specific tooling
020680Y Diagnosis Tool
To connect the diagnostic tester, open the spark plug inspection port and pull out the EMS Diagnosis
socket. Remove the protection cap and connect the tester terminal.
Power the diagnostic tester by connecting the terminals to the battery poles, or the specific connector
to the socket inside the gloves compartment.
Set the switch to "ON" and select the diagnostic
tester menu to the immobiliser function.
Scroll the pages to display the control unit data.
N.B.
AN UNPROGRAMMED SYSTEM CANNOT BE DETECTED UPON FIRST FITTING, OR IN CASE
THE DECODER AND THE CONTROL UNIT ARE REPLACED CONCURRENTLY.
The information will be as follows:
Unprogrammed control unit «ON»
Start-up disabled «ON»
Key number Zero › 250
Setting the circuit
The electronic ignition system is controlled by the control unit with the integrated Immobilizer system.
The immobilizer is an anti-theft system that allows the vehicle to be operated only when it is started with
coded keys recognised by the control unit. The code is integrated in a transponder in the key block.
INJEC - 214
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This allows the driver clear operation without having to do anything other than just turning the key. The
Immobiliser system consists of the following components:
- electronic control unit
- decoder
- immobilizer aerial
- master key with integrated transponder (brown key)
- service key with incorporated transponder (black key)
- HV coil
- diagnosis LED
The diagnosis LED also works as a theft-deterrent blinker. This function is activated every time the
ignition switch is turned to the "OFF" position, or the emergency stop switch is turned to the "OFF"
position. It remains activated for 48 hours in order not to affect the battery charge. When the ignition
switch is turned to the "ON" position, the theft-deterrent blinker function is deactivated. Subsequently,
a flash confirms the switching to the "ON" status. The duration of the flash depends on the programming
of the electronic control unit If the LED is off regardless of the position of the ignition-key switch and/or
the instrument panel is not initiated, check if:
•
there is battery voltage
•
efficiency of fuse No. 7
•
there is power to the control unit as specified below:
Disconnect the connector from the control unit. Check the following conditions:
With the key switch set to OFF:
•
Battery voltage between terminals 17-23 and terminals 17-chassis ground (continuous power supply). If there is no voltage, check that fuse No. 6 is in good conditions.
With the key switch in position ON and the engine stop switch in RUN:
•
Battery voltage between terminals 26-23 and terminals 26-chassis ground (continuous power supply). If there is no voltage, check:
1. that fuses No. 11 and No. 2 and their wirings are in good conditions.
2. that the engine stop remote control switch is in good conditions.
•
Check for voltage on the white-black cable at the exit from the engine stop remote control
switch. If there is no voltage, check:
1. key switch contacts
2. the condition of the engine stop switch, then the ground connection of the green/black cable of the
engine stop remote control switch with the stand lifted and the engine stop switch in the RUN position.
3. that the engine stop remote control switch diode is in good conditions.
If no fault is found, replace the control unit.
N.B.
AN ACCIDENTAL LOSS OF THE SERVICE KEY PROGRAMMING CAN ARISE FROM GENERAL
FAULTS OF THE IGNITION SYSTEM. IN THIS CASE, CHECK THE HV LINE SHIELDING.
INJEC - 215
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In any case it is advisable to use resistive spark plugs.
LED signals
When the ignition system is not encrypted, any key will start the engine but limited to 2000 rpm. The
keys can only be recognised when the decoder has been correctly programmed. The procedure for
programming a new decoder requires the recognition of the "master" key as the first key to be programmed: this is particularly important as it is the only key that allows the decoder to be reset and
reprogrammed for programming the service keys.
The master and service keys must be used to code the system as follows:
- Insert the Master key, turn it to «ON» and keep this position for two seconds (lower and upper limits
1 to 3 seconds).
- Insert the service key and turn it to «ON» for 2 seconds.
- If you have copies of the key, repeat the operation with each key.
- Insert the MASTER key again and turn it to «ON» for 2 seconds.
The maximum time to change keys is 10 seconds.
A maximum of 7 service keys can be programmed at one time.
It is essential to adhere to the times and the procedure. If you do not, start again from the beginning.
Once the system has been programmed, master key transponder, decoder and control unit are strictly
matched. With this link established, it is now possible to encode new service keys, in the event of losses,
replacements, etc. Each new programming deletes the previous one so, in order to add or eliminate
keys, you must repeat the procedure using all the keys you intend to keep using.
If a service key becomes uncoded, the efficiency of the high voltage circuit shielding must be thoroughly
inspected: In any case it is advisable to use resistive spark plugs.
Characteristic
MASTER key:
BROWN KEY
SERVICE key.
BLACK KEY
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Checking master-box data
Connect the diagnostic tester.
Set to «ON» and select the immobilizer function.
Scroll the pages the find the data.
Specific tooling
020680Y Diagnosis Tool
The information will be as follows:
- Unprogrammed control unit «OFF»
- Start-up disabled «OFF»
- Number of keys 2*
*The number denotes how many keys have been used for programming, master key included.
Resetting the circuit
1 Replacing the small cylinder
- Remove the original master key transponder and install it on the master key of the new cylinder.
- Program the system again as described above.
2 Decoder replacement
When the decoder is replaced it is necessary to program the system again.
Programming is indispensable for the engine start-up. (see System programming).
3 Control unit replacement
Programming is indispensable when the control unit is replaced to enable the engine start-up.
In this case it is sufficient to switch to "ON" using the master key.
N.B.
- THE SERVICE KEY (BLACK-COLOURED) IS NOT USED FOR PROGRAMMING.
- WHEN NOT PROGRAMMED, THE CONTROL UNIT ALLOWS NO FUNCTIONAL DIAGNOSIS ON
THE ENGINE.
4 Replacing or duplicating service keys
Keys can be duplicated using the blank keys and
the original master key.
A copy may also be requested using the scooter
CODE CARD.
Program the system again using the master key
and all service keys (see System programming).
N.B.
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Injection
THE CODE CARD CAN ONLY BE USED WHEN THE ORIGINAL MASTER KEY IS AVAILABLE.
Diagnostic codes
The immobiliser system is tested each time the ignition-key switch is turned from OFF to ON. During
this diagnosis phase a number of control unit statuses can be seen and various light codes displayed. Regardless of the code transmitted, if at
the end of the diagnosis the led remains off permanently, the ignition is enabled. If, however, the
led remains on permanently, it means the ignition
is inhibited:
1. New decoder - key inserted: a single 2 second
flash is displayed, after which the LED remains off
permanently. The keys can be stored to memory,
the vehicle can be started but with a limitation imposed on the number of revs.
2. New decoder - transponder missing or illegible: The LED is permanently ON; in this condition,
no operations are possible, including starting of
the vehicle.
3. Decoder programmed - service key inserted
(normal operating condition): a single 0.7-second flash is displayed, after which the LED remains off steadily. The engine can be started.
4. Decoder programmed - master key inserted: a 0.7-sec flash is displayed followed by the
LED remaining off for 2 sec. and then by short
0.46-sec flashes the same number of times as
there are keys stored in the memory including the
Master key. When the diagnosis has been completed, the LED remains permanently OFF. The
engine can be started.
5. Decoder programmed - fault detected: a light code is displayed according to the fault detected,
after which the LED remains on steadily. The engine cannot be started. The codes that can be transmitted are:
•
1-flash code
INJEC - 218
XEVO 400ie
•
2-flash code
•
3-flash code
Injection
Code 1
A one-flash code indicates a system where the serial line is not present or is not detected. Check the
Immobilizer aerial wiring and change it if necessary.
Code 2
A 2-flash code indicates a system where the decoder does not recognise the transponder signal.
This might depend on the inefficiency of the immobiliser aerial or the transponder.
Turn the switch to ON using several keys: if the
code is repeated even with the Master key, check
the aerial wiring and change it if necessary. Otherwise replace the faulty key and/or reprogram the
decoder. If the problem persists, replace the decoder.
Code 3
The 3-flash code indicates a system where the decoder does not recognise the key. Turn the switch
to ON using several keys: If the error code is repeated even with the Master key, replace the decoder. If this is not the case, reprogram the
decoder.
INJEC - 219
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Injection
Tachometer
Electric characteristic
TERMINAL: 7 - 12
CONDITIONS : Start-up speed
STANDARD: approx. 0.8 - 4.5 V
CIRCUIT LAYOUT
1
2
Specification
Electronic control unit
Engine rpm sensor
Desc./Quantity
The sensor allows the rotations and the angular position of the crankshaft to be recognised by reference
to the TDC. Since the wheel speed sensor is pivoted on the camshaft it is also possible to recognise
the 4-stroke cycle. Such solution allows controlling the injector and the spark plug every two revolutions
of the crankshaft.
The sensor is of the reluctance variation type and is therefore comparable to an alternate current generator that powers the control unit.
The signal frequency is interrupted by the vacuum generated by the two missing teeth on the wheel
speed sensor.
The sensor signal is fundamental for obtaining starting of the engine.
The ECU self-diagnosis is enabled on this circuit in 2 different ways based on use conditions.
Right after turning to «ON» (Power under the panel present in the CPU), the continuity and isolation of
the sensor and related circuit are checked.
Any faults discovered in this phase are signalled via the injection telltale light.
INJEC - 220
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Injection
The fault continues to be signalled, but the circuit is only checked when turning to "ON". Therefore faults
which occur or disappear after turning to "ON" are not acknowledged.
During and after the start phase, the self-diagnosis checks the alternating current produced by the
sensor (synchronisation of the signal panel).
If a signal panel is detected which is not perfectly synchronised, corrective interventions are applied
used to reconstruct the cycle. In this case the self-diagnosis records the number of lost synchronisations
and signals the fault via the injection telltale light.
The light remains on during the period the cycle is reconstructed.
If the rpm-timing signal is completely missing due to mechanical faults or lack of magnetic activity, it
will be impossible to start the engine (or it will stop while driving) and the self-diagnosis will not be able
to record any faults.
To check the sensor and related circuit, proceed as follows:
1 - Connect the scooter tester.
Select the function "ERRORS" in the menu.
Check for any faults on the «Signal panel».
YES go to 2 NO go to 3
Specific tooling
020680Y Diagnosis Tool
2 THE FAULT HAS BEEN RECORDED IN MEMORISED STATUS:
The signal panel may be synchronised with possibility of starting. The fault is probably occasional.
N.B.
A NON-CONFORMING SIGNAL PANEL FAULT MAY ALSO BE DETECTED IF THE ENGINE STOPS
AFTER A FAULT INVOLVING IDLING.
INJEC - 221
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THE FAULT HAS BEEN RECORDED IN CURRENT STATUS:
The control circuit gave a negative result when
switching to "ON".
AHEAD go to 8
3 Select the "PARAMETERS" function on the
menu.
Check the number of «lost synchronisations»:
1 TOOTH and > 1 TOOTH
YES go to 4 NO go to 5
4 THE INDICATION INCREASES PROGRESSIVELY OVER TIME WITH THE ROTATION OF
THE ENGINE.
AHEAD go to 8
5 INDICATION = 1-3
THE RPM-TIMING CIRCUIT IS IN COMPLIANCE.
Make an attempt to start and use the parameters
function to check for the «engine revs» indication.
YES go to 6 NO go to 7
6 The signal panel is in conformance.
7 CHECK THE AIR GAP AND MAGNETIC ACTIVITY OF THE SENSOR.
See engine mechanics.
8 Check the sensor and related connection circuit
with the control unit.
AHEAD go to 9
9 Install the connection wiring between the control
unit and injection system. Do not make the connection with the control unit.
CONTINUE at 10
Specific tooling
020481Y Control unit interface wiring
10 Install the connection connector between the rpm timing sensor and injection system.
Measure the sensor resistance by connecting a multimeter between the terminals marked + and - (see
the "Electrical system" chapter).
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RESISTANCE OF THE RPM TIMING SENSOR: (AT 25°C)
1
2
Specification
Model with 1 clamp:
Model with 2 clamps:
Desc./Quantity
860 Ω ± 130 Ω
680 Ω ± 100 Ω
YES go to 11 NO go to 12
11 - Check the earth isolation between a pole and the shielding.
(see the «Electrical system» chapter).
Electric characteristic
S-+=
infinite (>MΩ)
YES go to 13 NO go to 12
12 - Replace the revolution sensor.
13 - Reconnect the rpm-timing sensor connector.
Repeat the resistance check through the injection
wiring pin 7, pin 12.
Electric characteristic
7-12 =
680 Ω ± 100 Ω (Model with 2 clamps)
7-12 =
890 Ω ± 130 Ω (Model with 1 clamp)
The value should be very close to that detected directly by the sensor.
YES go to 17 NO go to 14
14 - Higher or infinite resistance.
YES go to 15 NO go to 16
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15 - Check the connectors carefully. Disconnect and check the continuity between connector and pin
7-12
Electric characteristic
Connector - 7 =
Continuity
Connector - 12 =
Continuity
Fix the connectors or replace the cable harness.
Electric characteristic
Resistance
0
16 Repair or replace the injection wiring (short circuit)
17 - Check the earth insulation again.
Electric characteristic
7-23 =
infinite (>1MΩ)
YES go to 19 NO go to 18
18 - Check the sensor and control unit connectors.
Repair or replace the injection wiring
19 - Measure the alternated voltage between pins
7 and 12 with engine at start-up speed.
Electric characteristic
7-12 =
approx. 0.8 - 4.5 V eff
Revolution speed =
approx. 300-400 rpm
YES go to 20 NO go to 21
20 The sensor circuit is in conformance.
Use the parameter function to check if the engine rpm indication is present when trying to start.
If not, carefully check the ECU connection connector and replace it if necessary.
21 Check the air gap and magnetic activity of the sensor.
See the "Combustion unit and distribution" chapter.
If there is no magnetic activity replace the sensor.
N.B.
-THE SENSOR CABLE MUST BE PROPERLY INSTALLED FOR SERVICING.
-DO NOT FORCE THE CABLE.
-A POOR CABLE SHIELDING CAN IMPAIR THE ENGINE PERFORMANCE AT HIGH SPEED.
INJEC - 224
XEVO 400ie
Injection
HT coil
This section describes the ignition system operation.
Circuit diagram
Electric characteristic
TERMINALS: 20 - 23
CONDITIONS : During the pump timing with engine off.
STANDARD: Battery voltage
KEY:
2. Engine stop switch
3. Diode
4. Side stand button
5. Key switch
6. Electric fan
7. Engine stop remote control switch
9. Main fuses
11. Auxiliary fuses
12. Stop button on front brake
13. Stop button on rear brake
14.Immobiliser remote control switch
INJEC - 225
Injection
15. 12V-12Ah Battery
16. Starter motor
17. Start-up remote control switch
20. Starter button
32. Rear light
A. Stop light bulbs
43. Injection load remote control
45. Fuel injector
48. Instrument panel
50. HV coil
51. Immobilizer aerial
52. Decoder
53. Injection ECU
54. Intake air temperature sensor
55. Fuel pump
56. Diagnosis connector
57. Electric fan remote control
58. Engine rpm sensor
59. Stepper motor
60. Engine temperature sensor
61. Throttle valve potentiometer
62. Lambda probe
The ignition system is integrated with the injection
and it is a high-efficiency inductive type ignition.
The control unit manages two important parameters:
- Ignition advance
This is optimised according to the engine rpm, to
the engine load, temperature and ambient pressure
With idle engine, it is optimised to obtain the stabilisation of the speed at 1450 ± 50 R/1'. - Magnetisation time
The coil magnetisation time is controlled by the
control unit. The ignition power is increased during
the engine start-up.
INJEC - 226
XEVO 400ie
XEVO 400ie
Injection
The injection system recognises the 4-stroke cycle
and therefore, ignition is only controlled during
compression.
To check the ignition circuit, proceed as follows:
1 - Connect the diagnostic tester. Select the menu
on the "ACTIVE DIAGNOSIS" function. Start the
HV coil check with switch set to «ON», switch to
«RUN» and side stand raised. Wait for the tester
to display: "TEST SUCCESSFUL"
YES go to 3 NO go to 2
Specific tooling
020680Y Diagnosis Tool
2 - The tester displays: «TEST FAILED». Repeat
the test and wait for the tester to display: «TEST
SUCCESSFUL»
YES go to 3 NO go to 4
3 - Select the menu on the "ERRORS" function.
Check the presence of current or stored errors relating to the HV coil.
YES go to 6 NO go to 5
4 - Test failed
YES go to 6
5 - The coil control circuit is efficient.
Check the HV coil secondary, the cable and the
shielded cap.
6 - Install the special tool between the injection
system and the control unit.
Measure voltage of the specific tool between pins
20 and 23 during the timing phase of the fuel
pump.
To start the timing, set the switch to «ON» with switch to «RUN» and side stand raised.
Electric characteristic
20-23 =
Battery voltage (coupled to the pump rotation -2 seconds).
If you want to increase the test time, enable the "pump relay diagnosis" function
(30 seconds)
YES go to 7 NO go to 8
7 - The coil primary control circuit is efficient.
INJEC - 227
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XEVO 400ie
Carefully check the connectors to the control unit and to the coil.
Replace the control unit, if necessary.
8 - Disconnect the connector to the HV coil primary.
Repeat the voltage check between the black-green wire and earth.
Electric characteristic
Black-green-23 =
battery voltage
(coupled to the pump rotation-2 seconds).
YES go to 10 NO go to 9
9 - Check the black-green wire continuity.
Repair or replace the cable harness.
N.B.
A FAILURE OF THE REMOTE CONTROL SWITCH WOULD CAUSE THE PUMP ROTATION FAILURE
10 - The positive power supply is conforming. Check the continuity between the pink-black wire of the
connector and pin 20.
Electric characteristic
Pink-black-20 =
Continuity
YES go to 12 NO go to 11
11 - Check the continuity of the pink-black wire in the two systems.
Electric characteristic
Pink-black (coil connector)-20 =
Continuity
INJEC - 228
XEVO 400ie
Injection
YES go to 12 NO go to 13
12 - Check the earth insulation of the negative line.
Electric characteristic
20-23 =
Ω infinite (>1MΩ)
YES go to 15 NO go to 14
13 - Repair or replace the faulty system. Repeat the check with the menu on «ACTIVE DIAGNOSIS».
14 - Repeat the earth insulation check in the two sections. Repair or replace the cable harness. Repeat
the check with the menu on «ACTIVE DIAGNOSIS» HV coil control simulation. Delete the errors stored
in memory.
15- Check the continuity of the HV coil primary between pin 20 of the interface wiring and the blackgreen cable of the injection load remote control base with both the control unit and the remote control
switch disconnected.
Electric characteristic
Primary resistance =
0.5± 8% Ω
INJEC - 229
Injection
XEVO 400ie
YES go to 16 NO go to 19
16 - Check the earth insulation of the primary circuit
Measure between one of the primary terminals and earth.
Electric characteristic
Primary-earth =
Ω infinite (>1MΩ)
YES go to 17 NO go to 1 9
17 - Check the secondary resistance.
Measure the resistance between one of the primary terminals and the spark plug cable output
Electric characteristic
Primary HV cable output =
3.1 ± 9% K Ω
YES go to 18 NO go to 19
18 - The coil is conforming.
19 - Replace the coil
INJEC - 230
XEVO 400ie
Injection
Inspecting the spark plug shielded cap
Measure the shielded cap resistance.
Electric characteristic
Resistance:
5 KΩ
If different values are measured (<1; >20KΩ), replace the shielded cap.
N.B.
A SHIELDLESS CAP OR SPARK PLUG CAN ADVERSELY AFFECT THE INJECTION SYSTEM.
FOR INFORMATION ON THE SPARK PLUG, SEE THE «SPECIFICATIONS» AND «MAINTENANCE» CHAPTERS.
Spark advance
The ignition advance is determined electronically on the basis of parameters known by the control unit.
For this reason it is not possible to interpret the reference values based on the engine rpm.
The ignition advance value is detectable at any time using the diagnostic tester.
It is possible to check whether the ignition advance determined by the injection system matches the
value actually activated on the engine, by means of the stroboscopic light.
Specific tooling
020680Y Diagnosis Tool
020330Y Stroboscopic light to check timing
Proceed as follows:
- Remove the transmission compartment cover as
described in the "automatic transmission" chapter.
INJEC - 231
Injection
- Remove the TDC reference inspection cap between flywheel and crankcase cover. See the "flywheel cover" chapter
- By the driving pulley, turn the engine to find the
alignment of the references to identify the TDC.
- Repeat for the reference between driving pulley
and engine crankcase.
- Refit the inspection cap on the flywheel side.
- Connect the diagnostic tester.
- Start the engine.
- Select the «parameters» function in this menu.
- Select the stroboscopic light control in the traditional four-stroke engine position (1 spark, 2 revs).
- Check that the real values of rpm and ignition
advance match those measured using the diagnostic tester.
If the values do not match, check:
- distribution timing
- revolution timing sensor
- injection control unit
INJEC - 232
XEVO 400ie
XEVO 400ie
Injection
Coolant temperature sensor
Electric characteristic
TERMINALS: 4 - 22
CONDITIONS : coolant temperature
STANDARD:
With connected sensor:
20° = 2500 ± 100 Ω
80° = 308 ± 6 Ω
KEY:
2. Engine stop switch
3. Diode
4. Side stand button
5. Key switch
6. Electric fan
7. Engine stop remote control switch
9. Main fuses
11. Auxiliary fuses
12. Stop button on front brake
13. Stop button on rear brake
14.Immobiliser remote control switch
INJEC - 233
Injection
XEVO 400ie
15. 12V-12Ah Battery
16. Starter motor
17. Start-up remote control switch
20. Starter button
32. Rear light
A. Stop light bulbs
43. Injection load remote control
45. Fuel injector
48. Instrument panel
50. HV coil
51. Immobilizer aerial
52. Decoder
53. Injection ECU
54. Intake air temperature sensor
55. Fuel pump
56. Diagnosis connector
57. Electric fan remote control
58. Engine rpm sensor
59. Stepper motor
60. Engine temperature sensor
61. Throttle valve potentiometer
62. Lambda probe
The coolant temperature sensor is installed on the engine head and provides the indications for the
digital instrument and for the injection.
It is realised with two electrically different sections.
The injection section is realised with an NTC sensor connected to a 5V powered circuit. The resistance
variation causes a variation of the circuit voltage. Such voltage is combined with a temperature value.
By this value, the control unit can manage the engine operation, optimising it for all temperatures.
A failure of this circuit causes the switching on of the injection telltale light and the tripping of the safeties
(among which the electric fan continuous start). In these conditions, the engine works, even though not
in an optimum way, always safeguarding the catalytic converter integrity.
A false temperature value that falls within the range of possible temperatures is a failure very difficult
to manage. This can cause a failure of the safeties and an improper management of the ignition. Such
failure is more easily detected upon the engine start-up.
To check the sensor and related circuit, proceed as follows:
1 - Connect the injection diagnostic tester and select the menu on the "errors" function.
Check whether faults have been recorded regarding the coolant temperature sensor.
YES go to 3 NO go to 2
INJEC - 234
XEVO 400ie
Injection
Specific tooling
020680Y Diagnosis Tool
2 - The EMS system has received no indications of temperatures out of the range of possible temperatures.
If you suspect a wrong temperature indication, proceed to perform the following check.
N.B.
A WRONG TEMPERATURE SIGNAL CAN BE DETECTED BY COUPLING THE ANALOGUE INSTRUMENT INDICATION WITH THE ELECTRIC FAN START.
IN ANY CASE, BEFORE CHECKING THE SENSOR, CHECK THE FILLING AND BLEEDING OF
THE COOLING SYSTEM
3 - Before checking the sensor and the relevant circuit, wait until the engine has cooled down and the
scooter has set to the working area temperature.
YES go to 4
4 - Set the switch to "ON" with switch to "RUN" and side stand raised. Select the menu on the "parameters" function. Do not start the engine.
YES go to 5
5 - Check the following values: coolant temperature intake air temperature ambient temperature The
three indications are equal or they are slightly different (e.g. 1° C).
YES go to 6 NO go to 7
6 - The temperature sensor is providing probably correct information.
Check at approx. 80° C.
7 - Install the special tool.
WARNING
DO NOT CONNECT THE CONTROL UNIT CONNECTOR.
Specific tooling
020481Y Control unit interface wiring
YES go to 8
8 - Disconnect the coolant temperature sensor
connector. Measure the sensor resistance between the terminals shown in the figure.
Check that the resistance matches the values declared according to the temperature.
Electric characteristic
TEMPERATURE RESISTANCE
9.6 Ω -10° C
5.975 Ω 0
3.81 Ω +10° C
2.5 Ω +20° C
1.68 Ω +30° C
0.3 Ω +80° C
YES go to 10 NO go to 9
9 - Replace the sensor.
INJEC - 235
Injection
XEVO 400ie
10 - Connect the sensor connector and repeat the resistive check at terminals 4 and 22;
Electric characteristic
4-22 =
Resistance equal to the value directly detected at the sensor.
YES go to 13 NO go to 11
11 - If slightly higher values are detected, check the connectors.
If infinite resistance is detected (>1MΩ), check the continuity of the two lines with disconnected connectors.
Electric characteristic
Blue-white-4 =
0 Ω (continuity)
Light blue/green-22 =
0 Ω (continuity)
YES point 12
12 - Repair or replace the cable harness.
YES go to 10
13 - Check that the sensor circuit is earth insulated.
Electric characteristic
4-23 =
Ω infinite (>1MΩ)
22-23 =
Ω infinite (>1MΩ)
INJEC - 236
XEVO 400ie
Injection
YES go to 15 NO go to 14
14 - Repair or replace the wiring.
Check the air temperature lines and the throttle
valve position.
YES go to 15
15 - Connect the special tool to the control unit.
Set the switch to "ON" with switch to "RUN" and
side stand raised.
YES go to 16
Specific tooling
020481Y Control unit interface wiring
16 - Measure voltage at terminals 4 and 22;
TEMPERATURE VOLTAGE
1
2
3
4
5
6
Specification
XV
XV
XV
XV
XV
XV
Desc./Quantity
-10° C
0
+10° C
+20° C
+30° C
+80° C
YES go to 21 NO go to 17
17
Repeat the wiring and sensor continuity checks.
YES go to 18
18
Electric characteristic
INJEC - 237
Injection
Measured value =
0Ω
Repeat the sensor and circuit earth insulation
check.
YES go to 19 NO go to 20
19 - Check the control unit connector.
Check the control unit power supply.
Replace the control unit, if necessary.
20 - Repair or replace the cable harness.
21 - Start the engine and check that voltage decreases gradually according to the temperature
increase as per table.
YES go to 22 NO go to 23
22 - The temperature signal is conforming.
23 - Replace the temperature sensor.
N.B.
FOR A MORE ACCURATE CHECK OF THE SENSOR, REMOVE IT FROM THE ENGINE AND CHECK ITS RESISTANCE AT CONTROLLED TEMPERATURE.
USING A SUITABLE CONTAINER, IMMERSE THE METAL
PORTION OF THE SENSOR IN WATER, HEAT GRADUALLY AND READ THE TEMPERATURE AND RESISTANCE
VALUES.
CHECK THE MATCHING AS PER TABLE
Intake air temperature sensor
Electric characteristic
TERMINALS: 18 - 22
CONDITIONS: Intake air temperature 20°
STANDARD: With connected sensor: 3750 ± 200 Ω
INJEC - 238
XEVO 400ie
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Injection
KEY:
2. Engine stop switch
3. Diode
4. Side stand button
5. Key switch
6. Electric fan
7. Engine stop remote control switch
9. Main fuses
11. Auxiliary fuses
12. Stop button on front brake
13. Stop button on rear brake
14.Immobiliser remote control switch
15. 12V-12Ah Battery
16. Starter motor
17. Start-up remote control switch
20. Starter button
32. Rear light
A. Stop light bulbs
43. Injection load remote control
45. Fuel injector
INJEC - 239
Injection
48. Instrument panel
50. HV coil
51. Immobilizer aerial
52. Decoder
53. Injection ECU
54. Intake air temperature sensor
55. Fuel pump
56. Diagnosis connector
57. Electric fan remote control
58. Engine rpm sensor
59. Stepper motor
60. Engine temperature sensor
61. Throttle valve potentiometer
62. Lambda probe
The intake air temperature sensor is installed on
the bottom side of the throttle body on the filter box
side.
This is NTC sensor and has the same functional
layout as the coolant temperature sensor.
This signal is used to optimise the engine performance. Anyway, this data is less important than the
coolant temperature signal.
A failure of this circuit causes the control unit to
turn on the injection telltale light and activate the
safety control, thereby ensuring the engine operation.
To check the sensor and related circuit, proceed
as follows:
1 - Connect the diagnostic tester.
Select the function "ERROR" in the menu.
Check whether there are any indications regarding
the intake air temperature sensor.
INJEC - 240
XEVO 400ie
XEVO 400ie
Injection
YES go to 3 NO go to 2
Specific tooling
020680Y Diagnosis Tool
2 - The EMS system has received no indications of temperatures out of the range of possible values.
If you suspect a wrong temperature indication, proceed to perform the following check.
3 - Before checking the sensor and the relevant circuit, wait until the engine has cooled down and the
scooter has set to the working area temperature.
YES go to 4
4 - Set the switch to "ON" with switch to "RUN" and side stand raised. On the diagnostic tester, select
the «PARAMETERS» menu.
YES go to 5
5 - Check the following values:
coolant temperature
intake air temperature
ambient temperature indicated by the digital instrument.
The three indications are equal or they are slightly different (e.g. 1° C).
YES go to 6 NO go to 7
6 - The intake air temperature sensor is providing an incorrect information.
7 - Install the special tool. Do not connect the control unit connector.
YES go to 8
Specific tooling
020481Y Control unit interface wiring
8 - Disconnect the intake air temperature sensor connector.
Measure the resistance between the sensor terminals. Check that the resistance matches the values
declared according to the temperature.
TEMPERATURE RESISTANCE
1
2
3
4
5
Specification
9,6 KΩ
5,975 KΩ
3,81 KΩ
2,5 KΩ
1,68 KΩ
Desc./Quantity
-10° C
0
+10° C
+20° C
+30° C
INJEC - 241
Injection
XEVO 400ie
YES go to 10 NO go to 9
9 - Replace the sensor.
10 - Connect the sensor connector and repeat the resistive check at terminals 18 and 22.
Electric characteristic
18-22 =
Resistance equal to the value directly detected at the sensor.
YES go to 13 NO go to 11
11 - If slightly higher values are detected, check the connectors.
If infinite resistance is detected (>1MΩ), check the continuity of the two lines with disconnected connectors.
Electric characteristic
Grey-white-18 =
0 Ω (continuity)
Light blue/green-22 =
0 Ω (continuity)
YES point 12
INJEC - 242
XEVO 400ie
Injection
12 - Repair or replace the cable harness.
YES go to 10
13 - Check that the sensor circuit is earth insulated.
Electric characteristic
18-23 =
infinite (>1MΩ)
22-23 =
infinite (>1MΩ)
YES go to 15 NO go to 14
14 - Repair or replace the wiring. Check the valve position and the fluid temp. lines.
YES go to 13
15 - Connect the special tool to the control unit.
Set the switch to "ON" with switch in "RUN" and side stand raised.
YES go to 16
Specific tooling
INJEC - 243
XEVO 400ie
Injection
020481Y Control unit interface wiring
16 - Measure voltage at terminals 18 and 22.
Electric characteristic
18-22 =
V as in the table.
TEMPERATURE VOLTAGE
1
2
3
4
5
6
Specification
XV
XV
XV
XV
XV
XV
Desc./Quantity
-10° C
0
+10° C
+20° C
+30° C
+80° C
YES go to 21 NO go to 17
17
Electric characteristic
Power supply voltage value =
5±0.2 V
Repeat the wiring and sensor continuity checks.
YES go to 18
18
Electric characteristic
Measured value =
0Ω
Repeat the sensor circuit earth insulation check.
YES go to 19 NO go to 20
19 - Check the control unit connector. Check the control unit power supply. Replace the control unit, if
necessary.
20 - Repair or replace the cable harness.
21 - Start the engine and check that voltage decreases gradually according to the air filter box temperature increase.
N.B.
INJEC - 244
XEVO 400ie
Injection
WITH MILD WEATHER, 30° C CAN BE EASILY REACHED AFTER A FEW MINUTES OF STOP
WITH IDLE ENGINE.
Pressure sensor
This sensor does not have a system since it is directly installed into the control unit.
The sensor allows the control unit to optimise the
engine performance based on altimetric variations.
To check the sensor, proceed as follows:
1 - Connect the diagnostic tester.
Select the function "ERRORS" in the menu.
Check whether there are any indications regarding
the pressure sensor.
YES go to 2 NO go to 3
Specific tooling
020680Y Diagnosis Tool
2 - Replace the injection control unit.
3 - Select the menu on the "PARAMETERS" function.
Check that the pressure value in mm/Hg matches that of another scooter or of an external barometer.
Electric characteristic
Max error:
± 20 mmHg
YES go to 4 NO go to 5
4 - The ambient pressure signal is correct.
5 - Replace the injection control unit.
INJEC - 245
XEVO 400ie
Injection
Throttle valve opening sensor
Throttle position sensor (t.p.s.)
Electric characteristic
TERMINALS: 1 - 22
CONDITIONS: Switch set to "ON"
STANDARD: 5 V
TERMINALS: 11 - 22
CONDITIONS: Opening the throttle gradually
STANDARD: Volt= Progressive increase
CIRCUIT LAYOUT
1
2
3
4
Specification
Electronic control unit
Valve position sensor
Fluid temperature sensor
Air temperature sensor
The throttle valve position sensor is not removable
and is installed on the throttle body.
This sensor receives a 5-V power supply from the
control unit and transmit a gradually increasing
voltage to the same, with an increase of the throttle
valve opening. The control unit converts this voltage at an angular position of the valve.
The engine rpm and the throttle valve position are
the two basic signals for the engine management.
A failure of this circuit causes the switching on of
the injection telltale light and the tripping of the
safeties. In these conditions, the engine works,
even though not in an optimum way, always safeguarding the catalytic converter integrity.
The throttle valve position signal is especially important at the small valve openings. These areas
are also where the sensor works more frequently,
and therefore they require more frequent checks
after a high number of kilometres run.
To check the sensor and related circuit, proceed
as follows:
1 - Connect the diagnostic tester.
Set the switch to "ON" with switch to "RUN" and
side stand raised.
INJEC - 246
Desc./Quantity
XEVO 400ie
Injection
Select the tester menu on the «ERRORS» function.
Check whether the control unit has detected any
failures relating to the throttle valve position signal.
YES go to 6 NO go to 2
Specific tooling
020680Y Diagnosis Tool
2 - Select the diagnostic tester menu on the "PARAMETERS" function.
Check whether the control unit recognises the extreme positions:
Throttle valve to minimum
Throttle valve to maximum
YES go to 4 NO go to 3
3 - Check the adjustment of the throttle valve control flexible transmissions. Fix or replace, if required.
YES go to 2
4 - Gradually open the throttle valve, check that the mV value increases progressively and proportionally
with the opening variation.
YES go to 5 NO go to 6
5 - The throttle valve position signal is conforming.
6 - Connect the special tool to the injection system.
Do not connect the tool to the control unit.
Disconnect the throttle valve position sensor connector.
Check the continuity between the connector's terminals and the relevant pins on the control unit.
Specific tooling
020481Y Control unit interface wiring
Electric characteristic
Light blue/green-22 =
0 Ω (continuity)
Brown-yellow-1 =
0 Ω (continuity)
Orange-light blue-11 =
0 Ω (continuity)
INJEC - 247
Injection
YES go to 8 NO go to 7
7 - Repair or replace the injection wiring.
YES go to 6
8 - Check the earth insulation of the three circuit lines.
Electric characteristic
22-23 =
Ω infinite (>1M)
1-23 =
Ω infinite (>1M)
11-23 =
Ω infinite (>1M)
YES go to 10 NO go to 9
INJEC - 248
XEVO 400ie
XEVO 400ie
Injection
9 - Repair or replace the injection wiring
YES go to 8
10 - Connect the special tool to the control unit.
Set the switch to "ON" with switch to "RUN" and side stand raised.
Measure voltage between terminals 1 and 22 of the special tool.
Specific tooling
020481Y Control unit interface wiring
Electric characteristic
1-22 =
5±0.2 V
YES go to 12 NO go to 11
11 - Check the control unit connector.
Replace the control unit, if necessary.
YES go to 10
12 - Connect the throttle valve position sensor connector.
Repeat the voltage measurement between terminals 1 and 22 of the special tool.
Electric characteristic
1-22 =
5±0.2 V
INJEC - 249
Injection
XEVO 400ie
YES go to 13 NO go to 14
13 - Measure voltage between terminals 11 and 22. Gradually open the throttle valve and check that
the voltage value increases progressively.
N.B.
BY WAY OF AN INDICATION, VOLTAGE MAY VARY FROM APPROX. 700MV AT MINIMUM, AND
ABOVE 4V AT MAXIMUM.
Electric characteristic
11-22 =
V (progressive variation)
The possible variations of the limit values are
caused by the sensor installation tolerances.
YES go to 15 NO go to 14
14 - Replace the throttle body along with sensors
and Stepper.
YES point 12
15 - Check that the voltage measured at pins 11
and 22 matches that indicated by the diagnostic
tester set to "PARAMETERS".
YES go to 16 NO go to 17
16 - The throttle valve position sensor and relevant circuit are conforming.
17 - Replace the control unit.
Zeroing the throttle
Resetting the throttle valve position signal (TPS reset)
The throttle body is supplied with throttle valve position sensor and is pre-calibrated.
Pre-calibration entails regulating the minimum opening of the throttle valve to obtain a certain flow of
air under pre-set reference conditions.
Pre-calibration ensures optimal air flow to control idling.
This regulation must not be tampered with in any way whatsoever.
The injection system will complete the management of the idling through the Stepper motor and the
variation of the ignition advance.
INJEC - 250
XEVO 400ie
Injection
The throttle body after the pre-calibration has an opened valve with an angle that can vary depending
on the tolerances of the machining of the pipe and the valve itself.
The valve position sensor can also assume various fitting positions. For these reasons the mV of the
sensor with the valve at idle can vary from one throttle body to another.
To obtain the optimum fuel mixture, especially at small openings of the throttle valve, it is essential to
match the throttle body with the control unit following the procedure known as TPS resetting.
With this operation we inform the control unit, as the starting point, of the mV value corresponding to
the pre-calibrated position. The control unit will recognise such value as angle 5.24°.
To reset, proceed as follows:
Connect the diagnostic tester.
Set the switch to "ON" with switch in "RUN" and
side stand raised.
Select the functions of the diagnostic tester on
«TPS RESET».
Specific tooling
020680Y Diagnosis Tool
Make sure that the throttle valve with the control is
supporting the stop screw.
Guaranteeing that this position will be kept, send
a confirmation for the TPS reset procedure.
INJEC - 251
XEVO 400ie
Injection
Select the "PARAMETERS" function and check
that the TPS reset "YES" is displayed.
Reset should be performed in the following cases:
- on first fitting.
- in case of replacement of the throttle body
- if the injection control unit is replaced.
N.B.
THE TPS RESET PROCEDURE MUST NOT BE CARRIED OUT WITH A USED THROTTLE BODY
BECAUSE POSSIBLE VALVE WEAR AND STOP WEAR FOR THE MINIMUM OPENING MAKE THE
AIR FLOW DIFFERENTLY FROM THAT OF PRE-CALIBRATION.
Step motor
CIRCUIT LAYOUT
1
2
Specification
Electronic control unit
Stepper motor
The throttle body is provided with an auxiliary air
circuit. This is enabled by a piston valve controlled
by a Stepper motor.
The Stepper is powered by the control unit only
when the opening must be changed.
The revolution is divided into portions called
"steps".
By changing the opening "steps" it is possible to
properly feed the engine to facilitate the start-up
INJEC - 252
Desc./Quantity
Stepper motor
XEVO 400ie
Injection
procedure and adjust the air feeding with cold engine. When the engine reaches the working temperature, the Stepper partly closes again.
To prevent wear of the adjustment piston, operation at full speed is obtained with a minimum opening of 43 - 45 "steps".
To recover possible adjustments, every switching
to "OFF" causes the piston to close up to end of
travel and to open up again by a fixed number of
steps (self-reset).
When the control unit changes the Stepper opening "steps" it also changes the injection time to
ensure proper ignition.
The engine idle speed is practically stabilised at
1550-50 rpm. After a hot start-up step you can
perceive the first increase in the revolutions and
the subsequent closing of the Stepper to stabilise
the speed.
In case of irregular speed, before carrying out
electric checks inspect the throttle valve and the
auxiliary air circuit cleaning.
To check the Stepper and the relevant circuit, proceed as follows:
1 - Connect the diagnostic tester.
Set the switch to "ON" with switch to "RUN" and
side stand raised.
Lift the scooter on the central stand. Select the
function "ERRORS" in the menu.
Check whether the control unit has detected any
failures relating to the Stepper circuit.
YES go to 8 NO go to 2
Specific tooling
020680Y Diagnosis Tool
2 - Select the menu on the "PARAMETERS" function. Check the number of "steps" programmed by
the control unit to obtain start-up. This setting is a function of the engine temperature.
Electric characteristic
20° C =
approx. 135 - 140 steps
INJEC - 253
Injection
XEVO 400ie
YES go to 3 NO go to 4
3 - Start the engine and let it warm up.
With a coolant temperature of more than 70°C, the
control unit must control the Stepper with about 45
«steps».
YES go to 5 NO go to 4
4 - Check the coolant temperature sensor signal. Check the control unit, if necessary.
5 - Select the menu on the «ACTIVE DIAGNOSIS» function. Select «STEPPER» diagnosis. Start the
diagnosis with idle engine at the working temperature. Check whether the Stepper controls some revolution variations and wait for the diagnostic tester response.
N.B.
THE ECU ENABLES THE DIAGNOSIS ONLY WHEN THE IDLE SPEED IS WITHIN THE SPECIFICATIONS.
YES go to 6 NO go to 8
6 - Test successful. Variations of revolutions perceived.
YES go to 7 NO go to 9
7 - Stepper and relevant circuit efficient.
8- Test failed. No variations of revolutions. Check the Stepper circuit. Disconnect the Stepper connector.
Check the resistance of the Stepper circuits by connecting the tester as indicated in the figure. The two
measurements must have the same value.
Electric characteristic
INJEC - 254
XEVO 400ie
Injection
Resistance =
approx. 51 Ω
YES go to 11 NO go to 10
9 - Test successful.
No variations of revolutions.
Remove the throttle body.
Check the auxiliary air circuit cleaning. Switch from
"ON" to "OFF" and again to "ON" and check whether the piston valve moves. If the valve does not
move, replace the throttle body.
10 - Replace the throttle body
11 - Connect the special tool.
For these checks, do not connect the special tool to the control unit. Check the continuity of the 4 power
supply lines of the Stepper.
Specific tooling
020481Y Control unit interface wiring
Electric characteristic
A Light blue-red-14 =
0 Ω (continuity)
B Orange-blue-6 =
0 Ω (continuity)
C Light blue-yellow-21 =
0 Ω (continuity)
D Light blue-black-24 =
0 Ω (continuity)
INJEC - 255
Injection
YES go to 12 NO go to 13
12 - Check the earth insulation of the 4 Stepper lines.
Electric characteristic
14-23 =
>1 MΩ (infinite)
6-23 =
>1 MΩ (infinite)
21-23 =
>1 MΩ (infinite)
24-23 =
>1 MΩ (infinite)
YES go to 14 NO go to 13
13 - Repair or replace the wiring.
YES go to 11
14 - Connect the Stepper connector.
Repeat the continuity check with the tool pins.
Electric characteristic
14-24 =
approx. 51 Ω
6-21 =
approx. 51 Ω
INJEC - 256
XEVO 400ie
XEVO 400ie
Injection
YES go to 16 NO go to 15
15 - Check cable harness and connectors more carefully.
16 - Connect the control unit connector.
Set the switch to «ON» with switch to «RUN» and side stand raised. Repeat the «ON» «OFF» «ON»
switching.
Check the presence of voltage pulses on the Stepper command lines.
Set-up for direct voltage measurements.
N.B.
PULSES ARE USED TO CHANGE THE STEPPER POSITION.
Electric characteristic
14-24 =
V (pulses for a few seconds)
6-21 =
V (pulses for a few seconds)
After reaching the optimum position, the power supply voltage becomes null.
YES go to 17 NO go to 18
17 - The Stepper circuit is efficient.
18 - Check the control unit connector. Replace the control unit, if necessary.
Lambda probe
SIGNAL CONTROL
INJEC - 257
XEVO 400ie
Injection
Install the electronic control unit interface wiring.
Start the engine and warm up until the electric fan
switches on.
Use an analogue multimeter with a direct voltage
scale measuring down to 2 V.
Connect the multimeter probes between pin 2 (-)
and pin 8 (+)
With the engine running at idle speed, check that
the voltage oscillates between 0V and 1V
With the throttle valve completely open, the voltage is approx. 1V.
During the closing phase, the voltage is approx.
0V.
If the voltage remains constant, the sensor may be
damaged. Remove the sensor and check that
there are no oil or carbon deposits inside it..
Impianto elettroventilatore
TERMINALS
5 - 23
CONDITIONS
Switch in position "ON"
Switch on "RUN"
Side stand raised
Electric fan off
INJEC - 258
STANDARD
Battery voltage
XEVO 400ie
Injection
KEY:
2. Engine stop switch
3. Diode
4. Side stand button
5. Key switch
6. Electric fan
7. Engine stop remote control switch
9. Main fuses
11. Auxiliary fuses
12. Stop button on front brake
13. Stop button on rear brake
14.Immobiliser remote control switch
15. 12V-12Ah Battery
16. Starter motor
17. Start-up remote control switch
20. Starter button
32. Rear light
A. Stop light bulbs
43. Injection load remote control
45. Fuel injector
INJEC - 259
Injection
48. Instrument panel
50. HV coil
51. Immobilizer aerial
52. Decoder
53. Injection ECU
54. Intake air temperature sensor
55. Fuel pump
56. Diagnosis connector
57. Electric fan remote control
58. Engine rpm sensor
59. Stepper motor
60. Engine temperature sensor
61. Throttle valve potentiometer
62. Lambda probe
The electric fan system is powered by a remote
control switch connected to the continuous power
supply controlled by the electronic control unit of
the injection system.
The electronic control unit of the injection system
controls the electric fan in relation to the measured
engine temperature.
If prolonged running of the electric fan is noticed,
check the following carefully before starting to
check the electrical system:
- Coolant level in the expansion tank - bleeding of
the inlet hose to the engine
- Bleeding of the outlet from the head
- Function of the thermostat
- Function of the pump
For these checks, see chapter "Cooling system".
To check the circuit, proceed as follows:
1 - Connect the diagnostic tester. Set the switch to
"ON" with switch to "RUN" and side stand raised.
Select the "ERRORS" function. Check whether the
control unit has detected any failures relating to the
electric fan control circuit.
YES go to 8 NO go to 2
INJEC - 260
XEVO 400ie
XEVO 400ie
Injection
2 - Select the menu on the "ACTIVE DIAGNOSIS"
function. Activate the electric fan diagnostic function. Check acoustically for rotation of the electric
fan. Wait for the exit from the diagnostic tester.
YES go to 3 NO go to 4
3 - Test successful. The fan is rotating.
YES go to 5
4- Test failed. The fan is not rotating.
YES go to 8 NO go to 6
5- The electric fan system is OK
6 - Test successful. The fan is not functioning
YES go to 7
7 - The remote control switch circuit is OK. Check
the connections to the electric fan, the function of
the contacts of the remote control switch, the positive lines, the negative line and the motor of the
electric fan.
8 - Disconnect the remote control unit of the electric fan. Check the continuity of the excitation coil.
85 - 86 = 100 ± 50Ω
YES go to 10 NO go to 9
9 - Replace the remote control switch
YES go to 8
10 - Connect the special tool between the control
unit and the system. Do not connect the electronic
control unit
YES go to 11
11 - Check for positive battery voltage at pin 86 of
the remote control switch connector.
86 - 23 = battery voltage with switch set to «ON»
YES go to 13 NO go to 12
INJEC - 261
Injection
XEVO 400ie
12 - Repair or replace the wiring.
13 - Leaving the remote control switch disconnected, check for continuity between pin 85 of the
remote control switch connector and pin 5 of the
ECU.
85 (green/white) - 5 = 0Ω (continuity)
YES go to 14 NO go to 15
14 - Check the earth insulation.
5 - 23 >1 MΩ (infinite)
YES go to 16 NO go to 15
15 - Repair or replace the cable harness.
16 - Connect the remote control switch and check
for battery voltage between terminals 5 and 23 with
the key switch in position "ON".
5 - 23 = Battery voltage with panel in position "ON"
YES go to 17
17 - Repeat the check with the electronic control unit connected and the engine cold.
5 - 23 = Battery voltage with panel in position "ON"
If the fault continues, replace the electronic control unit.
INJEC - 262
INDEX OF TOPICS
SUSPENSIONS
SUSP
Suspensions
Front
Removing the front wheel
- Remove the fixing nut from the wheel axle on the
left side of the vehicle.
- Loosen the two screws fixing the wheel axle
clamp and remove the clamp.
Front wheel hub overhaul
Check that the wheel bearings do not show signs
of wear.
If you have to replace the wheel bearings, proceed
as follows:
- Remove the two bearings on the brake disc side
using pliers 14 and the special bell 9.
- Remove the internal spacer.
SUSP - 264
XEVO 400ie
XEVO 400ie
Suspensions
- Support the front wheel with two wooden shims
that make it possible to avoid scratching in the
case of contact with the rim.
- Insert the punch (consisting of adaptor handle,
24 mm adaptor and 15 mm guide) from the brake
disc side to permit the removal of the opposite side
bearing and the spacer bushing.
Specific tooling
020376Y Adaptor handle
020456Y Ø 24 mm adaptor
020412Y 15-mm guide
- Heat the bearing seat on the side opposite the
brake disc with the heat gun.
- Insert the bearing using the punch consisting of
adaptor handle, 40x37 mm adaptor and 15 mm
guide, and take it to the stop.
SUSP - 265
Suspensions
- Reinsert the spacer bushing on the brake disc
side using the appropriate tool and take it to the
stop.
Specific tooling
020376Y Adaptor handle
020359Y 42x47-mm Adaptor
020412Y 15-mm guide
020201Y Spacer bushing driving tube
- Refit the cap and tighten the five fixing screws.
- Turn over the wheel and insert the internal spacer
with the part fitted with the Seeger ring facing the
bearing on the brake disc side.
SUSP - 266
XEVO 400ie
XEVO 400ie
Suspensions
- Heat the bearing seat on the side the brake disc
with the heat gun.
2 - Insert the two bearings one at a time using the punch consisting of adaptor handle, 32x35 mm
adaptor and 15 mm guide, and take it to the stop.
Specific tooling
020376Y Adaptor handle
020357Y 32x35-mm Adaptor
020412Y 15-mm guide
Refitting the front wheel
- Grease the wheel axle, then install it from the
tone wheel side and install the tone wheel properly.
- Tighten the wheel axle nut to the prescribed torque.
N.B.
TAKE CARE NOT TO DAMAGE THE ODOMETER DRIVE.
FOR THE SAKE OF SAFETY, OFFSET THE INTERNAL
STOP FROM THE STOP OF THE TONE WHEEL BY 90°.
SUSP - 267
Suspensions
- Tighten the two safety screw on the leg to the
prescribed torque.
Locking torques (N*m)
Front wheel axle nut 45 - 50 Safety screw on fork
leg 6 ÷ 7
Front fork
Removal
- Remove the front wheel.
- Remove the front mudguard
- Remove the front brake calliper
- Remove the front and rear handlebar covers.
- Remove the pin mounting the handlebar to the
steering tube.
- Remove the handlebar and rest it on the shield
back plate.
Using the special tool, loosen and remove the upper ring nut, the spacer washer and the counterring nut.
- Extract the fork.
N.B.
TAKE CARE TO SUPPORT THE FORK SO AS TO PREVENT
IT FROM COMING OFF ABRUPTLY
Specific tooling
020055Y Wrench for steering tube ring nut
SUSP - 268
XEVO 400ie
XEVO 400ie
Suspensions
Overhaul
Servicing fork stems
- Using an inside 17 mm hexagonal spanner, loosen the top stem closing cap.
- Loosen the stem support clamp and remove fork
leg and stem.
- Remove the spring.
- Drain the oil.
- Remove the screw with copper washer shown in
the figure. To prevent the pumping member rotation, insert an inside 22 mm hexagon spanner into
the stem.
- Remove the pumping member.
- Remove the dust guard ring using a screwdriver
as shown in the figure.
N.B.
BE CAREFUL NOT TO DAMAGE THE DUST GUARD AND
THE STEM.
SUSP - 269
Suspensions
XEVO 400ie
- Remove the oil guard safety lock using a screwdriver.
- Repeatedly actuate the stem to remove it from
the fork leg.
- Extract the oil guard "D", the abutment washer
"C" and the top bushing "B".
- Widen and remove the bottom bushing "A".
Check pump unit
- Check that the oil holes on the pumping are free
from clogging.
- Check that the sealing snap ring is not damaged.
Check the spring length
- Check the length "A" of the spring.
Characteristic
Standard spring length:
291.6 mm
Servicing tapered bearing seats
- Check that the seats and the tapered bearings exhibit no scratches or wear.
N.B.
THE TAPERED BEARING SEATS SHOULD BE REMOVED ONLY IF STRICTLY NECESSARY.
SUSP - 270
XEVO 400ie
Suspensions
In case of replacement, proceed as follows:
- Using a bearing removal punch, inserted from the
bottom, remove the top seat on the steering head.
Then, remove the bottom seat of the tapered bearing inserting the punch from the top of the headstock.
Specific tooling
020004Y Punch for removing fifth wheels from
headstock
Refitting
Refitting stems on fork legs
Preassemble the stem as indicated:
- Install the bushing from the bottom of the stem
- Insert the following from the top of the stem:
1 Bushing "B"
2 Abutment washer "C"
3 Oil guard "D"
- Insert the pumping member guiding bushing at
the bottom end of the stem.
SUSP - 271
XEVO 400ie
Suspensions
- Insert the stem into the casing being careful not
to let the guiding bushing come out of the stem.
- Move the oil guard in abutment using a tube.
TUBE SIZE
Specification
Inside:
Outside:
Height:
- Insert the contrast spring into the pumping member.
- Insert the pumping member into the stem.
- Insert the stem into the fork leg being careful not
to let the guiding bushing come out of the stem.
- Insert and screw the pumping member screw with
a new copper washer and tighten to the prescribed
torque.
CAUTION
TO PREVENT THE PUMPING MEMBER ROTATION, INSERT AN INSIDE 22 MM HEXAGON WRENCH INTO THE
STEM.
Locking torques (N*m)
Pumping element fixing screw 25 - 35
- Pour recommended oil into the stem.
Recommended products
AGIP FORK 7.5 W Oil for front staple
Hydraulic oil SAE 7.5 W
Characteristic
Amount oil:
195 ± 3 cc
SUSP - 272
Desc./Quantity
44 mm
51 mm
approx. 105 mm
XEVO 400ie
Suspensions
- Insert the spring with the thickest turns at the
bottom.
- Insert the stem into the fork clamp.
- Tighten the clamp to screw the top stem closing
cap.
- Check that the sealing ring on the cap is in good
working order, then tighten the cap on the stem to
the prescribed torque.
Locking torques (N*m)
Stem upper cap 35 - 55
- Loosen the fork clamp screws and move the stem
closing cap in abutment with the clamp.
- Tighten the clamp screws to the prescribed torque.
Locking torques (N*m)
Fork clamp screws 20 ÷ 25
- Grease the tapered bearing using the specified
product.
Recommended products
AGIP GREASE PV2 Grease for the steering
bearings, pin seats and swinging arm
White anhydrous-calcium based grease to protect
roller bearings; temperature range between -20 C
and +120 C; NLGI 2; ISO-L-XBCIB2.
- Insert the fork into the headstock.
- Insert the tapered bearing after applying the
specified product.
Recommended products
AGIP GREASE PV2 Grease for the steering
bearings, pin seats and swinging arm
White anhydrous-calcium based grease to protect
roller bearings; temperature range between -20 C
and +120 C; NLGI 2; ISO-L-XBCIB2.
- Using the special tool, tighten the first ring-nut on the steering tube to a holding torque, then tighten
completely.
SUSP - 273
Suspensions
XEVO 400ie
Locking torques (N*m)
Holding torque of lower ring nut 20 ÷ 25
- Tighten to the prescribed torque.
Locking torques (N*m)
Steering lower ring nut 10 - 13 **
- Install the space washer.
- Using the special tool, tighten the second locking ring nut on the steering tube to the prescribed torque.
Locking torques (N*m)
Upper steering ring nut 36 - 39
- Install the handlebars on the steering tube, paying attention to the centring, aligning the recess on
the handlebar with that on the steering tube as
shown in the figure.
- Tighten the handlebar fixing screw on the steering tube to the prescribed torque.
- Install the front and rear handlebar covers as described in the section "Scooter body".
- Install the front mudguard
- Install the front wheel.
- Install the front brake callipers.
- Tighten the retaining screws of the brake calliper to the support.
Specific tooling
020055Y Wrench for steering tube ring nut
Locking torques (N*m)
Fixing screw handlebar to steering tube 45 ÷ 50 Holding torque of lower ring nut 20 ÷ 25 Upper
steering ring nut 36 - 39 Steering lower ring nut 10 - 13 ** Front brake calliper mounting on
fork 20 ÷ 25 Front brake disc mounting 11 ÷ 13 Plastic protection retaining screw 5 - 6
Steering bearing
Removal
Service of tapered bearing on fork
- Check that the tapered bearing on the fork exhibits no deformations or wear.
THE BEARING SHOULD BE REMOVED ONLY IF STRICTLY NECESSARY.
SUSP - 274
XEVO 400ie
Suspensions
In case of replacement, proceed as follows:
- Support the fork in a vice.
- Insert the contrast plate in the upper end of the
steering tube
- Insert the special tool as shown in the figure.
- Insert the retaining band of the two half-rings.
- Using a 19 mm hexagonal spanner, extract the
roller bearing.
Specific tooling
020458Y Puller for lower bearing on steering
tube
SUSP - 275
Suspensions
Refitting
Reassembly of tapered bearing in steering
tube
- Insert the a new plate and a new dust guard in
the steering tube
- Insert the a new tapered bearing in the steering
tube
- Using the special tool and a mallet to move the
dust guard and the bearing in abutment.
Specific tooling
006029Y Punch for fitting fifth wheel seat on
steering tube
Reassembly of steering tapered bearing seats
Using the special tool, reassemble the tapered
bearing housings on the head as described below:
- Place a new top housing on the head and a new
bearing seat on the bottom side.
- Insert the screw of the special tool set-up with the
adapters for inserting bearing and seat, into the
steering head, as shown in the figure.
- Using two 24 mm wrenches, tighten the screw to
move the two seats in abutment.
N.B.
ALWAYS USE A NEW BEARING AND A NEW SEAT.
Specific tooling
001330Y Tool for fitting steering seats
Rear
SUSP - 276
XEVO 400ie
XEVO 400ie
Suspensions
Removing the rear wheel
Remove the full muffler assembly.
- Remove the screw fixing the right-hand shock
absorber to the bracket
- Remove the cotter pin, the cap, the wheel axle
fixing nut and the outer one of the two spacers.
- Remove the two screws fixing the bracket to the
engine
- Remove the two screws fixing the stand to the
bracket
- Slide off the wheel axle bracket, using the heat gun if necessary.
SUSP - 277
Suspensions
Refitting the rear wheel
To fit, follow the removal steps but in the reverse
sequence, being careful to fit the spacers on the
wheel axle as shown in the picture.
Locking torques (N*m)
Muffler arm clamping screws 27 ÷ 30 Rear wheel
axle nut 104 ÷ 126 Shock absorber-crankcase attachment bracket 20 ÷ 25 Lower shock absorber
clamping screw 33 ÷ 41 Nm Rear brake calliper
fixing screws 25 ÷ 30 Nm
Swing-arm
The scooter features a rigid engine-chassis retainer called Direct-link.
The system comprises the following components:
A= Left spacer
B= RHS engine support bearing
C= Central spacer
D= Right spacer
E= LHS engine support bearing
F = Chassis
Removal
- Support the engine adequately.
- Remove the pin anchoring the engine to the
chassis.
- Move the engine backwards to take out spacers
- Remove the left spacer highlighted in the figure.
SUSP - 278
XEVO 400ie
XEVO 400ie
Suspensions
- Remove the central and the right spacer.
- To refit, follow the removal operations but in reverse order, being careful to observe the original
torque and to lubricate the sliding area «A» of the
right spacer on the engine bearing.
Locking torques (N*m)
Engine - chassis fixing pin 100 - 120
Two types of engine fixing pins, without distinction, have been fitted on the scooter:
- 17-mm flanged-head pin.
- 22-mm head pin and washer.
Shock absorbers
Removal
Proceed as follows:
- place the vehicle on its centre stand;
- lift the engine a little with a jack so as to free the
two shock absorbers;
- remove the muffler
- undo the shock absorber spring assembly clamping screw from the support fixed to the engine on
the one side and from that fixed to the muffler on
the other;
- unscrew the two upper nuts (one on each side)
fixing the shock absorber spring assembly to the
frame and remove the shock absorbers.
SUSP - 279
Suspensions
XEVO 400ie
Centre-stand
- Use a jack to support the vehicle properly.
- Remove the two stand return springs.
- Working from both sides, unscrew the two bolts
connecting it to the supporting plate.
- To refit, follow the removal steps but in reverse order; be careful to tighten to the prescribed torque.
Locking torques (N*m)
Centre stand bolt 31 ÷ 39
SUSP - 280
XEVO 400ie
Suspensions
Side stand
- Unhook the springs.
- Loosen the nut.
- Pull out the screw.
Fitting
Carry out the previous operations but in reverse
order.
Locking torques (N*m)
Side stand clamp 15 ÷ 20
SUSP - 281
INDEX OF TOPICS
BRAKING SYSTEM
BRAK SYS
XEVO 400ie
Braking system
Rear brake calliper
Removal
- Rest the scooter on its centre stand and adequately support the rear part of the scooter.
- Remove the wheel.
- Unscrew the air filter to the crankcase retainers.
- Unscrew the left shock absorber lower retainer.
- Release the screws from the safety washers and
unscrew the crankcase fixing screws indicated.
- Remove the calliper together with its supporting bracket.
N.B.
SHOULD THE BRAKE CALLIPER BE REPLACED, BEFORE REMOVING THE FITTINGS FIXING
THE CALLIPER TO THE SUPPORTING BRACKET, FIRST LOOSEN THE OIL HOSE FITTING AFTER HAVING EMPTIED THE SYSTEM OF THE CIRCUIT BEING INSPECTED.
Refitting
To fit the calliper, follow the above operations but in reverse order.
Locking torques (N*m)
Rear brake calliper fixing screws 20 ÷ 25 Rear brake calliper-pipe fitting 20 ÷ 25 Rear shock
absorber retainer to the chassis 38 - 46
Front brake calliper
Removal
- Remove the two retainers fastening the front
brake calliper to the support as shown in the photograph.
N.B.
SHOULD IT BE NECESSARY TO REPLACE THE CALLIPER, FIRST LOOSEN THE FITTING CONNECTING THE PIPE
TO THE BRAKE CALLIPER.
- Repeat the same operations for the other front calliper.
BRAK SYS - 283
Braking system
XEVO 400ie
Refitting
- Fit the fixed plate being careful to grease the
guide «A» and to insert washer «B» correctly as
indicated in the photo.
- Hold the pads in the correct position and insert the calliper in the brake disc.
- Fix the calliper to the support by means of the two screws to the prescribed torque.
- Lock the pipe joint to the calliper to the prescribed torque.
- Purge the system.
Locking torques (N*m)
Front brake calliper mounting on fork 20 ÷ 25 Pipe / brake calliper coupling 20 ÷ 25
Rear brake disc
Removal
- Remove the rear brake calliper
- Remove the brake disc with hub from the wheel
axle.
- To remove the brake disc from the hub, support
the unit in a vice and tighten the 5 fastening bolts
with self-locking nuts.
BRAK SYS - 284
XEVO 400ie
Braking system
Refitting
- To reassemble the brake disc on the hub, carry
out the removal operations in the reverse order arranging the brake disc on the hub on the side
opposed the wheel keying
- Follow the direction of rotation shown by the arrow and tighten to the prescribed torque.
- Lubricate the seat of the wheel bearing shaft on
the manifold support with the recommended
grease.
N.B.
APPLYING AN EXCESSIVE QUANTITY OF GREASE MAY
IMPAIR THE BRAKE PERFORMANCE
Recommended products
AGIP GREASE PV2 Grease for the steering
bearings, pin seats and swinging arm
White anhydrous-calcium based grease to protect
roller bearings; temperature range between -20 C
and +120 C; NLGI 2; ISO-L-XBCIB2.
- Insert the hub - disc assembly in the wheel axle.
Locking torques (N*m)
Rear brake disc mounting 11 ÷ 13
Disc Inspection
- Remove the rear brake calliper
- Use a micrometer to check the disc thickness as
shown in the photograph.
Characteristic
Standard thickness:
5 +0.2-0.1 mm
Minimum thickness allowed after use:
4 mm
BRAK SYS - 285
Braking system
XEVO 400ie
- Repeat the measurement at no fewer than six
points on the disc.
- Check that the measurements do not deviate
over 0.1 mm
- Remove the front calliper.
- Place the magnetic base with the dial gauge on
the brake calliper support bracket as shown in the
photograph.
- Suitably fix the flange to the wheel axle with the original nut and spacer and a Ø 17-mm bearing
N.B.
SO AS NOT TO GET A DISTORTED READING, CAUSE THE DRIVEN PULLEY SHAFT TO TURN
IN ORDER TO ROTATE THE DISC.
Specific tooling
020335Y Magnetic support for dial gauge
Characteristic
Max. deviation allowed:
0.1 mm
- If you detect incorrect values, replace the disc. If the anomaly persists, replace the hub.
Front brake disc
Removal
- These operations are described once but apply to both brake discs.
- Remove the front wheel.
- Undo the five clamping screws shown in the photograph
Refitting
- These operations are described once but apply to both brake discs.
BRAK SYS - 286
XEVO 400ie
Braking system
For fitting, position the disc correctly using the arrow stamped on it as reference.
- Do up the screws to the prescribed torque and
apply the recommended product
N.B.
THE ARROW STAMPED ON THE DISC INDICATING THE
RUNNING DIRECTION MUST BE FITTED TOWARDS THE
OUTSIDE OF THE VEHICLE.
Recommended products
Loctite 243 Medium strength threadlock
Medium Loctite 243 threadlock
Locking torques (N*m)
Front brake disc mounting 5 ÷ 6 •
Disc Inspection
- These operations are described once but apply to both brake discs.
- Checking the disc is important; it must be perfectly clean, with no sign of rust, oil or grease or any
other dirt, and must show no signs of deep scoring.
Characteristic
New rear disc thickness
4.0 mm
Disc thickness at wear limit (front)
3.5 mm
- Using the appropriate tool, measure how much
the disc protrudes when the wheel is fitted properly. The protrusion, measured near the external
edge of the disc, must be less than 0.1 mm.
- If a value other than that prescribed is detected,
remove the front wheel and check how much the
disc protrudes. Maximum permissible out of true is
0.1 mm. If the value measured is greater, replace
the disc and repeat the check.
- If the problem persists, check and replace the
wheel hub if required.
BRAK SYS - 287
Braking system
Specific tooling
020335Y Magnetic support for dial gauge
Front brake pads
Removal
Proceed as follows:
- Remove the front brake calliper.
- Loosen the two pins shown in the figure that lock
the two pads.
- Remove the pads, being careful with the pad
spring clamp.
- Check the thickness of the friction material of the
pads.
- Replace the pads if the thickness is below the
minimum value.
- The replacement must be made with greater residual thickness if the pad has not worn evenly. A
0.5 mm thickness difference in the residual friction
material is permitted.
Characteristic
Minimum value
1.5 mm
Repeat the operation for the other calliper.
See also
Front
brake calliper
Refitting
To fit, proceed as follows:
- Insert the two pads in the callipers.
BRAK SYS - 288
XEVO 400ie
XEVO 400ie
Braking system
- Screw the two pad lock pins to the correct torque, and apply the recommended product.
- Fit the calliper on its support, tightening the two screws to the prescribed torque.
N.B.
IF IT IS NOT POSSIBLE TO CORRECTLY POSITION THE CALLIPER ON THE DISC DURING FITTING, GENTLY EXPAND THE PADS.
Recommended products
Loctite 243 Medium strength threadlock
Medium Loctite 243 threadlock
Locking torques (N*m)
Screw tightening calliper to support 24 ÷ 27 Pad fixing pin 19.6 ÷ 24.5
Rear brake pads
Removal
Proceed as follows:
- Remove the rear brake calliper
- Loosen the two pins shown in the figure that lock
the two pads.
- Remove the pads, being careful with the pad
spring clamp.
- Check the thickness of the friction material of the
pads.
- Replace the pads if the thickness is below the
minimum value.
- The replacement must be made with greater residual thickness if the pad has not worn evenly. A
0.5 mm thickness difference in the residual friction
material is permitted.
Characteristic
Minimum value
1.5 mm
Repeat the operation for the other calliper.
BRAK SYS - 289
Braking system
XEVO 400ie
See also
Front
brake calliper
Refitting
To fit, proceed as follows:
- Insert the two pads in the callipers.
- Screw the two pad lock pins to the correct torque, and apply the recommended product.
- Fit the calliper on its support, tightening the two screws to the prescribed torque.
N.B.
IF IT IS NOT POSSIBLE TO CORRECTLY POSITION THE CALLIPER ON THE DISC DURING FITTING, GENTLY EXPAND THE PADS.
Recommended products
Loctite 243 Medium strength threadlock
Medium Loctite 243 threadlock
Locking torques (N*m)
Screw tightening calliper to support 24 ÷ 27 Pad fixing pin 19.6 ÷ 24.5
Fill
Rear - combined
- Remove the rubber cap from the bleed screw.
- Insert a rubber pipe in the bleed screw to permit
the brake fluid to be recovered.
- With the left-had brake lever, load the system and
bring it up to the required pressure.
- Keeping the left-hand brake lever pulled, loosen
the bleed screw to permit the air in the system to
escape. Then tighten the bleed screw
- Repeat the operation until only brake fluid comes out of the rubber pipe.
- Remove the fluid recovery pipe and refit the rubber cap over the bleed screw.
- Top up the brake fluid to the right level in the reservoir.
If necessary, bleeding can be done using a special vacuum pump
N.B.
DURING THE BLEEDING OPERATIONS, MAKE SURE THE BRAKE FLUID DOES NOT COME INTO
CONTACT WITH THE BODYWORK SO AS NOT TO DAMAGE IT. FURTHERMORE, DURING THE
BLEEDING OPERATIONS REGARDING THE BRAKE CALLIPERS, MAKE SURE THE BRAKE
FLUID DOES NOT COME INTO CONTACT WITH THE DISC BRAKES AND WITH THE BRAKE
PADS. FAILURE TO OBSERVE THIS PRECAUTION WILL ENDANGER THE PROPER WORKING
AND EFFICIENCY OF THE BRAKING SYSTEM
Specific tooling
BRAK SYS - 290
XEVO 400ie
Braking system
020329Y Mity-Vac vacuum-operated pump
Locking torques (N*m)
System bleed calliper fitting: 12 ÷ 16 Nm
Front
- Remove the rubber hood from the bleed screw.
- Insert a rubber pipe in the bleed screw to permit
the brake fluid to be recovered.
- With the right-hand brake lever, load the system
and bring it up to the required pressure.
- Keeping the right-hand brake lever pulled, loosen
the bleed screw to purge the air. Then tighten the
bleed screw.
- Repeat the operation until only brake fluid comes out of the rubber pipe.
- Remove the fluid recovery pipe and refit the rubber cap over the bleed screw.
- Top up the brake fluid to the right level in the reservoir.
If necessary, bleeding can be done using a special vacuum pump
N.B.
DURING THE BLEEDING OPERATIONS, MAKE SURE THE BRAKE FLUID DOES NOT COME INTO
CONTACT WITH THE BODYWORK SO AS NOT TO DAMAGE IT. FURTHERMORE, DURING THE
BLEEDING OPERATIONS REGARDING THE BRAKE CALLIPERS, MAKE SURE THE BRAKE
FLUID DOES NOT COME INTO CONTACT WITH THE DISC BRAKES AND WITH THE BRAKE
PADS. FAILURE TO OBSERVE THIS PRECAUTION WILL ENDANGER THE PROPER WORKING
AND EFFICIENCY OF THE BRAKING SYSTEM
Specific tooling
020329Y Mity-Vac vacuum-operated pump
Locking torques (N*m)
System bleed calliper fitting: 12 ÷ 16 Nm
- Repeat the operation for the other brake calliper.
Brake fluid level check
- Position the vehicle on a flat surface and on the
centre stand
- Remove the brake pump cover as indicated in the
photo
BRAK SYS - 291
Braking system
XEVO 400ie
- Use the appropriate spyglass on the pump to
check the level of the brake fluid, as shown in the
photograph
- If the level is below the minimum, fill up by acting
on the two screws shown in the figure.
- Remove the gasket and fill with recommended
brake fluid until the spyglass is completely covered.
CAUTION
AVOID CONTACT OF THE BRAKE FLUID WITH YOUR
EYES, SKIN, AND CLOTHING. IN CASE OF ACCIDENTAL
CONTACT, WASH WITH WATER.
WARNING
BRAKING CIRCUIT FLUID IS HIGHLY CORROSIVE; DO
NOT LET IT COME INTO CONTACT WITH PAINTED PARTS.
WARNING
BRAKE FLUID IS HYGROSCOPIC; THAT IS, IT ABSORBS
MOISTURE FROM THE SURROUNDING AIR. IF THE LEVEL
OF MOISTURE IN THE FLUID EXCEEDS A GIVEN VALUE,
BRAKING WILL BE INEFFICIENT. THEREFORE, ALWAYS
USE FLUID FROM SEALED CONTAINERS. UNDER NORMAL DRIVING AND CLIMATIC CONDITIONS YOU SHOULD
CHANGE THIS FLUID EVERY TWO YEARS. IF BRAKES
ARE USED INTENSELY AND/OR IN HARSH CONDITIONS,
CHANGE THE FLUID MORE FREQUENTLY.
Recommended products
AGIP BRAKE 4 Brake fluid
FMVSS DOT 4 Synthetic fluid
Locking torques (N*m)
Brake pump reservoir screws 1.5 ÷ 2
Never use brake liquid in open or partially used containers.
Under standard climatic conditions, replace coolant as indicated in the scheduled maintenance table.
For refitting, carry out the removal operations but in reverse order and respect the tightening torque of
the reservoir cover screws.
Front brake pump
BRAK SYS - 292
XEVO 400ie
Braking system
Removal
- Remove the front handlebar cover.
- Drain off the braking system corresponding to the
circuit being tested.
- Remove the two fixing screws from the brake
pump to the handlebar indicated in the photograph.
- Remove the oil pipe fitting from the pump undoing
the screw indicated in the figure.
- Remove the stop light switch connector
BRAKE PUMP TECHNICAL DATA
Specification
Pump right piston diameter:
Pump left piston diameter:
Desc./Quantity
Ø 12
Ø 15
Refitting
To refit, carry out the removal operations but in reverse order, observing the specified torques.
N.B.
USE NEW COPPER GASKETS ON THE JOINTS.
CAUTION
ONCE REFITTING IS FINISHED, BLEED THE SYSTEM.
Locking torques (N*m)
Pipe / brake calliper coupling 20 ÷ 25
Rear brake pump - combined
BRAK SYS - 293
XEVO 400ie
Braking system
Removal
- Remove the front handlebar cover.
- Drain off the braking system corresponding to the
circuit being tested.
- Remove the two fixing screws from the brake
pump to the handlebar indicated in the photograph.
- Remove the oil pipe fitting from the pump undoing
the screw indicated in the figure.
- Remove the stop light switch connector
BRAKE PUMP TECHNICAL DATA
Specification
Pump right piston diameter:
Pump left piston diameter:
Desc./Quantity
Ø 12
Ø 15
Refitting
To refit, carry out the removal operations but in reverse order, observing the specified torques.
N.B.
USE NEW COPPER GASKETS ON THE JOINTS.
CAUTION
ONCE REFITTING IS FINISHED, BLEED THE SYSTEM.
Locking torques (N*m)
Pipe / brake calliper coupling 20 ÷ 25
BRAK SYS - 294
INDEX OF TOPICS
COOLING SYSTEM
COOL SYS
Cooling system
XEVO 400ie
Circuit diagram
The cooling system is a forced circulation type system, with continuous venting and air pressurisation.
Circulation takes places by a centrifugal pump driven by the countershaft.
The pump delivers the coolant to the thermal group.
The two-way thermostat support is connected in output to the head. One way is connected to the pump
and the other to the radiator (of the horizontal circulation type).
The radiator output is directly connected to the pump.
The expansion tank is connected in parallel to the radiator.
The radiator hot box is connected to the upper side of the expansion tank (in air).
The radiator cold box is connected to the lower side of the expansion tank (in the fluid).
When the engine is cold, the thermostat output to the radiator is closed, even though there is still a little
flow for de-aeration obtained by a hole into the closing plate.
In this case, the circulation into the thermal group is active to ensure an even heating.
Once the working temperature has been reached, the main circulation on radiator and expansion tank
starts.
With the small openings in the thermostat there is a flow overlapping (recirculation and main one).
When the temperature is higher, the thermostat allows excluding the recirculation to favour the main
circulation.
In this case, the flow is consistent in the expansion tank as well, and this ensures a continuous automatic
venting.
COOL SYS - 296
XEVO 400ie
Cooling system
For the system venting during the circuit filling step, there is a special union at the top of the head (see
filling rules).
To ensure cooling in case of poor dynamic ventilation, there is an electric fan controlled by the injection
system.
TECHNICAL SPECIFICATIONS
Specification
Cooling system capacity
Prescribed fluid
Sealing pressure
Desc./Quantity
1.7 l
Mixture of 50% water and 50% fluid for sealed circuits
Cap calibrated at 0.9 bar
THERMOSTAT
Specification
Type
Starts opening
Desc./Quantity
Wax-type, with deviator
82 ± 2°C
ELECTRIC VENTILATION
Specification
Type
Electric ventilation starts at
Electric ventilation stops at
Desc./Quantity
With piston
107°C
103°C
WATER PUMP
Specification
Type
Control
Desc./Quantity
Centrifugal
Coaxial at the countershaft
RADIATOR
Specification
Type
Desc./Quantity
Aluminium, with horizontal circulation
EXPANSION TANK
Specification
Calibration
Desc./Quantity
Automatic bleeding, in parallel with the radiator
Electric fan check
- Connect the injection diagnostic tester and select
the «ERRORS» function in this menu.
- Check any failures in the electric fan control circuit (see «Injection»chapter)
Specific tooling
020680Y Diagnosis Tool
COOL SYS - 297
Cooling system
XEVO 400ie
- Select the menu on the "ACTIVE DIAGNOSIS"
function and start the electric fan operation simulation (see "Injection" chapter).
- If the electric fan is certainly efficient, check the
ventilation start and stop temperatures.
- Select the «PARAMETERS» function in this
menu to display the coolant temperature.
Electric fan starts: 107°C
Electric fan stops: 103°C
- If non-conforming values are detected, replace
the injection control unit (see «Injection» Chapter).
- If the analogue instrument temperature is close
to the red zone, but the degrees indicated by the
diagnostic tester are below the electric fan start
temperature, check the temperature sensor on the
head and the relevant injection circuit (see «Injection» chapter);
N.B.
THE ELECTRIC FAN TEMPERATURE AT 107° C CAN ONLY BE MANAGED BY A SYSTEM SUPPLIED WITH A 50% MIXTURE AND PRESSURISED AT 0.9 BAR.
AVOID STARTING THE ENGINE WITHOUT PRESSURISATION SINCE IT MAY REACH THE BOILING TEMPERATURE BEFORE THE ELECTRIC FAN STARTS WORKING.
IN CASE OF AN INCREASE OF THE ELECTRIC FAN START TIME, CHECK THE THERMOSTAT
OPENING TEMPERATURE AND CHECK THAT THE COOLANT DENSITY IS CORRECT. THE OPTIMUM DENSITY IS OBTAINED WITH A 50% WATER / 50% COOLING CIRCUIT FLUID MIXTURE.
System sealing check
- Check the proper circuit sealing when it is under
pressure and at the temperature.
- For a more accurate check, wait until the system
has cooled down since small leaks may not be
visible due to evaporation
- The water pump is provided with a drainage hole
in case of leaks from the cooling system mechanical seal, or from the shaft sealing oil guard.
- If coolant or oil leaks are detected, replace the pump (see «Flywheel Cover» Chapter).
N.B.
COOL SYS - 298
XEVO 400ie
Cooling system
DO NOT USE OILS OR GREASES WHILE MOUNTING THE COOLING SYSTEM. FAILURE TO OBSERVE THIS PRECAUTION WILL IRRETRIEVABLY DEFORM THE SEALING GASKETS.
Coolant replacement
System filling instructions
- Prepare the mixture of 50% water and 50% coolant.
- Fill the system to reach a level ranging between
the MIX and MAX levels indicated in the expansion
tank filler.
- Do not close the expansion tank with the cap.
- Use a transparent hose to connect the venting
union with the expansion tank filler.
- Loosen the vent and start the engine.
- Keep it open until the air has been fully vented.
- Close the bleed screw.
- Stop the engine.
- Restore the level into the expansion tank and tighten the cap.
- Start the engine and let it warm up to reach the electric ventilation temperature.
- Stop the engine.
- Restore the level with cold engine.
CAUTION
ELECTRIC VENTILATION IS CONTROLLED BY THE TEMPERATURE MEASURED AT THE HEAD.
THE ELECTRIC VENTILATION START DOES NOT MEAN THAT THE VENTING HAS BEEN COMPLETED.
VENTING IS COMPLETE WHEN THE EXPANSION TANK TEMPERATURE RISES.
Water pump
Water pump
If noise or loss of liquid at the drain hole of the water pump is discovered, replace the flywheel cover
and the water pump as described in the "Flywheel Cover" Chapter.
Proceed to carry out a few preliminary operations as described below:
COOL SYS - 299
Cooling system
XEVO 400ie
•
Place the vehicle on its centre stand and on flat ground.
•
Remove the bodywork components as described in the "Bodywork" Chapter.
•
Remove the muffler to access the flywheel cover as described in the "Removing the Engine
from the Vehicle" Chapter.
•
Empty the cooling system, removing the hoses located on the water pump cover and the
loading cap located on the expansion tank.
CAUTION
THIS OPERATION MUST BE CARRIED OUT WHEN THE ENGINE IS COLD.
•
Remove the water pump cover shown
in the figure by loosening the 6 fastening screws.
•
Proceed to partially drain the circuit as
described in the "Engine" Chapter.
•
Once the fault has been fixed and all
components have been replaced, fill
and purge the system again.
N.B.
FOR CHANGING THE COOLANT AND BLEEDING THE
SYSTEM, SEE THE "COOLANT CHANGE" SECTION.
Characteristic
Cooling system
approx. 1.8 l
Removing the water pump cover:
- Check that the water pump cover is not deformed
or dented.
- Check that the sealing O-ring is in good working
order.
- Otherwise, replace the component.
- Correctly fit a new O-ring, do not allow it to come into contact with grease or oil.
CAUTION
FAILURE TO OBSERVE THIS PRECAUTION WILL IRRETRIEVABLY DEFORM THE O-RING.
- Refit the water pump cover and tighten the 6 fixing screws to the prescribed torque.
Locking torques (N*m)
Water pump cover screws 3 ÷ 4
See also
Engine
COOL SYS - 300
XEVO 400ie
Cooling system
Flywheel cover
Thermostat
Check
Before proceeding to disassemble, carry out a few
checks:
- Connect the diagnostic tester and select the «PARAMETERS» function (see Injection chapter).
- Start the cold engine and let it warm up.
- Manually check the moment when there is a sudden increase in temperature at the output of the
radiator cold box.
N.B.
THERE SHOULD BE A SLIGHT AND GRADUAL HEATING
CAUSED BY A SMALL PASSAGE ON THE THERMOSTAT
TO THE OFF POSITION.
Specific tooling
020680Y Diagnosis Tool
- Check the temperature read by the diagnostic
tester.
Thermostat opening starts: approx. 80°C
- If opening occurs at different temperatures,
check the thermostat.
- Remove the thermostat as described in the flywheel cover paragraph.
- Visually check that the thermostat exhibits no
mechanical faults.
- Prepare a metal container with approx. 1 litre of
water.
- Immerse the thermostat, keeping it in the centre
of the container.
- Immerse the multimeter temperature probe close
to the thermostat.
- Warm up the container using the heat gun.
- Heat the water and periodically pull the thermostat out until its opening becomes visible.
- Insert a thin copper wire between the seat and the thermostat closing plate.
- Keep the wire into position until locking up is perceived.
COOL SYS - 301
Cooling system
XEVO 400ie
- Let water and thermostat cool down.
- Progressively heat the water keeping the thermostat immersed by the wire.
- Check the opening temperature when the thermostat is released from the wire.
Opening starts temperature approx. 82° C
Specific tooling
020331Y Digital multimeter
020151Y Air heater
- Heat up until the thermostat is completely open:
N.B.
HEATING SHOULD BE GRADUAL.
N.B.
AVOID CONTACT BETWEEN THERMOSTAT AND CONTAINER FOR A CORRECT TEST PERFORMANCE.
- If incorrect values are detected, replace the thermostat.
- Repeat the filling and bleeding procedure.
diagnosis
Excessive system pressure
1 - Check the expansion tank cap efficiency.
N.B.
THE CAP IS EQUIPPED WITH A PRESSURE-RELIEF VALVE CALIBRATED AT 0.9 BAR.
There is also a valve that must allow air inlet during the cooling step.
YES go to 2 NO go to 3
2 - Check the head gasket seal (see «Thermal group and timing system» chapter)
3 - Replace the cap.
Cooling fluid consumption
1 - Check the system outer seals as described above.
YES go to 2 NO go to 3
2 - Check the head gasket seal (see «Thermal group and timing system» chapter)
- If water leaks are detected in the engine oil, inspect the pad on the head cooling circuit.
COOL SYS - 302
XEVO 400ie
Cooling system
3 - Fix any damaged seals.
Oil in the fluid
1 - Presence of oil in the coolant.
YES go to 2
2 - Check the head gasket seal (see «Thermal group and timing system» chapter)
COOL SYS - 303
INDEX OF TOPICS
CHASSIS
CHAS
XEVO 400ie
Chassis
This section is devoted to the operations that can be carried out on the vehicle bodywork.
CAUTION
WE STRONGLY RECOMMEND NOT TO CLEAN THE PAINTED PLASTIC PARTS WITH SOLVENTS
CONTAINING PETROL OR PETROL BY-PRODUCTS.
Seat
•
Raise the saddle
•
Undo the three screws fixing the plate
to the central cover and remove the
saddle.
Side fairings
- The scooter has two self-sticking mouldings placed on the side fairings.
- To replace them, remove the relevant part, clean the surface accurately and apply the new moulding.
Driving mirrors
•
Remove the joint rubber of the mirror
housing from the bottom;
•
Unscrew the two screws, then remove
the covering from the support arm;
•
Remove the 2 lower retainers fixings
the mirror to the frame.
CHAS - 305
XEVO 400ie
Chassis
Rear handlebar cover
•
- Remove the front handlebar cover
•
Undo the 3 screws fixing the rear handlebar cover and remove the cover
once the connectors of the controls
have been disconnected.
See also
Front handlebar cover
Instrument panel
•
Remove the instrument panel support
and tip it.
•
Undo the six fixing screws «A» to remove the instrument panel.
See also
Analogue
instrument panel support
Front handlebar cover
•
Undo the three screws«A» fixing the handlebar upper cover and slide it off upwards.
CHAS - 306
XEVO 400ie
•
Chassis
Undo the screw «B», then remove the
cover «C» on both sides of the handlebar.
•
Undo the two fixing screws at the bottom part.
•
Take out the cover by pulling it upwards.
Headlight assy.
•
Remove the upper cover of the headlight
•
Undo the two upper fixing screws «A»,
the lower screw «B» and remove the
headlight assembly once the connector has been removed.
CHAS - 307
XEVO 400ie
Chassis
For the front turn indicators:
•
Undo the screw «C» and remove the
plastic cover.
•
Undo the screw «D» and remove the
turn indicator once the connector has
been removed.
See also
Legshield
Flyscreen
Frame central cover
•
• Remove the saddle
•
- Remove the shield back plate
•
- Remove the side panels
•
Undo the two rear clamping screws
•
Detach the covering caps of the front
screw and remove the screws
See also
CHAS - 308
XEVO 400ie
Chassis
Handles and top side fairings
Seat
Knee-guard
Legshield
•
Remove the front headlight.
•
Remove the three upper retainers.
•
Remove the mats on the footrest.
•
Remove the ten fixing screws «A» (five
per side) on the shield back plate.
•
Remove the front mudguard.
•
Remove the six screws «B» (four per
side) fixing the shield with the radiator
grille and the spoiler.
•
Remove the shield.
See also
Front mudguard
CHAS - 309
XEVO 400ie
Chassis
Knee-guard
•
- Remove the front shield.
•
Remove the expansion tank from the
shield back plate by undoing the two
screws «A» and fix it to the small front
frame in such a way that it does not turn
over.
•
Disconnect the connectors of the
MODE button and the plug socket.
•
Undo the screw fixing the caps of the
two lower screws and remove them.
•
Remove the three fixing screws to the
frame.
•
Remove the instrument panel support.
•
Remove the shield back plate by removing the lower part.
•
To make the operation easier it might
be necessary to turn the steering alternately to right and left to free the upper
appendages.
See also
Analogue
instrument panel support
Legshield
CHAS - 310
XEVO 400ie
Chassis
Front wheel housing
•
- Remove the front shield.
•
Remove the front fork.
•
Undo the central screw fixing the wheel
house to the frame.
•
Disconnect the brake pipe to the pump
and slide it off.
See also
Legshield
Taillight assy.
- From inside the rear case, undo two screws «D» fixing the rear light.
- Disconnect the connector and remove the rear light unit.
- Central bulbs: tail lights.
- Side bulbs: stop lights.
CHAS - 311
XEVO 400ie
Chassis
- From both sides, undo the screw indicated to remove the turn indicators.
License plate light
- Remove the license plate support.
- Undo the two screws indicated to get access to
the license plate light.
Footrest
•
Remove the frame central cover.
•
Undo the four screws fixing the footrest, two of which are underneath the
mat, and remove the footrest.
•
Undo the two screws «A» on the internal side of the footrest.
•
Undo the four fixing screws «B » on the
edge of the footrest and remove the
lower cover.
The diagram illustrates what to do on the righthand footrest; follow the same procedure to remove the left-hand footrest.
CHAS - 312
XEVO 400ie
Chassis
See also
Central cover
Side fairings
- Remove the passenger grab handle.
- Remove the two upper screws «A» fixing the side
fairings.
- Remove the rear light unit, then undo the two
fairing fixing screws «B» underneath.
- From both sides, remove the turn indicators.
- Undo screw «C» underneath the turn indicator.
CHAS - 313
Chassis
- Remove the five screws «D», then slide off the
fairing by pulling it backwards to free the teeth
hooking it to the central cover.
See also
Taillight assy.
Handles and top side fairings
License plate light
License plate holder
- Remove the two side screws fixing the licence
plate support.
- Remove the rear light unit and undo the screws
indicated.
CHAS - 314
XEVO 400ie
XEVO 400ie
Chassis
- Disconnect the license plate light connector and
remove the license plate support.
See also
Helmet bay
Air filter
- Remove the left fairing.
- Undo the two screws fixing the housing to the
engine crankcase.
- Loosen the screw tightening the sleeve on the
carburettor and slide off the sleeve.
- Push the housing upwards to free it from the appendages on the crankcase and remove it.
See also
Side fairings
CHAS - 315
Chassis
Helmet bay
- Remove the side fairings;
- Remove the frame central cover;
- Remove the saddle opening receiver from its
support by undoing the two screws «A» on the left
fairing;
- Undo the four screws fixing the frame upper pipe
and remove it once the boot light connector has
been removed.
- Open the glove box flap;
- Undo the 2 screws two on the bottom of the helmet compartment.
- Undo the 2 screws located in the front part of the
helmet compartment.
CHAS - 316
XEVO 400ie
XEVO 400ie
Chassis
- Undo the 4 screws (2 per side) on the sides of
the helmet compartment.
- Raise the helmet compartment as much as possible;
- Disconnect the electrical connection of the two
light buttons;
- Remove the glove box flap hook;
- Remove the saddle hook;
- Disconnect the spark plug HV wire.
- Pull the right and left fuse box out downwards
freeing the tooth with a screwdriver from above;
- Slide off the battery positive and negative leads
and the diagnostics socket from the side slots.
See also
Frame central cover
Side fairings
Fuel tank
- Remove the central chassis cover.
- Remove the footrest.
- Disconnect the electric wiring and the fuel pipes.
- Remove the three tank retainers.
CHAS - 317
XEVO 400ie
Chassis
See also
Footrest
Front mudguard
•
Remove the four fixing screws
«A» (two per side) on the mudguard
internal side.
CHAS - 318
XEVO 400ie
Chassis
Top-case
Rear
- Open the case;
- Undo the four screws «A» to remove the case
cover;
- Undo the eight screws «B» to remove the plastic
cover;
In order to remove the case support:
- Remove the side fairings;
- Remove the frame upper pipe;
- Undo the ten screws «C» (five per side) fixing the
helmet compartment;
- First slide off the rubber rim and then remove the
upper cover;
- Undo the four screws «D» (two per side) on the
lower part of the case support;
- Pull up the case support to remove it.
See also
Side fairings
Helmet bay
CHAS - 319
XEVO 400ie
Chassis
Handles and top side fairings
•
Remove the passenger grab handle by
undoing the two upper screws «A» and
the two lower screws «B» in the helmet
compartment.
Flyscreen
•
Remove the rear-view mirrors;
•
Undo the four fixing screws «A» and
the screw «B», then take out the cover.
•
Remove the four screws «C» fixing the
windshield;
•
Remove the windshield being careful
to collect the washers supporting the
rubber support blocks.
See also
Driving
CHAS - 320
XEVO 400ie
Chassis
mirrors
Analogue instrument panel support
•
Remove the windshield;
•
- Remove the front shield.
•
Undo the two front screws.
•
Undo the two screws «A» at the side of
the handlebar cover and the two
screws «B» on the upper part of the
shield back plate;
•
Detach the cover from the front frame;
•
Remove the two instrument panel connectors;
•
Remove the entire assembly.
See also
Legshield
Flyscreen
CHAS - 321
INDEX OF TOPICS
PRE-DELIVERY
PRE DE
XEVO 400ie
Pre-delivery
Carry out the listed tests before delivering the vehicle.
WARNING
BE VERY CAREFUL WHEN HANDLING FUEL.
Aesthetic inspection
Appearance check:
- Paintwork
- Fitting of plastics
- Scratches
- Dirt
Tightening torques inspection
Lock check
- Safety locks
SAFETY LOCKS
Name
Upper shock absorber clamp
Lower shock absorber clamp
Front wheel axle
Rear wheel axle
Rear brake disc mounting
Engine - chassis fixing pin
Fixing screw handlebar to steering tube
Upper steering ring nut
Steering lower ring nut
Torque in Nm
33 ÷ 41
33 ÷ 41
45 ÷ 50
104 ÷ 126
11 ÷ 13
100 - 120
45 ÷ 50
36 - 39
10 - 13 **
** tighten and loosen by 90°
- Cover retaining screws
Electrical system
Electrical System:
- Main switch
- Headlamps: high beams, low beams, side/taillights (front and rear) and relevant warning lights
- Adjusting the headlights according to the regulations currently in force
- Front and rear stop light buttons and bulb
- Turn indicators and their warning lights
- Instrument lighting
- Instrument panel: fuel and temperature indicator
- Instrument panel warning lights
- Horn
- Electric start-up
- Engine stop by emergency stop switch and side stand
PRE DE - 323
Pre-delivery
XEVO 400ie
- Saddle electric opening button
CAUTION
TO ENSURE MAXIMUM PERFORMANCE, THE BATTERY MUST BE CHARGED BEFORE USE.
INADEQUATE CHARGING OF THE BATTERY WITH A LOW LEVEL OF ELECTROLYTE BEFORE
IT IS FIRST USED SHORTENS THE LIFE OF THE BATTERY.
CAUTION
WHEN INSTALLING THE BATTERY, CONNECT THE POSITIVE CABLE BEFORE CONNECTING
THE NEGATIVE ONE, AND PERFORM THE REVERSE OPERATION UPON REMOVAL.
WARNING
BATTERY ELECTROLYTE IS TOXIC AND IT MAY CAUSE SERIOUS BURNS. IT CONTAINS SULPHURIC ACID. AVOID CONTACT WITH YOUR EYES, SKIN AND CLOTHING.
IN CASE OF CONTACT WITH YOUR EYES OR SKIN, RINSE WITH ABUNDANT WATER FOR
ABOUT 15 MINUTES AND SEEK IMMEDIATE MEDICAL ATTENTION.
IF IT ACCIDENTALLY SWALLOWED, IMMEDIATELY DRINK LARGE QUANTITIES OF WATER OR
VEGETABLE OIL. SEEK IMMEDIATE MEDICAL ATTENTION.
BATTERIES PRODUCE EXPLOSIVE GASES; KEEP THEM AWAY FROM NAKED FLAMES,
SPARKS AND CIGARETTES. IF THE BATTERY IS CHARGED IN A CLOSED PLACE, TAKE CARE
TO ENSURE ADEQUATE VENTILATION. ALWAYS PROTECT YOUR EYES WHEN WORKING
CLOSE TO BATTERIES.
KEEP OUT OF THE REACH OF CHILDREN
CAUTION
NEVER USE FUSES WITH A CAPACITY HIGHER THAN THE RECOMMENDED CAPACITY. USING
A FUSE OF UNSUITABLE RATING MAY SERIOUSLY DAMAGE THE VEHICLE OR EVEN CAUSE
A FIRE.
Levels check
Level check:
- Hydraulic brake system liquid level.
- Rear hub oil level
- Engine coolant level
- Engine oil level
Road test
Test ride
- Cold start
- Instrument operations
- Response to the throttle control
- Stability on acceleration and braking
- Rear and front brake efficiency
- Rear and front suspension efficiency
- Abnormal noise
Static test
Static test after test ride:
PRE DE - 324
XEVO 400ie
Pre-delivery
- Restarting when warmed up
- Starter operation
- Minimum hold (turning the handlebar)
- Uniform turning of the steering
- Possible leaks
- Operation of the radiator electric fan
Functional inspection
Operating test:
- Hydraulic brake system
- Lever travel
- Clutch - Check for correct operation
- Engine - Check for correct general operation and make sure there is no unusual noise
- Other
- Check documents:
- Check the frame and engine numbers
- Check tool kit
- License plate fitting
- Check locks
- Check tyre pressures
- Installation of mirrors and any accessories
CAUTION
NEVER EXCEED THE RECOMMENDED INFLATION PRESSURES OR TYRES MAY BURST.
CAUTION
CHECK AND ADJUST TYRE PRESSURE WITH TYRES AT AMBIENT TEMPERATURE.
PRE DE - 325
INDEX OF TOPICS
TIME
TIME
XEVO 400ie
Time
This section is devoted to the time necessary to carry out repairs.
For each operation, the description, code and time envisages are specified.
Engine
ENGINE
1
Code
001001
Action
Engine to chassis - Replacement
Duration
TIME - 327
XEVO 400ie
Time
Crankcase
CRANKCASE
1
2
3
TIME - 328
Code
001100
001133
001153
Action
Oil seal, clutch side - Replacement
Engine crankcase - Replacement
Crankcase half gasket - Replacement
Duration
XEVO 400ie
Time
Crankshaft
CRANKSHAFT
1
2
Code
001117
001098
Action
Crankshaft - Replacement
Countershaft - Replacement
Duration
TIME - 329
XEVO 400ie
Time
Cylinder assy.
CYLINDER ASSEMBLY
1
2
3
TIME - 330
Code
001002
001154
001129
Action
Cylinder / Piston - Replacement
Pistonsrings-pin assembly - Service
Chain tensioner - Service and Replacement
Duration
XEVO 400ie
Time
Cylinder head assy.
HEAD UNIT
1
2
3
4
5
Code
001045
001049
001056
001126
832541
6
7
8
005116
007012
001057
Action
Valves - Replacement
Valves - Adjustments
Head gasket - Replacement
Head - Replacement
Water temperature sensor - Replacement
Rpm timing sensor - Replacement
Coolant bleed valve - Replacement
Thermostat - Replacement
Duration
TIME - 331
XEVO 400ie
Time
Rocker arms support assy.
ROCKING LEVER SUPPORT UNIT
1
2
TIME - 332
Code
001044
001148
Action
Camshaft - Replacement
Valve rocking levers - Replacement
Duration
XEVO 400ie
Time
Cylinder head cover
HEAD COVER
1
2
3
Code
001089
001093
001088
Action
Head cover - Replacement
Spark plug - Replacement
Head cover gasket - Replacement
Duration
TIME - 333
XEVO 400ie
Time
Flywheel cover
FLYWHEEL COVER
1
2
3
4
5
6
Code
001087
001113
001123
001124
001150
001160
7
8
001102
003064
TIME - 334
Action
Flywheel cover - Replacement
Water pump - Replacement
Oil filter -Replacement
By-pass valve - Replacement
Flywheel cover gasket - change
Minimum oil pressure sensor - Replacement
Net oil filter - change / Cleaning
Engine oil - change
Duration
XEVO 400ie
Time
Driven pulley
DRIVEN PULLEY
1
2
3
4
Code
001022
001012
001110
001155
Action
Clutch - Replacement
Driven pulley - Overhaul
Driven pulley - Replacement
Clutch bell housing - Replacement
Duration
TIME - 335
XEVO 400ie
Time
Oil pump
OIL PUMP
1
2
3
4
TIME - 336
Code
001042
001051
001112
001125
Action
Oil pump - overhaul
Belt/ Timing chain - Replacement
Oil pump - change
Chain guide pads - Replacement
Duration
XEVO 400ie
Time
Final gear assy.
FINAL REDUCTION GEAR ASSEMBLY
1
2
Code
001010
001156
3
4
003065
004125
Action
Geared reduction unit - Service
Gear reduction unit cover - Replacement
Gear box oil - Replacement
Rear wheel axle - Replacement
Duration
TIME - 337
XEVO 400ie
Time
Driving pulley
REAR-VIEW
1
2
3
4
Code
001086
001011
001006
001141
5
6
001066
001177
TIME - 338
PULLEY
Action
Driving half-pulley - Replacement
Driving belt - Replacement
Driving pulley - Service
Belt anti-flapping roller - Replacement
rear-view pulley - Replacement
Variator rollers / shoes - Replacement
Duration
XEVO 400ie
Time
Transmission cover
TRANSMISSION COVER
1
Code
001065
2
001096
3
001131
4
001135
5
001170
Action
Internal transmission cover - Replacement
External transmission cover - Replacement
Transmission air intake - Replacement
Transmission cover bearing - Replacement
Air manifold - replacement
Duration
TIME - 339
XEVO 400ie
Time
Flywheel magneto
MAGNETO FLYWHEEL
1
2
3
4
TIME - 340
Code
001173
001067
001058
001104
Action
Rotor - Replacement
Stator - Replacement
Flywheel - Replacement
Start-up freewheel - Replacement
Duration
XEVO 400ie
Time
Butterfly valve
THROTTLE BODY
1
2
3
4
Code
001013
001047
001166
001171
Action
Intake manifold - Replacement
Injector - Replacement
Throttle body - Replacement
Throttle body - Service/cleaning
Duration
TIME - 341
XEVO 400ie
Time
Exhaust pipe
MUFFLER
1
2
3
4
5
TIME - 342
Code
001009
001092
001095
004169
005138
Action
Muffler - Replacement
Exhaust manifold - Replacement
Muffler guard - Replacement
Muffler guard - Replacement
Lambda probe - Replacement
Duration
XEVO 400ie
Time
Air cleaner
AIR CLEANER
1
2
3
Code
001015
001014
004122
4
001027
Action
Air filter box - Replacement
Air filter - Replacement / cleaning
Cleaner / Throttle body union - Replacement
Body / air cleaner union - Replacement
Duration
TIME - 343
XEVO 400ie
Time
Frame
CHASSIS
1
2
3
Code
004001
004146
004147
4
004148
5
004116
TIME - 344
Action
Frame - Replacement
Front frame - Replacement
footboard support bracket one side Replacement
Footrest support bracket, both sides
- Replacement
Rear frame - Replacement
Duration
XEVO 400ie
Time
Centre-stand
SIDE/CENTRAL STAND
1
2
3
Code
004004
004102
005079
Action
Stand - Replacement
Side stand - Replacement
Side stand switch - Replacement
Duration
TIME - 345
XEVO 400ie
Time
Legshield spoiler
FRONT SHIELD
1
2
TIME - 346
Code
004020
004064
Action
Headlight frame - Replacement
Legshield - Replacement
Duration
XEVO 400ie
Time
Rear cover
SHIELD BACK PLATE
1
2
Code
004065
004156
3
4
004145
007024
Action
Shield back plate - Replacement
Glove box flap and/or support - Replacement
Glove box - Replacement
Expansion tank cap - Replacement
Duration
TIME - 347
XEVO 400ie
Time
Central cover
CENTRAL COVER
1
2
3
4
Code
004135
004011
004075
004059
5
004015
TIME - 348
Action
Fuel tank lid - Replacement
Frame central cover - Replacement
Front mat - Replacement
Spark plug inspection flap - Replacement
Footrest - Replacement
Duration
XEVO 400ie
Time
Mudguard
MUDGUARDS
1
2
Code
004002
004167
Action
Front mudguard - change
Grille / radiator cover - Replacement
Duration
TIME - 349
XEVO 400ie
Time
Fuel tank
FUEL TANK
1
2
3
TIME - 350
Code
004005
005010
004109
Action
Fuel tank - Replacement
Tank float - Replacement
Fuel tank breather - change
Duration
XEVO 400ie
Time
Handlebar covers
HANDLEBAR COVERS
1
Code
004018
2
004019
3
4
5
004099
004026
003043
Action
Front handlebar covers - Replacement
Rear handlebar covers - Replacement
Odometer housing - Replacement
Handlebar cover - Replacement
Steering tube dust guard - Replacement
Duration
TIME - 351
XEVO 400ie
Time
Handlebar components
HANDLEBAR COMPONENTS
1
2
Code
003001
002063
3
003061
4
5
003059
004162
6
7
8
9
10
11
002024
002067
002037
002071
002059
002060
TIME - 352
Action
Handlebar - Replacement
Complete throttle transmission - Replacement
Accelerator transmission - Adjustment
Counterweight - Replacement
Mirror support and/or brake pump fitting U-bolt - Replacement
Front brake pump - Replacement
Rear brake pump - Replacement
Brake lever - Replacement
Left knob - Replacement
Right-hand knob - Replacement
Complete throttle control - Replacement
Duration
XEVO 400ie
Time
Swing-arm
SWINGING ARM
1
Code
003081
2
3
004058
001072
Action
Swinging arm support flange - Replacement
Silent block - Replacement
Engine/frame swinging arm attachment - Replacement
Duration
TIME - 353
XEVO 400ie
Time
Seat
SADDLE
1
2
TIME - 354
Code
004003
004068
Action
Saddle - Replacement
Passenger handgrip - Replacement
Duration
XEVO 400ie
Time
Locks
LOCKS + LOCK TRANSMISSIONS
1
2
Code
004010
005146
3
005133
4
5
6
004054
004173
004158
7
8
004172
005072
Action
Anti-theft lock - Replacement
Electric saddle opening activator Replacement
Electric glove box activator - Replacement
Saddle lock catch - Replacement
Trunk opening splitter - Replacement
Saddle opening splitter - Replacement
Rear case lock catch - Replacement
Immobilizer aerial - Replacement
Duration
Turn signal lights
Rear lights
TIME - 355
XEVO 400ie
Time
REAR LIGHTS
1
2
3
Code
005005
005048
005031
4
005032
5
005022
6
7
005066
005068
8
005030
Front lights
TIME - 356
Action
Taillight - change
number plate holder - Replacement
number plate light bulb - Replacement
number plate light glass - Replacement
Rear turning indicators - Replacement
Rear light bulbs - Replacement
Rear turning indicator bulb - Replacement
Rear headlight cable unit- Replacement
Duration
XEVO 400ie
Time
TURN INDICATOR LIGHTS
1
2
3
4
Code
005002
005008
005044
005012
5
005067
6
005091
Action
Front light - replacement
Headlight bulbs - Replacement
Front lights cable unit- Replacement
Front turning indicators - Replacement
Front turning indicator bulb - replacement
Turn indicator glass - Replacement
Duration
TIME - 357
XEVO 400ie
Time
Front wheel
FRONT WHEEL
1
2
3
4
5
6
7
TIME - 358
Code
002041
003037
003038
003040
003047
003063
004123
Action
Front brake disc - Replacement
Front wheel rim - Replacement
Front wheel axle - Replacement
Front wheel bearings - Replacement
Front tyre - Replacement
Tyre pressure - Check
Front wheel - Replacement
Duration
XEVO 400ie
Time
Rear wheel
REAR WHEEL
1
2
3
4
5
6
Code
001016
001071
002070
003063
004126
002028
Action
Rear wheel - Replacement
Rear wheel rim - Replacement
Rear brake disc - Replacement
Tyre pressure - Check
Rear wheel tyre - Replacement
Rear wheel hub - Replacement
Duration
TIME - 359
XEVO 400ie
Time
Electric start
START-UP
1
2
3
TIME - 360
Code
001017
001020
001151
Action
Start-up pinion - Replacement
Starter motor - Replacement
Starter driven gearing - Replacement
Duration
XEVO 400ie
Time
Fuel pump
FUEL PUMP
1
2
3
Code
004073
004137
004138
Action
Fuel pump - Replacement
Pump/ injector pipe - Replacement
Fuel reverse pipe - Replacement
Duration
TIME - 361
XEVO 400ie
Time
Electric devices
VOLTAGE REGULATOR
1
2
3
4
5
6
TIME - 362
Code
001023
005009
001094
001069
001093
005099
Action
Injection ECU - Replacement
Voltage regulator - Replacement
Spark plug cap - Replacement
HV coil - Replacement
Spark plug - Replacement
Electric saddle opening device - Replacement
Duration
XEVO 400ie
Time
WIRE UNIT
1
Code
005030
2
3
4
5
005044
005001
005114
002051
Action
Rear headlight cable unit- Replacement
Front lights cable unit - replace
Electrical system - Replacement
Electrical system - Service
Odometer transmission assembly Replacement
Duration
TIME - 363
XEVO 400ie
Time
BATTERY-REMOTE CONTROL SWITCHES -HORN
1
2
Code
005007
005096
3
005117
4
005118
5
005011
6
005088
7
005035
8
005087
9
10
11
12
005081
005073
005003
005052
TIME - 364
Action
Battery - change
Remote control for injection components - Replacement
Electric fan remote control - Replacement
Arrows remote control - Replacement
Start-up remote control switch - Replacement
Emergency stop remote control - Replacement
Headlight remote control - Replacement
Side stand remote control - Replacement
Temperature sensor - Replacement
Immobilizer decoder - Replacement
Horn - Replacement
Fuse - Replacement
Duration
XEVO 400ie
Time
Electronic controls
ELECTRIC CONTROLS
1
Code
005006
2
3
4
5
6
005039
005040
005132
005041
005077
7
8
9
10
11
005016
004142
005085
005017
003074
12
003075
Action
Light or turning indicator switch - Replacement
Lights switch - Replacement
Horn button - Replacement
Trunk opening button - Replacement
Starter button - Replacement
Emergency stop switch - Replacement
Key switch - Replacement
electric socket - Replacement
Reset button - Replacement
Stop switch - Replacement
Handlebar right control - Replacement
Handlebar left control - Replacement
Duration
TIME - 365
XEVO 400ie
Time
Transmissions
TRANSMISSIONS
1
Code
002082
2
002092
3
002093
4
002094
TIME - 366
Action
Fuel tank door opening drive - Replacement
Transmission splitter/ hook transmission - Replacement
Top box opening transmission - Replacement
Trunk splitter/ hook transmission Replacement
Duration
XEVO 400ie
Time
Helmet bay
HELMET COMPARTMENT
1
2
Code
004016
005033
3
005026
4
005027
Action
Helmet compartment - Replacement
Glove-box light switch - Replacement
Helmet compartment light - Replacement
Helmet compartment bulb support Replacement
Duration
TIME - 367
XEVO 400ie
Time
Rear side fairings
REAR COVERS
1
2
Code
005048
005033
3
4
5
6
7
004081
004174
004080
004082
004036
TIME - 368
Action
number plate holder - Replacement
Glove-box light switch - Replacement
Top box lid - Replacement
Trunk levers - Replacement
Trunk flap support - Replacement
Top box gasket - Replacement
Frame cover - Replacement
Duration
XEVO 400ie
Time
Front suspension
FRONT SUSPENSION
1
2
3
4
5
6
Code
003051
003010
003076
003079
003048
003002
Action
Complete fork - Replacement
Front suspension - Service
Fork sheath - Replacement
Fork stem - Replacement
Fork oil seal - Replacement
Steering fifth wheels - Replacement
Duration
TIME - 369
XEVO 400ie
Time
Rear suspension
REAR SUSPENSION
1
2
3
TIME - 370
Code
003085
003007
003077
Action
Suspension strut - Replacement
Rear shock absorber - Replacement
muffler/rear shock absorber support
arm - Service
Duration
XEVO 400ie
Time
Cooling system
COOLING SYSTEM
1
2
3
4
5
Code
007002
007016
007001
007024
007019
6
007013
7
8
001052
007022
Action
Water radiator - replacement
Fan with support - Replacement
Expansion tank - Replacement
Expansion tank cap - Replacement
Connection water pump pipe / return
pipe - Replacement
Radiator expansion tank connection
pipe - change
Coolant and air bleed - Replacement
Coolant delivery pipe - Replacement
Duration
TIME - 371
XEVO 400ie
Time
Braking system
BRAKE SYSTEM
1
Code
002047
2
002020
3
002081
4
002080
5
6
7
8
9
10
11
002039
002007
003070
002002
003071
002048
002021
TIME - 372
Action
Front brake fluid and air bleeding
system - Replacement
Rear brake disc piping - Replacement
Rear brake disc piping - Replacement
Rear brake oil bleed system Change
Front brake calliper - Replacement
Front brake pads - Replacement
Front brake pads - Wear check
Rear brake pads - Replacement
Rear brake pads - Wear check
Rear calliper - Replacement
Front brake piping - Replacement
Duration
XEVO 400ie
Time
Windscreen
WINDSHIELD
1
2
Code
004101
004066
Action
Windshield - Replacement
Driving mirror - Replacement
Duration
TIME - 373
XEVO 400ie
Time
Stickers
TRANSFERS
1
TIME - 374
Code
004159
Action
Plates / Stickers - Replacement
Duration
A
Air filter: 21, 315
B
Battery: 44, 53, 58, 60, 61, 65
Brake: 283, 284, 286, 288–293
Brake fluid: 291
C
Coolant: 233, 299
E
Engine oil: 22
F
Fuel: 189, 197, 201, 317, 350, 361
Fuses: 56
H
Headlight: 29, 307
Hub oil: 20
I
Identification: 7
Immobilizer:
Instrument panel: 306, 310, 321
L
Light switch:
M
Maintenance: 7, 17
Mirrors: 305, 321
O
Oil filter: 25
S
Saddle:
Shock absorbers: 279
Spark plug: 19, 231
Stand: 281
Start-up:
T
Tank: 317, 350
Technical Data:
Transmission: 9, 32, 73, 88, 339
Turn indicators: 48
Tyres: 9
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