Yamaha TZR50 '03 Service manual

’03
TZR50
X-POWER
’03
5WX-AE1
SERVICE MANUAL
TZR50’03 / X-POWER’03
SERVICE MANUAL
© 2003 by Yamaha Motor España, S.A.
1st Edition, December 2003
All rights reserved
Any reproduction or non-authorised use of this
material
is expressly prohibited without the consent of
Yamaha Motor España, S.A.
WARNING
This manual has been issued by Yamaha Motor España, S.A., mainly for its use by Yamaha
/MBK dealers and their qualified mechanics. It is not possible to include the full training of
a mechanic in a manual, for which reason we take it for granted that the persons who use
this manual to carry out maintenance and repair work on Yamaha /MBK motorcycles basically understand mechanical concepts and procedures inherent to motorcycle repair technology. Without such knowledge, any attempts to repair or service this model may make it
inappropriate for use and/or dangerous.
Yamaha Motor España, S.A. makes a constant effort to improve all the models that it manufactures. Any significant modifications and changes which are brought into the specifications or procedures will be made known to all Authorised Yamaha/MBK dealers and will
appear, where applicable, in future editions of this manual.
TECHNICAL PUBLICATIONS
AFTER-SALES SERVICE
YAMAHA MOTOR ESPAÑA, S.A
HOW TO USE THIS MANUAL
INFORMATION OF PARTICULAR IMPORTANCE
This material is distinguished by the following annotations:
A danger symbol means: DANGER! TAKE CARE! YOUR SAFETY
IS AT RISK!
s
s WARNING
CAUTION
NOTE:
Failure to comply with a WARNING may lead to serious injuries
or death for the rider, a bystander or the person inspecting or
repairing the motorcycle.
CAUTION indicates the special precautions which have to be
taken to prevent damage to the motorcycle.
A NOTE provides key information for making procedures easier
or clearer.
MANUAL FORMAT
All the procedures included in this manual are arranged in sequential format, divided into
stages. The information presented has been grouped together in order to give the mechanic a reference that is easy to read and convenient to handle, containing exhaustive explanations of all the operations for dismantling, repair, assembly and inspection.
In this reviewed format, the condition of each faulty component is followed by an arrow,
which will in turn be followed by the operation required; for example:
• Bearing
• Pitting / Deterioration Replace
EXPLODED VIEWS
Each chapter includes exploded views, before each dismantling section, to facilitate identification of the right procedures for dismantling and assembly.
SYMBOLS ILLUSTRATED
(See the ilustration)
GEN
INFO
SPEC
Symbols to are designed as thumb tabs,
in order to show the number of the chapter
and index
INSP/
ADJ
ENG
General information
Specifications
Regular inspection and adjustments
General engine servicing
Carburation
Chassis
Electrical system
Troubleshooting - location and repair of
faults
CARB
CHAS
ELEC
TRBL
10
Symbols to 15 are used to identify the specifications appearing in the text
11
12
13
14
Filling liquid
10 Lubricant
11 Special tool
12 Tightening
13 Limit of wear or clearance
14 Engine speed
15 Ω, V, A
15
Symbols 16 to 23 of the detailed diagrams
indicate the grade of lubricant and the location of the lubrication point.
16
17
18
19
20
21
22
23
NEW
16 Apply engine oil
17 Apply gearbox oil
18 Apply molybdenum bisulphide oil
19 Apply grease for wheel bearings
20 Apply lightweight lithium soap-based
grease
21 Apply molybdenum bisulphide grease
22 Apply locking agent (LOCTITE®)
23 Use a new one
INDEX
GENERAL INFORMATION
SPECIFICATIONS
REGULAR INSPECTIONS
AND ADJUSTMENTS
DISMANTLING THE ENGINE
COOLING SYSTEM
CARBURATION
CHASSIS
ELECTRICAL SYSTEM
GEN/
INFO
1
SPEC
2
INSP
ADJ
3
ENG
4
COOL
5
CARB
6
CHAS
7
ELEC
8
GEN/
INFO
1
GEN/
INFO
CHAPTER 1
GENERAL INFORMATION
IDENTIFICATION OF THE MOTORCYCLE …………………………………1-1
FRAME SERIAL NUMBER ……………………………………………………1-1
ENGINE SERIAL NUMBER……………………………………………………1-1
IMPORTANT INFORMATION …………………………………………………1-2
PREPARATION FOR REMOVAL AND DISMANTLING ……………………1-2
SPARES …………………………………………………………………………1-3
GASKETS, OIL SEALS AND O RINGS………………………………………1-3
WASHERS, LOCKING PLATES AND SPLIT PINS …………………………1-3
BEARINGS AND OIL SEALS …………………………………………………1-3
CIRCLIPS ………………………………………………………………………1-4
SPECIAL TOOLS …………………………………………………………………1-4
FOR TUNING …………………………………………………………………1-4
FOR ENGINE SERVICE ………………………………………………………1-4
FOR CHASSIS SERVICE ……………………………………………………1-7
FOR ELECTRICAL COMPONENTS …………………………………………1-8
IDENTIFICATION OF THE MOTORCYCLE
GEN/
INFO
GENERAL INFORMATION
IDENTIFICATION OF THE
MOTORCYCLE
FRAME SERIAL NUMBER
The chassis serial number is printed on the
right-hand side of the steering head.
ENGINE SERIAL NUMBER
The engine serial number is printed on the
left-hand side of the engine.
NOTE:
The first three figures of these numbers are for
identifying the model: the others are the
machine manufacturing number.
NOTE:
Design and characteristics subject to modification at no prior notice.
1-1
IMPORTANT INFORMATION
GEN/
INFO
IMPORTANT INFORMATION
PREPARATION FOR REMOVAL
AND DISMANTLING
1. Before starting removal and dismantling,
remove any dirt, mud, dust and foreign
bodies.
2. Use appropriate tools and cleaning equipment
See “SPECIAL TOOLS”
3. When dismantling the motorcycle, keep any
matching parts together. This refers to
gears, cylinders and pistons and other
items which work together and undergo the
same normal wear. Matching parts must be
assembled or replaced together.
4. As you dismantle the motorcycle, clean all
the parts and place them in trays, in the
same order in which these are dismantled.
This will cut down the time required for
assembly and will make it easier to install
them all together.
5. Keep any fire well away.
SMOKING !
1-2
CAREFUL ! NO
IMPORTANT INFORMATION
GEN/
INFO
SPARES
1. Use only original Yamaha/MBK spares for
all changes. Use the oils and /or greases
recommended by Yamaha/MBK for
assembly and adjustments. Other makes
may have the same function and appearance but nevertheless be of lower quality.
GASKETS, OIL SEALS AND O RINGS
1. When an engine is dismantled, all the gaskets, oil seals and O rings must be replaced. All the surfaces of all the gaskets and
the lips of oil seals and O rings must also be
cleaned.
2. When assembling, properly lubricate all
bearings and matching parts. Apply grease
to the lips of oil seals.
WASHERS AND LOCKING TABS AND SPLIT
PINS
1. All washers/locking tabs (1) and split pins
have to be replaced and when locking tabs
are removed and replaced they must be folded over the sides of the bolts or nuts, after
these have been properly tightened.
BEARINGS AND OIL SEALS
1. Install the bearings and oil seals with the
makes or manufacturer numbers facing
outwards. (This means that the printed letters should be visible). When installing oil
seals, apply a thin layer of light lithium grease to the lips. Put plenty of oil on bearings
when installing these.
Oil seal
CAUTION
Do not use compressed air to dry bearings.
This method damages the surface of these
items.
Bearing
1-3
SPECIAL TOOLS
GEN/
INFO
CIRCLIPS
1. All circlips must be carefully inspected before installing these again.
Always change the ones on the piston rods
when these are worn. Change any circlip
that has become deformed. When installing
a circlip make sure that the sharp edge is facing opposite the direction of the thrust
that this receives. See the section drawing.
Axis
SPECIAL TOOLS
For full and accurate tuning and installing the
appropriate special tools must be used. This
will prevent any damage that could arise from
using inappropriate tools or improvised techniques.
FOR TUNING
1. Comparator set
Ref. 90890-01252
This tool is used for installing the comparator
and tune the motor.
2. Digital tachometer for the engine
Ref. 90890-03113
This tool is required for determining the engine
speed in rpm.
FOR ENGINE SERVICE
1. Universal clutch holder
Ref. 90890-04086
This tool is used for immobilising the clutch
when this is loosened or when the boss locking nut is tightened.
1-4
SPECIAL TOOLS
GEN/
INFO
2. Flywheel (rotor) holding tool
Ref. 90890-01235
This tool is used when the securing screw for
the magnetic flywheel magneto has to be tightened or loosened.
3. Magnetic flywheel extractor
Ref. 90890-11031
This tool is used for dismantling the magnetic
flywheel.
4. Pin extractor
Ref. 90890-01304
This tool is used for removing the piston pin.
5. Cooling system checker
Ref. 90890-01325
This tool is required for checking the cooling
system.
6. Adapter
Ref. 90890-01352
This system is used for checking the cooling
system.
1-5
SPECIAL TOOLS
GEN/
INFO
7. Crankcase remover tool
Ref. 90890-11030
This tool is used for dismantling the crankshaft
or removing the crankcase.
8. Tools for installing the crankshaft.
Ref. 90890-01284
These tools are used for installing the crankshaft.
9. Crankcase installer
(Magnetic flywheel side)
Ref. 90890-11032
10. Seal installer
(Selector axle)
Ref. 90890-11033
11. Seal installer
(Water pump)
Ref. 90890-11034
1-6
SPECIAL TOOLS
GEN/
INFO
12. Seal installer
(Clutch lever)
Ref. 90890-11035
13. Seal installer
(Clutch side of crankshaft)
Ref. 90890-11036)
FOR CHASSIS SERVICE
1. “T” tool –––––––––––––––––––––––––––––
Ref. 90890-01326–––––––––––––––––––––
Front fork cylinder holder ––––––––––––––
Ref. 90890-01294
This tool is used to loosen and tighten the
fixing bolts for the cylinders of the front fork.
2. Front fork seal fitter (weight) –––––––––––
Ref. 90890-01367–––––––––––––––––––––
Adapter –––––––––––––––––––––––––––––
Ref. 90890-01400
These tools are used for installing the seals on
the front fork.
3. Wrench for circular nuts
Ref. 90890-01403
This tool is used for loosening and tightening
the circular steering nut.
1-7
SPECIAL TOOLS
GEN/
INFO
FOR ELECTRICAL COMPONENTS
1. Pocket tester
Ref. 90890-03112
This tester is an invaluable help for checking
the electrical system.
2. Stroboscopic lamp
Ref. 90891-03141
This tool is required for checking the ignition
advance.
OTHER TOOLS
1. Micrometer
Ref. 90896 - 03008
2. Feeler gauge
Ref. 90890-03079
1-8
SPEC
2
SPEC
CHAPTER 2
GENERAL SPECIFICATIONS
SPECIFICATIONS ………………………………………………………………2-1
GENERAL SPECIFICATIONS …………………………………………………2-1
MAINTENANCE SPECIFICATIONS ……………………………………………2-4
ENGINE …………………………………………………………………………2-4
CHASSIS ………………………………………………………………………2-7
TIGHTENING TORQUES ……………………………………………………2-9
ELECTRICAL SYSTEM ………………………………………………………2-11
GENERAL SPECIFICATIONS OF TIGHTENING TORQUES/
DEFINITION OF THE UNITS …………………………………………………2-13
LUBRICATION POINTS AND TYPE OF LUBRICANT ……………………2-14
ENGINE ………………………………………………………………………2-14
CHASSIS ………………………………………………………………………2-15
CABLE ROUTING ………………………………………………………………2-16
GENERAL SPECIFICATIONS
SPEC
SPECIFICATIONS
GENERAL SPECIFICATIONS
Model
TZR50 / X-POWER
Model code number
5WX
Frame serial number
Yamaha
MBK
UTLRA031000000001
UTLRA032000000001
Dimensions:
Total length
Total width
Total height
Height of the seat
Distance between axles
Minimum ground clearance
2007 mm
675 mm
1065 mm
815 mm
1330 mm
144 mm
Basic weight:
With oil and full fuel tank
124.2 kg.
Minimum turning radius
2900 mm
Engine:
Type of engine
Admission system
Cylinder arrangement
Cylinder capacity
Bore x stroke
Compression ratio
Starting system
Lubrication system
2 stroke, petrol, liquid cooled
Reed valve
Single cylinder, slanting forwards
49.7 cm3
40.3 x 39 mm
6.85:1
Electric
Independent lubrication
Motor oil
Type
Yamaha 2 stroke oil or oil for air-cooled 2 stroke engines
1.35 L
Capacity
Transmission oil:
Type
Capacity:
Regular oil change
Total amount
0.75 L
0.82 L
Capacity of coolant:
Including all routes
0.7 L
Air filter:
Type
Damp element
Engine oil SAE 10W30 SE type
2-1
GENERAL SPECIFICATIONS
Model
SPEC
TZR50 / X-POWER
Fuel:
Type
Capacity of the fuel tank:
Full
Reserve
Unleaded gasoline
13.8 L
2.2 L
Carburettor :
Type / Number
Manufacturer
PHBN 16 NS/1
DELLORTO
Spark plug
Type / Number
Manufacturer
Spark plug gap
BR9ES/1 piece
N.G.K.
0.6 ~ 0.7 mm
Clutch:
Type
Wet, multi disc
Transmission:
Type
Primary reduction system
Primary reduction ratio
Secondary reduction system
Secondary reduction ratio
Action
Gear reduction ratio:
1st
2nd
3rd
4th
5th
6th
6 gears constant mesh
Helical gear
71/20 (3,550)
Drive chain
47/12 (3.916)
Left foot
36/12
33/16
29/19
27/22
25/24
24/25
Chassis:
Frame type
Caster angle
Trail
(3,000)
(2,062)
(1,526)
(1,227)
(1,041)
(0,960)
Double cradle (Deltabox)
25º
92 mm
Tyres:
Type:
Dimensions:
Front
Rear
Tubeless
100/80-17 52H
130/70-17 62H
Maximum load*
183 kg.
Cold tyre pressure:
FRONT
REAR
Up to 90 kg. (198 pounds) load*
1.8 kg/cm2
2.0 kg/cm2
From 90 kg. (198 pounds) up to max. load
1.9 kg/cm2
2.3 kg/cm2
2-2
GENERAL SPECIFICATIONS
Model
SPEC
TZR50 / X-POWER
Brakes:
Type of front brake
Front brake action
Type of rear brake
Rear brake action
Single disc
Right hand
Single disc
Right foot
Suspension:
Front suspension type
Rear suspension type
Telescopic fork
Swinging arm (Monocross suspension)
Damping:
Front shock absorber
Rear shock absorber
Spiral spring / oil shock absorber
Spiral spring and gas/oil damping
Wheel travel:
Front wheel
Rear wheel
130 mm
102 mm
Electrical system
Ignition system
Charging system
C.D.I.
AC Magneto
Battery:
Type
Capacity
YT4L-BS
12V, 3A
Headlights:
Type
Dual filament bulb
Bulb voltage, wattage x quantity
Headlight
Tail and brake light
Indicators
Instrument panel light
Neutral indicator light “NEUTRAL”
“OIL” indicator
“TURN” indicator
Coolant temperature indicator
25/25W x 2
5/21Wx 1
10Wx 4
1.2W x 2
LED x 1
LED x 1
LED x 1
LED x 1
General voltage:
12V
2-3
MAINTENANCE SPECIFICATIONS
SPEC
MAINTENANCE SPECIFICATIONS
ENGINE
Model
TZR50 / X-POWER
Cylinder head:
Max. waparge
0.03 mm
* Lines indicate straightedge measurement.
Cylinder:
Bore size
40,293 ~40,312 mm
<Limit> <40.4mm>
0.05 mm
0.01 mm
Taper limit
Out of round limit
Piston:
Piston size “D”
Measurement point “*”
40.237 ~ 40.257 mm
12 mm
*
Piston to cylinder clearance
0.049 ~0.062 mm
<Limit> <0.1 mm>
40.60 mm
40.80 mm
1st oversize
2nd oversize
Rings:
Top ring
Chrome plated type
B = 1.2 mm
T = 1.6 mm
Second ring
Chromed type
B = 1.2 mm
T = 1.6 mm
End gap (installed)
Top ring
2nd ring
0.15 ~ 0.30 mm
0.15 ~ 0.30 mm
Side clearance
Upper ring
2nd ring
0.03 ~ 0.06 mm
0.03 ~ 0.06 mm
2-4
MAINTENANCE SPECIFICATIONS
Model
SPEC
TZR50 / X-POWER
Crankshaft:
Crank width “A”
41.90 ~ 42.0 mm
Runout limit “B”
0.03 mm
Small end free play “D”
0.20 ~ 0.61 mm
Big end side clearance “C”
0.015 ~0.026 mm
Clutch:
Friction plate:
Thickness
Number
Wear limit
Clutch plate:
Thickness
Number
Wear limit
Clutch spring:
Free length
Number
2.9 ~ 3.1 mm
4 pieces
2.7 mm
1.05 ~ 1.35 mm
3 pieces
0.05 mm
30.0 mm
4 pieces
Clutch release method:
Pushrod bending limit
Internal pusher, cam pusher
0.15 mm
Transmission:
Eccentricity limit of the primary shaft
Eccentricity limit of the secondary shaft
0.08 mm
0,08 mm
Selector:
Type
Drum
Air filter:
Oil type
Oil for foam filter or SAE 10W30SE
2-5
MAINTENANCE SPECIFICATIONS
Model
SPEC
TZR50 / X-POWER
Carburettor:
Identification mark
Main jet
Air screw turns
Fuel level
Float height
Idling speed
Idling jet
Starter jet
Air jet
Needle jet
Jet needle
Section
Bypass 1
Valve seat size
PHBN12HS/Dellorto
(M.J.) # 88
2-1/8
5 mm
(F.H.) 14.3 ± 0.5 mm
1850 ± 150 rpm
# 32
# 45
100
A13
210FQ
4
0.80
150
Reed valve:
Valve thickness
Valve stopper height
Valve bending limit
0.3 mm
6.28 m
0.1 ~ 0.7 mm
Lubrication system:
Autolube pump:
Piston diameter
Minimum flow at 3000 rpm
Maximum flow at 3000 rpm
Pulley adjusting wark
2.5 mm
6 cc/h
28 cc/h
By keeping the throttle twist grip closed
Cooling system:
Radiator core width
Radiator core height
Radiator core thickness
Radiator cap opening pressure
Reservoir tank capacity
Water pump type
160.0 mm
160.0 mm
32.0 mm
0.9 kg/cm2
0.71 L
Single-suction centrifugal pump
2-6
MAINTENANCE SPECIFICATIONS
SPEC
CHASSIS
Model
TZR50 / X-POWER
Steering system:
Steering type
Size of the balls (number):
Upper
Lower
Ball bearings
1/4 inch (19 units)
1/4 inch (19 units)
Front suspension:
Front fork travel
Fork free leng 515.1 mm
<Limit>
Spring rate
(K1)
(K2)
Spiring stroke (K1)
(K2)
Optional spring
Oil capacity
Oil level
130.0 mm
<508 mm>
0.4 kg/mm
0.55 kg/mm
0.0 ~ 70 mm
70 ~ 130 mm
No
254 cm3
150 mm
From the top edge of the lower tube, fully compressed, without spring.
Fork oil 10W or equivalent
Oil type
Rear suspension:
Rear shock absorber assembly travel
Spring free lenght
<Limit>
Installed lenght
Spring rate
(K1)
Spring stroke (K1)
Optional spring
102 mm
147 mm
<132> mm
134 mm
14 kg/mm
28 mm
No
Swingarm:
Limit of free play (end of the
swingarm)
1.0 mm
Move the swingarm from side to side
Front wheel:
Type
Wheel size
Wheel material
Runout limit
Vertical
Lateral
Cast
MT2.75 x 17
Aluminium
2.0 mm
2.0 mm
2-7
MAINTENANCE SPECIFICATIONS
Model
SPEC
TZR50 / X-POWER
Rear wheel:
Type
Wheel size
Wheel material
Runout limit
Vertical
Lateral
1.0 mm
1.0 mm
Drive chain:
Type / Manufacturer
Number of links
Chain slack
415H90R/Regina
133
20 ~ 25mm
Front disc brake:
Type
Thickness
Brake pad thickness
<Wear limit>
Master cylinder inside diameter
Caliper cylinder inside diameter
Recomended fluid
Single disc
280.0 x 4,0 mm
4.3 mm
<0.5mm>
12.0 mm
25.0 mm
DOT 4
Rear disc brake:
Type
Thickness
Brake pads thickness
<Wear limit>
Master cylinder inside diameter
Caliper cylinder inside diameter
Recomended fluid
Single disc
220.0 x 4,0 mm
4 mm
<0.5 mm>
12.0 mm
30.0 mm
DOT 4
Cast
MT3.50 x 17
Aluminium
Front lever brake/Rear brake pedal:
Free play front lever brake
2 ~ 5 mm
At the end of the brake handle
45 mm
Under the top side of the footrest
Brake pedal free play
Clutch lever and throttle twist grip:
Clutch lever free play
Throttle cable free play
2 ~ 3 mm
2 ~ 5 mm
2-8
SPEC
MAINTENANCE SPECIFICATIONS
TIGHTENING TORQUES
Items to tighen
Spark plug
Cylinder head
Nuts
Cylinder
Bolts
Coolant draining plug
Water pump cover
Screw
Thermostat bolt
Water pump
Bolt
Carburetor joint
Screw
Crankcase (left right)
Screw
Bolt
Crankcase cover 1
Bolt
Crankcase cover 2
Bolt
Crankcase cover 3
Crankcase cover 1
Oil drain plug
Intermediate shaft
Nut
Clutch
Nut
Screw
Push rod nut
Shift pedal
Screw
Starter motor
Screw
Flywheel
Number
Thread pitch
1
M14 x 1.25
23
2.3
4
M7 x 1.0
17
1.7
4
1
M8 x 1.25
M6 x 1.0
18
5
1.8
0.5
3
2
M6 x 1.0
M4 x 0.7
5
2
0.5
0.2
2
M5 x 0.8
7
0.7
4
M6 x 1.0
10
1.0
13
4
M6 x 1.0
M7 x 1.0
10
12
1.0
1.2
5
M5 x 0.8
5
0.5
4
M6 x 1.0
10
1.0
2
1
M5 x 98
M8 x 1.25
4.5
17
0.45
1.7
1
M12 x 1.0
60
6.0
1
4
1
M12 x 1.25
M5 x 0.8
M14 x 1.25
75
4
27
7.5
0.4
2.7
1
M8 x 1.25
30
3.0
2
1
M6 x 1.0
M10 x 1.25
10
52
1.0
5.2
2-9
Tightening
torque
Nm
m•kg
Observations
SPEC
MAINTENANCE SPECIFICATIONS
TIGHTENING TORQUES
Items to tighten
Upper bracket and forks
Allen screw
Upper bracket and shaft
Steering shaft
and nut
Handlebar to forks
Handlebar to upper
bracket
Handlebar to
brake pump
Front fairing bracket
Engine to frame holder
Engine to front holder
Engine to rear holder
frame
Engine to rear frame
holder
Swing arm to frame
Shock absorber to
swingarm
Shock absorber to frame
Fuel tank cap to
fuel tank
Front wheel axle to
fork
Rear wheel axle and nut
Disc brake to
wheel
Brake caliper to bracket
Rear sprocket to wheel
Brake line
Front caliper bleed screw
Rear caliper bleed screw
Fork tightening screw
Rear brake pump and
support
Axle to support 3
2/3 support to frame
Number
Thread pitch
2
1
M8 x 1.25
M14 x 1.25
22
56
2.2
5.6
1
M25 x 1.0
6
0.6
2
M8 x 1.25
22
2.2
2
M6 x 1.0
10
1.0
2
2
2
2
M6 x 1.0
M8 x 1.25
M8 x 1.25
M8 x 1.25
10
23
25
25
1.0
2.3
2.5
2.5
Lower
1
M8 x 1.25
25
2.5
Upper
1
1
M8 x 1.25
M8 x 1.25
25
60
2.5
6.0
Lower
1
1
M8 x 1.25
M8 x 1.25
60
40
6.0
4.0
1
M6 x 1.0
6.5
0.65
1
1
M12 x 1.25
M14 x 1.25
65
90
6.5
9.0
5
2
4
1
1
1
1
M6 x 1.0
M8 x 1.25
M8 x 1.25
M10 x 1.25
M10 x 1.0
M10 x 1.0
M8 x 1.25
12
35
48
63
14
14
24
1.2
3.5
4.8
6.3
1.4
1.4
2.4
2
1
2
M10 x 1.25
M10 x 1.25
M8 x 1.25
24
36
30
2.4
3.6
3.0
2-10
Tightening
torque
Nm
m•kg
Observations
Initial 37 Nm
Loosen and
tighten
LT
LT
MAINTENANCE SPECIFICATIONS
SPEC
ELECTRICAL SYSTEM
Model
Voltage:
TZR50 / X-POWER
12 V
Ignition system
Ignition data:
Type of advance arrangement:
Ignition:
Advance:
Electronic
14º/2000 r/min
24º/2000 r/min
CDI:
Magneto model / manufacturer
Pickup resistance (color)
Charge coil resistance (color)
Lighting coil resistance (color)
MORIC 5WX
350 ± 20% Ω(WR-WL)
0.36 ± 20% Ω(W)
0.28 ± 20% Ω(YR)
Ignition coil:
Model / Manufacturer
Secondary coil resistance
MORIC 5WX
7.9 KΩ
Spark plug pipe:
Type
Resistance
Resin
5 K W at 20 ºC
2-11
MAINTENANCE SPECIFICATIONS
Model
SPEC
TZR50 / X-POWER
Charge system:
Flywheel magneto
Voltage regulator:
Model / manufacturer
SH 671 - 12/SHIN DEN GEN
Battery:
Type
MF (no maintenance)
Horn:
Type
Amount
Model/Manufacturer
Maximum amperage
Plain type
1
GH/12/NIKKO
1.5A
Flasher relay:
Model / Manufacturer
Self-cancelling device
Flashing frequency
Power in watts
0.1 - 2336/GUILERA
No
60 ~ 120 cycles per minute
10W + 16W + 1.2 W
Oil level switch:
Model / Manufacturer
21.57.057.A/PAIOLI
Temperature sensor:
Model / Manufacturer
5017520 / Anglí
Starter relay:
Model / Manufacturer
12V - 50A / Guilera
Circuit breaker:
Type
Fuse
Circuit (fuse)
MAIN
10 A
Electrical start system:
Type
Constant mesh
Starter motor:
Manufacturer
Power output
MISTUBA
0.13 KW
2-12
SPEC
CONVERSION TABLES
GENERAL CHARACTERISTICS
OF TIGHTENING TORQUES
A
(nut)
This table specifies the tightening torques for
ordinary fixings with standard ISO pitch threads. The characteristics of the tightening torques of special components or assemblies are
stated in the relevant sections of this manual.
To avoid any deformation, tighten the assemblies with several fixing points in a cross pattern and in gradual stages, until the final tightening torque is reached. Unless specified
otherwise, the characteristics of the tightening
torque refer to clean dry threads. The components must be at ambient temperature.
10
12
14
17
19
22
mm
mm
mm
mm
mm
mm
B
(bolt)
6
8
10
12
14
16
mm
mm
mm
mm
mm
mm
General characteristics
of the tightening torques
Nm
m • kg
lb•foot
6
15
30
55
85
130
0.6
1.5
3.0
5.5
8.5
13.0
A: Distance between sides
B: Outer thread diameter
Unit
Denomination
Definition
Dimension
mm
cm
Milimeter
Centimeter
10-3
10-2
kg
Kilogram
103 grams
Weight
N
Newton
1 kg x m/sec2
Force
Nm
m•kg
Newton meter
Kilogram-meter
Nxm
m x kg
Tightening torque
Tightening torque
Pa
N/mm
Pascal
Newton per milimeter
N/m2
Nmm
Pressure
Spring rating
L
cm3
Litre
Cbic centimeter
Volumen
or capacity
R/min
Revolutions per minute
Engine revolution
speed
2-13
meters
meters
Length
Length
4.3
11
22
40
61
94
SPEC
LUBRICATION POINTS AND TYPE OF LUBRICANT
LUBRICATION POINTS AND TYPE OF LUBRICANT
ENGINE
Lubrication point (name of the part)
Type of lubricant
Oil seal lips (all)
“O” rings (all)
Bearing seals
E
Crankshaft bearings (left and central)
E
Needle bearings (con rod)
G
Primary shaft bearings
G
Secondary shaft bearings
G
Thrust cam bearing
Crankshaft journals
E
Rings, pins and pistons
E
Drive shaft (water pump)
G
Shaft (mixing pump)
E
Clutch casing
G
Thrust rod
G
Thrust lever shaft
G
Sliding gear (transmission)
M
Free gear (transmission)
M
Guide bar (transmission forks)
G
Connection ball (shift pedal)
Rotation points (shift pedal)
Crankcase matching surfaces
Yamaha nº 4
adhesive
2-14
LUBRICATION POINTS AND TYPE OF LUBRICANT
SPEC
CHASSIS
Lubrication point (name of the part)
Type of lubricant
Ball bearings (steering column)
Lips of the oil seals (front and rear wheels)
Rotation points (brake pedal)
Rotation points (side stand)
Right end of handlebar
End of the throttle cable (throttle twist grip)
Rotation axle (clutch lever)
Rotation axle (brake handle)
Anchorages (rear shock)
Swingarm
Bearing (swingarm)
Front wheel axle
Rear wheel axle
Bush (front wheel)
Speedometer gear unit
2-15
SPEC
CABLE ROUTING
A Thread the horn cable through the support
CABLE ROUTING
of the air filter casing
DC-CDI
Regulator-rectifier
Battery
Starter relay
Fuse box
Horn
Flasher relay
Neutral relay
B Thread the installation through the clamps
or bridles on the frame
C Thread the left-hand switch cable through
the frame clamps
D The mark for installing the system must
coincide with the frame clamp
A
D
C
2-16
B
CABLE ROUTING
Speedometer connector
Connector for headlight and front indicator
lights
Connector for the speedometer sensor
Ground cable
Electrical installation
Tank overflow pipe
Carburettor overflow pipe
Engine breather pipe
SPEC
A Clamp the generator cable to the frame
B Clamp the neutral switch cable to the
frame
C Thread the stand and neutral cables
through the frame clamps
D Thread the following cables through the
frame clamp:
Rear brake switch
Stand switch
Neutral switch
Starter motor
E Thread the cables described in point D
plus the engine breather pipe through the
frame clamp
A
D
B
E
C
2-17
CABLE ROUTING
SPEC
A Thread the oil pipe through the frame clamps
B Clamp the starter motor cable to the frame
C Clamp the cable of the speedometer sensor through the rubber
D Clamp the main switch cable, the head of the clamp must be at the bottom
D
A
C
B
2-18
INSP
ADJ
3
INSP
ADJ
CHAPTER 3
REGULAR INSPECTION AND ADJUSTMENTS
INTRODUCTION/REGULAR MAINTENANCE/LUBRICATION ……………3-1
SIDE COVERS ……………………………………………………………………3-2
DISMANTLING …………………………………………………………………3-2
ASSEMBLY ……………………………………………………………………3-2
ENGINE ……………………………………………………………………………3-3
ADJUSTING THE IDLING SPEED ……………………………………………3-3
ADJUSTING THE AUTOLUBE PUMP CABLE ……………………………3-4
ADJUSTING THE FREE PLAY OF THE THROTTLE CABLE ……………3-5
BLEEDING THE AUTOLUBE PUMP …………………………………………3-6
ADJUSTING THE FREE PLAY OF THE STARTER CABLE ………………3-7
INSPECTING THE SPARK PLUG ……………………………………………3-7
INSPECTING THE ENGINE OIL LEVEL ……………………………………3-9
INSPECTING THE TRANSMISSION OIL LEVEL …………………………3-10
CHANGING THE TRANSMISSION OIL ……………………………………3-10
ADJUSTING THE CLUTCH …………………………………………………3-11
CLEANING THE AIR FILTER ………………………………………………3-12
INSPECTING THE CARBURETTOR GASKET ……………………………3-14
INSPECTING THE FUEL HOSES …………………………………………3-15
INSPECTING THE EXHAUST SYSTEM ……………………………………3-16
INSPECTING THE LEVEL OF THE COOLANT ……………………………3-16
CHANGING THE COOLANT LIQUID ………………………………………3-17
INSPECTING THE COOLING SYSTEM ……………………………………3-21
CHASSIS …………………………………………………………………………3-21
ADJUSTING THE REAR BRAKE ……………………………………………3-21
INSPECTING THE BRAKE LIQUID …………………………………………3-21
BLEEDING THE AIR …………………………………………………………3-22
INSPECTING THE BRAKE PADS …………………………………………3-23
ADJUSTING THE BRAKE LIGHT SWITCH ………………………………3-24
INSPECTING THE BRAKE HOSES…………………………………………3-24
ADJUSTING THE VOLTAGE OF THE TRANSMISSION CHAIN…………3-25
LUBRICATING THE TRANSMISSION CHAIN ……………………………3-27
ADJUSTING THE STEERING ………………………………………………3-27
CHANGING THE FORK OIL…………………………………………………3-29
INSPECTING THE TYRES …………………………………………………3-31
INSPECTING THE WHEELS ………………………………………………3-32
INSPECTING THE CABLES …………………………………………………3-32
LUBRICATION ………………………………………………………………3-33
ELECTRICAL SYSTEM…………………………………………………………3-34
INSPECTING THE BATTERY ………………………………………………3-34
INSPECTING THE FUSES …………………………………………………3-36
ADJUSTING THE HEADLIGHT BEAM ……………………………………3-37
CHANGING THE HEADLIGHT BULB ………………………………………3-37
INTRODUCTION/REGULAR MAINTENANCE/
LUBRICATION
INSP
ADJ
REGULAR INSPECTION AND ADJUSTMENT
INTRODUCTION
This chapter contains all the information required to carry out the recommended services and
adjustments. By following these preventive maintenance procedures you will ensure greater operating reliability for the vehicle and a longer useful life, considerably reducing the need for costly
repairs. This information is applicable to both vehicles already in service and ones that are being
prepared for sale. All service technicians should be completely familiar with this chapter.
KILOMETRE CLOCK READING
( x 1.000 km)
No
1
*
2
ITEM
CHECK OR MAINTENANCE OPERATION
Petrol line
Spark plug
1
6
12
• Check to see if the petrol hose is cracked or damaged
√
√
• Check its condition
• Clean and adjust space between electrodes
√
ANNUAL
18
24
√
CHECK
√
√
√
• Change
√
√
√
√
3
Air filter
*Clean
4
Clutch
• Check operation
• Adjust
√
√
√
√
√
5
Front brake
• Check operation, liquid level and to see if there are leaks on the vehicle
√
√
√
√
√
√
√
√
√
√
√
• Change
• Check the brake pads
6
Rear brake
Whenever these have reached the wear limit
• Check operation, liquid level and to see if there are leaks on the vehicle
√
• Check the brake pads
7
Brake tubes
√
√
√
√
Whenever these have reached the wear limit
√
*Check to see if these are cracked or damaged
• Change
√
√
Every 4 years
8
Wheels
• Check eccentricity and whether these are damaged
√
√
√
√
9
Tyres
•
•
•
•
√
√
√
√
10
Wheel bearings
• Check to see if the bearings are weak or damaged
√
√
√
√
11
Swinging arm
• Check operation and to see if play is excessive
√
√
√
√
12
Transmission chain
13
Steering bearings
Check the depth of the tread pattern and whether they are damaged
Change if necessary
Check the air pressure
Correct if necessary
• Lubricate with molybdenum bisulphide grease
Every 24,000 km
• Check the chain tension
• Check that the rear wheel is properly aligned
• Clean and grease
Every 500 km and after washing
the motorcycle or using in rain
√
• Check the bearing play and to see if the steering is stiff
√
• Lubricate with lithium soap-based grease
√
√
√
√
Every 24,000 km
√
√
√
√
√
√
• Check operation and whether oil is leaking
√
√
√
√
Shock absorber assembly
• Check operation and to see if the shock absorber is leaking oil
√
√
√
√
Carburettor
• Check the choke operation
• Adjust the engine idling speed
√
√
√
√
√
√
20
Autolube pump
• Check operation
• Bleed if necessary
√
√
√
21
Transmission oil
• Check the oil level
√
√
√
• Change
√
• Check the coolant level and to see if there are leaks from the vehicle
√
14
Chassis fixings
• Check that all the nuts, bolts and screws are properly tightened
15
Side stand
• Check operation
• Grease
16
Stand switch
• Check operation
17
Front fork
18
19
22
Cooling system
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
• Change
√
√
√
Every 3 years
23
Brake switches
• Check operation
√
√
√
√
√
24
Moving parts and cables
• Grease
√
√
√
√
√
√
25
Throttle twist grip box
• Check operation and play
• Adjust the throttle cable play and to see if this is precise
• Grease the throttle twist grip box and cable
√
√
√
√
√
26
Lights, signals and switches
• Check operation
• Adjust the headlight beam
√
√
√
√
√
√
* We recommend these articles being serviced by an authorised Yamaha/MBK distributor.
** Apply medium weight bearing oil
NOTE:
•
•
••
••
••
The air filter requires more frequent servicing when the vehicle is used in particularly wet or dusty areas.
Hydraulic brake servicing
Regularly check the brake liquid level and correct this as necessary
Every two years change the internal components of the brake pump and calliper, as well as the brake liquid
Change the brake tubes every four years and whenever these are cracked or damaged.
3-1
SIDE COVERS
INSP
ADJ
SIDE COVERS
DISMANTLING
1. Take off:
• The seat
NOTE:
To open the seat lock, insert the key into this
and turn clockwise
2. Dismantle:
• The grip strap
3. Remove:
• Screws that secure each side cover and
take these out
4. Release:
• The seat locking cable
ASSEMBLY
Follow the same procedure as in “DISMANTLING” but inversely. Observe the following
points:
1. Install:
• The side covers (left and right-hand
side), and tighten the screws.
• The seat locking cable
2. Install:
• The seat
NOTE:
Insert the projection of the seat into the recess
made in the chassis for this purpose and press
the seat downwards.
3-2
ADJUSTING THE IDLING SPEED
INSP
ADJ
ADJUSTING THE IDLING SPEED
1. Tighten
• The air screw Tighten the screw until it gently abuts the
end of its travel
2. Loosen:
• The air screw Partly unscrew this from its slightly abutting position
Turns the screw should be loosened:
2 1/8 turns
3. Start the engine up and let this warm up.
4. Connect:
• The engine tachometer
to the spark plug cable
Engine tachometer:
90890-03113
5. Check:
• The engine idling speed
Out of specification Adjust
Engine idling speed:
TZR50
1700 ~ 2000 r/min
3-3
ADJUSTING THE AUTOLUBE PUMP CABLE
INSP
ADJ
ADJUSTING THE AUTOLUBE PUMP
CABLE
NOTE:
Before adjusting the automatic mixture pump
cable, you must first adjust the free play of the
throttle cable.
1. Remove:
• Cowlings
See the section on “FAIRING”, “DISMANTLING”
• The oil pump cover
2. Adjust:
• The throttle cable
3. Check:
• The free play while keeping the throttle in
the idle position.
This is not adjusted Adjust the pump
cable
4. Adjust:
• The pump cable
Stages in the Adjustment:
• Loosen the locknut • Tighten or loosen the tensor until
getting the minimum play in operation
• Tighten the locknut
5. Check:
• Adjust the cable of the lubrication pump
3-4
ADJUST THE FREE PLAY OF THE THROTTLE CABLE
INSP
ADJ
6. Adjust:
• The engine idling speed .
ADJUSTING THE FREE PLAY OF THE
THROTTLE CABLE
1. Check:
• The free play (a) of the throttle cable
Out of specification Adjust
Free play of throttle cable:
2 ~ 5 mm
a
2. Adjust:
• Throttle cable free play
Adjustment steps:
• Loosen the locknut • Loosen or tighten the tensor until you
get the right free play
Tighten
Loosen
Increases the free play
Reduces the free play
• Loosen the locknut
3-5
BLEEDING THE AUTOLUBE PUMP
INSP
ADJ
BLEEDING THE AUTOLUBE PUMP
NOTE:
The automatic mixing pump and its hoses
must be bled in the following cases:
• When taking a new motorcycle out of its packaging.
• Whenever the oil tank is completely emptied
• Whenever any part of the engine oil supply
system is disconnected.
1. Remove:
• The oil pump cover
2. Bleed the air:
• From the pump casing and/or the oil
hose
Bleeding air steps:
• Loosen the bleeding screw • Start the engine up
• Let the oil out until the air bubbles disappear
• After the air bubbles have been completely removed, tighten the bleeding screw
• Stop the engine
NOTE:
Check the O ring of the bleeding screw and
if any damage can be seen, change it for a
new one
3. Install:
• The oil pump cover
Screw (Autolube pump cover):
0.4 kg • m
3-6
ADJUSTING THE FREE PLAY OF THE CHOKE CABLE /
INSPECTING THE SPARK PLUG
INSP
ADJ
ADJUSTING THE FREE PLAY OF THE
CHOKE CABLE / INSPECTING THE SPARK
PLUG
1. Check
• Free play of the choke cable Out of specification Adjust
Free play:
1.5 ~ 3.5 mm
Adjustment steps:
• Remove the right-hand side fairing
• Remove the tensor casing on the carburettor
• Turn the tensor inwards or outwards until
getting the free play specified
Turning inwards increases the play
Turning outwards reduces the play
• Install the tensor casing
INSPECTING THE SPARK PLUG
1. Remove:
• The spark plug
2. Inspect:
• The type of spark plug
Incorrect Change
Standard spark plug:
BR9ES
3. Inspect:
• The electrode Wear/damage replace
• The insulation Abnormal colour Replace
The normal colour is a medium-light
beige
4. Clean the spark plug with a special tool for
this or with a metal brush.
5. Measure:
• The gap between electrodes (a)
Use a wire or feeler gauge
This does not match the value specified
Correct the distance.
Spark plug gap:
0.7 ~ 0.8 mm.
3-7
INSPECTING THE SPARK PLUG
INSP
ADJ
6. Tighten:
• The spark plug
Before installing a spark plug, clean the
surfaces of the gasket and of the spark
plug itself
Tightening torque:
23 Nm (2.3 m • kg)
NOTE:
Make the sparkplug finger-tight before tightening this to the specified degree.
3-8
INSP
ADJ
CHECKING THE ENGINE OIL LEVEL
INSPECTING THE ENGINE OIL LEVEL
(MIXTURE)
1. Check:
• The oil level
Oil level low top up with sufficient oil.
Recommended oil:
Yamaha 2 stroke oil
Capacity of the oil tank:
1.2 L
METHOD FOR CHECKING THE OIL LEVEL INDICATOR
Main switch “ON”
The warning light
does not come on
The warning light
comes on
Wait a few seconds
Ask the Yamaha/MBK
dealer to inspect the
electrical circuit
The warning light goes off
The warning light stays on
The engine oil level and
electrical circuit are OK
Add engine oil
“OIL” level indicator
CAUTION
Always use the same type of engine oil:
Mixtures of different oils may give rise to
detrimental chemical reactions and reduce
efficiency.
3-9
INSPECTING THE OIL LEVEL OF THE TRANSMISSION/CHANGING THE TRANSMISSION OIL
INSP
ADJ
INSPECTING THE OIL LEVEL OF THE
TRANSMISSION
1. Heat up the engine for one minute and
then stop this
2. Keep the motorcycle horizontal and take
out the level screw 3. Inspect:
• The oil level
The oil level must be enough to overflow
when taking out the level screw Oil level too low top up with sufficient
oil to re-establish the right level.
Recommended oil:
SAE 10W 30 SE type engine oil.
CAUTION
• Do not add chemical additives. The transmission oil also lubricates the clutch and
the additives could make it slip.
• Make sure that no foreign bodies get into
the crankcase.
CHANGING THE TRANSMISSION OIL
1. Warm up the engine for a few minutes.
2. Place an open recipient under the engine
3. Remove:
• The oil filler cap
• Oil drain plug 4. Empty:
• The transmission oil
NOTE:
Empty out the transmission oil when the
motorcycle is completely vertical.
3-10
CHANGING THE TRANSMISSION OIL/
ADJUSTING THE CLUTCH
INSP
ADJ
5. Inspect:
• The O ring (of the oil filling cap) Damage replace
6. Install:
• The drainage cap gasket
NOTE:
Always use a new gasket
• Oil drain plug
Oil draing plug:
1.7 kg • m
7. Fill up with:
• The transmission oil
Recommended oil:
SAW/0W30 SE type engine oil
Total amount:
0.82 L
Regular oil change:
0.75 L
8. Install:
• The O ring of the filling cap
• The oil filler cap
a
ADJUSTING THE CLUTCH
1. Check:
• The clutch lever free play (a)
Out of specified value Adjust
Free play:
10 ~ 15 mm
2. Adjust:
• The free play of the clutch lever
Adjustment steps
• Loosen the locknut • Turn the tensor in one direction or
the other until getting the specified free
play
3-11
ADJUSTING THE CLUTCH /
CLEANING THE AIR FILTER
INSP
ADJ
Tightening
increases free play
Loosening
reduces free play
• Tighten the locknut
NOTE:
Normally, after properly adjusting the regulator
for the length of the clutch cable (crankcase)
the only adjustment required is to keep the
right free play by means of the clutch cable
tensor (handlebar lever).
NOTE:
The procedure described will enable you to get
the maximum free play of the clutch cable to
be able to adjust the clutch action mechanism
properly.
See the section “DISMANTLING THE ENGINE
- ASSEMBLING AND ADJUSTING THE ENGINE” in CHAPTER 4.
CLEANING THE AIR FILTER
1. Remove:
• The seat
• The side covers (left and right-hand)
See the section on “SIDE COVERS DISMANTLING”
2. Dismantle:
• The fuel tank
See the section “REMOVING THE ENGINE” in CHAPTER 4.
3-12
CLEANING THE AIR FILTER
INSP
ADJ
3. Remove:
• The cover of the air filter case 4. Take out:
• The filter element CAUTION
Never let the engine run without the filter
element of the air filter as unfiltered air
would get into the engine, which would lead
to early wear and possible motor faults.
Apart from this, running without the filter
element affects the tuning of the carburation, thus reducing the efficiency and possibly making the engine overheat.
5. Inspect:
• The filter element
Damage replace
6. Clean:
• The air filter element
Cleaning steps:
• Wash the element carefully but thoroughly, with solvent s WARNING
Never use solvent with an excessively low
flash point, like petrol, to clean the filter
element. This kind of solvents may lead to
fires or explosions.
• Drain off the surplus solvent and leave it
to dry
CAUTION
Do not wring out the filter element to
drain this
3-13
CLEANING THE AIR FILTER / INSPECTING THE CARBURETTOR GASKET
INSP
ADJ
• Apply SAE 10 W30 engine oil • Drain off any excess oil
NOTE:
The element should be damp but not soaked.
7. Install:
• The filter element of the air filter
CAUTION
Make sure that the edge of the element fits
in the corresponding slot of the filter box
8. Install:
• Air filter case cover
• The fuel tank
9. Install:
• The side covers (left and right-hand)
• The tank
• The seat
See the section on “SIDE COVERS ASSEMBLY”
INSPECTING THE CARBURETTOR
GASKET
1. Dismantle:
• The seat
• The side covers (left and right hand)
See the section on “SIDE COVERS - DISMANTLING”
2. Dismantle:
• The fuel tank
• The air filter cse
See the section on “REMOVING THE
ENGINE” in CHAPTER 4.
3-14
INSPECTING THE CARBURETTOR GASKET /
INSPECTING THE FUEL HOSES
3. Inspect:
• The carburettor joint Cracks/damage Replace
See the section on “CARBURETTOR” DISMANTLING THE ENGINE in CHAPTER 4
INSP
ADJ
4. Install:
• The air filter case
• The fuel tank
5. Install:
• The side covers (left and right-hand)
• The seat
See the section on “SIDE COVERS ASSEMBLY”
INSPECTING THE FUEL HOSES
1. Dismantle:
• The seat
• The small left-hand side cover ON
FUEL
OFF
RES
2. Inspect:
• The fuel inlet pipe Cracks / Damage Replace
3. Install:
• The small left-hand side cover
• The seat
3-15
INSPECTING THE EXHAUST SYSTEM / INSPECTING
THE LEVEL OF COOLANT
INSP
ADJ
INSPECTING THE EXHAUST SYSTEM
1. Inspect:
• The exhaust pipe
• The muffler
Cracks / Damage Replace gaskets Leakages of exhaust gases Replace
Replacement steps:
Dismantle the exhaust assembly
Install a new exhaust assembly
Screw :
1.5 kg • m
Screw :
2.3 kg • m
INSPECTING THE COOLANT LEVEL
1. Place the motorcycle on a level surface.
2. Inspect:
• The level of coolant
• The level of coolant is under the minimum mark
Remove panel Add water (for the cooling circuit)
MAX
MIN
3-16
INSPECTING THE COOLANT LEVEL /
CHANGING THE COOLANT
INSP
ADJ
NOTE:
To check the level of coolant, place the
motorcycle in a vertical position; if it leans to
one side, however little this may be, the readings may be false.
CAUTION
Water with impurities is damaging for the
engine components. You can use boiled or
distilled water
3. Add:
• Water to the cooling circuit
Until the level of liquid reaches the
“MAX” maximum mark
MAX
Capacity of the reservoir tank:
Total:
0.71 L
From the “MIN” minimum mark to
the “MAX” maximum mark:
0.18 L
MIN
4. Install:
• Panel CHANGING THE COOLANT
s WARNING
Do not remove the radiator cap while this
and the engine are hot. Hot vapour and
liquid could emerge with consequent danger of serious injury. When the engine has
cooled off, open the radiator tap as follows:
place a thick cloth, for example a towel,
over the cap and turn this as far as it will go,
slowly, anti-clockwise. This procedure will
let any residual pressure release. When the
whistling sound has stopped, tighten the
cap downwards making it turn at the same
time anti-clockwise, and remove it.
3-17
CHANGING THE COOLANT
INSP
ADJ
1. Disconnect:
• The breather pipe 2. Drain the coolant reservoir tank.
3. Remove:
• The securing screw • The radiator cap 4. Remove:
• The drainage screw 5. Drain:
• The coolant
NOTE:
Empty out the coolant with the motorcycle
slightly tilted to the right.
6. Install:
• The gasket (new) • The drainage screw Drainage screw:
0.5 kg • m
CAUTION
• Always install a new gasket
• Install the gasket as shown in the illustration
7. Install:
• The radiator
• The engine
3-18
CHANGING THE COOLANT
INSP
ADJ
Coolant recommended:
high quality ethylene glycol antifreeze, containing corrosion inhibitors for aluminium engines.
Coolant and distilled water.
Mixing proportion:
50 % / 50 %
Total amount:
0.7 L
Capacity of reservoir tank:
0.47 L
Notes on handling the coolant liquid:
The coolant is harmful and should thus be
handled with special care.
s WARNING
• If the coolant liquid gets in someone’s
eyes, wash these out thoroughly with
water and see a doctor.
• If the coolant splashes clothing wash
this immediately with water and then
with soap.
• If coolant is swallowed make the person affected vomit immediately and
see a doctor.
CAUTION
• Water with minerals is damaging for the
engine components: use boiled or distilled water.
• Do not use water containing impurities or
oil.
• Take care that the coolant does not
splash any painted surface. If there is any
splashing, wash the surfaces with water.
3-19
CHANGING THE COOLANT
INSP
ADJ
Stages in filling with coolant:
• Remove the screw of the radiator cap
• Pour the coolant into the radiator
Drainage screw:
0.5 kg • m
• Pour the coolant into the radiator until
the level specified is reached • Connect the breather pipe • Install the radiator cap • Fill the reservoir tank with coolant until
the level reaches the “MAX” maximum
mark
• Start the engine and leave it to warm up
• Stop the engine and check the coolant
liquid level
——————————————————
NOTE:
Wait a few minutes until the coolant liquid
level has stabilised, before making the
check.
MAX
MIN
8. Install:
• The panel 3-20
INSPECTING THE COOLING SYSTEM / ADJUSTING
THE REAR BRAKE / INSPECTING THE BRAKE LIQUID
INSP
ADJ
INSPECTING THE COOLING SYSTEM
1. Inspect:
• The radiator • The inlet hose • The outlet hose Cracks / Damage Replace
See the section on “COOLING SYSTEM”
in CHAPTER 5
ADJUSTING THE REAR BRAKE
Adjusting the free play of the rear brake
pedal
1. Check:
• The free play of the brake pedal (a)
Out of specification Adjust
Free play of the brake pedal:
10 ~ 15 mm
a
2. Adjust
• Free play of the rear brake pedal
Adjustment steps
• Turn the adjustment device located in the
lever pusher by means of the nut and locknut system
Tighten Increases the free play of
the pedal
Loosen
pedal
Reduces the free play of the
INSPECTING THE BRAKE LIQUID
1. Place the motorcycle on a flat surface
2. Check:
3. Brake liquid level
• The level is under the “MIN” mark fill
up
MIN.
Brake liquid recommended:
DOT nº 4
3-21
INSPECTING THE BRAKE LIQUID /
BLEEDING THE AIR
INSP
ADJ
NOTE:
• Place the motorcycle vertically to check the
level of the brake liquid
• When checking the front brake liquid level,
make sure that the top side of the master
cylinder is horizontal, moving the handlebar
if necessary
CAUTION
The brake liquid can erode the painted surfaces and the plastic parts: always immediately clean any liquid spilt.
s WARNING
• Use only brake liquid of the specified quality; otherwise the rubber seals might deteriorate, which would give rise to leakages
and a reduction in the effectiveness of the
brakes
• Fill up again with liquid of the same type;
the mixture of different liquids might give
rise to detrimental chemical reactions and a
consequent drop in efficiency. Take care
that water does not get into the master
cylinder when filling up.
• Water makes the boiling point of the liquid
drop considerably and may give rise to an
obstruction through vapour.
BLEEDING THE AIR
s WARNING
The brake system must be bled in the following cases:
• When the system has been dismantled
• When a brake sleeve has been loosened
or dismantled
• When the brake liquid level is too low
• When the brake operation is faulty
• There may be a dangerous drop in braking
capacity if the system has not been properly bled.
1. Bleed:
• The brake liquid
3-22
BLEEDING THE AIR / INSPECTING THE BRAKE PADS
INSP
ADJ
Bleeding air steps:
a. Add brake liquid of the appropriate
type to the tank
b. Install the diaphragm. Take care not to
spill the liquid and for the tank not to
overflow
c. Connect the transparent plastic tube firmly to the calliper bleeding screw
d. Install the other end of the tube into a
recipient
e. Activate the brake lever slowly several
times
f. Pull the handle. Keep it in this position.
g. Loosen the bleed screw and let the
lever move to the end of its travel.
h. Tighten the drain screw when the lever
has reached the limit; then release the
lever.
Bleed screw:
0.6 kg • m
i. Repeat stages (e) to (h) until any air bubbles have disappeared from the system.
NOTE:
If you have trouble bleeding the system, you
might need to leave all the brake system
liquid to stand for a few hours. Repeat the
bleeding procedure when the tiny bubbles
contained in the system have disappeared.
j. Add brake liquid up to the level line marked on the tank.
INSPECTING THE BRAKE PADS
1. Push the brake lever.
2. Inspect:
• The brake pads If the thickness of the pads is under 0.5
mm Replace the set of brake pads.
See the section on “CHANGING THE
BRAKE PADS” in CHAPTER 7.
3-23
ADJUSTING THE BRAKE LIGHT SWITCH /
INSPECTING THE BRAKE HOSES
INSP
ADJ
ADJUSTING THE BRAKE LIGHT SWITCH
NOTE:
The brake light switch is activated by the
movement of the brake pedal. This is properly
adjusted when the brake light comes on
immediately before the brake starts to work.
1. Hold the switch body still with your hand
so that this does not rotate and turn the
adjustment nut in direction (b).
CAUTION
After adjusting make sure that this comes
on.
a
b
INSPECTING THE BRAKE HOSES
1. Inspect:
• The brake hoses
Cracks/Wear/Damage Replace
3-24
ADJUSTING THE DRIVE CHAIN SLACK
INSP
ADJ
ADJUSTING THE DRIVE CHAIN SLACK
NOTE:
Before checking and/or adjusting the chain,
make the rear wheel turn several times and
check the tension at several points until you
find the place where this is most tense. Check
and /or adjust the chain with the rear wheel in
this position of maximum tension.
1. Place the motorcycle on a flat surface and
in vertical position.
NOTE:
Both wheels must be supported on the ground
and with no rider seated.
a
2. Check:
• The drive chain slack
(a) This does not match the specified
value Adjust
Chain (a) slack:
20 ~ 25 mm
with the rear wheel resting on the
ground.
3. Adjust:
• The drive chain slack
Adjustment steps
CAUTION
If the chain is too taut the loads on the
engine and other vital components
increase excessively, so keep the chain
slack within the limits specified.
• Remove the pin • Loosen the axle nut 2 and the locknut • Turn the tensor 4 in one direction or the
other until the tension specified is obtained.
Tighten Increases the free play
Loosen Reduces the free play
NOTE:
Turn both tensors to exactly the same
extent, to keep the axle properly aligned.
(There are marks on both sides of the swingarm and on each chain tensor: use these
to make sure that the alignment is correct.)
3-25
ADJUSTING THE DRIVE CHAIN SLACK
INSP
ADJ
• Tighten the axle nut Axle nut:
85 Nm (8.5 kg • m)
NOTE:
Tighten the axle nut while keeping the chain
taut with your hand so as to keep the proper play of the chain.
• Tighten the tensor Tensor:
0.5 kg • m
• Tighten the locknut Locknut:
1.5 kg • m
• Tighten the securing screw of the brake
calliper
• Install the pin (use a new one)
• Adjust the free play of the brake pedal
See “ADJUSTING THE REAR BRAKE”
NOTE:
Do not loosen the axle nut after tightening
to the specified torque. If the nut slot does
not coincide with the hole for the pin found
in the axle, line both of these up by tightening the nut.
s WARNING
• Always use a new pin for the axle nut
• Check the operation of the brake light
after adjusting the rear brake.
3-26
LUBRICATING THE DRIVE CHAIN /
ADJUSTING THE STEERING
INSP
ADJ
LUBRICATING THE DRIVE CHAIN
The chain consists of a large number of parts
that work in constant contact with each other.
If it does not get proper maintenance it will
wear quickly. This is why one should acquire
the habit of checking the chain regularly.
These checks are particularly necessary when
driving through dusty areas.
1. Use a chain lubricant in aerosol form. First
remove any dirt and mud from the chain
with a brush or cloth; then spray the lubricant between both rows of side plates,
above all the central rollers.
2. To clean the chain, take this off the machine, submerge it in solvent and get rid of all
the dirt possible. Take the chain out of the
solvent and dry it. Immediately lubricate
this to prevent it from rusting.
Recommended lubricant:
SAE 10W30 SE type
ADJUSTING THE STEERING
Inspecting the steering head
s WARNING
Stand the motorcycle in a safe place to
avoid any danger of it falling over
1. Lift the front wheel, placing a suitable support under the engine.
2. Check:
• The bearings of the steering assembly.
Twist grip the ends of the fork arms and
gently rock the assembly forwards and
backwards.
Play Adjust the steering head
3-27
ADJUSTING THE STEERING
INSP
ADJ
Adjusting the steering head
1. Adjust:
• The steering head
Adjustment steps:
• Loosen the screw of the handlebar
clamp, the screw of the upper steering
shank and the screw of the steering
shaft.
• Take off the fuel tank.
• Tighten the ring nut with the wrench designed for this .
Wrench for ring nut:
90890 - 01403
NOTE:
Apply the torque wrench to the ring nut
wrench so that both form a right angle.
Ring nut (initial tightening):
2.0 kg • m
• Loosen the ring nut one turn.
• Retighten the ring nut using the special
wrench for this.
s WARNING
Do not tighten excessively
Ring nut (final tightening):
0.6 kg • m
• Tighten screw (steering shaft), screw
(upper shank) and screw (handlebar).
Screw (steering shaft):
5.6 kg • m
Clamp screw (upper shank):
2.2 kg • m
Clamp screw (handlebar):
2.2 kg • m
3-28
CHANGING THE FORK OIL
INSP
ADJ
CHANGING THE FORK OIL
s WARNING
• Leaks of oil from the fork may give rise to
drops in stability and reduce driving
safety. Any problems found must be
corrected before using the motorcycle.
• Stand the motorcycle up firmly to avoid
any danger of it falling over.
1. Lift up the front wheel placing a suitable
support under the engine.
2. Remove:
• The rubber cover 3. Loosen:
• The clamp screw (handlebar) 4. Remove:
• The circlip • The plug NOTE:
Press the plug with an appropriate bar and
remove the circlip 1 with a fine screwdriver.
5. Remove:
• Forks
6. Drain:
• Oil
s WARNING
Do not let the oil get in touch with the components of the disc brake. If oil gets on the
brake components remove this before
using the motorcycle. Oil reduces the braking capacity and damages the rubber
items in the brake assembly.
3-29
CHANGING THE FORK OIL
INSP
ADJ
7. After removing most of the oil, pump up
and down with the fork to get any remaining oil out.
8. Inspect:
• The O ring (plug)
Damages Replace
9. Fill up with:
• Fork oil
Oil capacity of the front fork (each
arm):
235 cm3
Recommended oil:
10W fork oil or equivalent
10. After filling this, pump the fork up and
down slowly, to distribute the oil.
11. Install:
• The plug • The circlip s WARNING
Always use a new circlip
12. Tighten:
• The clamp screw (upper and lower steering shank)
Clamp screw (upper steering
shank):
2.2 kg • m
3-30
INSP
ADJ
INSPECTING THE TYRES
INSPECTING THE TIRE
1. Measure:
• The air pressure
Out of specification
Adjust
Basic weight:
With oil and fuel
tank full
124.2 kg.
Maximum load*
195 kg.
Cold tyre pressure
Up to 90 kg. (198 lb)
load
Front
Rear
(1.8kg/cm2) (2.0kg/cm2)
From 90 kg (198 lb)
up to maximum load*
(1.9kg/cm2) (2.3kg/cm2)
* The load is the total weight of the equipment, driver,
passenger and accessories
s WARNING
The tire pressure must be checked and
adjusted when the tire is at ambient temperature. This must be adjusted depending on
the total weight of the equipment, driver
and accessories (fairing, cases, etc. if these
have been approved for this model) as well
as on the speed of the vehicle.
2. Inspect:
• The surfaces of the tires
Wear/damage replace
Minimum depth of the tire tread
pattern:
(front and rear)
1.6 mm (0.06 inch)
(1) Depth of the tread
(2) Lateral
(3) Wear indicator
s WARNING
It is dangerous to drive the motorcycle with
excessively worn tyres. When bands start
to be seen in the tread of a tire change this
immediately
3-31
INSPECTING WHEELS /
INSPECTING CABLES
INSP
ADJ
INSPECTING WHEELS
1. Inspect:
• The wheels
Damage / deformations
Replace
NOTE:
After changing the tire or the wheel always
balance the wheel.
s WARNING
Do not attempt to repair a deffective wheel.
INSPECTING CABLES
1. Inspect:
• The throttle cable
• The tachometer cable
• The clutch cable
• The speedometer cable
Check any damage in the cable sheaths.
Corrosion / Damage
Obstruction
Replace
Change the route
Lack of smoothness
3-32
Lubricate
LUBRICATION
INSP
ADJ
LUBRICATION
Lubrication of cables
Lubricating steps:
• Keep the cable in vertical position
• Apply lubricant to the upper end of the
cable
• Keep this in a vertical position until the oil
comes out of the other end
• Leave any excess oil to drain off and then
reinstall the cable.
Engine oil:
SAE 10W30 of SE type
Lubrication of levers and pedals
Lubricate the rotating parts of each lever and
pedal.
Engine oil:
SE type SAE 10W30
Lubrication of the side stand
Lubricate the rotating parts.
Engine oil:
SE type SAE 10W30
Lubricating the swingarm
Lubricate the rotating points of the swingarm
Grease
Light with lithium soap base
3-33
INSP
ADJ
ELECTRICAL SYSTEM
ELECTRICAL SYSTEM
INSPECTING THE BATTERY
1. Remove:
• The seat
2. Inspect:
• The battery terminals
Dirty terminals
brush
Bad connection
Clean with a metal
Correct
NOTE:
After cleaning the terminals, apply grease
lightly
Change the battery in the following case:
• When the voltage does not reach the value
specified, even after many hours charging.
M/F battery charger:
90890-03150
CAUTION
This battery is the M/F no maintenance
type. Never take the cover off. After sealing
when inserting the electrolyte, this should
never be opened again.
3-34
INSPECTING THE BATTERY
INSP
ADJ
s WARNING
The electrolyte in the battery is dangerous:
it contains sulphuric acid and is consequently poisonous and very caustic.
Always observe the following preventive
measures:
• Avoid any physical contact with the electrolyte as it may cause serious burns or
permanent eye injuries:
• Use protective goggles when you handle
batteries or work close to these.
Antidote (external):
• SKIN - Wash with water
• EYES - Wash off with water for 15 minutes
and immediately consult the doctor.
Antidote (INTERNAL):
• Drink large amounts of water or milk,
followed by milk of magnesia, beaten egg
or vegetable oil.
• Immediately see a doctor.
Batteries ALSO generate explosive hydrogen gas, for which reason the preventive
measures must always be taken:
• Charge batteries in a well-ventilated area.
• Keep batteries away from fire, sparks or
flames (for example, welding equipment,
lighted cigarettes, etc.)
• DO NOT SMOKE while batteries are being
charged or handled.
KEEP BATTERIES AND ELECTROLYTE OUT
OF CHILDREN’S REACH
3-35
INSPECTING THE FUSES
INSP
ADJ
INSPECTING THE FUSES
1. Remove:
• The seat
2. Remove:
• The fuse 3. Inspect:
• The fuse
Stages in inspection
• Connect the pocket tester to the fuse and
check if the continuity is correct.
NOTE:
Place the tester selector in position “Ω X 1”
Pocket tester:
90890 - 03112
• If the tester indicates ∞ the fuse will have
blown - change this.
4. Replace:
• The blown fuse
s WARNING
Do not use fuses with a higher amperage
than the value specified.
Installing a fuse with the wrong amperage
could cause damage to the electrical system and even fires.
3-36
ADJUSTING THE HEADLIGHT BEAM /
CHANGING A HEADLIGHT BULB
INSP
ADJ
ADJUSTING THE RIGHT-HAND
HEADLIGHT BEAM
1. Adjust :
• The headlight beam (vertical)
To raise beam
Turn the adjustment
screw clockwise
To lower the beam
Turn the adjustment
screw anti-clockwise
ADJUSTING THE LEFT-HAND HEADLIGHT
BEAM
1. Repeat the same operations as for the
right-hand headlight
CHANGING A HEADLIGHT BULB
1. Remove:
• The dust cover and the connection .
2. Take out:
• The bulb
s WARNING
Keep the bulb away from inflammable products and the hands while this is on, since
it will be hot. Do not touch the bulb until it
has gone cold.
3. Install:
• The bulb (a new one)
Install the bulb in the bulb socket
4. Connect:
• Connection of the headlight cables
5. Install:
• Dust cover
3-37
ENG
4
ENG
CHAPTER 4
ENGINE
REMOVING THE ENGINE ………………………………………………………4-1
PREPARING FOR REMOVAL…………………………………………………4-1
PETROL TANK …………………………………………………………………4-2
AIR FILTER ……………………………………………………………………4-3
EXHAUST PIPE ………………………………………………………………4-4
COOLANT PIPES ………………………………………………………………4-4
SPARK PLUG AND THERMOCONTACT CABLE …………………………4-5
NEUTRAL SWITCH CABLE …………………………………………………4-5
OIL PUMP ………………………………………………………………………4-5
CARBURETTOR ………………………………………………………………4-6
SHIFT LEVER, DRIVE CHAIN AND CLUTCH CABLE ……………………4-6
ENGINE REMOVAL ……………………………………………………………4-7
DISMANTLING THE ENGINE …………………………………………………4-7
OIL PUMP ………………………………………………………………………4-7
WATER PUMP COVER ………………………………………………………4-7
RIGHT CRANKCASE COVER, OIL PUMP SHAFT AND
WATER PUMP SHAFT ……………………………………………………4-7
PRIMARY TRACTION GEARING AND CLUTCH …………………………4-8
CDI MAGNETO ………………………………………………………………4-10
STARTER MOTOR ……………………………………………………………4-10
CYLINDER HEAD AND CYLINDER ………………………………………4-11
PISTON PIN AND PISTON …………………………………………………4-12
CRANKCASE …………………………………………………………………4-12
SELECTOR AND SHIFT ……………………………………………………4-13
CRANKSHAFT ………………………………………………………………4-13
BEARINGS AND OIL SEALS ………………………………………………4-14
INSPECTION AND REPAIR ……………………………………………………4-14
CYLINDER HEAD ……………………………………………………………4-14
PISTON ………………………………………………………………………4-15
CYLINDER ……………………………………………………………………4-16
PISTON RINGS ………………………………………………………………4-17
PISTON PIN AND BEARING ………………………………………………4-17
AUTOLUBE PUMP …………………………………………………………4-18
CLUTCH ………………………………………………………………………4-18
SELECTOR ……………………………………………………………………4-20
SHIFT …………………………………………………………………………4-20
CRANKSHAFT ………………………………………………………………4-21
REVOLUTION COUNTER SENDER ………………………………………4-21
BEARINGS AND OIL SEALS ………………………………………………4-22
CRANKCASE …………………………………………………………………4-22
ASSEMBLING AND ADJUSTING THE ENGINE ……………………………4-23
CRANKSHAFT ………………………………………………………………4-23
SHIFT AND SELECTOR ……………………………………………………4-25
CRANKCASE …………………………………………………………………4-27
STARTER MOTOR ……………………………………………………………4-29
CDI MAGNETO ………………………………………………………………4-30
CLUTCH AND PRIMARY TRACTION GEARING …………………………4-31
WATER PUMP SHAFT, OIL PUMP SHAFT AND
RIGHT-HAND CRANKCASE COVER ……………………………………4-35
WATER PUMP COVER ………………………………………………………4-36
OIL PUMP ……………………………………………………………………4-36
PISTON PIN AND PISTON …………………………………………………4-37
CYLINDER HEAD AND CYLINDER ………………………………………4-38
INSTALLING THE ENGINE …………………………………………………4-40
REMOVING THE ENGINE
ENG
ENGINE
REMOVING THE ENGINE
NOTE:
It is not necessary to remove the engine to
take out the following components:
• Cylinder head
• Cylinder
• Piston
PREPARATION FOR REMOVAL
1. Remove all the dirt, mud, dust and foreign
bodies before removing and dismantling
the engine.
2. Use the proper tools and cleaning materials. See “CHAPTER 1. GENERAL INFORMATION - SPECIAL TOOLS”.
NOTE:
When the engine is dismantled keep associated parts together. This includes gears, cylinder, piston and other items that have been
coupled due to common wear. These items
must be installed as an assembly or should be
replaced by new ones.
3. When dismantling the engine, clean all the
parts and place these in trays in the dismantling order. This will reduce the
assembly time and ensure that all the parts
removed are properly fitted in the engine
again.
4. Remove the lower fairing. Place the engine
on a suitable support.
5. Start the engine and let it warm up.
6. Completely drain the transmission oil. See
the section on “CHANGING THE TRANSMISSION OIL in CHAPTER 3, REGULAR
INSPECTIONS AND ADJUSTMENTS”.
7. Completely drain the coolant. See the section on “CHANGING THE COOLANT in
CHAPTER 3. COOLING SYSTEM”.
4-1
REMOVING THE ENGINE
PETROL TANK
1. Remove:
• Seat
• Grip strap
• Side covers (left / right)
ON
FUEL
OFF
ENG
RES
2. Remove the fuel tank cap
3. Remove the bolts of the fuel tank and
and of its cover .
4. Lift up the cover of the fuel tank as shown
in the drawing and remove the tray and the
fuel overflow pipe from its original position.
NOTE:
Do not remove the lower part of the overflow
pipe from its original position
5. Locate the fuel tap in the closed position
(OFF) and take the lever out of this.
6. Provisionally lift up the fuel tank and its
cover, disconnect the fuel pipe and remove the tank and the cover.
ON
FUEL
OFF
RES
4-2
REMOVING THE ENGINE
AIR FILTER
1. Remove:
• Securing screw 2. Take out:
• Clip
3. Disconnect:
• Rubber pipe
◗
4. Remove
• Filter casing
4-3
ENG
REMOVING THE ENGINE
ENG
EXHAUST PIPE
1. Remove:
• Springs • Clamp of the AIS system 2. Remove:
• Exhaust pipe screws and • Exhaust pipe
COOLANT PIPES
1. Remove:
• Fairing
• Drainage screw 2. Drain:
• Coolant liquid
3. Disconnect:
• Coolant pipe (inlet) • Coolant pipe (outlet) 4-4
REMOVING THE ENGINE
ENG
SPARK PLUG AND THERMOCONTACT
CABLE
1. Disconnect
• Spark plug cable • Thermocontact cable 2. Loosen:
• Spark plug CDI CABLE
1. Disconnect:
• CDI cable
NEUTRAL SWITCH CABLE
1. Disconnect:
• Neutral switch cable
OIL PUMP
1. Remove:
• Cover of the oil pump
2. Remove:
• Cable of the oil pump 3. Disconnect:
• Oil inlet tube to the pump NOTE:
Plug the oil inlet pipe to the pump so the oil
from the tank does not get out.
4-5
REMOVING THE ENGINE
ENG
CARBURETTOR
1. Loosen:
• Carburettor securing screw 2. Remove:
• Upper carburettor cover • Throttle cable • Tube for supplying the oil pump • Coolant pipes • Starter cover • Starter cable 3. Remove:
• Carburetor
• Carburetor joint
• Plate casing
NOTE:
Cover the carburetor with a clean cloth to prevent dirt from getting into this.
SHIFT CAM, DRIVE CHAIN AND CLUTCH
CABLE
1. Remove:
• Shift cam • Pinion cover 2. Loosen:
• Rear axle nut
• Chain tensor
• Drive chain
3. Remove:
• Drive chain 4-6
REMOVING THE ENGINE /
DISMANTLING THE ENGINE
ENG
4. Disconnect:
• Clutch cable First disconnect the cable of the crankcase side and then the end at the handlebar lever
REMOVING THE ENGINE
1. Remove:
• Front engine mounting screw • Rear lower engine mounting screw • Rear upper engine mounting screw • Engine assembly
OIL PUMP
1. Remove:
• Oil pump cover
• Oil pump assembly
WATER PUMP COVER
1. Remove:
• Water pump cover • Water pump cover gasket
RIGHT CRANKCASE COVER, OIL PUMP
SHAFT AND WATER PUMP SHAFT
1. Remove:
• Right-hand oil pump cover 4-7
DISMANTLING THE ENGINE
2. Remove
• Clip • Washer • Water pump driven gear • Pin • Washer • Water pump shaft • Clip • Oil pump driven gear • Pin • Washer 10
• Oil pump shaft 11
• Washer 12
• Clip 13
• Washer 14)
• Intermediate gear 15
• Washer 16)
3. Remove:
• Locators • Gasket
ENG
CLUTCH AND PRIMARY TRACTION GEARING
1. Remove:
• Securing screws for the clutch springs • Clutch springs • Pressure plate • Push rod nº 1 • Friction discs • Clutch discs 2. Remove:
• Push rod ball
• Push rod Nº 2
• Shaft set of the clutch push lever 3. Loosen:
• Safety nut of the clutch casing Use the universal clutch holder (9089004086) to hold the clutch cone
4-8
REMOVING THE ENGINE
4. Remove:
• Clutch boss safety nut • Washer • Clutch boss • Washer • Clutch housing • Washer • Conical spring washer ENG
s WARNING
Pay attention to the position of the conical
spring washer. Install as shown in the figure.
5. Loosen:
• Balancer shaft nut
6. Remove:
• Primary traction gear nut • Primary traction gear • Key • Balancer shaft drive gear • Balancer shaft washer and nut • Balancer shaft driven gear • Key 7. Remove:
• Washer • Tachometer worm gear • Washer 8. Remove:
• Magnetic flywheel cover
• Neutral switch
4-9
REMOVING THE ENGINE
ENG
CDI MAGNETO
1. Remove:
• Left-hand crankcase cover and gasket
• Flywheel securing nut.
Use the flywheel-holding tool
90890-01235 2. Remove:
• CDI flywheel
Use the flywheel extractor tool
90890 - 01189 and the flywheel fixer
90890-01235 • Crankshaft key
• Stator coils
• Coil holder plate
NOTE:
Mark the coil holder plate and the crankcase
with a pointed instrument
STARTER MOTOR
1. Remove:
• Securing screws
4-10
DISMANTLING THE ENGINE
CYLINDER HEAD AND CYLINDER
1. Remove:
• Spark plug
• Nuts and washers
• Thermocontact a
c
d
b
ENG
NOTE:
Following the order stated in the drawing (a, b,
c,d), loosen each screw ¨ of a turn and then
fully unscrew them.
2. Remove:
• Cylinder head • O rings • Thermostat s WARNING
Handle the thermocontact with special
care. Do not grip it too tightly or drop it. If it
is dropped it must be replaced with a new
one.
3. Remove:
• Cylinder
4. Remove:
• Cylinder gasket 5. Remove:
• Reed valve assembly
4-11
DISMANTLING THE ENGINE
ENG
PISTON PIN AND PISTON
1. Take out:
• Piston pin clip NOTE:
Before removing the pin clip from the piston,
cover the crankcase with a clean cloth to prevent the clip from falling into the crankcase.
2. Take out:
• The piston pin
• Piston
• Bearing
NOTE:
Before taking out the pin, remove any burrs
from the slot of the clip and the pin hole. If it
were still difficult to take out the pin after
removing any burrs, use the piston pin extractor (90980 - 01304)
CAUTION
Do not use a hammer to take out the piston
pin
CRANKCASE
1. Take out:
• Circlip • The output gear • Circlip 2. Take out:
• The crankcase securing screws
NOTE:
Loosen each of the screws a quarter of a turn.
Then unscrew them completely and take them
out.
3. Separate
• Crankcase
NOTE:
Tap these gently and alternately
4-12
DISMANTLING THE ENGINE
ENG
CAUTION
Use a soft hammer to hit the crankcase
lightly. Only tap the reinforced parts. Do not
tap the closing surface. Work slowly and
carefully. Make sure that the crankcase
comes apart gently. If the crankcase does
not come apart, make sure that no screws
or locator have been left in. Do not force
this.
4. Take out:
• Locators
5. Take out:
• Balancing shaft
SELECTOR AND SHIFT
1. Take out:
• Guide bars
• Secondary shaft, primary shaft, selector
cam and set of selector forks.
• Shift selector
NOTE:
Take note of the position of each part. Pay
special attention to the location and direction
of the selector forks.
CRANKSHAFT
1. Take out:
• Crankshaft
Crankshaft extractor 1 (90890-11030)
4-13
DISMANTLING THE ENGINE /
INSPECTION AND REPAIR
ENG
BEARINGS AND OIL SEALS
NOTE:
• It is not necessary to take out the bearings
and oil seals unless these are damaged. See
the section on “BEARINGS AND OIL SEALS”
in CHAPTER 1.
1. Take out:
• The oil rings
CAUTION
• Use a screwdriver to take out the seal.
• Place a piece of wood under the screwdriver
so as not to damage the crankcase
2. Take out:
• The bearings
NOTE:
• To facilitate removal and installing first heat
up the crankcase to roughly 95 ~125ºC. Heat
it up slowly to this temperature.
INSPECTION AND REPAIR
CYLINDER HEAD
1. Eliminate:
• Any carbon deposited.
Use a rounded scrap
NOTE:
Do not use any sharp tool and avoid damaging
or scratching the :
• Spark plug thread
• Cylinder head
2. Inspect
• Cylinder head (inside)
Remains of any material deposited /rust
remove
• Deformation of the cylinder head
Out of specification Sand down
4-14
INSPECTION AND REPAIR
ENG
Measuring warping and steps for sanding
the surface:
• Put a straightedge and a thickness gauge
on the cylinder head
• Measure the warpage
Outside specifications Sand / Replace
Maximum cylinder head warpage:
0.03 mm
• Place nº 400~600 wet sandpaper on the
surface and sand this down in a figure
eight shape.
NOTE
Turn the cylinder head round several times
so as not to take too much material off only
one side.
PISTON
1. Eliminate:
• Any carbon deposited (on the piston and
the ring slots)
2. Eliminate:
• Scratches and deposits found (on the
wall of the piston)
• Use nº 600~800 water sandpaper
NOTE:
Sand this in a cross shape and do not sand
excessively.
3. Inspect:
• The piston wall
• Wear / Scratching / damaged
Replace
4-15
ENG
INSPECTION AND REPAIR
CYLINDER
1. Eliminate:
• Any carbon deposits
Use a rounded scrap 2. Inspect:
• The cylinder
Mineral deposited / rust Remove
• Wall of the cylinder
Wear / scratches grind or replace
3. Measure:
• Diameter of the cylinder “C”
Outside specifications Grind
Use internal gauge Standard
Diameter of
cylinder “C”
40.293 ~
40.312
Wear
limit
40.4 mm
Diameter of
cylinder “T”
––
0.05 mm
Ovalling“R”
––
0.01 mm
C = D maximun
T = (D1 or D2 maximum) - (D5 or D6 minimum)
R = (D1 D3 or D5 maxim) - (D2 D4 or D6 minimum)
4. Measure:
• Outside piston diameter “P”
• Outside specifications Replace
Use the micrometer Micrometer:
90896 - 03008
NOTE:
The measurement should be taken 5 mm from
the lower edge of the piston
Size
4-16
Standard
40.25 mm
Oversize 1
40.6 mm
Oversize 2
40.8 mm
INSPECTION AND REPAIR
ENG
5. Measure
• Piston free play:
Outside specifications Grind the
cylinder or replace the piston
Piston clearance = C- P:
0.049 ~ 0.062 mm
C: Internal cylinder diameter
P: External piston diameter
PISTON RINGS
1. Measure:
• Lateral clearance
Out of specifications Replace the piston and/or rings
Use the thickness gauge Feeler gauge:
90890 - 03079
Lateral clearance:
Upper ring / 2nd ring
0.03 ~ 0.06 mm
2. Install:
• The piston ring (in the slot for the ring)
• Push the ring with the piston crown.
3. Measure:
• Clearance between ends
Out of specifications Change set of
rings.
Use the feeler gauge Clearance between ends:
Upper ring / 2nd ring
0.15 ~ 0.30 mm
PISTON PIN AND BEARING
1. Lubricate:
• The piston pin
• The bearing
2. Install:
• The piston pin
• Bearing (on the little end)
4-17
ENG
INSPECTION AND REPAIR
3. Check:
• Free play
There should not be any considerable
play
Free play exists check to see if the
con rod is worn / change the pin, bearing
and/or con rod, if necessary.
4. Install:
• Piston pin (on the piston)
5. Check:
• Free play (after the pin has been fitted on
the piston)
There should not be any considerable
free play
There is free play change the pin,
and/or piston.
6. Inspect:
• Piston pin and bearing
Blued by heat Replace
AUTOLUBE PUMP
Wear or an internal malfunction may alter the
factory-set flow of the pump. However, this is
not a very common situation.
If you suspect the flow is incorrect check the
following items:
1. Check:
• Feed pipe
Obstruction Clear
• Supply pipe
Obstruction Unblock
• Autolube pump
Damaged Change
2. Inspect:
• If there is air
There is air Bleed
• Flow:
Minimum outlet / 200 stroke 6 cc/h at
3000 rpm
Maximum outlet /200 stroke 28 cc/h at
3000 rpm
NOTE
The marks should coincide when the throttle is
closed.
CLUTCH
1. Inspect
• Friction disc Damaged / Worn
of friction discs
4-18
Change the full set
INSPECTION AND REPAIR
ENG
2. Measure:
• Thickness of the friction disc
Out of specifications Change the full
set of friction discs.
Measure at 4 points
Wear limit :
2.7 mm
3. Inspect:
• Clutch disc
Damaged change the full set of
clutch discs
4. Measure:
• Warpage of the clutch disc
Out of specifications Change the full
set of clutch discs.
Use the surface and feeler gauge Warpage limit:
0.05 mm (0.002 inches)
5. Measure:
• Free length of the clutch spring
Out of specifications Change the full
set of springs
Minimum length of clutch spring :
30.0 mm
6. Measure:
• Run out (long rod) Out of specifications Replace
Use V blocks and a comparator (90890 03097)
Warpage to limit:
0.15 mm
4-19
INSPECTION AND REPAIR
ENG
7. Inspect:
• Slots in the clutch drum
Cracks / wear / damaged
deburr or change
• Bearing of the clutch drum
Scraping / Wear / Damaged
8. Inspect:
• Splines in the clutch boss
Scratches/Wear/Damaged
the clutch boss
remove
Replace
Change
NOTE:
Scratching in the clutch boss
cause faulty operation
splines will
SELECTOR
1. Inspect:
• Return spring of the selector
Damaged Change
• Shift shaft
Damaged / Curved / Worn Change
CHANGE
1. Inspect:
• Forks of the selector (contact surface of
the gearing and the selector cam)
Wear / Scraping / Curved / Damaged Change
• Guide bars
Curved / Worn Change
2. Check:
• Movement of the selector forks (in their
respective guide bar)
Operation not smooth Change selector fork and/or bar guide.
3. Inspect
• Slots in the selector cam
Wear / Damaged / Scratching Change
• Ring of the selector cam
Damaged / Worn Change
4-20
INSPECTION AND REPAIR
ENG
4. Measure:
• Run out of the shaft
Outside specifications Change
Use the centring tool and the comparator (90890 - 03097)
Eccentricity limit:
0.08 mm
5. Inspect:
• Gearing
Damaged / Wear Change
6. Check:
• Operation of the gearing
Operation stiff Change
7. Inspect:
• Coupling lugs
Cracks / Wear / Damaged Change
CRANKSHAFT
1. Measure:
• Run out limit “C”
• Clearance of the con rod big end “D”
• Limit of play of the con rod little end “F”
Outside specifications Change
Use V blocks, the Comparator (90890 03097) and a feeler gauge.
Width between blades “A”:
41.90 ~ 42.00 mm
Eccentricity limit “C”:
0.03 mm
Clearance of con rod big end “D”:
0.015 ~ 0.026 mm
Free play of the con rod little end
“F”
0.20 ~ 0.61 mm
TACHOMETER GEAR
1. Inspect:
• Drive gear and driven gear
Damaged / worn Change
2. Check:
• Operation of the sender
Operation stiff Change
4-21
INSPECTION AND REPAIR
ENG
BEARINGS AND OIL SEALS
1. Inspect:
• Bearing
Perforated / Damaged Change
• Oil seal lips
Damaged / Worn Change
CRANKCASE
1. Thoroughly wash the halves of the crankcase with mild solvent.
2. Clean the whole surface of the joints and
the crankcase.
3. Inspect:
• Crankcase
Cracks / Damaged Change
• Oil supply conduits blocked Unblock
with compressed air
4-22
ASSEMBLING AND ADJUSTING THE ENGINE
ASSEMBLING AND ADJUSTING THE ENGINE
CRANKSHAFT
Crankshaft
Con rod
Bearing
Bearing
Seal
Seal
Piston
Rings
Pin
10 Circlip
11 Bearing
12 Key
13 Key
14 Traction gearing
15 Balancer
16 Bearing
17 Bearing
18 Gear
19 Key
A: CLEARANCE BETWEEN PISTON
AND CYLINDER
0.49 ~ 0.62 mm
D: CRANKSHAFT
B: PISTON RING END GAP:
0.15 ~ 0.30 mm
A: 41.90 ~ 42.0 mm
C: 0.03 mm
D: 0.015 ~ 0.026 mm
F: 0.20 ~ 0.61 mm
C: LATERAL CLEARANCE OF PISTON RING:
0.03 ~ 0.06mm
4-23
ENG
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
CAUTION
To protect the crankshaft from scratching
or facilitate the installation operation, apply
grease to the lips of the oil ring and engine
oil on each bearing
1. Position:
• Crankshaft installing tool
(90890 - 01274, 90890 - 01278)
2. Assemble:
• Crankshaft on the left-hand side of the
crankcase.
NOTE:
Hold the con rod at top dead centre with
one hand while you use your other hand to
turn the nut of the tool until the crankshaft
has gone all the way and touches the bearing.
4-24
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
SHIFT AND SELECTOR
SHIFT
Primary
5th gear
3rd gear
6th gear
2nd gear
Circlip
Circlip
Bearing
Bearing
10 Secondary
11 1st wheel gear
12 5th wheel gear
13 4th wheel gear
14 3rd wheel gear
15 6th wheel gear
16 2nd wheel gear
17 Circlip
18 Washer
19 Circlip
20 Washer
21 Washer
22 Circlip
23 Bearing
24 Bearing
25 Seal
26 Sprocket
27 Circlip
B: RUN OUT LIMIT OF THE PRIMARY SHAFT:
0.02 mm
A: RUN OUT LIMIT OF THE
SECONDARY SHAFT:
0.02 mm
4-25
ASSEMBLING AND ADJUSTING THE ENGINE
SELECTOR
Shift drum
Washer
Neutral
Spring
Ball
Shift fork 1
Shift fork 2
Shift fork 3
Shift fork guide bar 1
10 Shift fork guide bar 2
11 Washer
12 Nut
4-26
ENG
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
NOTE:
When you install the secondary shaft on the
crankcase pay attention to the lip of the oil
seal of the crankcase.
2. Install:
• Secondary shaft, primary shaft, cam of
the shift shaft, selector fork set, guide
bars, selector and balancer shaft in the
right-hand half of the crankcase.
NOTE:
It is highly important to follow the assembly
sequence as stated in the breakdown of the
“SHIFT AND SELECTOR” section.
3. Check:
• Operation of the selector
Operates incorrectly Repair
CRANKCASE
1. Apply:
• Yamaha Bond nº 4 paste (90890-05143)
on the sealing surfaces of the two halves.
2. Install
• Locators 3. Install the left hand crankcase gently into
the right. Gently tap the case in with a soft
hammer.
4-27
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
CAUTION
Before installing and tightening the crankcase securing screws, do not forget to
check if the shift works properly by
manually turning the selector cam in both
directions
4. Tighten
• Crankcase securing screws (following a
crisscross pattern)
Crankcase securing screws :
1.0 m • kg
5. Apply:
• 2 stroke engine oil to the crankshaft pin,
bearing and oil feed bore.
6. Check:
• Operation of the crankshaft and shift.
This works incorrectly repair
7. Install:
• Neutral switch
8. Install:
• Circlip • Sprocket • Circlip 4-28
ASSEMBLING AND ADJUSTING THE ENGINE
STARTER MOTOR
Starter motor
Screw
Magnetic flywheel
Screw
Nut
4-29
ENG
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
STARTER MOTOR
1. Install:
• Starter motor 2. Install:
• Coil plate in the crankcase
Coil screw:
0.9 m • kg
CAUTION
Install the coil holder plate so that the
marks on the plate and on the crankcase,
made during the dismantling process, coincide.
CDI MAGNETO
1. Install:
• Coil plate
2. Install:
• Key
• CDI flywheel • Nut 4-30
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
CLUTCH AND PRIMARY DRIVE GEARING
Primary drive gearing
Bush
O ring
Nut
Clutch housing
Thrust washer
Clutch boss
Friction disc
Clutch disc
10 Pressure plate
11 Spring
12 Screw with washer
13 Pusher plate
14 Conical washer
15 Conical washer
16 Nut
17 Pusher plate
18 Push rod 1
19 Tensor
20 Nut
21 Ball
22 Push rod 2
23 Push lever shaft
24 Spring
25 Flat washer
26 Seal
A: LIMIT OF FREE LENGTH OF CLUTCH
SPRING:
30.0 mm
B: LIMIT OF FRICTION DISC WEAR :
2.7 mm
C: LIMIT OF DISC WARPAGE:
0.05 mm
4-31
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
NOTE:
To tighten the CDI magneto nut use the flywheel holder 90890-01235 and without releasing this also tighten the nuts of the balancer
shaft and that of the crankshaft gear
CDI magneto nut:
5.2 m • kg
Crankshaft gear nut:
6.0 m • kg
1. Install:
• Washer • Tachometer gear • Washer 2. Install:
• Key • Driven gear of balancer • Washer • Nut 3. Install:
• O ring • Bush • Drive gear • Key • Primary transmission gear • Nut NOTE:
The driven and drive gears must have the two
marks aligned
4-32
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
4. Install:
• Conical spring washer • Washer • Primary drive gear • Washer • Clutch boss • Washer • Clutch boss nut 5. Tighten:
• Clutch boss nut
Use the universal clutch holder Clutch holder:
90890 - 04086
To hold the clutch boss
Clutch boss nut
7.5 m • kg
6. Install:
• Shaft assembly of the clutch push
lever • Push rod nº • Ball of the push rod
4-33
ASSEMBLING AND ADJUSTING THE ENGINE
7. Install:
• Clutch discs • Friction discs • Push rod nº 1 • Pressure plate • Washer • Nut • Clutch springs • Screws for securing the clutch spring ENG
NOTE:
• Install the clutch discs and the friction discs
alternately in the clutch boss starting and
ending with a friction disc
• Install the clutch discs so that each of these
is 120º offset with the previous one.
NOTE:
Line up the engraved mark of the clutch
boss with the arrow of the clutch pressure
plate.
Clutch spring securing screw:
0.4 m • kg
4-34
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
8. Adjusting the clutch lever:
• Loosen locknut • Tighten the screw until it reaches the
end
• Loosen the screw 1/4 turn
• Tighten the locknut SHAFT OF THE WATER PUMP, SHAFT OF
THE OIL PUMP AND RIGHT-HAND CRANKCASE COVER
1. Install:
• Locators • Gasket
2. Install:
• Washer 16
• Intermediate gearing 15
• Washer 14
• Clip 13
• Washer 12
• Oil pump shaft 11
• Washer 10
• Pin • Driven gear of oil pump • Clip • Water pump shaft • Washer • Pin • Driven gear of water pump • Washer • Clip 4-35
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
3. Install:
• Right-hand crankcase cover • Screws
NOTE:
Tighten the securing screws of the crankcase
cover following a crisscross pattern
Screws of the crankcase cover:
1.0 m • kg.
WATER PUMP COVER
1. Install:
• Water pump cover gasket
• Water pump cover
2. Install:
• Screws for water pump cover
Screws for the water pump cover:
0.5 m • kg
NOTE:
Use a new washer on the coolant drain screw
OIL PUMP
1. Install:
• Oil pump assembly
Pump securing screw:
0.7 m • kg
• Oil pump cover
Cover securing screw:
0.7 m • kg
2. Connect:
• Tube for oil supply to the carburettor
• Tube for oil inlet to the pump
3. Bleed:
• Lubrication pump (bleed screw 4-36
PISTON PIN AND PISTON
ENG
PISTON PIN AND PISTON
1. Apply:
• 2 stroke engine oil
To the piston pin, bearing, piston ring
slots and piston
NEW
2. Install:
• Con rod little end bearing
• Piston
• Piston pin
• Piston pin clip NOTE:
• The arrow marked on the piston must point
to the front of the engine
• Before installing the piston pin clip, cover
the crankcase with a clean cloth so that
neither the piston clip nor anything else can
fall inside the crankcase.
• Always use a new piston pin clip
4-37
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
CYLINDER HEAD AND CYLINDER
Cylinder
Spark plug
Water pipe
Head gasket
Head gasket
Nut
10 Flat washer
11 Cylinder
12 Cylinder gasket
13 Thermostat
A: SPARK PLUG GAP:
0.6 ~ 0.7 mm
C: LIMIT OF CYLINDER HEAD WARPAGE:
0.03 mm
B: STANDARD SPARK PLUG:
BR9ES (NGK)
2.0 m • kg
4-38
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
1. Install:
• Cylinder head gasket NOTE:
• Make sure that the mark and manufacturer
number engraved on the rings are on the top
side of these.
• Before installing the cylinder, apply a good
layer of 2 stroke engine oil to the piston
rings.
2. Install:
• Cylinder NOTE:
Install the cylinder with one hand while you
tighten the piston rings with the other.
3. Install:
• Locators (2 units)
• O rings
• Thermostat
4-39
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
s WARNING
Handle the thermostat with special care.
Never hold this tightly or drop it. If it falls
replace it with a new one.
5. Install:
• Cylinder head
• Washers
6. Tighten:
• Cylinder head nuts
Tightening torque for cylinder
head nuts:
2.2 m • kg
NOTE:
Tighten the cylinder head nuts in a crisscross
pattern.
7. Install:
• Thermocontact
8. Install:
• Reed valve assembly
NOTE:
Tighten the screws for securing the reed valve
in a crisscross pattern
Reed valve securing screw:
0.8 m • kg
9. Install:
• Carburetor
• Connect all the pipes (oil, water, etc.).
• Starter cable
10. Install:
• C.D.I. magnetic flywheel cover
INSTALLING THE ENGINE
When you install the engine, follow the removal process inversely.
Pay attention to the following points.
1. Install:
• Engine assembly screws
Engine assembly screws , , :
3.0 m • kg
4-40
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
2. Install:
• Drive chain NOTE:
After installing the drive chain adjust the tension of the chain. See “ADJUSTING CHAIN” in
Chapter 6.
3. Install:
• Crankcase cover 2 (left)
Screws for securing crankcase
cover 2
0.5 m • kg
• Output gear cover
Screws for securing output gear
cover
0.5 m • kg
• Shift cam
Shift cam screw.
0.6 m • kg
4. Install:
• Oil pump cover
Pump cover securing screw:
0.4 m • kg
• Spark plug
Spark plug:
2.0 m • kg
• Exhaust pipe
Screws for securing the exhaust
pipe to the chassis:
2.1 m • kg 3.0 m • kg • Springs • AIS pipe Screw for the clamp of the AIS
tube:
0. 4 m • kg
5. Add:
• Transmission oil
• Coolant
Transmission oil:
total: 0.82 L
Total amount of coolant:
0.7 L
4-41
ASSEMBLING AND ADJUSTING THE ENGINE
ENG
6. Inspect:
• Oil leaks
• Coolant leaks
7. Connect:
• Neutral cable
NOTE:
Before starting the engine up, bleed the lubrication system.
4-42
COOL
5
COOL
CHAPTER 5
COOLANT SYSTEM
CHANGING THE COOLANT ……………………………………………………5-1
WATER PUMP ……………………………………………………………………5-3
DISMANTLING …………………………………………………………………5-4
INSPECTION……………………………………………………………………5-5
ASSEMBLY ……………………………………………………………………5-6
THERMOSTAT AND RADIATOR ………………………………………………5-8
INSPECTION …………………………………………………………………5-9
ASSEMBLY ……………………………………………………………………5-10
COOLANT
COOL
COOLING SYSTEM
COOLANT
CHANGING THE COOLANT
s WARNING
Do not remove the radiator cap while this
and the engine are hot. Boiling liquid and
vapour could emerge with consequent danger of serious injury. When the engine has
cooled off, open the radiator tap as follows:
place a thick cloth, for example a towel,
over the cap and turn this as far as it will go,
slowly, to the left. This procedure will let
any residual pressure release. When the
whistling sound has stopped, tighten the
cap downwards making it turn left at the
same time to open it
1. Place an open recipient under the engine.
2. Wait until the radiator cools down.
3. Take off:
• Radiator cap 4. Remove:
• Drain screw 5. Drain:
• Coolant (completely)
NOTE:
Fully wash out the cooling system with clean
water.
6. Inspect:
• Gaskets (drain screw)
Damaged Change
7. Tighten:
• Drain screw (water pump cover)
5-1
COOLANT
COOL
Drain screw (water pump cover):
1.4 m • kg
8. Fill up with:
• Coolant liquid (in the radiator)
Recommended coolant:
High quality ethylene glycol antifreeze solution containing anticorrosive materials for aluminium
alloy engines.
Proportion for mixing coolant and
water:
50% / 50%
Total volume:
0.71 L
Capacity of expansion tank:
0.42 L
From “LOW” level to “FULL” level:
0.18 L
CAUTION
Water with impurities is harmful for the
engine. If you cannot get distilled water, use
boiled water.
Do not mix more than one type of ethylene
glycol antifreeze containing anti-corrosives
for aluminium engines.
9. Install:
• Radiator cap
10. Start the engine up for a few minutes.
11. Inspect:
• Coolant level in the radiator
Low level Fill up (to the top of the
radiator)
12. Fill up with:
• Coolant
• Top up the coolant up to the “FULL”
level in the expansion tank.
13. Install:
• Radiator cap
14. Inspect:
• Coolant system
Leakage of coolant Repair
CAUTION
Before starting up the engine, always check
the coolant level and see if there are any
leakages of this.
5-2
WATER PUMP
COOL
COOLING SYSTEM
WATER PUMP
Impeller shaft
Oil seal
Pin
Washer
Circlip
Impeller shaft gear
Cover of the water pump body
Locator
Gasket
10 Screw
11 Screw
12 Drain screw
13 Gasket
14 Connection
15 O ring
16 Screw
A: USE A NEW ONE
1.0 m • kg
1.6 m • kg
A: USE A NEW ONE
5-3
WATER PUMP
COOL
DISMANTLING
NOTE:
There is no need to dismantle the water pump
unless anomalies have been observed, such
as excessive variations in temperature and/or
volume of the coolant liquid, its decolouring or
a milky look to the transmission oil.
1. Drain:
• Crankcase
See the section on “CHANGING THE
TRANSMISSION OIL” in CHAPTER 3.
• Cooling system
See the section on “CHANGING THE
COOLANT” in CHAPTER 3.
2. Remove:
• The output hose 5-4
WATER PUMP
COOL
3. Dismantle:
• The cover of the water pump body • The crankcase cover CAUTION
Remove the coolant from the water pump
taking care that this does not splash the
autolube pump.
4. Dismantle.
• The circlip • The gear of the impeller shaft • The flat washer 5. Dismantle:
• The pin • The flat washer 6. Dismantle:
• The impeller shaft 7. Eliminate any deposits incrusted on the
shaft and the body of the water pump
INSPECTION
1. Inspection
• The impeller
Cracks/wear/damage
5-5
replace
COOL
WATER PUMP
2. Inspect:
• The gear of the impeller shaft
Cracks/Wear/Damage replace
3. Inspect:
• The seal Wear / Damage
Replace
Replacement steps:
• Remove the seal from the crankcase
cover, tapping this lightly outwards.
• Install the new seal, with the “WATER
SIDE” mark outwards.
NOTE:
• Apply light lithium grease to the outside of
the oil seal.
• Press install the seal until it comes into
contact with the base
ASSEMBLY
Apply the “DISMANTLING” procedure
inversely, bearing in mind the following
points:
1. Apply:
• Light lithium grease to the lips of the seal
and to the impeller shaft
5-6
WATER PUMP
COOL
2. Install:
• The impeller shaft Turn the shaft during assembly
NOTE:
Proceed with care so as not to damage the lip
of the seal and so that the spring does not
come out of position
3. Install:
• The crankcase cover (right hand)
• The cover of the water pump body
Screw (crankcase cover):
0.5 kg • m
Screw (water pump body cover):
0.5 kg • m
CAUTION
Always use new gaskets
4. Fill up:
• The transmission oil
See the section on “CHANGING THE
TRANSMISSION OIL” in CHAPTER 3.
• The coolant. See the section on “CHANGING THE COOLANT” in Chapter 3.
5. Bleed the air:
• Autolube pump
• See the section on “BLEEDING THE AIR
FROM THE AUTOMATIC MIXING
PUMP” in CHAPTER 3.
5-7
THERMOSTAT AND RADIATOR
COOL
THERMOSTAT AND RADIATOR
Radiator
Cap
Stop
Bolt
Washer
Protector ring
Bush
Protector ring
Screw
10 Washer
A: OPENING PRESSURE OF THE RADIATOR CAP
0.75 ~ 1.05 KG / CM2
B: COOLANT CAPACITY
Including all the conduits: 0.7 L
C: THERMOSTAT OPENING TEMPERATURE:
98 ºC
0.8 m • kg
5-8
COOL
THERMOSTAT AND RADIATOR
INSPECTION
1. Inspect:
• The radiator core
Obstruction Eliminate this with compressed air, blowing from the rear of the
radiator.
Squashed fins repair / replace
2. Inspect:
• The inlet hose
Cracks / damage
• Output sleeve
Cracks / Damage
Replace
Replace
3. Measure:
• The opening pressure of the radiator cap
Radiator cap opening pressure:
0.75 ~ 1.05 kg/cm2
Measurement steps:
• Connect the tester of the cooling system and the adapter to the radiator cap
.
Cooling system tester:
90890 - 01325
Adapter:
90890 - 01352
• Apply the specified pressure for ten
seconds and make sure that this does not
drop.
4. Inspect:
• The thermostat
See the section on “DISMANTLING THE
ENGINE” in CHAPTER 4 CYLINDER
HEAD AND CYLINDER
The valve does not open replace
5-9
THERMOSTAT AND RADIATOR
COOL
Inspection steps:
• Hang the thermostat in a recipient • Submerge a reliable thermometer in water
• Heat up the water slowly
• Observe the thermometer without ceasing to agitate the water
NOTE:
The thermostat is sealed and rating this is a
job for a specialist. If you have any doubts
about its accuracy, replace it. A faulty valve
could cause very harmful overheating or overcooling.
Screws (of the thermostat):
2.0 kg • m
ASSEMBLY
Follow the same procedure as in “DISMANTLING” but inversely.
Take into account the following points.
1. Tighten:
• The screws (of the thermostat)
2. Assemble:
• The radiator
3. Tighten:
• The screws (radiator)
Screws (radiator):
0.6 kg • m
5-10
THERMOSTAT AND RADIATOR
COOL
4. Fill up:
• The coolant
See the section on “CHANGING THE
COOLANT” in CHAPTER 3.
5. Inspect:
• The cooling system
Reduce the pressure (leaks)
as required.
Repair
Inspection steps:
• Connect the cooling system tester to
the radiator
Cooling system tester:
90890 - 01325
• Apply 1.0 kg/cm2 pressure
• Measure the pressure with the manometer.
6. Install:
• The seat
5-11
CARB
6
CARB
CHAPTER 6
CARBURATION
CARBURETOR ……………………………………………………………………6-1
REMOVAL ………………………………………………………………………6-2
DISMANTLING …………………………………………………………………6-2
INSPECTION……………………………………………………………………6-2
ASSEMBLY ……………………………………………………………………6-3
INSTALLATION …………………………………………………………………6-3
ADJUSTING THE PETROL LEVEL …………………………………………6-3
REED VALVE ………………………………………………………………………6-4
REMOVAL ………………………………………………………………………6-4
DISMANTLING …………………………………………………………………6-4
INSPECTION……………………………………………………………………6-4
ASSEMBLY ……………………………………………………………………6-5
INSTALLATION …………………………………………………………………6-6
CARBURETOR
CARB
CARBURATION
CARBURETOR
Carburetor
Carburetor cover
Needle valve
Float chamber
Main jet
Diffuser
10 Idling jet
14
13
15
24
27
26
Spring
Casing
Choke jet
Idling screw
Float pin
Float
SPECIFICATIONS
Main jet (M.J.)
Pilot air screw (P.A.S.)
Fuel level (F.L.)
Idling speed
6-1
# 88
2 1/8
13 ~14 mm
1850 ± 150
CARBURETOR
CARB
REMOVAL
1. Remove:
• Carburetor assembly
See the section on engine removal
DISMANTLING
1. Remove:
• Idling stop screw 2. Remove:
• Float chamber • Float pin • Float • Water valve • Gasket • Main jet • Idling jet • Choke jet INSPECTION
1. Inspect:
• Carburetor body
Dirty clean
NOTE:
Use a petroleum type solvent for cleaning.
Clean all the holes and jets with compressed
air.
2. Inspect:
• Valve seat / float valve Wear / Dirt Change
NOTE:
Always change the float chamber valve and
valve seat as a set.
6-2
CARBURETOR
3. Inspect
• Jets
Wear / Dirt
CARB
Change / Clean
4. Inspect:
• Plunger • Wear/damage Replace
5. Check:
• Free movement
Difficulty Change
Insert the plunger into the carburetor
body.
6. Inspect
• Float
Damaged
• O ring
Damaged
Change
Change
ASSEMBLY
1. Install:
• Follow the dismantling procedure inversely
INSTALLATION
1. Install:
• Carburetor assembly
Apply the removal procedure inversely
ADJUSTING THE FUEL LEVEL
1. Measure:
• Float height
Outside specifications Service
Float height (FH) :
13 -14 mm
6-3
CARBURETOR / REED VALVE
CARB
Adjustment steps:
• Take out the carburetor
• Inspect the valve seat and the float chamber valve.
• If either of the two parts is worn, change
both.
• Check the petrol level again
REED VALVE
REMOVAL
1. Remove:
• Reed valve assembly
See the engine removal section
DISMANTLING
1. Remove:
• Reed valve stop • Reed valve INSPECTION
1. Inspect:
• Rubber gasket
Deteriorated Change
• Reed valve
Ageing / cracks Change
Inspection steps:
• Visually inspect the reed valve
NOTE
A proper reed valve should install in aligned
or almost aligned with the neoprene base.
•In the event of any doubt about sealing
apply suction to the part in the carburetor
mounting
• Any leaks must be moderate
6-4
REED VALVE
CARB
2. Measure:
• Height of the valve stop Outside specifications Adjust/ change the stop of the valve
Height of the valve stop:
6.28 mm
NOTE:
If the height is 0.4 mm greater or lower than
what is specified, change the valve stop.
3. Measure:
• Curve limit of the reed valve Outside specifications Change
Curve limit of the reed valve:
0.4 ± 0.3 mm
ASSEMBLY
When the reed valve is fitted, apply the dismantling procedure inversely.
1. Install:
• The reed valve
• The reed valve stop.
NOTE:
Pay attention to the cut at the lower corner of
the reed and the reed stop.
2. Tighten:
• Safety screws of the reed valve
Safety screws of the reed valve:
0.1 m • kg
LOCTITE ®
NOTE:
Tighten each screw gradually to prevent deformations
6-5
REED VALVE
CARB
INSTALLATION
To install the reed valve, follow the procedure
for removal inversely. Pay attention to the following points.
1. Install:
• A new gasket
2. Tighten:
• Safety screws of the reed valve body.
Safety screws of the reed valve
body:
0.8 m • kg
NOTE:
Tighten each screw gradually to prevent deformation
6-6
CHAS
7
CHAS
CHAPTER 7
CHASSIS
FRONT WHEEL …………………………………………………………………7-1
DISMANTLING …………………………………………………………………7-2
INSPECTION……………………………………………………………………7-2
ASSEMBLY ……………………………………………………………………7-5
REAR WHEEL ……………………………………………………………………7-6
DISMANTLING …………………………………………………………………7-7
INSPECTION……………………………………………………………………7-7
ASSEMBLY ……………………………………………………………………7-8
FRONT BRAKE …………………………………………………………………7-10
CHANGING THE BRAKE PADS ……………………………………………7-11
DISMANTLING THE CALIPER………………………………………………7-13
DISMANTLING THE BRAKE PUMP ………………………………………7-14
INSPECTING AND REPAIRING THE BRAKE ……………………………7-15
ASSEMBLY ……………………………………………………………………7-17
FRONT FORK ……………………………………………………………………7-20
REMOVAL ……………………………………………………………………7-21
DISMANTLING ………………………………………………………………7-22
INSPECTION …………………………………………………………………7-22
ASSEMBLY ……………………………………………………………………7-24
INSTALLATION ………………………………………………………………7-28
STEERING HEAD AND HANDLEBARS ……………………………………7-29
DISMANTLING ………………………………………………………………7-31
INSPECTION …………………………………………………………………7-31
ASSEMBLY ……………………………………………………………………7-34
REAR SHOCK ABSORBER AND SWINGING ARM ………………………7-40
OBSERVATIONS ON HANDLING …………………………………………7-41
OBSERVATIONS ON ELIMINATION ………………………………………7-41
DISMANTLING ………………………………………………………………7-42
INSPECTION …………………………………………………………………7-44
ASSEMBLY ……………………………………………………………………7-44
CHAIN AND TRANSMISSION CROWN WHEEL …………………………7-46
DISMANTLING ………………………………………………………………7-47
INSPECTION …………………………………………………………………7-48
ASSEMBLY ……………………………………………………………………7-49
FRONT WHEEL
CHAS
CHASSIS
FRONT WHEEL
AIR PRESSURE IN THE TIRES
Front wheel
Spacer
Bearing
Bearing
Seal
Bush
Axle
BASIC WEIGHT:
WITH OIL AND
FULL TANK
124.2 kg. (272 pounds)
MAXIMUM LOAD *
195 kg. (428 pounds)
COLD TIRE
PRESSURE
FRONT
REAR
UP TO 90 KG
(198 pounds) load *
1.8 kg/cm2
2.0 kg/cm2
FROM 90 kg (198 pounds) ~
MAX. LOAD
1.9 kg/cm2
2.3 kg/cm2
* Load means the total weight of equipment, driver and accessories
1
65 Nm (6.5 m • kg)
7
3 3
A: TIRE SIZES
100/80 ~ 17
4
B: WHEEL SIZES :
MT 2.75 X 17
C: RUN OUT LIMIT OF THE WHEEL:
2
D: VERTICAL :
1.0 mm
E: LATERAL:
1.0 mm
7-1
5 6
FRONT WHEEL
CHAS
DISMANTLING
s WARNING
Support the motorcycle firmly to avoid any
risk of falling over.
1. Lift up the front wheel, placing an appropriate support under the engine.
2. Remove :
• The screws (brake caliper) NOTE:
Do not press the brake lever without the wheel
being fitted on the motorcycle since if you do
the pads would be in contact.
3. Loosen:
• The pressure bolt • The screw (wheel axle) 4. Dismantle
• The axle of the front wheel
• The front wheel
INSPECTION
1. Inspect
• The tire
The running strip of the tire has transversal strips (minimum tread pattern depth)
/ Cracks Replace
Minimum depth of wear:
1.6 mm
Depth of tread pattern
Lateral wall
Wear indicator
7-2
FRONT WHEEL
CHAS
2. Get rid of any corrosion on the parts.
3. Inspect:
• The front axle
Make the axle turn on a flat surface
Deformations Replace
s WARNING
Do not attempt to straighten the axle if this
is deformed
4. Inspect:
• The wheel
Cracks/Deformations/Warping
Replace
5. Measure:
• The run out of the wheel
This does not coincide with what is specified Check the play of the wheel
and bearing.
Run out limit of the wheel:
Radial :
2.0 mm
Lateral : 2.0 mm
6. Check
• The wheel bearings
The bearings have some play at the
wheel hub or are hard to turn Replace
Replacing steps:
• Clean the outside of the wheel hub
• Dismantle the bearing with a universal
extractor
• Install the new bearing
NOTE:
Use a socket wrench the right size for the
outer diameter of the bearing race.
7-3
RUEDA DELANTERA
CHAS
CAUTION
Do not tap the inner race of the bearing.
Contact should only be with the outer
race.
7. Check:
• The wheel balance
If the wheel stops at the same point
again, after several light turns, the static
balance is not correct.
Wheel unbalanced. Install the relevant
balancing counterweights at the lightest
part (top).
NOTE:
Balance the wheel with the brake disc fitted.
s WARNING
• After installing a tire, drive carefully until it
adapts to the wheel properly. If this is not
done there could be an accident possibly
damaging the motorcycle and injuring the
rider.
• After repairing or replacing a tire, tighten the
locknut of the valve to the specified torque
Valve locknut:
0.15 kg • m
7-4
FRONT WHEEL
CHAS
INSTALLING
Repeat the dismantling procedure, inversely.
Take into account the following points:
1. Apply:
• Lithium grease
Lightly grease the oil seal and the gearing unit
2. Assemble:
• The speedometer sensor.
NOTE:
Make sure that the projections on the inside of the sensor coincide with the flat sides
of the wheel hub.
3. Assemble:
• The front wheel assembly
NOTE:
Make sure that the projection of the fork
cylinder fits in correctly with the sensor
positioning slot.
4. Tighten:
• The wheel axle
• The pressure bolt
• The screws (brake caliper)
Wheel axle:
6.5 m • kg
Pressure bolt:
2.3 km • kg
Screws (brake caliper):
3.5 m • kg
7-5
REAR WHEEL
REAR WHEEL
Rear wheel
Spacer
Bearing
Bearing
Rear wheel sprocket
Washer
Screw
Seal
Seal
10
11
12
13
14
15
16
17
18
Chain
Coupling
Wheel axle
Chain tensioner
Screw
Nut
Nut
Key
Bush
A: TIRE SIZE:
130 / 70 - 17
B: WHEEL SIZE:
3.50 MT X 17
C: RUN OUT LIMIT OF THE WHEEL
E: VERTICAL: 2.0 mm (0.08 inch)
F: LATERAL: 2.0 mm (0.08 inch)
G: USE A NEW ONE
7-6
19 Bush
CHAS
REAR WHEEL
CHAS
DISMANTLING
s WARNING
Support the motorcycle firmly so it does not
fall over
1. Lift the rear wheel and place a suitable
support under the engine.
2. Dismantle:
• The pin • The nut (wheel axle) • The chain tensioner • The wheel axle
3. Dismantle:
• The rear wheel
NOTE:
Before removing the rear wheel, push this
forwards and dismantle the transmission
chain.
NOTE:
Do not press the brake lever without the wheel
being fitted as this would mean the pads
would be in contact
INSPECTION
1. Inspect:
• The tire
• The rear wheel axle
• The wheel
See the section on “FRONT WHEEL INSPECTION”
7-7
REAR WHEEL
CHAS
2. Measure:
• The run out of the wheel
See the section on “FRONT WHEEL INSPECTION”
3. Check:
• The wheel bearings
• The wheel balancing
See the section on “FRONT WHEEL INSPECTION”
• The brake disc
See the section “FRONT WHEEL - INSPECTION”
ASSEMBLY
Apply the same procedure as for dismantling
but inversely.
Take into account the following points:
1. Apply:
• Lithium grease
Apply the grease lightly to the lips of the
oil seal
2. Adjust:
• The transmission chain tension with the
rear wheel resting on the ground
Transmission chain tension:
20 ~ 25 mm
• See the section on “TIGHTENING THE
TRANSMISSION CHAIN” in CHAPTER
3.
3. Tighten:
• The axle nut
• The locknut (wheel axle)
Nut (wheel axle)
9.0 m • kg
Screws (brake caliper):
3.0 m • kg
7-8
REAR WHEEL
CHAS
4. Install:
• The pin (a new one) s WARNING
Always use a new pin for the wheel axle.
5. Adjust:
• The free play of the brake pedal
See the section on “ADJUSTING THE
REAR BRAKE” in CHAPTER 3.
Free play of the brake pedal:
10 ~ 15 mm
7-9
FRONT BRAKE
CHAS
FRONT BRAKE
Disc brake
Screw
Complete brake caliper
Complete pistons
Brake pads
Drain screw
Pin
Through screw
Seal
10 Screw
A: CHANGE AS AN ASSEMBLY
B; WEAR LIMIT OF THE BRAKE PADS:
0.5 mm
7-10
C: WEAR LIMIT
BRAKE DISC:
3.5 mm
OF
THE
FRONT BRAKE
CHAS
CAUTION
The components of the disk brake rarely
need to be dismantled. Do not do so unless
this is absolutely necessary. If any of the
hydraulic coupling components of the system is disconnected the whole system must
be dismantled to drain this, clean it and
then fill it and bleed it properly. Do not use
solvents to clean the components.
Solvents make seals swell and deform.
Only use clean brake liquid for cleaning.
Take care with brake liquid, as this is harmful for the eyes and damages painted surfaces and plastic parts.
CHANGING THE BRAKE PADS
NOTE:
To change the brake pads the line does not
need to be taken off.
1. Dismantle:
• The screws (brake caliper) • The retaining screw • The retaining pin • The pads
7-11
FRONT BRAKE
a
CHAS
2. Measure:
• The thickness (a) of the pads:
If this does not match the value specified
replace
◗
M
NOTE:
• Replace the pads as a set, if you find that
any of them is worn beyond the limit.
Wear limit:
0.5 mm
3. Firmly connect a suitable tube 1 to the
caliper bleeding screw. Then insert the
other end of the tube into an open recipient.
4. Unscrew the bleed screw of the caliper
and press the piston with your finger to
make it go into this.
5. Tighten:
• The caliper bleeding screw
Caliper bleeding screw:
0.5 m • kg
6. Assembly:
• The brake pads (new)
• The retaining screw
• The retaining pin
7-12
FRONT BRAKE
CHAS
7. Install:
• The screws (brake caliper)
Screws (brake caliper):
3.5 kg • m
8. Inspect:
• The level of the brake liquid
See the section on “INSPECTING THE
BRAKE LIQUID” in CHAPTER 3.
min.
9. Check:
• The operation of the brake lever. If this is
soft or spongy bleed the brake system.
See the section on “BLEEDING THE
AIR” in CHAPTER 3.
DISMANTLING THE CALIPER
1. Remove:
• The coupling screw • The copper washers NOTE:
Place the open end of the line in a recipient
and carefully pump to remove the old liquid.
7-13
FRONT BRAKE
CHAS
2. Dismantle:
• The screws (brake caliper)
• The brake pads
See the section on “CHANGING THE
BRAKE PADS”
3. Dismantle:
• Pistons
Dismantling steps:
• Use a cloth to block the piston on the
right-hand side.
• Blow compressed air in through the coupling hole of the line to force the piston on
the left-hand side out of the caliper.
• Insert the piston a few mm and lock it with
a cloth to prevent it from getting out.
• Repeat the previous steps with the piston
for the right-hand side, to force it out of
the caliper.
s WARNING
• Never attempt to take the piston out of
the caliper by levering this with a tool.
• Cover the piston with a cloth
• Take care to avoid injuries by the piston
being ejected out of the cylinder.
4. Remove:
• The screws • The pistons
• The seals
DISMANTLING THE BRAKE PUMP
NOTE:
Remove the brake liquid before dismantling
the brake pump.
7-14
CHAS
FRONT BRAKE
1. Dismantle:
• The brake switch • The brake lever • The coupling screw • The copper washers 2. Dismantle:
• The pump cover • The rubber seal
• The pump 3. Dismantle:
• The circlip • The set of pump components INSPECTION AND REPAIR
Recommended schedule for replacing the
brake components:
Pads
As required
Piston seals and
dustcover
Every two years
Lines
Every four years
Brake lines
Change only when
the brake is dismantled
s WARNING
The internal items should be cleaned only
with unused brake liquid. Do not use solvents because these would make the seals
expand and deform
7-15
FRONT BRAKE
CHAS
1. Measure:
• The brake pads (thickness) (a)
Out of specification replace
◗
M
a
NOTE:
• Change the pads as a set, whenever any of
these is worn down beyond the limit.
Wear limit:
0.5 mm
2. Inspect:
• The pistons of the caliper Rusting / Wear / Damage Replace
s WARNING
Change the piston seals whenever the caliper is dismantled.
3. Inspect:
• Set of pump components • Pump body Scratching / Wear Replace
• Brake line
Cracks / Wear / Damage Replace
Maximum deviation /A/:
0.15 mm
Minimum disc thickness /B/:
3.5 mm
A
4. Inspect:
• The brake disc
If this does not match the value specified
Replace
B
7-16
FRONT BRAKE
CHAS
ASSEMBLY
s WARNING
• All the internal components must be cleaned only with new brake liquid.
• The internal items must be lubricated with
brake liquid when assembled.
Brake liquid:
DOT nº 4
• Change the piston seals whenever the
caliper is dismantled.
1. Assemble:
• The seals
• The pistons
• The screws
2. Assemble:
• The retaining pin • The retaining screw • The brake caliper See the section on “CHANGING THE
BRAKE PADS”
Screw (brake caliper):
3.5 kg • m
3. Assemble:
• The set of pump components • The circlip 7-17
FRONT BRAKE
CHAS
4. Assemble:
• The dust seal • The brake pump Screws (pump support) :
0.9 kg • m
5. Assemble:
• The line • The copper washers • The coupling screw Coupling screws:
2.6 kg • m
s WARNING
Always use new copper washers
6. Assemble:
• The brake switch • The brake lever NOTE:
Apply lithium soap grease to the brake lever
rotation spindle
7-18
FRONT BRAKE
CHAS
7. Fill up:
• Brake liquid
Recommended brake liquid:
DOT nº 4
CAUTION
The brake liquid could erode painted surfaces and plastic parts. Always clean any
liquid spilt.
s WARNING
• Use only brake liquid of the specified quality: otherwise the rubber seals could
deteriorate and give rise to leaks and
reduction of the braking efficiency.
• Always fill up with brake liquid of the
same type: mixing liquids could give rise
to harmful chemical reactions and reduce
efficiency.
• Take care that water does not get into the
master cylinder when filling up. Water
considerably reduces the boiling temperature of the liquid and could give rise to
obstruction through bubbles.
8. Assemble:
• The rubber seal
• The pump cover Screw (pump cover):
0.2 kg • m
9. Bleed:
• The air
See the section on “BLEEDING THE
AIR” in CHAPTER 3.
7-19
FRONT FORK
CHAS
FRONT FORK
Rubber plug
Circlip
Plug screw
O ring
Fork spring
Ring of the damper rod
Damper rod (full cylinder)
Rebound spring
Inner tube
10
11
12
13
14
15
16
17
18
Tapered spindle
Dust sealing plug
Retaining clip
Oil seal
Guide bush
Outer pipe
Draining screw
Screw (Damper rod)
Steering axle
A: OIL CAPACITY OF THE FORK (EACH
LEG): 235 cm2
B: OIL LEVEL IN THE FORK (FROM THE
TOP OF THE INNER TUBE FULLY COMPRESSED WITHOUT THE FORK
SPRING):
154 mm
C: RECOMMENDED OIL: FORK OIL
“10 WT”
E: USE A NEW
ONE
3.0 m • kg
E: USE A NEW ONE
D: FREE HEIGHT OF THE
FORK SPRING (LIMIT):
515 mm
E: USE A
NEW ONE
2.4 m • kg
7-20
FRONT FORK
CHAS
REMOVAL
s WARNING
Stand the motorcycle up firmly so that there
is no risk of it falling over.
1. Lift up the front wheel placing an appropriate support under the engine.
2. Dismantle:
• The front wheel
See the section on “DISMANTLING THE
FRONT WHEEL”
3. Dismantle:
• The front mudguard
4. Dismantle:
• The lever (left-hand) • The lever (right-hand) 5. Loosen:
• The clamp screw (left-hand) • The clamp screw (right-hand) 6. Loosen:
• The clamp screw (lower shank)
s WARNING
Hold the fork before loosening the clamp
screw
7-21
FRONT FORK
CHAS
NOTE:
When the fork legs are dismantled, also remove the screws (brake line clamp) and odometer cable.
7. Dismantle:
• The front fork
DISMANTLING
1. Remove:
• The rubber plug
• The clip
• The plug
• The fork spring
Dismantling steps:
• Hold the fork leg in a vertical position
• Hold the inner tube in a vice with soft
clamps
CAUTION
Do not damage the surface of the internal tube.
• Apply pressure to the plug with a suitable bar
• Keep the plug in position and remove
the clip with a fine screwdriver.
• Remove the plug and the fork spring
.
• Install a tray for the oil under the fork,
place this upside down and drain out the
oil.
7-22
FRONT FORK
CHAS
2. Drain:
• The oil out of the fork
3. Remove:
• The dust sealing cover • The retainer clip Use a fine screwdriver and take care not
to scratch the inner tube.
4. Remove:
• The screw (damper rod)
Use the fixing tool and the “T” tool to
lock the damper rod.
“T” tool
90890 - 01326
Fixing tool:
90890 - 01294
5. Dismantle:
• The inner tube
• The damper rod 6. Dismantle:
• The conical spindle • Guide bush • Oil seal CAUTION
When dismantling the oil seal and the guide
bush, do not scratch the wall of the outer
tube.
7-23
FRONT FORK
CHAS
INSPECTION
1. Inspect:
• The inner tube Scratching / Deformations
Replace
s WARNING
Do not try to straighten the inner tube if this
is bent, as it could be dangerously weakened.
• Outer tube Scratching / Deformations / Damage
Replace
• Fork spring If this exceeds the limit specified
Replace
Free height of the fork spring:
(limit): 508 mm
2. Inspect:
• The damper rod
Wear / Damage Replace
Dirt Blow all the items with compressed air
3. Inspect:
• The O ring (of the plug) • The tapered spindle Damage Replace
ASSEMBLY
Apply the same procedure as for “DISMANTLING” but inversely.
Take into account the following points.
7-24
FRONT FORK
CHAS
NOTE:
• When putting the fork back on, make sure
that you replace the following items with new
ones.
• Guide bush
• Oil seal
• Dust protection seal
• Make sure that all the components are clean
before installing these again.
1. Install:
• The fork spring • The damper rod Let the rod slide slowly along the tube
until it comes out of the bottom.
• Tapered spindle Install the tapered spindle over the damper rod coming out at the end of the
inner tube.
2. Install:
• The inner tube in the cylinder (outer tube)
3. Tighten:
• The screw (damping pipe)
Use the fixing tool and the “T” tool to lock the damper rod.
“T” tool :
90890 - 01326
Fixing tool:
90890 - 01294
Screw (damper rod):
2.4 kg • m
LOCTITE®
7-25
FRONT FORK
CHAS
4. Install:
• The guide sleeve Use the counterweight for installing fork
4 seals and the adapter 5.
Inner tube
Outer tube
Counterweight for installing the
fork seals:
90890 - 01367
Adapter:
90890 - 01400
5. Install:
• The oil seal (new)
Use the counterweight for installing the
fork seals and the adapter.
Counterweight for installing the
fork seals:
90890 - 01367
Adapter:
90890 - 01400
6. Fill up:
• the fork
Capacity of fork oil:
235 cm2
Type:
10W or equivalent fork oil
NOTE:
After filling the fork up with oil, pump this
slowly up and down to distribute this.
7-26
FRONT FORK
CHAS
7. Measure:
• The oil level (a)
If this does not coincide with the value
specified add or remove oil.
Oil level:
154 mm
Measurements from the top of the
inner tube.
NOTE:
• To measure the oil level, thoroughly check
the inner tube, without the fork spring.
• Install the fork in vertical position.
8. Install:
• The fork spring
• The stop ring
Installation steps:
• Hold the fork leg up vertically
• Set the inner pipe in a vice with soft
clamps
CAUTION
Avoid damaging the surface of the inner
tube.
• Install the fork spring 1 in the inner tube.
NOTE:
Install the fork spring with the side with
narrower aperture upwards.
• Inspect the O ring (of the plug). If this is
damaged, replace this.
• Install the plug onto the spring; press
the plug with a suitable bar.
• Install the plug and place the elastic ring
in the inner tube.
7-27
FRONT FORK
CHAS
INSTALLING
Use the “EXTRACTION” procedure inversely.
Take into account the following points.
1. Install:
• The fork
Provisionally tighten the clamp screws of
the handlebars.
NOTE:
Maintain the inner tube.
2. Tighten:
• The (handlebar) clamp screws • The clamp screws (upper shank of the
handlebar) (Handlebar) clamp screws:
2.0 kg • m
Clamp screws (upper shank of the
handlebar):
2.0 kg • m
3. Tighten:
• The clamp screw (lower shank) Clamp screw (lower shank):
3.0 kg • m
4. Install:
• The front mudguard
Screws (front mudguard):
0.8 kg • m
5. Install:
• The front wheel
See the section on “FRONT WHEEL FITTING”
Wheel axle:
7.4 kg • m
Screws (brake caliper):
3.5 kg • m
7-28
STEERING HEAD AND HANDLEBARS
CHAS
STEERING HEAD AND HANDLEBARS
HANDLEBARS
Handlebar (left-hand)
Handlebar (right-hand)
Handlebar counterweight
Guide tube of the acceleration cable
Rubber twist grip
Set of throttle cable
and mixing pump
10 Clutch cable
13 Tensor
14 Locknut
2.0 m • kg
0.9 m • kg
2.0 m • kg
7-29
STEERING HEAD AND HANDLEBARS
CHAS
STEERING HEAD
Upper race of the bearing
Lower race of the bearing
Ball bearing
Cover of the ball bearing race
Steering adjustment nut
Upper shank of the handlebar
Steering nut
5.4 m • kg
A: BEARING DIMENSIONS:
1/4 inch
NUMBER OF BALLS:
LOWER: 19 units
UPPER: 19 units
B: TIGHTENING STAGES:
• Tighten the annular nut:
2.0 kg • m
• Unscrew one turn
• Tighten this again:
1.0 kg • m
2.0 m • kg
7-30
STEERING HEAD AND HANDLEBARS
CHAS
DISMANTLING
s WARNING
Stand the motorcycle up firmly to prevent it
from falling over
1. Lift the front wheel up installing an appropriate support under the engine.
2. Dismantle:
• The front wheel
See the section on “FRONT WHEEL DISMANTLING”
3. Remove:
• The screws (brake pump support) 4. Dismantle:
• The counterweight of the end of the
handlebar (right-hand) • The switch of the handlebar on the righthand side • The throttle cable • The throttle twist grip (right-hand) 5. Loosen:
• The locknut • The tensor 6. Dismantle:
• The clutch cable 7. Dismantle:
• The switch of the handlebar on the lefthand side • Twist grip (left-hand) • Support of the clutch lever • The handlebar counterweight (left-hand)
7-31
STEERING HEAD AND HANDLEBAR
CHAS
8. Loosen:
• The clamp screws (handlebars) 9. Remove:
• The screws (handlebars) 10. Dismantle:
• The handlebars (left and right-hand)
11. Dismantle:
• The fairing
See the section on “REMOVING THE
FAIRING”
12. Dismantle:
• The fork
See the section on “FRONT FORK REMOVAL”
13. Dismantle:
• The rear-view mirrors
14. Disconnect:
• The headlight connectors
15. Remove:
• The front of the fairing
16. Dismantle:
• The clamp of the brake line 17. Dismantle:
• The upper crown 7-32
STEERING HEAD AND HANDLEBARS
CHAS
18. Remove:
• The ring nut Use the wrench for ring nuts Wrench for annular nuts :
90890 - 01403
WARNING
Support the steering axle so that this cannot fall
19. Dismantle:
• The cover of the bearing races • The upper race of the bearing • The balls 20. Dismantle:
• The steering axle • The ball bearings 7-33
STEERING HEAD AND HANDLEBARS
CHAS
INSPECTION
1. Wash the ball bearings and races with solvents.
2. Inspect:
• The ball bearings
• The bearing races
Pitting / Damage Replace
NOTE:
Always replace the bearings and races as a set
Replacement steps:
• Dismantle the bearing races from the steering arm with a long rod 1 and a hammer,
as shown in the figure.
• Dismantle the bearing race fitted on the
lower support with a chisel 2 and a hammer, as shown in the illustration.
• Install the new dust cover seal and the
new races.
3. Inspect:
• The handlebars
Deformations / Cracks / Damage
Replace
s WARNING
Do not attempt to straighten the handlebars
if these are deformed as this could considerably weaken them
ASSEMBLY
Apply the procedure for “DISMANTLING”
inversely.
Take into account the following points.
1. Apply :
• Lithium soap grease
to the bearing races
7-34
STEERING HEAD AND HANDLEBARS
CHAS
2. Install:
• The bearings
Install the balls on the race and apply
more grease
Nº and dimensions of the balls:
19 units above / 1/4 inch
19 units below 1/4 inch
3. Install:
• The steering axle
s WARNING
Immobilise the steering axle until this is
fixed.
4. Tighten:
• The ring nut
Tightening steps:
• Tighten the annular nut using the wrench
for annular nuts
Wrench for annular nuts:
90890 - 01403
NOTE:
Couple the torque wrench to the wrench
for annular nuts so that these form a right
angle.
Ring nut (initial tightening):
3.8 kg • m
• Turn the steering 2 or 3 times
• Loosen the nut half a turn
• Tighten the annular nut again with the special wrench
s WARNING
Do not tighten excessively
Wrench for annular nuts:
0.7 kg • m
7-35
STEERING HEAD AND HANDLEBARS
CHAS
5. Install:
• The upper crown
Screw (steering axle ):
5.4 kg • m
NOTE:
Provisionally tighten nut 2 of the steering axle.
6. Install:
• The headlight support
• The clamp of the brake line Screw (headlight support):
1.0 kg. • m
7. Install:
• The fork
See the section on “FITTING THE FORK”
Clamp screw (steering axle):
3.0 kg • m
Clamp screw (upper shank of the
handlebar):
2.0 kg • m
8. Install:
• The handlebars
Clamp screw (handlebar) 2.0 kg • m
Screws (handlebar) :
0.9 kg • m
9. Install:
• The support of the clutch lever • The twist grip (left-hand)
• The twist grip counterweight (left-hand)
• The control unit 4 of the left-hand twist
grip
7-36
STEERING HEAD AND HANDLEBARS
CHAS
Stages in replacing the left-hand handlebar:
• Couple the lever support to the handlebar, as shown in the illustration.
• Align the mark of the handlebar with the
support of the clutch lever.
Screw (handlebar support):
0.9 kg • m
• Apply a light layer of some special adhesive for rubber to the end of the handlebar,
as shown in the illustration.
• Insert the twist grip into the end of the
handlebar as far as it will go.
NOTE:
Clean off the excess adhesive with a clean
cloth.
s WARNING
Do not touch the handlebar until the
adhesive has dried enough to ensure the
twist grip is firmly adhered.
• Install the counterweight of the handlebar
twist grip (left-hand)
Counterweight of the handlebar
twist grip:
20 Nm (2.0 kg • m)
• Install the switches of the left-hand handlebar
10. Install:
• The twist grip (right-hand)
• The throttle cable
• The switches of the right-hand handlebar
NOTE:
Before installing the twist grip (right-hand),
apply a light layer of lithium soap grease to the
end of the handlebar.
7-37
STEERING HEAD AND HANDLEBARS
CHAS
s WARNING
Leave a space of 1 mm between the twist
grip and the counterweight . Otherwise
the twist grip could stick.
1 mm
11. Install:
• The counterweight of the twist grip
(right-hand) Counterweight of the twist grip:
2.0 kg • m
12. Install:
• The front brake pump
Screw (brake pump support):
0.8 kg • m
13. Install:
• The front mudguard
Screw: (Front mudguard):
0.8 kg • m
14. Install:
• The front wheel
See the section on “FRONT WHEEL FITTING”
Wheel axle:
6.5 kg • m
Screw (brake caliper):
3.5 kg • m
15. Install:
• The clutch cable
NOTE:
Apply a light layer of lithium soap grease to the
end of the clutch cable.
16. Install:
• The front of the fairing
17. Connect:
• The headlight connectors
18. Install:
• The rear view mirrors
7-38
STEERING HEAD AND HANDLEBARS
CHAS
19. Adjust:
• The free play of the clutch cable
See the section on “ADJUSTING THE
CLUTCH” in CHAPTER 3
Free play:
10 ~ 15 mm
20. Install:
• The fairing
See the section on “FAIRING - FITTING”.
7-39
REAR SHOCK ABSORBER AND SWINGARM
CHAS
REAR SHOCK ABSORBER AND SWINGARM
Swingarm
Roller bearing
Thrust cover
Hub
Swinging arm axle
Self-locking nut
Cover
Chain protector
Bush
Flat washer
Bolt with washer
Full shock absorber
Bolt
Bush
Flat washer
Self-locking nut
10
11
12
13
14
15
16
17 Screw
18 Washer
19 Self-locking nut
4.0 m • kg
A: SWINGARM / LIMIT OF FREE
PLAY:
6.0 m • kg
B: LATERAL PLAY:
1.0 mm (0.04 inch)
6.0 m • kg
7-40
REAR SHOCK ABSORBER AND SWINGARM
CHAS
OBSERVATIONS ON HANDLING
s WARNING
This shock absorber contains gaseous
nitrogen at high pressure. Before handling
it, read and understand the following information. The manufacturer will not accept
any liability for damage to property or personal injuries stemming from improper
handling.
• Do not tamper with or attempt to open the
cylinder assembly.
• Do not let the shock absorber get in contact with flames or other sources of intense heat.
This could cause an explosion through
excessive pressure.
• Do not deform the cylinder or allow this to
deteriorate in any way. Any damage to the
cylinder will reduce the efficiency of damping.
• Take care not to scratch the contact surface of the piston with the cylinder as
there could be oil leaks.
• If you wish to get rid of the shock absorber see the section on “OBSERVATIONS
ON ELIMINATION”
OBSERVATIONS ON ELIMINATION
Elimination steps:
Before throwing the shock away the gas
under pressure should be released. Do this
by making 1 a 2 ~ 3 mm hole in the wall of
the cylinder at a point located 15 ~ 20 mm
from the end of the gas chamber.
s
WARNING
Use protective glasses to prevent eye
injuries caused by the escaping gas
and/or shreds of metal.
7-41
REAR SHOCK ABSORBER AND SWINGARM
CHAS
DISMANTLING
Rear swingarm
s WARNING
Stand the motorcycle up firmly so that it
does not fall over.
1. Dismantle:
• The seat
• The side covers or cowlings (left and
right-hand)
See the section on “SIDE COVERS DISMANTLING” in CHAPTER 3.
2. Lift up the rear wheel, installing an appropriate support under the engine.
3. Dismantle:
• The rear wheel
See section on “REAR WHEEL - DISMANTLING”
4. Dismantle:
• The footrest support (left and right-hand
)
• The chain guard
5. Remove:
• The screw (rear-lower shock absorber
)
6. Remove:
• The screw (rear- upper shock absorber
)
7-42
REAR SHOCK ABSORBER AND SWINGARM
CHAS
Swingarm
s WARNING
Stand the motorcycle up firmly so that it
does not fall over.
1. Lift up the rear wheel, installing an appropriate support under the engine.
2. Dismantle:
• The rear shock absorber
3. Dismantle:
• The rear wheel
See the section on “REAR WHEEL - DISMANTLING”
4. Check:
• The swingarm (lateral play) Move the swinging arm from one side to
another.
Out of specification Change the
bearings
Lateral play (at the end of the
swinging arm):
1.0 mm
5. Check:
• The swingarm (vertical oscillation) .
Move the swingarm up and down.
Difficult to move / sticking / scraping replace the bearings
6. Dismantle:
• The covers of the swingarm axle
• The swingarm axle
7. Dismantle:
• The swingarm
7-43
REAR SHOCK ABSORBER AND SWINGARM
CHAS
INSPECTION
1. Inspect:
• The shock absorber
Oil leaks / damage replace
2. Inspect:
• The swingarm
Deformations / Cracks / damage
replace
3. Inspect:
• The oil seals
Damage Replace
• The thrust covers
Damage Replace
• The bushes
Scratches / Damage Replace
• The bushes
Pitting / Damage Replace
INSTALLING
Swingarm
Apply the same procedure as for “DISMANTLING” but inversely.
Take into account the following points:
1. Apply:
• Lithium soap grease
to the oil seals, the bushes and the inside of the thrust covers.
2. Install:
• The swingarm
Swingarm axle:
7.4 kg • m
7-44
REAR SHOCK ABSORBER AND SWINGARM
CHAS
Rear shock absorber
Apply the same procedure as in “DISMANTLING” but inversely.
Take into account the following points:
1. Apply:
• Lithium soap grease
to the oil seals and bush
2. Install:
• The rear shock absorber
Rear shock absorber - upper:
6.0 kg • m
Rear shock absorber- lower:
6.0 kg • m
3. Install:
• The rear wheel
See the section on “REAR WHEEL - FITTING”
Nut (wheel axle):
9.0 kg • m
4. Adjust:
• The tension of the drive chain. See the
section on “TIGHTENING THE TRANSMISSION CHAIN” in CHAPTER 3.
Tension of drive chain
20 ~ 25 mm
7-45
REAR WHEEL SPROCKET AND DRIVE CHAIN
CHAS
REAR WHEEL SPROCKET AND DRIVE CHAIN
Rear sprocket
Holder
10 Drive chain
11 Chain coupling
E: USE A NEW ONE
E: USE A NEW ONE
7-46
REAR WHEEL SPROCKET AND DRIVE CHAIN
CHAS
NOTE:
Before dismantling the sprocket, the chain and
the rear wheel sprocket, the chain sloack
should be checked.
DISMANTLING
1. Dismantle:
• The cover of the output sprocket 2. Dismantle
• The circlip • The sprocket 3. Dismantle:
• The retaining clip • The coupling plate 4. Dismantle:
• The drive chain 5. Dismantle:
• The rear wheel
See the section on “REAR WHEEL - DISMANTLING”
7-47
REAR WHEEL SPROCKET AND DRIVE CHAIN
CHAS
INSPECTION
1. Check:
• The chain stretching
Pull the chain to separate this from the
crown wheel.
Distance between chain/crown wheel
greater than half the tooth replace
the chain.
2. Clean:
• The drive chain
Submerge this in solvent and use a
brush to clean off as much dirt as possible. Then take the chain out of the solvent and dry it.
3. Inspect:
• The clip (Drive chain)
Damage Replace the drive chain
• The rollers • The side plates Damage / Wear Replace the drive
chain
4. Check:
• Chain sticking
Clean and grease the chain and hold this
as shown in the illustration.
Sticking Replace the chain
5. Inspect:
• The sprocket and rear wheel sprocket
Wear / damage replace
7-48
1/4 tooth
Correct
Roller
Rear wheel sprocket
REAR WHEEL SPROCKET AND DRIVE CHAIN
CHAS
Replacing steps:
• Straighten the tab of the locknut and take
off the crown wheel • Install the new rear wheel sprocket and
the locknut Nut (rear crown wheel sprocket):
6.3 kg • m
ASSEMBLY
Apply the procedure for “DISMANTLING”
inversely.
Bear in mind the following points:
1. Install:
• The sprocket • The circlip 2. Install:
• The sprocket cover Screw (sprocket cover):
0.5 kg • m
Screw ( sender )
1.0 kg • m
3. Install:
• The rear wheel
See the section on “REAR WHEEL - FITTING”
Nut (wheel axle):
9.0 kg • m
7-49
REAR WHEEL SPROCKET AND DRIVE CHAIN
CHAS
4. Install:
• The drive chain
• The coupling link of the chain
• The chain clip Rotation direction
s WARNING
Make sure that the clip is installed in the
right position. Otherwise the transmission
chain would open.
5. Adjust:
• The chain slack
See the section on “TIGHTENING The
TRANSMISSION CHAIN” in CHAPTER
3.
Drive chain slack:
20 ~ 25 mm
7-50
ELEC
8
ELEC
CHAPTER 8
ELECTRICAL SYSTEM
ELECTRICAL DIAGRAM ………………………………………………………8-2
ELECTRICAL COMPONENTS …………………………………………………8-4
IGNITION AND STARTING SYSTEM …………………………………………8-6
ELECTRIC STARTING SYSTEM ………………………………………………8-8
TROUBLESHOOTING …………………………………………………………8-9
CHARGING SYSTEM …………………………………………………………8-12
TROUBLESHOOTING ………………………………………………………8-14
LIGHTING SYSTEM ……………………………………………………………8-18
LOCATING BREAKDOWNS …………………………………………………8-20
CHECKING AND TESTING THE LIGHTING SYSTEM …………………8-23
SIGNALING SYSTEM …………………………………………………………8-28
TROUBLESHOOTING ………………………………………………………8-30
CHECKING AND TESTING THE SIGNALING SYSTEM …………………8-32
COOLING SYSTEM ……………………………………………………………8-46
TROUBLESHOOTING ………………………………………………………8-48
ELECTRICAL DIAGRAM
ELECTRICAL DIAGRAM
8-2
ELEC
ELECTRICAL DIAGRAM
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Magnetic flywheel
Regulator / Rectifier
Starting relay
Fuse
Main switch
CDI
Diode x 2
Spark plug
Handlebar switch (rh)
Handlebar switch (lh)
Front headlight / flasher (lh)
Front headlight (flasher rh)
Neutral switch
Rear indicator (lh)
Rear indicator (rh)
B
R
O
L
P
Y
G
W
Ch
Dg
Black
Red
Orange
Blue
Pink
Yellow
Green
White
Chocolate
Dark green
B/Br
Sb
Br
L/B
L/W
L/Y
B/Y
B/W
B/R
B/L
Black/(brown
Sky blue
Brown
Blue/Black
Blue/White
Blue/Yellow
Black/Yellow
Black/White
Black/Red
Black/Blue
8-3
ELEC
Front brake switch
Rear brake switch
Tail light
Instrument panel
Neutral relay
Battery
Horn
Flasher relay
Clutch switch
Side stand switch
Thermocontact
Oil level switch
Coil
Starter motor
Speedometer sensor
W/R
W/B
W/G
Y/L
Y/R
G/R
G/Y
Br/W
L/R
Y/B
White/Red
White/Black
White/Green
Yellow/Blue
Yellow/Red
Green/Red
Green/Yellow
Brown/White
Blue/Red
Yellow/Black
ELECTRICAL COMPONENTS
ELEC
ELECTRICAL COMPONENTS (1)
CDI
Spark plug pipe
Neutral switch
O ring
Thermostat switch
Starter motor
12 Battery
15 Regulator/Rectifier
17 Main switch
20 Rear brake light switch
STARTER COIL
PRIMARY COIL RESISTANCE:
0.23 W + 20ºC
SECONDARY COIL
RESISTANCE:
7.9 K W
8-4
ELECTRICAL COMPONENTS
ELEC
ELECTRICAL COMPONENTS (1)
21 Electrical installation
23 Fuse
24 Diode
27 Oil level switch
29
31
32
33
Side stand switch
Relay
Indicator flasher relay
Horn
8-5
BATTERY:
CAPACITY:
12 V 3AH
NO MAINTENANCE
IGNITION AND STARTING SYSTEM
CIRCUIT DIAGRAM
The following circuit diagram shows the ignition and starting system
8-6
ELEC
IGNITION AND STARTING SYSTEM
ELEC
NOTE:
For the colour codes, please see the electrical diagram
C.D.I. magneto
Starter relay
Main switch
C.D.I.
Spark plug
Handlebar switch (RH)
21 Battery
28 Coil
29 Starter motor
21
28
29
8-7
ELECTRIC START SYSTEM
ELECTRIC START SYSTEM
CIRCUIT DIAGRAM
13
20
21
24
25
29
Starter relay
Fuse
Main switch
Diodes
Engine/starter stop switch
Neutral switch
Neutral relay
Battery
Clutch switch
Side stand switch
Starter motor
8-8
ELEC
ELECTRIC START SYSTEM
TROUBLESHOOTING
ELEC
4. Neutral relay
THE STARTER MOTOR DOES NOT WORK
• Remove the relay
NOTE:
• Use the following tools in this fault location
Pocket tester:
90890 -03112
• Use the battery to supply terminals Br
and Sb.
• Then check the continuity between GB
and BW
1. Fuse (main)
• Check the condition of the fuse.
See “INSPECTING THE FUSE” in
CHAPTER 3.
OK
NOT OK
NOT
OK
OK
Change the fuse
Change the neutral relay
2. Battery
• Check the condition of the battery.
See “INSPECTING THE BATTERY” in
CHAPTER 3.
OK
5. Starter relay
NOT
OK
• Remove the relay
Charge or change the
battery
3. Starter motor
• Use the battery to supply terminals Br
and WG.
• Check the continuity between R and R
OK
• Connect a bridge • Check the operation of the starter motor
OK
NOT
OK
Change the starter relay
NOT
OK
Repair or change the
starter motor
8-9
ELECTRIC START SYSTEM
6. Main switch
ELEC
8. Neutral switch
• Place in the ON position
• Separate the connections
• Check the continuity between R and Br
NOT
OK
OK
• Check the continuity:
• Light blue ground
Repair the main switch
NOT
OK
OK
Change the neutral switch
9. Side stand switch
7. Engine kill switch
• Place in RUN position (not pressed)
• Separate the blue connection
• Fold up the side stand
• Separate connections
• Check the continuity between BW and B.
• Check the continuity between B and B
OK
OK
NOT
OK
NOT
OK
Repair the side stand switch
Repair the handlebar switch
(Right)
8-10
ELECTRIC START SYSTEM
10. Clutch switch
• Separate the yellow connection
• Press the clutch
• Check the continuity between BG and LY
NOT
OK
OK
Repair the side stand switch
11. Starter switch
• Separate the connection
• Press the switch
• Check the continuity between WG and BG
NOT
OK
OK
Change the handlebar
switch (right hand)
12. Connections of the system
• Check all the connections of the starting
system.
See “CIRCUIT DIAGRAM”
NOT
OK
OK
Correct
8-11
ELEC
CHARGING SYSTEM
CHARGING SYSTEM
CIRCUIT DIAGRAM
8-12
ELEC
CHARGING SYSTEM
ELEC
NOTE:
For the colour codes please see the electrical diagram
C.D.I. magneto
Regulator / Rectifier
Fuse
CDI
Spark plug
21 Battery
28 Coil
28
8-13
21
CHARGING SYSTEM
ELEC
TROUBLESHOOTING
THE BATTERY IS FLAT
Procedure (1)
Check:
1. The fuse
2. The battery
3. The charging voltage
4. The resistance of the stator coil
5. The cable connections (charge system)
NOTE:
• Dismantle the following components, before locating the fault.
1) The seat
2) The fuel tank
• To solve these problems use the following special tools:
Pocket tester:
90890-03112
Tachometer for engine:
90890 - 03113
1. Fuse
• Remove the fuse
• Connect the pocket tester (Ω x 1) to the fuse.
• Check if the continuity is correct in the fuse
CONTINUITY OK
NO CONTINUITY
Replace the fuse
2. Battery
Check the condition of the battery.
See the section on “INSPECTING THE BATTERY” in
CHAPTER 3.
CORRECT
INCORRECT
• Clean the terminals
• Recharge or replace the battery
8-14
CHARGING SYSTEM
ELEC
3. Charging voltage
• Connect the engine tachometer to the spark plug
cable
• Connect the pocket tester (DC, 20V) to the battery
(+) probe of tester (+) terminal of the battery
(-) probe of tester (-) terminal of the battery
MATCHES SPECIFICATION
Replace the battery
• Start the engine up and rev. up to about 3.000 r/min.
• Check the charge voltage
• Charge voltage:
14.0 V at 5000 rpm
DOES NOT MATCH
SPECIFICATIONS
4. Resistance of the stator coil.
• Disconnect the stator coil coupler from the connector.
• Connect the pocket tester (Ω x 1 ) to the stator coil.
Stator coil:
(+) probe of tester Yellow-black terminal
(-) probe of tester White terminal
8-15
CHARGING SYSTEM
ELEC
• Check to see if the stator coil has the specified resistance.
DOES NOT MATCH SPECIFICATION
Resistance of the stator coil:
0.4 ~ 0.6 Ω at 20º C
Replace the stator coil
MATCHES
SPECIFICATION
5. Cable connections
• Check the connections of the charging system
See the section on “CABLE DIAGRAM”
CORRECT
BAD CONNECTIONS
Correct these.
Change the rectifier / regulator
8-16
LIGHTING SYSTEM
LIGHTING SYSTEM
CIRCUIT DIAGRAM
8-18
ELEC
ELEC
LIGHTING SYSTEM
NOTE:
For colour codes please see the electrical diagram
Fuse
Main switch
11 Front headlight / indicator (LH)
12 Front headlight / indicator (RH)
14 Rear indicator (LH)
15 Rear indicator (RH)
16 Front brake switch
17 Rear brake switch
18 Tail light
19 Instrument panel
16
18
11
12
15
14
17
8-19
LIGHTING SYSTEM
ELEC
TROUBLESHOOTING
THE HEADLIGHTS, THE SIDE LIGHTS OR THE INSTRUMENT PANEL DO NOT LIGHT UP
Procedure
Check:
1.The fuse
2.The light switch “LIGHTS”
3.The cable connections (lighting system)
NOTE:
• Dismantle the following components before locating the fault.
1)The seat
2)The fuel tank
3)The front bulb holders
• Use the following special tool for solving this fault.
Pocket tester:
90890 - 03112
1. Fuse
• Remove the fuse
• Connect the pocket tester (Ω x 1 ) to the fuse.
• Check to see if the continuity is correct in the fuse
CONTINUITY OK
2. Light switch “LIGHTS”
• Disconnect the coupling of the light switch “LIGHTS”
from the connector (yellow).
• Check (low beam headlights):
• Place the switch in LOW position (k)
• Check the continuity between L’ and G.
• Check (high beam headlights):
• Place the switch in HIGH position (j)
• Check the continuity between L’ and Y.
• Check (headlight flash):
• Hold the headlight flash switch down
• Check the continuity between L and G.
8-20
NO CONTINUITY
Replace the fuse.
LIGHTING SYSTEM
ELEC
(+) probe of tester Red / yellow terminal (-) probe of tester Blue terminal • Place the lights switch “LIGHTS” in positions “POS”
and “OFF”, successively.
• Check to see if the continuity is correct in the lights
switch.
Position of
the switch
In good
condition
Activated
X
X
Deactivated
X
X
: Continuity
In bad
condition
X: no continuity
• Check (main beam):
(+) probe of tester Red / yellow terminal (-) probe of tester Blue terminal (+) probe of tester Red / yellow terminal (-) probe of tester Blue/black terminal • Place the lights switch “LIGHTS” in positions “ON”
and “OFF”, successively.
• Check to see if the continuity is correct in the lights
switch.
Position of
the switch
In good
condition
Activated
X
X
Deactivated
X
X
: Continuity
In bad
condition
IN BAD CONDITION
X: no continuity
IN GOOD CONDITION
*
Replace the light switch “LIGHTS”
8-21
LIGHTING SYSTEM
ELEC
3. Cable connections
• Check the cable connections of the whole light
system
See the section on “WIRING DIAGRAM”
CONNECTIONS IN BAD
CONDITION
Correct these.
CORRECT
See the section on “CHECKING AND TESTING THE
LIGHT SYSTEM”
8-22
LIGHTING SYSTEM
ELEC
CHECKING AND TESTING THE LIGHT SYSTEM
1. Headlight do not come on
1. Headlight bulb
• Check the continuity between B and Y and between
B and G
THERE IS NO CONTINUITY
Replace the headlight bulb.
2. The headlights do not come on
1. Check the bulbs (see previous point).
2. Voltage
• Place the main switch in the ON position
• Place the light change switch in the LOW (LO ) beam
position
• Connect the pocket tester (DC; 20V) to the headlight
coupler
(+) probe of tester
(-) probe of tester
Green terminal Black terminal MATCHES SPECIFICATIONS
The light system is in good
condition.
8-23
LIGHTING SYSTEM
ELEC
• Check the headlight voltage
Headlight voltage:
12.0 V
DOES NOT MATCH
THE SPECIFICATION
3. Headlight change switch “LIGHTS”
• Disconnect the connectors of the handlebar switches
and the connector cables
• Connect the pocket tester (Ω x 1 ) to the headlight
change switch (“LIGHTS”)
With the headlight change switch “LIGHTS” in position
“HI” :
(+) probe of tester Blue terminal
(-) probe of tester Yellow terminal
With the headlight change switch “LIGHTS” in position
“LO” :
(+) probe of tester Blue terminal
(-) probe of tester Green terminal
• Place the headlight change switch “LIGHTS” in positions “HI” high beam “LO” low beam, successively.
• Check to see if the continuity is correct in the switch
Switch
position
In good
condition
“HI” high beam
X
X
“LO” low beam
X
X
: Continuity
In bad
condition
X: There is no continuity
IN BAD CONDITION
Replace the handlebar switch
8-24
LIGHTING SYSTEM
ELEC
4. Cable connections
• Check the wiring connections of the whole lighting
system.
See the “ELECTRICAL DIAGRAM” section
3. The tail light does not come on
1. Brake light tail light bulb
• Remove the bulb of the brake light tail light
• Connect the pocket tester (Ω x 1) to the bulb of the
brake light tail light
(+) probe of tester Terminal (-) probe of tester Terminal (+) probe of tester Terminal (-) probe of tester Terminal NO CONTINUITY
• Check if the continuity is correct in the bulb of the
brake light tail light
CONTINUITY OK
2. Voltage
• Disconnect the connector of the tail light
• Start the engine
• Connect the pocket tester (20 VDC) to the tail light
connector
(+) probe of tester Blue terminal (-) probe of tester Black terminal 8-25
Replace the bulb of the brake
light tail light.
LIGHTING SYSTEM
ELEC
DOES NOT MATCH THE
SPECIFICATION
• Check the voltage of the tail light
3. Cable connections
Check the connections of the
whole light system. See the section on “ELECTRICAL DIAGRAM”
Voltage of the tail light:
12.0 V
MATCHES THE
SPECIFICATION
Replace / service the tail light.
4. The instrument lights do not come on
1. Instrument light bulb
• Remove each bulb from the instrument panel
• Connect the pocket tester (Ω x 1 ) to the bulb.
(+) probe of tester Terminal (-) probe of tester Terminal NO CONTINUITY
• See if the continuity is correct in the bulb of the instrument panel
CONTINUITY OK
*
8-26
Replace the bulb of the instrument
light.
LIGHTING SYSTEM
ELEC
2. Voltage
• Disconnect the coupler of the instrument panel
• Place the main switch in the ON position.
• Connect the pocket tester (DC 20V) to the instrument
light coupler.
• Check the voltage between Br and B
Voltage of the instrument panel:
12.0 V
DOES NOT MATCH SPECIFICATION
MATCHES
SPECIFICATION
3. Cable connections
• Check the connections of the
whole light system.
See the “ELECTRICAL DIAGRAM” section
Replace the instrument panel.
8-27
SIGNALING SYSTEM
SIGNALING SYSTEM
CIRCUIT DIAGRAM
8-28
ELEC
SIGNALING SYSTEM
ELEC
NOTE:
For the colour codes please see the electrical diagram
17
18
19
20
21
22
23
26
27
Fuse
Switch
10 Handlebar switch
11 Front headlight/indicator (LH)
12 Front headlight/indicator (RH
13 Neutral switch
14 Rear indicator (LH)
15 Rear indicator (RH)
16 Front brake switch
22
23
20
19
26
Rear brake switch
Tail light / Brake light
Instrument panel
Neutral relay
Battery
Horn
Indicator relay
Thermocontact
Oil level switch
27
21
13
8-29
SIGNALING SYSTEM
ELEC
TROUBLESHOOTING
THE INDICATORS, THE BRAKE LIGHT, THE “NEUTRAL” INDICATOR PILOT LIGHT, “TURN”
INDICATOR PILOT LIGHT AND THE OIL PRESSURE INDICATOR “OIL” DO NOT COME ON
AND THE HORN DOES NOT WORK
Procedure
Check:
1.The fuse
2.The battery
3.Main switch
4.Wiring connections (signalling system)
NOTE:
• Remove the following items before locating the fault.
1 The seat
3
The front fairing
2 The tank
• To repair these faults use the following special tool:
Pocket tester:
90890 - 03112
1. Fuse
• Remove the fuse
• Connect the pocket tester (W x 1) to the fuse.
• Check whether the continuity is correct in the fuse
CONTINUITY OK
NO CONTINUITY
Replace the fuse.
2. Battery
• Check the condition of the battery
See the section on “INSPECTING THE BATTERY” in
CHAPTER 3.
CORRECT
INCORRECT
• Fill the battery up with liquid
• Clean the terminals
• Recharge or replace the battery
*
8-30
SIGNALING SYSTEM
ELEC
3. Main switch
• Disconnect the connector of the main switch
• Connect the pocket tester (Ω x 1) to the main switch
• Place the main switch in positions “ON” and “OFF”
successively.
• Check if the continuity is correct between the red and
brown cables only in the “ON” position.
IN GOOD CONDITION
IN BAD CONDITION
Replace the main switch.
4. Cable connections
• Check the connections of the full signalling system
See the section on “WIRING DIAGRAM”
CORRECT
CONNECTIONS INCORRECT
Correct these.
See the section on “CHECKING AND TESTING THE
SIGNALLING SYSTEM”
8-31
SIGNALING SYSTEM
ELEC
CHECKING AND TESTING THE SIGNALING SYSTEM
1. The indicators do not flash
1. Indicator bulb
• Remove the indicator bulb
• Connect the pocket tester (Ω x 1) to the bulb
(+) probe of tester Terminal (-) probe of tester Terminal NO CONTINUITY
• Check whether the continuity is correct in the headlight bulb
Replace the indicator bulb.
CONTINUITY OK
2. Bulb holder bush of the indicator
• Place the bulb in the holder
• Disconnect the indicator wires (chocolate and black)
or (dark green and black).
• Connect the pocket tester (Ω x 1) to the indicator
cables
To check the right indicator:
(+) probe of tester Dark green cable (-) probe of tester Black cable To check the left-hand indicator:
(+) probe of tester Chocolate cable (-) probe of tester Black cable NO CONTINUITY
Check/replace the indicator.
8-32
SIGNALING SYSTEM
ELEC
• Check if the continuity is correct in the bulb holder
bush of the indicator.
CONTINUITY OK
3. Turning switch “TURN”
• Disconnect the large coupler (yellow) from the lefthand switch on the handlebars
• Connect the pocket tester (Ω x 1) to the turning
switch “TURN”
With the “turn” switch in position “©”:
(+) probe of tester Brown/white terminal
(-) probe of tester Dark green terminal
With the “turn” switch in position “¬”:
(+) probe of tester Brown/white terminal
(-) probe of tester Chocolate terminal
• Place the TURN switch in positions “d” and “c” successively
• Check if the continuity is correct in the “TURN”
switch.
Switch
position
In good
condition
“d” (right)
X
X
“c” (left)
X
X
: Continuity
In bad
condition
X : There is no continuity
IN GOOD CONDITION
*
8-33
IN BAD CONDITION
Replace the handlebar switch.
SIGNALING SYSTEM
ELEC
4. Voltage
• Place the main switch in the “ON” position
• Connect the pocket tester (DC, 20 V) to the coupler
of the indicator relay.
(+) probe of tester brown terminal (-) probe of tester to ground
DOES NOT MATCH THE
SPECIFICATION
5. Cable connections
• Check the voltage of the indicator relay
Check the connections of the
whole light system.
See the “ELECTRICAL DIAGRAM”
section
Voltage of the indicator relay:
12.0 V
MATCHES THE
SPECIFICATION
Replace the indicator relay
2. The brake light does not come on when the front
or rear brake is activated.
1. Tail light/brake light bulb
• Remove the bulb of the tail light / brake light.
• Connect the pocket tester (Ω x 1) to the bulb
(+) probe of tester Terminal (-) probe of tester Terminal (+) probe of tester Terminal (-) probe of tester Terminal 8-34
SIGNALING SYSTEM
ELEC
NO CONTINUITY
• Remove the bulb of the tail light/ brake light
• Connect the pocket tester (Ω x 1) to the bulb
Replace the tail light / brake light
bulb
CONTINUITY OK
2. Front brake switch
• Disconnect the coupler of the front switch (brown and
green/yellow) of the connector.
• Connect the pocket tester (W x 1 ) to the cables of
the brake switch
(+) probe of tester Brown terminal (-) probe of tester Green/yellow terminal • Check whether the continuity is correct in the brake
switch
Switch
position
In good
condition
Applying front brake
X
X
Not applying front b.
X
X
: Continuity
In bad
condition
IN BAD CONDITION
X : There is no continuity
IN GOOD CONDITION
*
8-35
Replace the front brake switch.
SIGNALING SYSTEM
ELEC
3. Voltage
• Place the main switch in the ON position.
• Apply the front brake
• Connect the pocket tester (DC, 20V) to the front
brake switch.
(+) probe of tester Brown terminal (-) probe of tester To ground
DOES NOT MATCH SPECIFICATION
4. Cable connections
Check the connections of the
whole system. See the “ELECTRICAL DIAGRAM” section
• check the front brake voltage.
Sidelight voltage:
12.0v
MATCHES
SPECIFICATION
5. Rear brake switch
• Disconnect the cables of the rear brake switch
(brown and green/yellow) of the connector.
• Connect the pocket tester (Ω x 1 ) to the cable of the
brake switch
8-36
SIGNALING SYSTEM
ELEC
• Check whether the continuity is correct in the brake
switch
Switch
position
Applying rear brake
Not applying rear b.
: Continuity
In good
condition
In bad
condition
X
X
X
X
X : There is no continuity
IN BAD CONDITION
Replace the rear brake switch.
IN GOOD CONDITION
6. Voltage
• Apply the rear brake
• Connect the pocket tester (DC, 20V) to the rear brake
switch.
(+) probe of tester Brown terminal (-) probe of tester To ground
DOES NOT MATCH SPECIFICATION
• Check/ replace the rear brake light
7. Cable connections
Check the connections of the
whole system. See the “ELECTRICAL DIAGRAM” section
Rear brake voltage:
12.0v
MATCHES
SPECIFICATION
Replace the bulb holder bush of the tail light/brake light
8-37
SIGNALING SYSTEM
ELEC
3. The NEUTRAL indicator does not come on
1. Neutral switch
• Disconnect the cable of the neutral switch (light blue)
of the connector
• Connect the pocket tester (Ω x 1) to the neutral
switch.
(+) probe of tester Light blue terminal (-) probe of tester To ground
• Put the transmission successively into neutral and
then into gear
• Check whether the continuity is correct in the “NEUTRAL” switch
Switch
position
Neutral
In gear.
: Continuity
In good
condition
In bad
condition
X
X
X
X
X : There is no continuity
IN GOOD CONDITION
*
8-38
IN BAD CONDITION
Replace the neutral switch
SIGNALING SYSTEM
ELEC
2. Voltage
• Disconnect the instrument panel coupler.
• Place the main switch in the “ON” position
• Connect the pocket tester (DC, 20V) to the instrument
panel coupler.
(+) probe of tester Brown terminal (-) probe of tester Black terminal DOES NOT MATCH SPECIFICATION
• Check the voltage of the front brake.
Instrument panel voltage:
12.0 V
3. Cable connections
MATCHES
SPECIFICATION
Change the instrument panel.
8-39
Check the connections of the
whole system.
See the “ELECTRICAL DIAGRAM”
section
SIGNALING SYSTEM
ELEC
4. The turning indicator pilot light “TURN” does not
come on
1. Turning switch “TURN”
• Disconnect the large coupler (yellow) from the lefthand switch on the handlebars.
• Connect the pocket tester (Ω x 1) to the turning
switch “TURN”
With the TURN switch in position “d”:
(+) probe of tester Brown/white terminal
(-) probe of tester Dark green terminal
With the TURN switch in position “¬”:
(+) probe of tester Brown/white terminal
(-) probe of tester Chocolate terminal
• Place the “TURN” switch in positions “d” and “c”
successively.
• Check if the continuity is correct in the TURN switch
Switch
position
“d” (right)
“c” (left)
: Continuity
In good
condition
In bad
condition
X
X
X
X
IN BAD CONDITION
X : No continuity
IN GOOD CONDITION
*
8-40
Replace the handlebar switch.
SIGNALING SYSTEM
ELEC
2. Voltage
• Place the main switch in the “ON” position
• Connect the pocket tester
(+) probe of tester Brown terminal (-) probe of tester Ground
DOES NOT MATCH SPECIFICATION
• Check the voltage of the front brake.
3. Cable connections
Indicator voltage:
12.0 V
MATCHES
SPECIFICATION
Check the connections of the
whole system.
See the “ELECTRICAL DIAGRAM”
section
4. Indicator relay
• Line up the relay
(+) probe of tester Brown terminal
(-) probe of tester Brown/white terminal
DOES NOT MATCH SPECIFICATION
The indicator can be heard to operate
MATCHES
SPECIFICATION
Change the instrument panel
8-41
Replace the indicator relay.
SIGNALING SYSTEM
ELEC
5. The oil level indicator light does not come on
1. Oil level switch
• Remove the oil level switch from the oil tank
• Disconnect the switch coupler (black, black/red) from
the connector.
• Connect the pocket tester (Ω x 1) to the oil level
switch.
Check 1
(+) probe of tester Black/red terminal
(-) probe of tester Black terminal
• Check if the continuity is correct in the oil level switch
NO CONTINUITY
CONTINUITY OK
Replace the oil level switch.
2. Voltage
• Disconnect the instrument panel coupler.
• Place the main switch in the “ON” position
• Connect the pocket tester (DC, 20V) to the instrument
panel coupler.
(+) probe of tester Brown terminal (-) probe of tester Black terminal DOES NOT MATCH SPECIFICATION
• Check the voltage of the front brake.
3. Cable connections
Instrument panel voltage:
12.0 V
MATCHES
SPECIFICATION
Change the instrument panel.
8-42
Check the connections of the
whole system.
See the “ELECTRICAL DIAGRAM”
section
SIGNALING SYSTEM
ELEC
6. The horn does not sound when the HORN switch
is pressed
1. HORN switch
• Disconnect the handlebar switch connector from the
connector
• Connect the pocket tester (Ω x 1) to the HORN
switch.
(+) probe of tester Pink terminal
(-) probe of tester Black terminal
• Check if the continuity is correct in the HORN switch
Switch
position
Horn switch on
In good
condition
Horn switch not on
X
: Continuity
In bad
condition
X
X
X
X : No continuity
CONTINUITY OK
IN BAD CONDITION
Replace the handlebar switch.
2. Voltage
• Connect the pocket tester (DC, 20V) to the horn connector.
(+) probe of tester Brown terminal (-) probe of tester To ground
DOES NOT MATCH SPECIFICATION
3. Cable connections
• Check the voltage of the horn.
Check the connections of the
whole system.
See the “ELECTRICAL DIAGRAM”
section
Horn voltage:
12.0 V
MATCHES
SPECIFICATION
*
8-43
SIGNALING SYSTEM
ELEC
4. Horn
• Disconnect the pink cable from the horn terminal
• Connect a bridge cable to the horn terminal and
lead this to ground.
THE HORN SOUNDS
THE HORN DOES NOT
SOUND
The horn is in good condition
5. Voltage
• Connect the pocket tester (DC, 20V) to the pink horn
terminal.
(+) probe of tester Pink terminal (-) probe of tester To ground
• Check the voltage of the pink terminal.
DOES NOT MATCH
SPECIFICATION
Horn voltage:
12.0 V
Replace the horn.
MATCHES
SPECIFICATION
Adjust or replace the horn.
8-44
COOLING SYSTEM
COOLING SYSTEM
CIRCUIT DIAGRAM
8-46
ELEC
COOLING SYSTEM
ELEC
NOTE:
For the colour codes please see the electrical diagram
Fuse
Main switch
19 Instrument panel
21 Battery
26 Thermocontact
19
26
8-47
COOLING SYSTEM
ELEC
TROUBLESHOOTING
THE TEMPERATURE LIGHT DOES NOT COME ON WHEN THE ENGINE IS HOT
Procedure
Check:
1.The seat
2.The tank
3.The front fairing
NOTE:
• Remove the following items before locating the fault.
1) The seat
3) The side fairing (right)
2) The side fairing (left)
4) The headlight assembly
• To solve this breakdown, use the following special tool:
Pocket tester:
90890 - 03112
1. Fuse
• Remove the fuse
• Connect the pocket tester (Ω x 1) to the fuse.
• Check to see if the continuity is correct in the fuse
CONTINUITY OK
NO CONTINUITY
Replace the fuse.
2. Battery
• Check the state of the battery.
See the section on “INSPECTING THE BATTERY” in
CHAPTER 3
CORRECT
INCORRECT
• Clean the terminals
* Recharge or replace the battery
*
8-48
ELEC
COOLING SYSTEM
3. Main switch
• Disconnect the coupler from the main switch
• Connect the pocket tester (Ω x 1) to the main switch
(+) probe of tester Red terminal (-) probe of tester Brown terminal • Put the main switch into the “ON” and “OFF” positions alternatively.
• Check to see if there is continuity in the main switch.
Switch
position
ON
OFF
: Continuity
In good
condition
In bad
condition
X
X
X
X
X : No continuity
IN BAD CONDITION
Replace the main switch.
IN GOOD CONDITION
4. Temperature indicator
• Disconnect the thermosensor cable (green/red) from the connector
• Connect the cable to ground (chassis) with a bridge
cable
• Place the main switch in ON position
• Check whether the temperature indicator comes on
INCORRECT
5. Cable connections
• Check the connections of the whole
system. See the “ELECTRICAL DIAGRAM” section
CORRECT
CORRECT
Replace the instrument panel.
8-49
COOLING SYSTEM
s WARNING
6. Thermosensor
• Remove the thermosensor from its housing.
• Connect the pocket tester (Ω x 1) to the thermosensor
• Submerge the thermosensor in water • Measure the resistances.
• Take note of the temperatures while the water is heated up with the thermosensor in 3.
Up to 115ºC
No continuity
ELEC
Handle the thermostat with special
care. Never let this receive any
impacts or fall. If it does accidentally
fall, replace it.
From 115ºC
Continuity
UNDER 115 °C
OVER 115 °C
Replace the thermosensor.
CAUTION
THE RESISTANCES
MATCH
SPECIFICATIONS
After replacing the thermosensor,
check the level of the coolant liquid
in the radiator and see if there are
any leaks.
7. Cable connections
• Check the connections of the whole cooling system
See the “ELECTRICAL DIAGRAM” section
BAD CONNECTIONS
Correct.
8-50
ELECTRICAL DIAGRAM TZR50
COLOUR CODE
B
R
L
G
O
Y
P
Br
Ch
Sb
Dg
W
B/Br
B/Y
Black
Red
Blue
Green
Orange
Yellow
Pink
Brown
Chocolate
Sky blue
Dark green
White
Black/brown
Black/yellow
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
B/R
B/W
G/R
G/Y
Br/W
W/R
W/B
W/G
Y/L
Y/R
L/B
L/R
L/W
L/Y
Black/red
Black/white
Green/red
Green/yellow
Brown/white
White/red
White/black
White/green
Yellow/blue
Yellow/red
Blue/Black
Blue/red
Blue/white
Blue/yellow
Magnetic flywheel
Regulator/ rectifier
Starter relay
Fuse
Main switch
CDI
Diode x 2
Spark plug
Handlebar switch (RH)
Handlebar switch (LH)
Front headlight/Flasher ó turn signal
indicator light (LH)
Front headlight/Flasher ó turn signal
indicator right (RH)
Neutral switch
Rear Flasher (LH)
Rear Flasher (RH)
Front brake switch
Rear brake switch
Tail light
Instrument panel
Neutral relay
Battery
Horn
Flasher relay ó turn signal indicator light
Clutch switch
Side stand switch
Thermocontact
Oil level switch
Coil
Starter motor
Speedometer sensor