CFMoto CF625-C Specifications

CF625-B Service
CF625-C Manual
WWW.CFMOTO.COM
All rights reserved
Zhejiang CFMOTO Power Co., Ltd.
Aug. 2009
FORWARD
CONTENTS
This manual introduces X6 EFI version( CF625B/CF625-C) maintenance information, disassembly
procedure, check & adjustment methods, troubleshooting and technical specifications. There are
illustrations, drawing to guide your operations.
Chapter 1 mainly introduces general operation
information, tools, vehicle structure and basic
specifications.
Chapter 2 mainly introduces check & adjustment
methods and how to do vehicle maintenance.
Chapter 3 mainly introduces disassembly,
installation, adjustment, maintenance and troubleshooting information.
Maintenance Information
1
Vehicle Body, Muffler
2
Checking& Adjustment
3
Cooling & Lubricating System
4
Engine Disassembly & Assembly
5
Engine
Disassembly,
Check&
Assembly
6
Fuel Supply& Air Intake System
7
Front Wheel, Brake, Suspension,
Steering System
8
9
Rear Wheel, Brake, Suspension
CFMOTO reserves right to make improvements and modifications to the products
without prior notice. Overhaul and maintenance should be done according to actual
condition of vehicle.
Zhejiang CFMOTO Power Co., Ltd.
Aug. 2009
System
Front & Rear axle
10
Electric System
11
Lighting, Odometer, Switch
12
Troubleshooting
13
Conversion Table
Item
Example
Pressure 200 kPa(2.00kgf/cm2 )
33kPa (250mmHg)
Torque
18N m(1.8kgf m)
Volume 419ml
Force
12N(1.2kgf)
Conversion
1kgf/cm2=98.0665kPa 1kpa=1000Pa
1mmHg=133.322Pa=0.133322kPs
1kgf m=9.80665N m
1ml=1cm3=1cc
1l=1000cm3
1kgf=9.80665N
1. Maintenance Information
Caution ………………………………1-1
Tightening Torque …………………1-13
Numbers Marking Locations……….1-3
Main Parameters Table……………1-4
Grease & Sealant…………………1-18
Wiring, Pipe & Cables Layout……1-19
Maintenance Parameters Table…...1-6
Failure Indicator…………………….1-23
Cautions
Safety Cautions
1. Hazardous components in exhaust. Do not run the engine in a enclosed or poorly ventilated place for long time.
2. Do not touch the engine or muffler with bare hands after the engine has just stopped to avoid burns. Wear longsleeve work clothes and gloves for operation.
3.Battery acid (dilute sulfuric acid) is highly caustic and may cause burns to skin and eyes. Flush with water if
splashed to skin and get immediate medical attention. Flush with water if splashed to clothes to avoid burns. Keep
battery and liquid away from reach of children
4.Anti-freeze is poisonous. Do not drink or splash to skin, eyes or clothes. Flush with plenty of soap water if splashed
to skin. If splashed into eyes, flush with water and consult the doctor. If drinking the coolant, induce vomit and consult
the doctor. Keep coolant away from reach of children.
5. Wear proper work clothes, cap and boots. If necessary, were dust-glass, gloves and safety glasses.
6. Gasoline is highly flammable. No smoking or fire. Also keep against sparks. Vaporized
gasoline is also explosive. Operate in a well-ventilated place.
7.When charging, Battery may generate hydrogen which is explosive. Charge the battery in a well-ventilated place.
8. Be careful not to get pinched by the turning parts like wheels and clutch.
9. When more than two people are operating, keep reminding each other for safety purpose.
Cautions for Disassembling and Assembling
1. Use genuine CFMOTO parts, lubricants and grease
3. Clean the mud, dust before overhauling
2. Store the disassembled parts separately in order for correct assemble.
4. Replace the disassembled washers, o-rings, piston pin retainer, cotter pin with new ones.
5. Elastic retainers might get distorted after disassembled. Do not use the loosened retainers.
6. Clean and blow off the detergent after disassembling the parts. Apply lubricants on the surface of moving parts.
Measure the data during disassembly for correct assembling.
7.If you do not know the length of screws, install the screws one by one and make sure they are screwed in with same
depth.
8.Check if the disassembled rubber parts are aged and replace if necessary. Keep the
rubber parts away from grease.
9.Pre-tighten the bolts, nuts and screws, then tighten according to the specified torque,
from big to small and from inner side to outer side.
10.Replace aged rubber parts before assembling. Do not mix volatile oil and grease on the surface,due to
aggressivness of fuel and oil.
11.Apply or inject recommended lubricant to the specified parts
12.Use special tools wherever necessary.
13. When ball bearing disassembled by pressing ball ring, it can not be reused.
14.Turn the inner and outer rings of ball bearing to make sure the bearing will turn smoothly.
Replace if any axial or radial play is found.
If the surface is uneven, clean with oil and replace if the cleaning does not help.When pressing the
bearing into the machine or to the shaft.
15.Install the one-side dust-proof bearing in the right direction. When assembling the open type or double-side
dustproof bearing, install with manufacturer’s mark outward.
16.Keep the bearing block still when blowing dry the bearing after washing clean. Apply oil or lubricant before
assembling.
17.Install the elastic circlip properly. Turn the circlip after assembling to make sure it has been seated into the
slot.
18.After assembling, check if all the tightened parts are properly tightened and can move smoothly.
19.Brake fluid and coolant may damage coating, plastic and rubber parts. Flush these parts with water if
splashed.
20.Install oil seal with the side of manufacturer’s mark outward.
Do not fold or scratch the oil seal lip.
Apply grease to the oil seal lip before assembling
21.When installing pipes, insert the pipe till the end of joint. Fit the pipe clip, if any, into the groove. Replace the
pipes or hoses that cannot be tightened.
22.Do not mix mud or dust into engine and/or the hydraulic brake system.
23.Clean the gaskets and washers of the engine casing before assembling. Remove the scratches on the joint
faces by polishing evenly with an oilstone.
24.Do not twist or bend the cables too much. Distorted or damaged cables may cause poor operation.
25.When assembling the parts of protection caps, insert the caps to the grooves, if any.
1. Maintenance Information
Numbers Marking Location
CF625-B/CF625-C
VIN Number: LCELDUS1~/LCELDUS2~
Engine Number:196S-B~
Engine Number Location
VIN Number Location
Main Data Table
Item
Par ameter
CF625- B/CF625- C
CF625-B:2100mm CF625-C: 2300mm
1180m m
1230mm
CF625-B: 1290mm
CF625-C: 1490mm
196S -B
3
CF625- B/CF625- C:594cm
Unle aded gasoli ne RQ- 90or above
Model
Length
Width
Height
Wheel base
Engine type
Displacement
Fuel type
Dry weight
CF625- B: 344 kg
Number of Passengers
Ma x. Load
F ront Ti re
T ir e
Rear T ir e
Mi n. Gr ound Clear ance
T urni ng Di ameter
Star ti ng
E ngine Type
E ngine
Com bustion Cham ber Type
Valve Dr iv ing Type
B ore × Str oke
Com pres sion Ratio
Lubr ic ation Type
O il P ump Type
Lubr ic ant Fi lter Type
O il T ype
Cool ing Type
Cool ant T ype
CF625-C: 358 kg
CF625-B:1 (driver included)
CF625-C:2 (driver included)
210 kg
25×8-12 40J
185/80-12 40J
25×10-12 47J
270/60-12 47J
275m m
CF625-B:4000 mm CF625-C:4750mm
Electrical starting, Manual Starting
Single cylinder, 4-stroke, Liquid-cooled, 4
valves, OHC
Triang le
S OHC /Chain Dri ve
196S -B: 96m m×82.0mm
196S -B:10:1
P res sur e & Splash
Rotor
Full fl ow f ilter
S AE15W -40/SF
Clos ed cool ant cir cul ation
- 35℃ anti- rus t an ti -fr eeze
1. Maintenance Information
Item
Air Filter type
F uel
Dev ice
Valve
Type
Diameter of mixing
valve
W et, Auto-Centr ifugal
P aram eter
Sponge element filter
Type: CF188-B-173000
36mm
Cl utc h
O per ation
Autom atic( CVT ) +P ark ing & G ear S hifting
M ode
G ear s Shi ft
Low Ge ar, Hi gh Gear & Reverse G ear
S hift
Manual /L- H- N-R
M ode/order
( CVT )
T rans mis sio 2.88~ 0.70
n Ratio
Final Rati o
1.333( 24/18, Bev el G ear)
Se condar y
1.952( 41/21)
Ratio
Gear ing
Low G ear : 2.25(36 /1 6) ; Hi gh G ear :
G ear
Gears
Ratio
1.350( 27/20) ; Rever se
G ear :
1.471( 25/17)
Low Gear 5.857 ; High G ear : 3.514 ;
Total
Rever se Gear :3.828
Front
33 / 9 = 3.667
Axle
Axle Ratio
Rear
33 / 9 = 3.667
Axle
E ngine Ou tp ut M ode
Front/Rear Shaft
Di rec tion of O utput
Cloc kwis e on forwar d shift
Rotation
Steer ing
Steer ing
Inner
31º
O uter
31º
Dev ice
A ngle
Front
Hy draul ic Dis c
B rak e Type
Rear
Hy draul ic Dis c
B umper
S uspens ion Swi ng Ar m
Dev ice
F r ame Type
W elded Steel Tube and Plate
Maintenance Parameters Table
Lubrication System
Item
Eng ine Oil
Capacity
Volu me when repla cing
Volu me when replacing
filter
Recomm ende d Oil(See Original)
Standard
Service Limit
190 0mL (2 .01Qts)
220 0mL (2 .32Qts)
-
-
·Specially f or 4-stroke
m otorcycle
SAE -15W -40
Su bstitutes m ust be used
in the following ran ge.
API type: SE or SF grade
SAE type: Ch oose from
the left chart according
to the environ men tal
tem perat ure
Oil Pum p Rotor
Gap betwe en Inne r and
Outer Rot ors
Gap b etween Outer rot or
and bod y
Oil pressure
0.03 ~0.1mm
0.15m m
0.03 ~0.1mm
0.12m m
130 -170KPa(18 .85Psi-24.
66Psi) at 3 000R PM
Air Inlet System
Item
Fu el Tank Ca pacity
Full capa city
Standard
18 L(4.76Ga llons)
Valve
Inlet Pressure Sensor
Inlet Temperature Sensor
Air Bypass Valve
Injector
CF188-B-173000
CF188-B-175000
CF188-B-177000
CF188-B-172000
CF188-B-171000
Idle Speed
14 00±1 00rRPM
1. Maintenance Information
Cooling System
It em
St a n d a r d /P a ra m e te r
Fu l l C a p a cit y
2000m l
R e se r vo i r t a n k c a p a cit y
300ml
St a n d a rd D e n s it y
50%
Op e n in g p r e s su r e o f ra d ia t o r
ca p
In i ti a l
Te m p e r a t u re
T h e rm o st a t
F u ll o p e n i n g
Te m p e r a t u re
Fu l l o p e n in g l if t
r ange
Te m p e r a t u re
and
Re s is ta n ce
of Water
Te m p e r a t u re
Se n s o r
Te m p e r a t u re
of
T h e rm o st a t
C o o la n t
Typ e
S e r vic e
L i m it
0.53Gallons
10.14Ounces
1 0 8 k p a (1 . 1 k g f / cm 2 )
15.6Psi
71±3℃
159.8 F
88℃
190.4 F
3.5~ 4.5mm/95?
End B
E nd A C
R e si sta n ce ( Ω )
R e s is ta n c e (kΩ)
-20
----
13.71-16.94
25
-----
1.825-2.155
50
176-280
----
80
110
63.4-81.4
24.6-30.6
0.303-0.326
0.138-0.145
C l o se - Op e n
8 8 ℃ ( 1 9 0 .4 F )R o u n d
88℃ R ound
190.4F
O p e n - Cl o se
8 2 ℃ ( 1 7 9 .6 F )R o u n d
82℃ R ound
179.6F
Te m p e r a tu re ( ℃ )
-3 5 ℃ a n t i- f r e e ze , a n tis e p sis , h ig h - b o il co o la n t
R e m a rk
Front Wheel
Item
P la y o f w h e e l
r im
Fr o n t W h e e l
T ir e
S t a n d a rd
V e rt i ca l
H o r izo n t a l
G ro o ve
P re s su r e
1 .0 m m
1 .0 m m
-
35k Pa ( 0.35k gf /
2
cm ) / ( 5 . 0 8 P si )
Op e ra t io n
L im it
2.0mm
2.0mm
3.0mm
-
Rear Wheel
Item
P la y o f w h e e l
r im
R ear W heel
T ir e
Sta ndar d
V e rt i ca l
H o r izo n t a
l
G ro o ve
P re s su r e
1 .0 mm
1 .0 mm
-
3 0 kP a ( 0 . 3 0 k g f / cm 2 )
/ (4 . 3 5 P s i)
O p e r a t io n
L im it
2.0mm
2.0mm
3.0mm
-
Brake System
I te m
F r o n t B ra k e
R e a r B r a ke
B r a ke
B r a ke
B r a ke
B r a ke
B r a ke
Standar d
E n d P la y
D i sc T h ick n e ss
E n d P la y
P e d a l P la y
D i sc T h ick n e ss
0mm
3.5mm
5-10 mm
0mm
7.5mm
O p e ra t i o n
L i m it
-
2.5mm
-
-
6.5mm
1. Maintenance Information
Battery, Charging Device, Pickup Coil
Item
AC
M agneto
M otor
Stan dard
M odel
Output
Charging Coi l Resis tance (2 0℃ )
P ick up Coil Res istanc e
Magneto witho ut Loa d Vol tage/(Idle
Speed)
M ax. Output P owe r
Rated Voltage
P eak Voltage of Pic kup Coil
> 100V( AC), 5000r/m in
300W, 5000r/mi n
13.5V-15.0V, 50 00r/mi n
Three-phase
annular
rectification,
Silicon controlled parallel-connected
regulated voltage
Capaci ty
Capacity
B attery
3-phase AC
0.2Ω-0.3Ω
110Ω-140Ω
> 120V
Rec tifier
Terminal
Vol ta ge
Permanentmagnet AC Type
Point
Chargi ng
Current/time
Full y
Charged
Ins uffi cient
Charged
Standard
Quick
12.8V
<11.8V
0.9A/ 5~ 10H
4A/ 1H
Ignition Device
Item
Standard
Ig nition
ECU Ign itio n
Resistance Spark plug
Type
Standard
Spark Pl ug
DPR7EA-9(NGK)
DR8EA ,D7RTC
Opti onal
Spark plug gap
Spark
0.8-0.9mm
>8m m, 1mpa
Characteristic
Igni tion Tim ing
Igni tion
Coil
Res is tanc e
BTDC10ºCA 1500r/mi n
Initial
Sec ondary
Ignition Coil
P eak Voltage
Puls e
Generator
Starter Relay Coi l Resi stanc e
S econdary Starte r Rel ay Coil
Res is tanc e
0.74Ω-0.78Ω
10.1kΩ-11.1 kΩ
> 150V
2V
3Ω-5Ω
90Ω-100Ω
Lights, Instrument, Switches
Fus e
L ight, Bulb
Fus e
Item
M ain
A uxil iary
Head Li ght(H i/ Lo)
B rak e Light/ Tai l Light
Turni ng Light
Das hboard Ind icator Light
Indi cators
M ain
Sta ndard
20 A
10 A×2
15A×2
12V —35W/35W ×2
12V—5W ×2
12V—21W/5W
12V—10W×4
φ5 LED
LCD
Air Inlet Device+ Cylinder Head
(mm)
Item
Valve Diameter
Valve Clearance
Fit Clearance between Valve
Guide and Valve Stem
Internal dia. of Valve Guide
Exterior dia. of Valve Stem
Standard
Operation Limit
Intake
32.6
Exhaust
29
Intake
0.05-0.10
Exhaust
0.17-0.22
Intake
0.010-0.037
Exhaust
0.030-0.057
Intake & Exhaust
5.000-5.012
Intake
4.975-4.990
Exhaust
4.955-4.970
Valve Stem Run-out
Intake & Exhaust
Length of Valve Stem End
Intake & Exhaust
Thickness of Valve Head
Intake & Exhaust
0.5
Valve Head Seal Run-out
Intake & Exhaust
0.03
Width of Valve Seats Seal
Intake & Exhaust
0.9-1.1
Length of Valve Spring
Intake & Exhaust
40
Valve Spring Tension
Intake & Exhaust
Cam Height
Fit Clearance between
Camshaft Exterior dia. &Bore.
Camshaft Exterior dia.
Camshaft Bore Internal dia.
0.05
2.9-3.1
/Length31.5mm
Intake
33.430-33.490
33.130
Exhaust
33.500-33.560
33.200
φ22
0.032-0.066
0.150
φ17.5
0.028-0.059
0.150
φ22
21.959-21.980
φ17.5
17.466-17.484
φ22
22.012-22.025
φ17.5
17.512-17.525
0.10
Rocker Arm Internal dia.
Intake & Exhaust
12.000-12.018
Rocker Arm Shaft Exterior dia.
Intake & Exhaust
11.973-11.984
Adjoining Plant
Plainness of Cylinder Head
Cover Adjoining Plant
38.8
Tension182-210N
Camshaft Run-out
Plainness of Cylinder Head
2.3
0.03
0.05
0.03
0.05
1. Maintenance Information
C ylinde r + Pis ton + Pisto n R ing + Cra nks ha ft
It em
Stan d ard
Cylin d er Pre ssure
10 0 0kPa
F it Clea ra nce b etw e en
(mm )
O pe ratio n
Lim it
1 96 S-B:0 .04 8-0 .0 68
Pisto n a n d C ylin de r
0. 15
1 9 6S-B:9 5 .96 0-9 5 .98 0
P isto n Skirt dia .
Te sting the p oint a wa y skirt en d
9 5. 88 0
4m m
In tern a l dia. o f C ylind e r
19 6 S-B: 9 6.0 18 -9 6. 03 8
Pla inn ess o f Cylin d er
0 .0 15
Ad jo in ing Plan t
Piston Rin g F ree Ga p
Pisto n Ring C lo se d G ap
Piston Ann ula r Fit
Clea ran ce
Th ickn e ss Pisto n Rin g
Piston An nu lar W id th
In tern a l dia. o f Pist on Pin
Top R ing
2
nd
R ing
0. 05
R
11 .7 ro un d
8 .9
R
1 2 rou n d
9 .5
Top R in g
0 .2 0 -0 .3 5
0. 60
R ing
0 .1 5 -0 .3 0
0. 60
Top R in g
0 .0 4 -0 .0 8
0.1 8 0
R ing
0.03-0. 07
0.1 5 0
Top R in g
0.97-0. 99
2
2
2
nd
nd
nd
R ing
1.17-1. 19
Top R in g
1 .0 3 -1 .0 5
2
nd
R ing
1.22-1. 24
Oil Rin g
2 .5 1 -2 .5 3
23 .0 0 2-2 3.0 0 8
23 .030
Exterio r dia . Piston Pin
22 .9 9 5-2 3.0 0 0
22 .980
Ro d Sm all End In ne r d ia.
23 .0 1 5-2 3.0 2 0
23 .040
R o d Big End Ga p
0 .10 -0 .55
1 .0
R od Big End Th ickn ess
2 4 .9 5-2 5.0 0
C ra nksh aft Ru n -o u t
0 .0 3
Bo re
0 .08
R em a rk
Clutch + Transmission
Item
(mm)
Standard
Limit
Clutch Friction plate inner dia.
140.00-140.15
140.50
Clutch Joint Rotation
1800-2400RPM
Clutch engagement
3300-3900RPM
Drive Belt Width
35.2
33.5
Driven Disc Spring Free Length
168
160
0.10-0.40
0.50
Shifter and fit flute gap
Left Shifter Sliding Thickness
5.8-5.9
Right Shifter Sliding Thickness
5.8-5.9
Plunging Flute Width
6.0-6.2
Driven Output Gear Sliding Width
6.0-6.2
Remark
1. Maintenance Information
Tightening Torque
Item
Torque N·m(kgf·m)
5mm Bolt, nut
6mm Bolt, nut
8mm Bolt, nut
10mm Bolt, nut
12mm Bolt, nut
5(0.5)
10(1.0)
22(2.2)
34(3.5)
54(5.5)
Item
Torque N·m(kgf·m)
5mm Screw
4(0.4)
6mm Screw
9(0.9)
6mmSH Bolt with flange,
10(1.0)
6mm Bolt with flange, nut
12(1.2)
8mm Bolt with flange, nut
26(2.7)
10mm Bolt with flange, nut
39(4.0)
For o thers not listed in the chart, refe r to t he standard tight ening t orque.
Notes: Apply some engine oil on the part of screw thre ad and adjo ining surface
Thread Dia.
Quantity
Torque
Item
Remark
(mm)
N·m(kgf·m)
Upper Front Mounting Bolt, Engine
M8×60
1
16~20
Upper Rear Mounting Bolt, Engine
Upper Rear Mounting Bracket Bolt,
Engine
Upper Front Mounting Bracket Bolt,
Engine
M10×1.25×110
1
40~50
M8×14
1
16~20
M8×14
1
16~20
Low Mounting Bolt, Engine
M12×1.25×140
2
50~60
Bolt, Swing Arm
M10×1.25×70
16
40~50
Bolt, Rear Absorber
M10×1.25×50
4
40~50
Bolt, Front Absorber
M10×1.25×50
4
40~50
Bolt, Rear Wheel Shaft Holder
M10×1.25×100
4
40~50
Mounting Nut, Rim
901-07.00.02 M20
16
50~60
Nut, Rim Shaft
Mounting Screw, Rear Brake
Caliper
901-07.00.03 M10
4
110~130
M6×25
2
18~22
M10×1.25×20
2
40~50
901-08.00.03 M8×
8
25~30
Bolt, Front Brake Caliper
M8×14
4
16~20
Locknut, Steering Stem
M8×55
4
16~20
Nut, Steering Stem
M10×1.25
4
40~50
Locknut, Steering Shaft
M14×1.5
1
100~120
Rear Mounting Bolt, Muffler
M8×30
1
16~20
Bolt, Exhaust Pipe
M8×14
1
16~20
Mounting Bolt, Exhaust Pipe
M8×40
1
16~20
Mounting Bolt, Rear Axle
M10×1.25×110
2
40~50
Mounting Bolt, Front Axle
M10×1.25×90
1
40~50
Mounting Bolt, Front Axle
Back End Bolt, Rear Trans Shaft
M10×1.25×25
901-30.00.01
2
6
40~50
40~50
Front End Bolt, Rear Trans Shaft
901-29.00.01
4
35~45
901-29.00.01
CF250T-420500
M8×14
M6×12
M8×14
8
1
2
2
4
35~45
9~12
35~45
25~30
16~20
Bolt, Rear Brake Caliper
Bolt, Front Brake Disc
Bolt, Front Trans Shaft
Thermo Switch
Mounting Bolt 1, Front Rack
Mounting Bolt 2, Front Rack
Mounting Bolt , Rear Rack
Engine Tightening Torque Table
Torque
Item
Q’ty
Screw dia.(mm)
Remark
(N.m)
Sensor, Reverse Gear
1
M10×1.25
20
Spark Plug
1
M12×1.25
18
Water Temperature Sensor
1
Rc1/8
8
Valve Clearance Adjusting Nut
4
M5
10
Drive Disc Nut
1
M20×1.5
115
Driven Disc Nut
1
M20×1.5
115
Circle Nut, Driving Disc
1
M30×1
100
Nut, Front Output Shaft
1
M14×1.5
97
Nut, Drive Bevel Gear
1
M22×1
145
Nut, Driven Bevel Gear
1
M16×1.5
150
Fixing Nut, Clutch
1
M18×1.5
70
Left handed
Limiting Nut, Driven Bevel Gear Shaft
1
M60
110
Apply screw thread sealant
Limiting Nut, Front Output Shaft
1
M55
80
Apply screw thread sealant
Apply
screw
thread
sealant, left handed
Bolt, Swing Arm Shaft
2
M14×1.25
28
Drain Bolt
1
M12×1.5
30
Mounting Bolt, Overriding Clutch
6
M8
26
Apply screw thread sealant
Mounting Bolt, Magneto Stator
3
M6
10
Apply screw thread sealant
Bolt, CVT Windshield
3
M6
10
Apply screw thread sealant
Link Bolt, Oil Pipe
2
M14×1.5
18
Mounting, Oil Pump
3
M6
10
Mounting Bolt, Pressure Limiting Valve
2
M6
10
Bolt, Drive Bevel Gear Cover
4
M8
32
Bolt, Driven Bevel Gear Cover
4
M8
25
Locating Bolt, Shift
1
M14×1.5
18
Flange Bolt, Fan
1
M10×1.25
55
1. Maintenance Information
To
be
continued
Torque
Item
Quantity
Diameter(mm)
Remark
(N.m)
14
M6
10
3
M8
25
Bolt, Driven Sector Gear
1
M6
12
Mounting Bolt, Oil Filter
1
M20×1.5
63
Oil Filter
1
3 / 4 ?( 1 6 / i n
18~20
Bolt, Starting Motor
2
M6
10
Bolt, Cylinder Head
4
M10
46
Bolt, Cylinder Head(2 sides)
2
M6
10
1
M8
25
Upper and Lower Bolt, Cylinder
4
M6
10
Bolt, Cylinder Head Cover
12
M6
10
Bolt, Chain Tensioner
2
M6
10
Nut, Chain Tensioner
1
M8
8
Bolt, Radiator Fan
3
M6
10
Thermostat Bolt
2
M6
10
Bolt, Water Pump Cover
3
M6
6
Mounting Bolt, Water Pump
2
M6
10
Fixed Bolt, Timing Sprocket
2
M6
15
M5
4.5-6
M6
8-12
M8
18-25
Bolt, Crankcase
Bolt without remarks
Apply screw thread sealant
Engine Tools
Measuring Tools
No
Name
Type
Function
1
Vernier Calipers
0-150mm
Measure length and thickness
2
Micrometers
0-25mm
3
Dial gauge
25-50mm
Measure max. lift range of camshaft
4
Dial gauge
75-100mm
Measure piston skirt
5
Inner dia. Gauge, Cylinder
6
Inner dia. Gauge,
10-34mm
7
Dial Test Indicator
1/100
8
Knife Straight Edge
plainness
9
Feeler Gauge
Plainness, adjusting valve clearance
10
Fuel Level Gauge
Fuel level length of carburetor
11
Plastic gauge
Fit clearance
12
pull tension gauge
Spring bounce
13
Tachometer
Engine rotation rate
14
Cylinder Pressure Meter
15
Oil Pressure Gage
Oil pressure
16
Barometer
Opening pressure of radiator cover
17
Ohmmeter
Resistance and voltage
18
Amperemeter
Opening of currency / switch
19
Thermometer
Liquid temperature
20
Timing Lights
Test spark timing
21
Torque Tester
Measure the outer diameters of swing
arm, valve rod and camshaft
Measure inner dia. of cylinder head
Inner dia. of swing arm, piston pin hole,
and rod head hole
Run-out
pressure in cyclinder
One Set
Tightening torque
Auxiliary Measuring Instrument
22
Alcohol Burner
Warming up
23
Magnet Stand
Install dialgauge
24
Slab
Auxiliary measure supplementary
25
V-Block
Run-out supplementary
26
Forcep
Install valve clip
27
Plier
Disassemble and install circlip
28
Joint Plier
Disassemble and install flange
29
Impact Driver
Disassemble cross recessed bolt
30
Slot Type Driver
31
Cross Type Driver
Remark
1. Maintenance Information
Special Purpo se Tools
No
Name
1
Spark Plug Wrench
2
CVT Wrenc h
Type
Function
172MM-022400-922-004
Disassemble/ ins tall spark plug
CF 188-051000-922-001
Disassemble/install CVT
CF 188-052000-922-001
drive/driven disc nut
3
Oil Filter Wrench
CF 188-011300-922-001
Disassemble/ ins tall oil filter
4
Piston Pin Remover
CF 188-040004-922-002
Disassemble piston pin
CF 188-031000-922-001
Disassemble magneto stator
Magneto stator
5
Remover
6
Crank case Diss ociator
7
Crank Remover
Divide L/R crank case
Disassemble crank shaft from
left crankcase
8
Install crank shaft on left
Crank Tool
crankcase
9
Valve Spring
CF 188-022006-922-001
Disassemble/ ins tall valve
spring
Compressor
10
Valve Former
CF 188-022004-922-001
Grind valve
11
Circ le Nut Wrench
CF 188-052000-922-003
Disassemble CVT driven disc
12
Driven Disc Clamp
CF 188-052000-922-004
Disassemble CVT driven disc
13
Driven Disc Former
CF 188-052000-922-002
Disassemble CVT driven disc
14
Limiting nut Wrench
CF 188-062204-922-001
15
Bearing Tool
One full set
Install bearing and oil ring
16
Bearing Remover
One full set
Disassemble bearing
17
Oil Ring Remover
18
Limiting Nut Wrench
Disassemble driven bevel gear
bearing limiting nut
Disassemble bearing
CF 188-060008-922-001
Disassemble front output shaft
bearing limiting nut
Diagnose failures of EFI
19
PDA
20
Oetiker Clamp Catcher
21
22
23
24
25
system
Disassemble/ ins tall fuel Pipe
Remark
Lubricant Grease, Sealant
Coated Sec tion
T urni ng Beari ngs
T hr ottle Cable Connec ting Por tion
T hr ottle Pedal M ovable P arts
B rak e Pedal Mo vable P arts
S wing A rm M ovable Par ts
Steer ing Inner Ci rc le Sur face
S eat Lock Movable P arts
T rans mis sion M ovable P arts
Attention
G r ease
Multi -pur pose
greas e
O pe ra tion M at eria l a nd Ins tallm e nt Supp le m e nta ry of Engine
E ng in e o pera tion m at eria ls inc lude lubrica nt (oil), gre as e (lubric an t gre a se ) a nd c oola nt, ins ta llm e nt
s upp lem e nta ry inc lu des pla ne s e ala nt a nd s cre w t hre ad s e ala nt.
N am e
Ty pe
Parts
Rem ark
capac ity
Spec ially
for
4-s trok e
m otorc yc le
lubric ant
SAE-10W -40、 20W-50
Subs titutes m us t be us ed
/oil
in the follow ing range.
API type: SE or S G grade
Rotati ng s ection and carriage in c ylinder,
2200m L(2.32Qts)(replac e
Rotati ng s ection and carriage in c rankc ase
oil)
Rotati ng sec ti on and c arriage in c ylinder
2300 m L(2.43 Qts )( replace
head
oil fil ter)
See Lubrication Sy stems D iagram( 5-14)
( R eplacem ent see 1-3)
2600 m L(2.75Qts )( engine
ov erhaul)
Lubricant w ith
Pis ton pin, valv e rod part, valv e ring, c am
moly bdenum
s haft
Greas e/lubric ant
grease
Coolant
# 3 MoS 2 lithium bas ed
Oil s eal lip, O ring and other latex s ealing,
greas e
bearing with s eals, and CVT bearing/housing
-35℃ anti-freez e, anti-rus t,
C apacity based on radiator
Cool ing s ys tem , water s eals
high –boiled c oolant
Plane s ealant
pi pe s ys tem
Coupl ing s urfac es of cas es, c ases
and
c ylinder, c ylinder head and cy linder head
c over
Sc rew
sealant
thread
Som e s crew thread
1. Maintenance Information
Wiring, Pipes, Cable Layout
3
1
2
4
1.Plug-in on Front Fender 2.Wirings in Middle Section 3.Plug-in on Rear Fender 4.Main Cable
(See Pic 2)
(See Pic 1)
(See Pic 3)
Picture 1
1
2
3
4
5
6
7
8
12
16
15
14
13
11
10
9
1.Front RH Headlight Plug-in 2.Fan Plug-in 3.Ignition Switch Plug-in 4.Backup Power Plug-in 5.Fuel Sensor
Plug-in 6.LH&RH Handlebar Switch Plug-in 7.2WD/4WD Switch Plug-in 8.Dashboard Plug-in 9.2WD/4WD
Switch Realy 10.4WD Locker Relay 11.Brake Light Relay 12.Flasher 13.LH Headlight Plug-in 14.Front LH Turn
Signal Plug-in 5.Radiator Cap 16.Front RH Turn Signal Plug-in
Picture 2
1
2
3
4
1.Trigger Coil Plug-in 2.Magneto Plug-in
3.Speedometer Sensor Plug-in
Picture 3
3
2
1
4.Shift Switch Sensor Plug-in
4
13
12
11
10
9
8
7
6
5
1.Fan Plug-in 2.Headlight Plug-in 3.Start Servo- Relay 4.Start Relay 5.Parking Brake Plug-in 6.Battery
7.Clock Setting Plug-in 8.Fuel Pump Relay 9.Oxygen Sensor Heat Fuse 10.Parking Position Diode
11.Neutral Position Diode 12.Troubleshooting Plug-in 13.Fusebox Plug-in
1. Maintenance Information
1
2
13
12
3
11
4
10
9
5
8
7
6
1.Gear Shift Mechanism 2.Oxygen Sensor Plug-in 3.Water Temp Sensor 4.Throttle Body
5.MAP Sensor 6.IAT sensor 7.Idle Air Control Valve 8.Speedometer Sensor 9.Starting Motor
10.Shift Rod 11.Radiator Water Outlet Hose 12.Reservoir Tank 13.Radiator Water Inlet Hose
1
2
6
5
4
3
1.Radiator Cap 2.Dashboard 3.Radiator Water Outlet Hose 4.Radiator
5.Radiator Water Outlet Hose 6.Horn
6
5
1
3
2
4
1.Rear Brake Hose 2.Master Cylinder 3.Brake Fluid Reservoir 4.Brake Cable
5.Four-way Connector 6.Front Brake Hose
1
1.Ignition Switch 2.Back-up Power Plug-in
2
1. Maintenance Information
1
2
3
1.Parking Cable 2.Throttle Cable 3.Choke Cable
1
2
1.Rear Turn Lights 2.Taillight
1
2
1.Front Turn Lights 2.Headlights
ECU
1. Maintenance Information
Failure Indicator
1
Failure Indiactor is located on the left top”1”of
instrument.
While the indicator flashing is faulty, failure uses 4digit flashing.
For example:0650,
“0” flashes 10 times,
“6” flashes 6 times,
“5” flashes 5 times,
“0” flashes 10 times,
See (Page 11-27) for the meaning of Diagnostic Trouble
Code.
While failure appears, use PDA to diagnose it.
Connect PDA with PDA connector, the location of PDA
connector (see Page 1-19) Picture 3. the use of PDA
(see Page 11-26).
Power Output Socket
Output Voltage:DC12V
The power only supply for the rear turning light,
taillight and rear registration plate lamp of the trailer.
Power Outlet
2 Vehicle Body and Muffler
Overhaul Info ………………………………………2-1
Footrest Board (LH, RH) …………………………2-10
Troubleshooting ……………………………………2-1
Rear Fender, Engine Skid Plate (Front, Center, Rear),
Front Rack, Bolt Cap ………………………………2-2
Double Seat, Protection Plate …………………2-11
Seat, Seat Support & Rear Rack……………………2-3
Front Inner Fender (R&H), Front Protector (RH, LH)…2-13
Front Top cover, Dashboard Cover…………………2-4
Rear Protector ( RH,LH), Bumper, Bumper Protector…2-14
Side Support (LH&RH) ……………………………2-5
B u m p e r C a p … …… … …… … …… … …… 2 - 1 5
Rear Top C over…………………………………2-6
Front Vent Grille, Fuel Tank………………………2-16
Left Side Panel……………………………………2-7
Bott om Plate, Fuel Tank………………………2-17
Right Side Panel ……………………………………2-8
Mu ff ler … … … … … … … … … … … … 2 -1 8
Fuel Tank Top Cover, Front Fender ………………2-9
Description of Visible Parts………………………2-19
Overhaul Information
Operation Cautions
WARNING:
Gasoline is highly flammable, therefore smoke and fire are strictly forbidden in the work place. Special
attention should also be paid to sparks. Gasoline may also be explosive when it is vaporized, so operation should be done in a well-ventilated place.
Remove and Install muffler after it is fully cold.
This chapter is on the disassembly and installation of rack, visible parts, exhaust pipe,
fuel tank.
Hoses, cables and wiring should be routed properly.
Replace the gasket with a new one after muffler is removed.
After muffler is installed, check if there is any exhaust leakage.
Tightening Torque
Muffler Rear Fixing Bolt: 35-45N.m
Muffler Exhaust Pipe Bolt: 35-45N.m
Muffler Body Fixing Bolt: 35-45N.m
Troubleshooting
Loud exhaust noise
Broken muffler
Exhaust leakage
Insufficient power
Distorted muffler
Exhaust leakage
Muffler clogged
muffler and
Front Rack, Bolt Cap
Bolt Cap
Remove:
Front Rack
Remove bolt caps;
Front rack bolts can now be seen.
Front Fender
Front Cover
Bolt1
Remove fixing Bolt 1.
(one for each on the left and right.)
Remove fixing Bolt 2;
Remove front rack.
Installation:
Reverse the removal procedure for installation
Tightening Torque:
Fixing Bolt 1, Bolt 2 35 N.m -45N.m
Fixing Bolt 3, Bolt 4
25 N.m -30N.m
Bolts 2
2 Vehicle Body and Muffler
Seat
Seat
Seat Latch
Remove:
Pull upward seat latch;
Lift and push seat backward.
Installation:
Press upward seat latch;
Press seat forward and down.
NOTE:
Shake seat left,right, front and back to make sure that
the seat is firmly installed.
Rear Rack
Bolts 1
Remove:
—Seat (
2-3)
—Bolt 1, bolt 2
Remove seat support.
Bolts 2
Remove Bolt 3 for rear rack and rear fender
from rear fender bottom;
Remove Bolt 1;
Remove Rear Rack.
Seat Plate
Rear Fender
Installation:
Reverse the removal procedure for installation.
Tightening Torque
Bolt 1 35N m-45N m
Bolt 2 35N m-45N m
Bolt3 8N m-12N m
Bolts 3
Bolts
Front Top Cover
Remove:
Front Rack
6 nuts;
Front Top Cover.
Assemble:
Reverse the removal process and direction.
Front Cover
Dashboard Cover
Dashboard Cover
Remove:
--2 pieces Bolt 1
--2 pieces bolt 2
--Dashboard Cover
Bolts 1
Installation:
Reverse the removal process and direction for
installation.
Bolts 2
2 Vehicle Body and Muffler
Front Side Support(Left)
Remove:
Bolt 1;
Front Side Support.
Assemble:
Reverse the removal process and direction.
Bolts 1
Front Side Support,LH
Front Side Support(Right):
Same as Left Side Support.
Rear Top Cover
Remove:
Clips
Rear Rack
Seperate clasps of rear top cover from rear
fender;
Remove Rear Top Cover
Installation:
Reverse the remove procedure and
direction for installation .
Bolt 1
Rear Top Cover
Bolt 2
Gear Shift Unit Fender
Remove:
Bolt 1
Bolt 1
Bolt 2
Remove Gear Shift Unit Fender.
Installation:
Reverse the remove procedure and
direction for installation .
Bolt 2
Fender, Gear Shifting
2 Vehicle Body and Muffler
Left Side Cover
Bolts
Remove:
Seat
Left Side Cover Bolt
Left Side Cover
Installation:
Reverse the remove procedure and
direction for installation .
Left Side Panel
Rear Protector
Rear Protector
Remove:
--Rear Rack
--Rear Top Cover
--Rear Link Plate
--Rear Left Side Support
--Rear Right Side Support
--Rear Turning Light Connector
--Bolt 1,2,1
--Rear Protector
Bolts 1
Bolts 1
Installation:
Reverse the remove procedure and direction
for installation.
Rear Link Plate
Bolts 2
Rear Link Plate
Remove:
--Bolt 3
Rear Link Plate
Installation:
Reverse the remove procedure and direction
for installation.
Bolts 3
Rear Side Panel
Remove:
Seat
Right Side Cover Fixing Bolt
Bolts
Right Side Panel
Remove connecting Bolt 1 between Right
Side Panel and Front Fender at bottom
of Front Fender;
Remove Right Side Panel.
Bolts 1
Front Fender
Installation:
Reverse the remove procedure and
direction for installation .
Rear Side Protector,LH
Rear Right Side Support
Remove
--Bolt 2
--Remove Rear Right Side Support
Installation:
Reverse the remove procedure for installation.
Removal and Installation and
Rear Right Side Support is
same with Left side.
Bolts 2
2 Vehicle Body and Muffler
Top Cover, Fuel Tank
Remove:
Bolts 1
Seat
Front Rack
Front Top Cover
Left Side Panel
-Right Side Panel
Bolt 1, 2
Fuel Tank Top Cover
Fuel Tank Cap
Bolt 3, 4
Fuel Tank Cap
Bolts 2
Remove Fuel Tank Top Cover.
Installation:
Reverse the remove procedure and
direction for installation .
Front Fender
Front Fender
Remove
--Front Rack
--Front Top Cover
--Left, Right Side Panel
--Fuel Tank Top Cover
--Left,Right Side Support
Loosen Cable Connector of Front Fender;
Remove Electronics Parts of Front Fender;
Remove 3 Front Fender bolts fixed in Frame.
Bolts 1
Bolts 4
Remove 4 bolts fixed with left and right
footrest;
Remove Front Fender.
Installation:
Reverse the remove procedure for installation.
Bolts 3
Footrest,Left Side
Remove:
Left Side Panel
Remove three Bolt 1 and 3 nuts connecting
with Front Fender.
Bolts 1
Bolts 1
Remove three Bolt 2 and 3 nuts connecting
with Rear Fender.
Bolts 2
Remove Bolt 1;
Remove Left Footrest.
Installation:
Reverse the remove procedure for Installation.
Footrest,Right Side
Removal and Installation same with Left side.
Left Footrest
2 Vehicle Body and Muffler
Rear Fender
Rear Fender
Bolts 1
Remove:
--Seat
--Rear Rack
--Rear Top Cover
--Left,Right Side Panel
--Lef,RightSide Support
--Rear Protector
Remove Battery Bracket and Fixing Plate
Remove Battery
Remove Bolt 1;
Remove Nut 1;
Remove Electonic Parts from Rear Fender;
Loosen Cable Connector from Rear Fender;
Upwardingly Remove Rear Fender.
Bolts 1
Engine Front,Middle and Rear Skid
Plate; Protector Plate of Double
Seat.
14
13
12
4
1
2
5
6
7
11
8
9
3
10
1.Bolt1
2.Bolt2
6.Middle Engine Skid Plate
7.Bolt5
11.Protection Plate
12.Rear Engine Skid Plate
3.Front Engine Skid Plate
4.Bolt3
8.Bolt6
9.Bolt7
13.Bolt9
13.Bolt9
5.Bolt4
10.Bolt8
14.Bolt10
Disasembly
NOTE:Side skid Plate(Front,Middle, Rear)
and Double Seat Protection are located
at bottom of vehicle. The mainteanace
person should work under bottom of vehicle when disassemble the above parts.
For safty , make sure the vehicle is
firmly parked.
Engine Skid Plate(Front)
Remove Bolt 1, 2, 3,and 4;
Remove Engine Front Skid Plate.
Installation:
Reverse the remove procedure for Installation.
Engine Skid Plate(Middle)
Remove Bolt 5 and 6;
Remove Middle Engine Skid Plate.
Installation:
Reverse the remove procedure for Installation
Double-Seat Protection Plate
Remove Bolt 7 and 8;
Remove Double-Seat Protection Plate.
NOTE: No Protection Plate for single-seat .
Installation:
Reverse the remove procedure for Installation
Engine Skid Plate(Rear)
Removal:
Remove Bolt 9 and 10;
Remove Rear Engine Skid Plate.
Installation:
Reverse the remove procedure for Installation
2 Vehicle Body and Muffler
Right Front Inner Fender
Removal:
Remove Bolt 1 ,and remove Right Front Inner
Fender.
Installation:
Reverse the remove procedure for Installation.
NOTE: Hook Water Pump with Clip of Right
Inner Side Fender during Installation.
Bolt 1
Right Front Inner Fender
Left Front Inner Fender
Removal:
Remove Bolt 1 ,and remove Left Front Inner
Fender.
Installation:
Reverse the remove procedure for Installation.
Front Left Protector
Remove:
--Bolt 1
Pull backward and remove front Front
Left Protector.
Front Inner Fender,LH Bolts 2
Installation:
Reverse the remove procedure for Installation.
Front Right Protector
Removal and Installation same with Left Side.
Bolt
Front Left Inner Fender
Removal:
Bolt 1
Bolt 2 Front Rear Protection
Remove Bolt 1 and 2;
Remove Front Left Inner Fender
Installation:
Reverse the remove procedure for Installation
Front Engine Skid Plate
Front Right Inner Fender
Removal and Installation same as Left Side.
Bumper, Bumper Protector
Remove:
Bolts
Remove two Bolts of Engine Front Skid Plate
fixing into the Bumper.
Remove Bolt 1, 2, 3 and 4.
Remove Bumper and Bumper Protector
Bumper
Bolt 1
Bolt 2
Remove Bolt 5 connecting Bumper and Rack.
Bolt 5
Bolt 3
Bolt 4
2 Vehicle Body and Muffler
Bumper Protector
Remove:
Bolts 1
--Loosen Front Turning Light Connector.
--Remove Bumper and Bumper Protector.
Remove tapping screw 1 from Bumper;
Remove Bumper Protector.
Protector,Bumper
Installation:
Reverse the remove procedure for Installation.
Front Turnlight
Bumper Protector Cap
Remove:
Pull the two Caps from Bumper .
(There are only 2 caps in this vehicle.)
Installation:
Press Caps into Bumper Pipe.
Cap,Bumper Protector
Front Vent Grill
Remove:
--Loosen Connector of Front Head Light
--Remove Front Fender
--Remove Bumper
--Remove Bolt 1, 2 and 3
--Remove Vent Grill
Bolts 1
Front Vent Grill
NOTE: For removal of front vent grille only,
Just remove 2 fixing bolts
of bumper and 2 center fixing bolts,
then pull bumper down.
Installation:
Reverse the removal procedure for installation.
Bolts 2
Bolts 3
WARNING: Gasoline is highly flammable, therefore smoke and fire are strictly forbidden in the work
place.
Special attention should also be paid to sparks.
Gasoline may also be explosive when it is vaporized,
Fuel Tank
so operation should be done in a well-ventilated place.
Remove Left and Right Side Panel
Remove Front Fender
Remove Fuel Tank Top Cover
Remove Bolt 4;
Loosen Fuel Sensor 3P Connector.
Bolts 4
2 Vehicle Body and Muffler
Remove Fuel Line 1 and Circlip;
Remove Fuel Tank.
Installation:
Reverse the removal procedure for installation.
NOTE:
Fuel Line(Circlip)
Be careful not to damage main cable,
pipes and hoses. Main cable, cables,
pipes and hoses should be routed properly
according to the routing drawing.
Take precaution against fuel leakage
when removing fuel Fuel Hose I.
Remove:
--Fuel tank
--Bolt 1
--Bolt 2
--Fuel tank top cover
Installation:
Reverse the removal procedure for
installation.
NOTE:
Be careful not to damage main cable, pipes and hoses.
Main cable, cables, pipes should be routed properly
according to the routing drawing.
Bottom Plate,Fuel Tank
Bolts
Muffler
Caution: Perform disassembly only
after the muffler is cooled down.
Remove:
--Seat (2-3)
--Right side panel (2-8)
--Nut1, Nut 2 for exhaust pipe elbow
Bolt 1
Bolt 2
Bolt 2
Bolt 1
Remove Bolt ;
Remove Bolt 2, Bolt 3
Remove muffler .
Installation:
Reverse the removal procedure for installation.
Bolt 3
NOTE:
Replace sealing gasket when installing the muffler.
2 Vehicle Body and Muffler
Visible Parts:
4
7
5
3
1
6
8
9
2
21
10
15
16
20
17
14
11
13
18
19
12
1.Front Suspension Protector,LH 2.Front Rack 3.Front Top Cover 4.Dashboard Cover 5.Top Cover,Fuel
Tank 6.Seat 7.Rear Rack 8.Rear Top Cover 9.Rear Protector 10.Rear Link Plate 11.Rear Suspension
Protector,LH 12.Rear Side Protector 13.Rear Fender 14.Left Footrest 15.Left Side Panel
16.Front Fender 17.Front Inner Fender 18.Front Protector 19.Front Vent Grill 20.Bumper Protector
21.Front Bumper
3.Checks & Adjustment
Overhaul Info...................................................3-1
Maintenance Interval........................................3-2
Inspection&Maintenance..................................3-3
Steering Column Brake System........................3-6
Wheels...........................................................3-8
Suspension System........................................3-10
Gear Shifting,Fuel Device.................................3-11
Check the Throttle...........................................3-12
Cooling System...............................................3-13
Lighting System...............................................3-16
Valve Clearance................................................3-17
Engine Idle Speed&Spark Plug..........................3-18
Air Filter...........................................................3-19
Fuel Hose&Drive Belt.........................................3-20
Inspection of Lubrication System........................3-22
Inspection of Cylinder Pressure..........................3-24
Inspection of Clutch Engagement.......................3-26
Overhaul Info
Operation Cautions
NOTE:
-DO NOT keep the engine running for long time in a poorly ventilated or enclosed place because of the harmful
components like CO, etc, in the exhaust gas.
-The muffler and engine are still very hot when the engine is just stopped. Careless contact may cause serious
burn. Be sure to wear fatigue dress with long sleeves and gloves if the work has to be done after the engine is
just stopped.
-Gasoline is highly flammable, smoking is strictly forbidden in the work place. Keep alert on the electrical
sparks. Besides, vaporized gasoline is highly explosive, so work should be done in a well-ventilated place.
-Be careful that your hands or clothes not get pinched by the turning or movable parts of the driving system.
NOTE:
The vehicle should be parked on hard and level ground.
M aintenance Interval
The table below lists the recommended intervals for all the required periodic maintenance work
necessary to keep the engine at its best performance and economy. Maintenance intervals are
expressed in terms of kilometer, miles and hours, whichever occurs first.
N ote: Maintenance interval should be shortened on engines that are used in severe conditions.
Interval
Initial
Km
250km/155miles
Every
Every
500km/300miles
1000
Item
km/600miles
H ours
Initial
Every
Every
50 hours
100 hours
I
—
I
Idle Speed
I
I
—
Spark Plug
I
—
I
20 hours
Valve Clearance
—
I
C
—
—
I
—
—
I
—
I
—
Engine Oil
R
—
R
Oil Filter
R
—
R
Coolant Level
I
I
—
Water H ose & Pipes
I
—
I
High-Pressure Fuel
H ose
C lutch
D rive Belt
C oolant
I=Inspectio n and adju st, or replace if necessary
R =Replace
C =Clean
R eplace every
IN: .002 ~.004in.
EX: .006~.009in.
1400±100r/Min
No
carbon
deposit
Gap:.030~.040in.
R eplace every 6000Km
Air Filter
R e mark
year
Replace
every
1200miles
Replace every 4
years
Replace
every
1200miles
3.Checks & Adjustment
○: Interval
Inspection & Maintenance
Item
Part
Item
Handlebar
Steering
System
Steering
system
Brake lever
Brake
System
Connecting
rod, oil pipe
& Hose
Hydraulic
brake and
brake disc
Daily
Operation agility
○
Damage
○
Installation condition of steering system
○
Intervals
1/2
Annual
Year
Sway of ball stud
○
Free play
○
○
Brake
Efficiency
○
○
Looseness,
Slack and damage
○
Front and rear brake fluid level
○
Front: lever end 0mm
Rear : lever end 0mm
○
Brake fluid should
above LOWER limit
○
Brake disc damage and wear
○
○
Tire pressure
○
○
Chap and damage
○
○
Wheel
System
○
Suspension
arm
Buffer
System
Shock
absorber
○
Sway of front wheel bearing
○
○
Sway of rear wheel bearing
○
○
○
○
○
○
Oil leakage and damage
Drive
Train
No wear indication on the
surface
of
tire
(the
remained depth of groove
should not be less than
1.6mm)
○
○
Function
Front axle
○
Loosened wheel nut and axle
Sway of Joint parts, rocker arm
damage
be
Replace
when
the
thickness of front brake
disc is less than 2.5mm,
rear brake less than
6.5mm.
Front tire: 35kPa
/5Psi
Rear tire:
30kPa
/4Psi
Groove depth and abnormal wear
Driving
Standa rd
Transmission, lubrication
○
○
Rear axle
Transmission, lubrication
○
○
Gear box
Transmission, lubrication
○
○
Final shaft
Looseness of joint parts
(Drive shaft)
Sway of Spline
Remove filling bolt, add oil
till oil level reaches edge
of filling hole.
Item
Part
Item
Final
shaft
Drive train
(Drive
shaft)
Electrical
System
Intervals
Ignition
Device
Battery
Wiring
Looseness of joint parts
Daily
O
1/2
Year
O
Sway of Spline
Annual
O
Spark plug
O
Ignition timing
Terminal Joint
Looseness and damage of
joints
Fuel leakage
O
Spark plug gap:
0.8-0.9mm/.030~.
040in.
O
O
O
Fuel device
Throttle
Cooling system
Coolant level
Coolant leakage
Standard
O
O
O
O
Throttle
clearance:
3~5mm
grip
3.Checks & Adjustment
It em
Part
Lighting devi ce and
turning indic tors
Alarm and lock devic e
Instrum ents
Exhaus t pi pe and
m uffler
Frame
O thers
Abnormal parts whic h
can be determ ined
when driv ing
I tem
Function
Function
Function
Loosenes s or dam age
caused by im proper
ins tallation
Function of m uffler
Looseness and/or
dam age
Lubric ati on & grease of
fram e parts
M ake sure if there is any
abnorm al with relative
parts.
Daily
I nterv als
1/ 2
Annual
Year
○
○
○
○
○
○
○
○
○
Standard
Steering Column
Park the vehicle on level place, hold steering handlebar,
and shake in the direction as illustrated on the right
and see if there is any sway.
In case of any movement, check if it is the problem of
the steering stem or other parts and then do the maintenance accordingly.
In case of movement of the steering stem, tighten the
locknut or disassemble the steering stem for further
check.
Park the vehicle on level place, slowly turn the handlebar left and right to see if it can turn freely.
In case there is any hindrance, check if it is from the
main cable assembly or other cables.
If no, check the steering tie-rod end, and check if the
steering stem bearing is damaged.
NOTE:
Make sure the steering can be operated freely.
An accident may occur
if the handlebar is out of control.
Brake system
Front brake lever free play
Operate front brake lever and check brake efficiency
and brake lever function.
Check free play of front lever end.
Free play: 0 mm
3.Checks & Adjustment
Master Cylinder
Brake Fluid Reservoir
Lower
<Fluid level>
Check the Brake Fluid Level
When the brake fluid level is near to the lower limit
line, check master cylinder, brake hoses and joints
for leakage. Remove the two mounting screws on fluid
reservoir cap.
Remove the cap, add DOT3 or DOT4 brake liquid till
the upper limit line.
Screws
-Do not mix with dust or water when adding brake
fluid.
-Use only the recommended of brake fluid
to avoid chemical reaction.
-Brake fluid may cause damages to the surface of the
plastic and rubber parts.
Keep the fluid away from these parts.
-Slightly turn the handlebar left and right till the master cylinder is in horizontal, then remove the fluid reservoir cap.
Brake Disc, Brake Pad
< Wear of brake pad>
Check the brake pad wears from the mark as indicated.
Replace the brake pad if the wear has reached position of wear limit trough.
Note The brake pad must be replaced with a whole
set.
Checking and replacing the brake disc
Front brake disc thickness: 2.5 mm ¡úReplace
Rear brake disc:
6.5 mm Replace
Min. limited thickness of the front brake disc: 2.5mm
Min. limited thickness of the rear brake disc: 6.5mm
Change the Brake Fluid
< Changing Brake Fluid>
Change the brake fluid once every year.
Brake Disc
Wheels
Lift front wheel on level place, and make sure there is
no loading on the wheels.
Shake the front wheel left and right to check whether
the joint of front wheel is tightened and check whether
it sways.
Not tighten enough: Tighten it
Sway:
Replace the rocker arm
A
Front Toe-in size
Park the vehicle on level place, measure the front toein
Toe-in: B-A=0-10mm/0-3/8in.
B
Toe-in out of the range:
Adjust the locknut of tie-
rod
Locknut
NOTE:
After the toe-in has been adjusted, slowly run the vehicle to check whether the direction of vehicle can be
controlled by handlebar.
Tie-rod
3.Checks & Adjustment
Tire Pressure
Check the pressure of the tires
with a pressure gauge.
NOTE:
Check the tire pressure after tires are cooled.
Driving under improper tire pressure
will reduce the comfort of operation
and riding, and may cause abnormal
wear of the tires.
Pressure Gauge
Specified pressure /tire
Tire Tread
Check the tire tread.
Tread Height: < 3mm¡úReplace with new tires
NOTE:
When the tread height is less than 3mm, the tire should
be replaced immediately.
>3mm
Wheel Nut and Wheel Axle
Check front and rear wheel axle nuts for looseness;
Loosened axle nuts
Tighten
Tightening Torque:
Front wheel axle nut:
110-130N.m(11.2kgf.m-13.3kgf.m)
Rear wheel axle nut:
110-130N.m(11.2kgf.m-13.3kgf.m)
Axle Nut
Movement of Wheel Bearing
Lift the front wheel ;
Make sure there is no loading on the vehicle;
Shake the wheel in axial direction for any movement;
In case of any movement,
disassemble the front wheel and check the bearing.
Suspension System
Park the vehicle on lever place, press the vehicle Several times up and down as illustrated on the right.
In case of any rocking or abnormal noise, check whether
there is any oil leakage from shock absorbers, or any
damage or looseness of suspension parts.
3.Checks & Adjustment
Adjusting the Shock Absorber
Use special tools to adjust the length of
shock absorber spring according to loading
requirement;
Turn clockwise to adjust from high to low to
change spring preload of shocks.
Absorber
Adjust Gear
Locknut
Gear Shifting
Shift the gear to check for flexibility and
gear engagement;
Adjust the gearshift rod if necessary;
Release the locknut to adjust the length of
gearshift rod.
Gearshift
Gearshift Rod
Fuel Device
Status of the fuel system;
Remove the seat
Check the fuel line for any aging or damage;
Aged or damaged fuel line: Replace;
Check if there is cracks or bending
with the vacuum tube;
Fuel Line
Checking the Throttle Lever
Throttle Lever
Check the free play of throttle lever
Free play: 3-5mm
Out of range:
Adjust
Loosen locknut of throttle cable
turn the adjustor and adjust free play of throttle lever
After adjusting, tighten locknuts and install throttle
cable sleeve
Replace with a new throttle cable if the specified free
play could not be acquired by adjustment or if there
is still stickiness with the throttle.
3-5mm
Locknut of Throttle Cable
Adjusting the Speed Limiter
The speed limiter is to limit the opening of throttle
Check the maximum length of limiter screw thread
Maximum screw thread: a=12mm
Adjust with a screw driver.
NOTE:
For beginners, the speed limit should be fully
tightened.
Drivers with certain skills may adjust
the throttle with speed limiter
Maximum length of screw thread is 12mm.
It is recommended to adjust the thread length to 35mm.
a
3.Checks & Adjustment
Cooling System
NOTE:
Check coolant level from reservoir tank.
Do not check from radiator.
If the radiator cap is opened while the engine is hot
(over
), the pressure of the cooling system will
drop down and the coolant will get boiled rapidly.
DO NOT open the radiator cap until the coolant temperature drops down.
-Coolant is poisonous, DO NOT drink or splash it to
skin, eyes, and clothes.
-In case the coolant gets to the skin and clothes,
wash with soap immediately.
-In case the coolant gets into eyes, rinse with plenty
of water and go to consult the doctor
-In case of swallowing the coolant, induce vomit and
consult the doctor.
-Keep the coolant in a safe place and away from reach
of children.
Reservoir Tank
Coolant level
Coolant might reduce due to natural evaporation.
Check the coolant level regularly.
NOTE:
-Only use anti-freeze. Ordinary water may cause engine rust or cracks in winter due to freezing.
-Park the vehicle on level ground for checking of the
coolant.
Inclined vehicle body will cause incorrect judging of
the coolant level.
-Check the coolant after the engine is warmed up.
Start and warm up engine.
Stop the engine.
Remove left side panel
Check if the coolant level is between the upper and
lower limit.
Mark”Upper” Mark”Lower”
When the coolant level is below the LOWER limit,
remove reservoir tank cap and add coolant till upper
limit.
(Add coolant or diluted original liquid).
Recommended coolant: CFMOTO coolant
Mark”Upper”
Standard density: 50%
( Freezing temperature of coolant varies according to
the different mixture ratio. Adjust the mixture ratio
according to the lowest temperature in the place where
the vehicle is used.)
If the coolant reduces very fast, check if there is any
leakage.
The cooling system may be mixed with air when there
is no coolant in the reservoir tank and the air should
be bled before adding coolant.
Mark”Lower”
Coolant Leakage
Check radiator hose, water pump, water pipes and
joints for leakage.
In case of any leakage, disassemble and do further
check.
(Refer to Chapter 4)
Check the radiator hose for aging, damages or cracks.
The rubber hose will naturally get aged after a period
of service time. The aged hose may get cracked when
the cooling system is heated. Nip the hose with fingers and check if there are any tiny cracks.
In case of any abnormal, replace with a new hose.
Check the clamps of the coolant pipes and hose.
Tighten properly in case of any looseness.
Check radiator fins for mud and dust clog or damage.
Correct the bent fins; clean the mud with water and
compressed air. When the damaged area of
the radiator fin is over 20%, replace with a new
radiator.
Radiator
Reservoir Tank
3.Checks & Adjustment
Inspection of Cooling System
Check initially at 50 hours or 500km, replace coolant
annually.
Check radiator, reservoir tank and water hoses.
Leakage or Damage: Replace
Check coolant level by observing the upper and the
lower limit on the reservoir tank.
If the level is below lower limit, fill coolant until the
level reaches the upper limit.
1
Replacing Coolant
-Remove radiator cap and reservoir tank cap
-Place a pan below water pump, and drain coolant by
removing drain plug and water hose
-Drain coolant from reservoir tank.
2
WARNING:
-Do not open radiator cap when engine is hot, you
may be injured by escaping hot liquid or vapor.
-Engine coolant is harmful. If coolant splashes in your
eyes or clothes, thoroughly wash it away with water
and consult a doctor. If coolant is swallowed, induce
vomiting and get immediate medical attention.
-Keep coolant away from reach of children
-Clean radiator with fresh water, if necessary.
-Connect water hose and tighten drain bolt
securely.
-Fill the specified coolant into the radiator.
-Loosen bleed bolt on water pump, when coolant
flow from bleed bolt, tighten the bolt. Install radiator
cap securely after filling coolant.
-Start the engine and keep it running for several
minutes. After warm up and cooling down the engine,
open radiator cap and check coolant. Fill the specified coolant until the level is between the upper and
lower lines on the reservoir tank.
CAUTION:
Repeat the above procedures several times and make
sure the radiator is filled with coolant and air is
discharged.
Inspection of Cooling System
4
3
5
Check Water Temperature Gauge
When engine is not working, the water temperature
should be in the
position. Start the engine to
check if the indicator works. If the indicator is not
working, do the maintenance in time.
Instrument
Lighting System
Adjusting headlight light beam
Turn the headlight beam adjusting screw with a cross
screwdriver and adjust the high/low beam to meet the
requirement.
Headlight Beam Adjusting Screw
Water Temp Gauge
3.Checks & Adjustment
VALVE CLEARANCE
2
1
Inspect initially at 20-hour break-in and every 100 hours
or every 1000km thereafter. Inspect the clearance after removing cylinder head.
Excessive valve clearance results in valve noise and
insufficient valve clearance results in valve damage and
reduced power.
Check the valve clearance at the period indicated above
and adjust the valve clearance to specification, if
necessary.
-Remove cover plate recoil starter
-Remove inspection cap on left crankcase.
-Remove 2 valve adjusting cover
-Turn the crankshaft until the line of T.D.C. on rotor
is aligned with mark of inspection hole on left
crankcase.
-Insert feeler gauge to check the clearance between
the valve stem end and the adjust bolt on the rocker
arm.
Valve Clearance (When cold)
IN: 0.05-0.10mm/.002-.004in.
EX: 0.17-0.22mm/.006-.009in.
3
4(IN)
4(EX)
NOTE:
-The valve clearance must be adjusted when the engine is cold.
-Adjust the valve clearance when the piston is at the
Top Dead Center (T.D.C.) on the compression stroke.
If the clearance is incorrect, bring it into the specified
range using the special tool.
Loosen valve adjust bolt and nut, insert a feeler gauge
(IN: 0.1mm, EX:0.2mm between the valve stem end
and valve adjusting bolt, tighten valve adjust bolt, make
sure it slightly contacts the feeler gauge, tighten bolt
and nut.
6
5
Take out the feeler gauge, measure the clearance.
If the clearance is incorrect, repeat the above steps
until the proper clearance is obtained.
Locknut: 10 N.m
CAUTION:
Securely tighten the locknut after completing adjustment
Install:
2 valve adjusting cover;
Inspection cap;
Recoil starter;
Cover plate;
Apply a small quantity of THREAD LOCKER to recoil
starter fixing bolts.
1
2
3
4
1.Nut 2.Valve Clearance
3.Rocker Arm 4.Valve
Tools:
Valve adjuster
Feeler gauge
Material:
Thread Locker
ENGINE IDLE SPEED
Inspect initially at 20 hours run-in and every 50 hours
or 500km thereafter.
Start the engine and warm it up for several minutes,
measure engine speed with a tachometer. Set the
engine idle speed between 1300~1500 Rpmby turning the throttle stop screw of carburetor.
Engine idle speed: 1400 Rpm 100Rpm
NOTE:
Make this adjustment when the engine is hot
Tool: Tachometer
SPARK PLUG
Inspect initially at 20 hours run-in and every 100 hours
or 1000km thereafter. Replace every 6000km.
Remove the spark plug with a special tool
Specification: DER7EA-9(NGK)
If the electrode is extremely worn or burnt, or spark
plug has a broken insulator, damaged thread, etc, replace the spark plug with a new one.
Valve Clearance
Connected with Ignition Coil
3.Checks & Adjustment
In case of carbon deposit, clean with a proper tool.
SPARK PLUG GAP
Measure the spark plug gap with a feeler gauge.
Out of specification: Adjust
Spark plug gap: 0.8-0.9mm/.030-.040in.
0.8-0.9mm/
0.030-0.040in.
CAUTION:
Check the thread size and reach when replacing the
spark plug. If the reach is too short, carbon will be
deposited on the screw portion of the spark plug hole
and engine damage may result.
Installation:
CAUTION:
To avoid damaging the cylinder head threads; first,
tighten the spark plug with fingers, and then tighten it
to the specified torque using the spark plug wrench.
Tightening Torque: 18 N.m
Tool: Spark Plug Wrench, Feeler Gauge
2
Air Filter
Inspect every 50 hours or 500 km/300miles, clean it
every 1000km/600miles if necessary.
If the air cleaner is clogged with dust, intake resistance will be increased, with a resultant decrease in
power output and an increase in fuel consumption.
Check and clean the air filter as following:
Remove fixing clamp and top cover
1
4
3
Be careful not to drop the o-ring into the air filter box
that is attached to the air filter top cover.
Loosen screw
remove filter element separate
support filter element and filter element seat
-Fill a wash pan of a proper size with a non-flammable cleaning solvent A. Immerse the filter element
in cleaning solvent and wash it.
-Press the filter element between the palms of both
hands to remove the excess solvent. Do not twist or
wring the element or it will tear.
-Immerse the element in engine oil B, and then
squeeze out the excess oil leaving the element slightly
wet.
5
6
7
A--Non-flammable cleaning solvent
B Engine oil SAE#30 or SAE15W/40.
Never use with gasoline or low flash point
solvents to clean the filter element
A
Inspect the filter element for tears.
torn element must be replaced.
B
NOTE:
The surest way to accelerate engine wear is to
operate the engine without the element or with
torn element. Make sure that the air filter
element is in good condition at all times.
If driving under dusty conditions, clean the
air filter element more frequently.
Remove the drain plug of air box to drain out
any water.
8
Fuel Hose
Inspect every 100 hours or 1000km/600miles,
replace every 4 years.
Inspect the fuel hose for damage and fuel
leakage.
If any damage is found, replace the fuel hose
with a new one.
Drive Belt
Removal:
Fuel Hose
Remove CVT cover
Hold the primary sheave with special tool and
loosen primary sheave nut.
Special Tool: Rotor Holder
Remove primary sliding sheave 1;
Hold the secondary sheave with special tool
and loosen secondary sheave nut.
Remove secondary sheave together with drive belt.
Special Tool: Rotor Holder
Remove drive belt from secondary sheave.
1
3.Checks & Adjustment
Inspection:
Inspect drive belt for wear and damage.
If any cracks or damages are found,
replace drive belt with a new one.
Inspect drive belt for width, if width is
out of service limit, replace drive belt with a new one.
Service Limit: 33.5mm/1.32in.
Tool: Vernier Caliper
Installation:
Reverse the removal procedure for installation.
Pay attention to the following:
Insert drive belt, as low as possible,
between secondary sliding sheave and primary
fixed sheave.
Hold secondary sheave with a special tool and
tighten the nut to the specified torque.
Nut, Secondary Sheave: 115 N.m/84 Ibs.ft.
Install primary sheave and nut. Hold the primary
sheave with a special tool and tighten the nut
to the specified torque.
Nut, Primary Sheave:115N.m/84 Ibs.ft.
Turn primary sheave, until the drive belt is
properly seated and both the primary and
secondary sheaves rotate together smoothly
and without slipping.
CAUTON:
-Fit the drive belt with the arrow on the drive
belt points toward normal turning direction.
-The drive belt contact surface of the driven
face should be thoroughly cleaned.
Install CVT cover.
Inspection of Lubrication System
Replace engine oil and oil filter initially at 20 hours or
250km and every 100 hours or 1000km thereafter.
Inspect the engine oil at every 10 hours.
1
Check Engine Oil Level
A
-Keep the engine in a level position.
-Remove the fixture A, fixture B, then remove the left
side cover 1.
-Remove oil dip rod 2
-Clean oil dip rod, insert oil dip rod but do not tighten
it.
-Take out oil dip rod and check if oil is between upper
and lower limit.
-If the engine oil is insufficient, fill more oil until the
sufficient oil is obtained.
Engine Oil: SAE15W/40 classification SF or SG
B
Oil Dip Rod
2
-Keep the engine in a level position
-Do not tighten oil dip rod when measuring oil level
Upper
Lower
Replacing Engine Oil
-Remove left side cover 1, oil dip rod 2, drain bolt 3
and washer 4.
-Drain out the engine oil while the engine is still warm.
-Clean oil dip rod, drain bolt and washer with solvent.
-Install washer and drain bolt.
Drain Bolt: 30 N.m/22 Ibs.ft.
-Fill engine oil. ( about 1900ml)
3
4
3.Checks & Adjustment
-Install oil dip rod, start the engine and allow it to run
for several minutes at idling speed.
-Turn off the engine and wait for about 3 minutes, and
then check the oil level on the dipstick.
Caution:
The engine oil should be changed when the engine is
warm. If the oil filter should be replaced, replace engine oil at the same time.
Replacing Oil Filter
-Remove relative parts ( see Replacing Engine Oil)
-Remove oil filter with the special tool
-Install washer and drain bolt
-Install new oil filter with the special tool
-Fill engine oil (about 2000ml) and check (see Replacing Engine Oil)
1
Tool: Oil Filter Wrench
Oil Filter Wrench
Engine Oil Capacity
When replacing oil: 1.9L/2.01Qts
When replacing oil filer: 2.0 L/2.11Qts
Engine overhaul:2.2 L/2.32Qts
Inspection of External Oil Pipe
Check external oil pipe for leakage or damage.
Leakage or Damage:
Replace
External Oil Pipe
Inspection of cylinder pressure
Check cylinder pressure is necessary.
Cylinder Pressure: 1000kpa/145Psi
1
A lower cylinder pressure may be caused by:
-Excessive wear of cylinder;
-Wear of piston or piston ring;
-Piston ring stuck in groove;
-Valves not seating;
-Damaged cylinder gasket or other defects.
NOTE: When cylinder pressure too low, check
the above items.
Testing Cylinder Pressure
2
NOTE: Before testing of cylinder pressure, make sure
that cylinder head bolts are tightened to the specified
torque and valve clearance has been properly adjusted.
-Warm up the engine before testing;
-Make sure battery is fully charged;
-Remove spark plug 1;
-Install cylinder pressure gauge 2 in spark plug hole
and tighten nut;
-Keep throttle full open;
-Press start button crank the engine a few seconds.
Record the maximum reading of cylinder pressure.
Tools: Cylinder Pressure Gauge
Adaptor
3.Checks & Adjustment
Inspection of Oil Pressure
Oil Pressure: 18.5-25Psi at 3000 Rpm;
Lower or higher oil pressure may be caused by:
Oil pressure is too low
-Clogged oil filter;
-Leakage from oil passage;
-Damaged O-ring;
-Oil pump failure;
-Combination of above items;
Oil pressure is too high
-Oil viscosity is too high;
-Clogged oil passage;
-Combination of above items;
Testing Oil Pressure
-Remove bolt 1;
-Connect tachometer 2 with ignition coil
-Install oil pressure gauge 3 and joint seat to main oil
gallery.
-Warm up engine as per following:
Summer: 10 minutes at 2000Rpm
Winter: 20 minutes at 2000Rpm
After warming up, increase engine speed to 3000Rpm,
and record readings of oil pressure gauge.
1
Connected with Ignition Coil
2
-After testing, apply thread locker to the thread in the
hole of main oil channel. Install bolt and tighten to the
specified torque.
Tighten torque:23N.m
Tools:Oil pressure gauge
Tachometer
3
Inspection of Clutch Engagement and Lockup
Connected with Ignition Coil
CF196-S engine is equipped with a centrifugal type
automatic clutch.
Before checking the initial engagement and clutch
lock-up two inspection checks must be performed to
thoroughly check the operation of the drive train.
Initial Engagement Inspection
-Connect tachometer to ignition coil
-Start engine
-Shift gear lever to “High” position
-Slowly increase throttle and note down the engine
speed Rpm when the vehicle starts to move forward.
Engagement speed:1800Rpm-2400Rpm
If the engagement speed is out of the above range,
check the following:
-Clutch shoes.
-Clutch shoe wheel.
-Primary and secondary sheave.
Refer to Chapter 12 for inspection of clutch.
Clutch Lock-up Inspection
-Connect the tachometer to ignition coil;
-Start the engine;
-Shift gear lever to ”High” position;
-Apply front and rear brakes as firmly as possible;
-Fully open the throttle for a brief period and note the
maximum engine speed obtained during the test cycle.
Lock-up Speed: 3300Rpm-3900Rpm
WARNING:
Do not apply full power for more than 5 seconds or
damage to clutch or engine may occur.
If the lock-up speed is out of the above range, check
the following:
-Clutch shoes.
-Clutch wheel.
-Primary and secondary sheave.
Refer to Chapter 12 for inspection of clutch.
Tool: Tachometer
4 Cooling and Lubrication System
Overhaul Info
Trouble Shooting
Performance Overhaul
Reservoir Tank
Adding Coolant
Cooling system chart
Radiator and water hose check and clean
Cooling fan check
Water temperature transducer check
Water pump
Water pump check
Water pump assembly and installation
Lubrication system chart
Engine Coolant
Overhaul Info
Caution:
If the radiator cap is opened when the coolant temperature is above 100
,the pressure of coolant
temperature will go down and get boiled rapidly. The steam jet may cause danger and injury. Cover the cap
with a piece of cloth after the coolant temperature goes down and open the cap.
Inspection of coolant should be done after the coolant is fully cooled.
Coolant is poisonous. Do not drink or splash it to skin,eye or cloth.
-If coolant splashes in eyes, throughly wash your eyes with water and consult a docter.
-If coolant splashes on your clothes, quickly wash it away with water and then with soap and water.
-If coolant is swallowed, induce voimting immediately and see a physician.
-Store the coolant properly and keep it away from reach of the children.
Check radiator fins for mud block and/or damage. Correct the bent fins. Clean off the mud with water and
compressed air. Replace with a new one, if the damaged fin area reached 20%
The overhauling of the water pump can done without removing the engine.
Coolant filling is carried through reservoir tank. Do not open the radiator cap except when disassembling
the cooling system for filling or drainage of coolant.
Don’t stain the painting parts with coolant. In case of any coolant stains, flush with water immediately.
After disassembly of the cooling system, check the joints for leakage with a radiator cap tester(available in
the market).
Refer to Chapter 10 for overhauling of temperature transducer.
Inspection standard
Item
Standard
Coolant capacity
Full capacity
Reservior tank
Standard density
Opening pressure of radiator cap
Thermostat
Valve open temperature
Full open lift
Tightening torque:
Drainage bolt,water pump:
Water pump impeller:
8N
1140ml/38ounces
300ml/10ounces
50
108kpa(1.1kgf
71 3 159.8
15.66Psi
under 95 ,3.5£-4.5mm
m 0.8kgfm
10N m(1.0kgf
m)
4-1
Trouble Shooting
Water Temperature Rises Too Fast
Improper radiator cap.
Air in the cooling system.
Malfunction of water pump.
Malfunction of thermostat thermostat is not open).
Clogged of radiator pipe of cooling pipe.
Damaged or clogged radiator fins.
Coolant is not enough.
Faulty or malfunction of fan motor.
No Rise or Slow Rise of Water Temperature
Malfunction of thermostat(thermostat isn’t closed).
Faulty circuit of water temperature display.
Water Leakage
Poor water seal.
O-rings are aged, damaged or improperly sealed.
Washers are aged, damaged or improperly sealed.
Improper installation of pipes.
Pipes are aged, damaged or improperly sealed.
4-2
4 Cooling and Lubrication System
Performance Overhaul
Inspection of coolant density
Caution:
Be sure to open the radiator cap after coolant is cooled.
Remove:
Front top cover
Radiator cap(counter clockwise)
Check with a densimeter if the density of coolant fits
the temperature of using place;
Radiator Cap
Check coolant for stains
Inspection of the radiator cap
Caution
Be sure to open the radiator cap after coolant is cooled
Remove:
-Front top cover
-Radiator cap
Densimeter
CAUTION:
Apply water on the sealing surface of radiator cap,
when attaching the tester to the radiator cap
Refill Port
Apply the specified pressure(radiator cap opening
pressure) for 6 seconds and make sure there is no
pressure drop.
Radiator Cap Tester
Opening pressure of radiator cap:
108kPa(1.1 kgf
Radiator Cap
4-3
Pressure testing of cooling system
Apply the specified pressure(radiator cap opening
pressure) for 6 seconds and make sure that there is
drop in pressure
CAUTION:
Do not apply pressure over the specified pressure
[108kPa(1.1 kgf/cm2)]/15.66Psi,or the cooling system
may be damaged.
In case there is any pressure leakage,check the pipe,
joint parts,joints of water pump and drainage
Radiator Cap
Replacing Coolant,Air Discharge
Preparation of coolant
CAUTION:
Coolant is poisonous,DO NOT drink or splash it to
skin,eyes and clothes
-If coolant splashed in your eyes,throughly wash your
eyes with water and consult a doctor
-If coolant splashed on your clothes,quickly wash it
away with water then with soap and water
-If coolant is swallowed,induce vomit immediately and
see a physician
-Store the coolant properly and keep it away from reach
of children
Densimeter
Undiluted
Antifreeze
Coolant
CAUTION:
Mix the anti-freeze(undiluted) with soft
water according to the temperature 5
lower than the actual lowest temperature in the operation area.
Coolant should be made from undiluted anti-freeze
with soft water.
Standard density of coolant: 50%
Recommended coolant: CFMOTO coolant
(Direct application without having to be
diluted)
Drainage of Coolant
Remove the Radiator Cap
CAUTION:
Open the radiator cap after the coolant
is cooled down.
Remove:
-Front top cover( 2-8)
-Radiator Cap( 4-3)
4-4
Soft
Water
Radiator Cap
4 Cooling and Lubrication System
Remove Drain Bolt
Remove drain bolt, seal gasket from water
pump, drain coolant.
After drainage, assemble new seal gasket
and drain bolt and tighten.
Drain Bolt
Reservoir Tank
Remove:
-Seat
-Left Side Cover
-Two bolts of reservoir tank
-Water hoses of reservoir tank
Reservoir Tank
Remove reservoir tank
Drain coolant from reservoir tank
Wash clean the reservoir tank
Install:
-reservoir tank
-water hoses of reservoir tank
Bolt
4-5
Adding Coolant
Add coolant through filling port
Start the engine and discharge air from cooling
system. Check from filling port that air is fully
discharge from cooling system and install the
radiator cap
Remove reservoir tank cap and add coolant till
the upper limit
Refill Port
Caution:
Check coolant level when the vehicle is on
an level ground
Discharge
Discharge the air from cooling system according to the following steps:
1.Remove drain bolt
and install it.
Upper Limit
,discharge air
2.Start the engine and run it several minutes at
idle speed.
3.Quickly increase throttle 3~4 times to discharge air from cooling system.
4.Add coolant till filling port.
5.Repeat step 2&3 till no more coolant can be
refilled.
6.Check coolant level in reservoir tank and refill
till upper limit,install reservoir tank cap.
4-6
Lower Limit
4 Cooling and Lubrication System
Cooling System
16
12
1.Water Inlet Hose 2.LH Crankcase 3.LH Sidecover 4.Water Pump
2.Water Pipe 6.Cylinder Body 7.Cylinder Head Cover
8.Water Temp Sensor 9.Thermostat Housing 10.Thermostat
11.Water Outlet Hose 12.Radiator 13.Fan Motor 14.Thermoswitch
15.Reservoir Tank 16.Radiator Cap
15
9 10
11
8
7
6
14
5
13
1
4
2
3
4-7
Anti-Freeze Density Freezing Point
zUse high quality ethylene glycol base antifreeze and
mixed with distilled water.Never mix alcohol base antifreeze and different brands of antifreeze
zThe ratio of antifreeze should not be more than 60%
or less than 50%
zDo not use anti-leak additive
zRemove radiator cap 1 and connect tester 2 filler
55%
-40
60%
-55
0
-10
-20
-30
-40
-50
-60
Density 0 20 40 60 80 100
X100Pa
150
140
1.5
130
0.9
120
0.5
110
0
100
0
Inspection of Cooling Circuit
-30
-70
Boiling Point
WARNING:
zDO NOT open radiator cap when the engine is still
hot.Or you may be injured by scalding fluid or steam;
zCoolant is harmful.DO NOT swallow or stain your
skin or eyes with coolant.In case of accidental swallow or stain,flush with plenty of water and consult the
doctor immediately;
zKeep coolant away from reach of children
50%
10
20
30
40
50
Density
1
WARNING:
DOT NOT open the radiator when the engine is still
hot
zGive a pressure of 105kPa/15Psi and check if the
cooling system can hold this pressure for 10 seconds.
zIf the pressure drops during 10 seconds,it indicates
that there is leaakage with the cooling system.In this
case,check the complete system and replace the leaking parts or components.
2
WARNING:
zWhen removing the radiator cap tester,put a rag on
the filler to prevent splash of coolant.
zDO NOT allow a pressure to exceed the radiator
cap release pressure.
4-8
60
Gauge Pressure
The cooling used in cooling system is mixture f 50%
distilled water and 50% ethylene glycol antifreeze. This
50:50 mixture provides the optimized corrosion resistance and fine heat protection.The coolant will protect
the cooling system from freezing at temperature above
-30 ,the mixing ratio of coolant should be increased
to 55% or 60% according to the figure on the right.
Freezing Point
Engine Coolant
4 Cooling and Lubrication System
Inspection and Cleaning of Radiator and
Water Hoses
Radiator Cap
2
1
zRemove radiator cap
zInstall radiator cap to cap tester
zSlowly increase pressure to 108kPa and check if
the cap hold the pressure for at least 10 seconds.
zIf the cap can not meet the pressure requirement,
repalce it.
Radiator Cap Valve Opening Pressure:
Standard:108kPa/15.66Psi
Tool:Radiator Cap Tester
Radiator Inspection and Cleaning
zRemove dirt or trash from radiator with compressed
air.
zCorrect the radiator fins with a small screwdriver.
Radiator Hose Inspection
zCheck radiator hoses leakage or damage.If the hoses
are leakaged and damaged,replace them.
zCheck tightening of clamps.Replace the clamps if
necessary.
zAfter inspection and cleaning of radiator and hoses,
check coolant level.Fill coolant if necessary.
4-9
Inspection of Fan Motor
zRemove fan motor from radiator.
zTurn the vanes and check if they can turn smoothly.
zCheck fan motor.Make sure that the battery applies
12 volts to the motor and the motor will run at full
speed while the ammeter will indicate the ampere not
more than 5A.
If the motor does not work or the ampere exceeds the
limit,replace the motor
zInstallation:Apply a little thread locker to the bolts
and tighten to the specified torque.
1.Radiator 2.Radiator Cap 3.Fan Motor
4.Mounting Bolt 5.Fan Motor 6.Thermoswitch
2
1
3
Fan Motor Bolt Tightening Torque:10N.m
5
Inspection of Thermoswitch
zRemove thermoswitch.
zCheck the thermoswitch for closing or opening by
testing it at the bench as illustrated. Connect the
thermoswitch 1 to the circuit tester,place it in a vessel with engine oil. Place the vessel above a stove.
zHeat the oil to raise the temperature slowly and take
the reading from thermostat 2 when the thermoswitch
closes and opens.
Fan Motor Amperometer
Tool:ammeter
Thermoswitch Operating Temperature:
tandard:(OFF-ON):Approx.
(ON-OFF):Approx.
Battery
NOTE:
zAvoid sharp impact on thermoswitch.
zAvoid contact of thermoswitch with thermometer or
vessel
zInstallation:Use a new O-ring 3 and tighten the
thermoswitch to the specified torque:
Thermoswitch Tightening Tirque:17N.m
zCheck coolant level after installation of thermoswitch.
2
1
Engine Oil
Fill coolant if necessary.
3
4-10
4
4 Cooling and Lubrication System
Inspection of Water Temperature Sensor
zPlcae a rag under water temperature sensor 1 and
remove it from cyclinder head.
zCheck the resistance of water temperature sensor
as illustrated on theright. Connect the temperature
sensor to the circuit tester,place it in a vessel with
engine oil.Place the vessel above a stove.
Tool: ohmmeter, thermometer
zHeat the oil to raise the temperature slowly and take
the reading from ohmmeter 4 and thermometer 3.
Re sistance
B
Tempera ture
Tem perat ure
(Ω)
A 、 C
4
Water
3
50
80
100
154±
16
52±4
27±3
(℃)
Re sista nce
a nd
1
Res ista nce
and
2
Water
Tempera ture
-
Tem perat ure
(℃)
0
1
Re sista nce 71(kΩ)
1
94
80
25
1.8252.155
0.3030.325
110
Engine Oil
0.13830.1451
zInstallation:Apply a little thread locker and install it
to the cylinder head by tightening to the specified
torque.
Water Temperature Sensor Tightening Torque:
10N.m
Thread Locker
NOTE:
zAvoid sharp impact on terperature sensor.
zAvoid contact of temperature sensor with thermometer or vessel.
zAfter installation,check the coolant level.Fill coolant
if necessary.
Inspection of Thermostat
zRemove thermostat case.
zRemove thermostat.
4-11
zCheck thermostat pellet for cracks.If necessary, re-
1
place it.
zTest the thermostat according to the following steps:
2
Pass a string between thermostat flange as illustrated on the right.
1.Thermostat
2.String
Immerse the thermostat in a beaker with water.
Make sure that the thermostat is in the suspended
position without contact to the vessel.Heat the water
by placing the beaker above a stove and observe the
temperature rise on a thermometer
4
Water
Take the temperature reading from thermometer
when the thermostat valve opens
Thermostat Valve Opening Temperature:
Tool:Thermometer
Keep heating the water to raise the water
temperature.When the water temperature reaches the
specified valve, the thermostat valve should have been
lifted by 3.5-4.5mm
Lift standard of thermostat valve:
water temperature 95
lift standard is 3.5-4.
5mm
3
3.Stove 4.Thermostat
If thermotat valve opening temperature or thermostat velve lift does not reach the standards,replace it.
zInatall thermostat:Reverse the removal procedure for
Apply Coolant
installation
Apply coolant to the rubber seal of thermostat
Install thermostat case.Tighten to the specified
torque:
Tightening Torques:10N.m
Water Pump
Removal and Disassembly
zRemove engine left side cover
zDrain coolant
NOTE:Before draining coolant, check water pump for
oil or coolant leakage. In case of oil leakage, check
the water pump oil seal, O-ring. In case of coolant
leakage, check the water seal
4-12
Left Side Cover
4 Cooling and Lubrication System
zRemove clamps and water hoses.
zRemove bolts and remove water pump.
o-ring
zRemove O-ring.
NOTE:Do not reuse the O-ring.
Overflow Tube
zRemove the overflow tube.
z Remove water pump cover screws,water
pump cover and gasket.
zRemove ring and impeller
2
zRemove seal ring 1 and rubber seal 2 .
1
4-13
zRemove mechanical seal with special tool.
Mechanical Seal
NOTE:The mechanical seal does not need to be
moved,if there is no abnormal condition.
NOTE:Do not reuse a removed mechanicalseal.
zPut a rag on the water pump body.
zReomve oil seal.
NOTE:The oil seal does not need to be removed,if
there is no abnormal condition.
Oil Seal
NOTE:Do not reuse a removed oil seal.
zRemove bearing with special tool.
NOTE:The bearing does not need to be removed,if
there is no abnormal noise.
NOTE:Do not reuse a removed bearing.
Inspection of Water Pump
Bearing
zCheck the bearing clearance by hand,while it is still
in the water pump body.
zTurn inner race of bearing to check for abnormal
noise and smooth rotation.
zReplace the bearing,if there is abnormal condition.
Mechanical Seal
zCheck mechanical seal for damage,pay attention
to the seal face.
zIn case of leakage or damage,replace the mechanical seal. If nesessary,also replace the seal ring.
4-14
Bearing
4 Cooling and Lubrication System
Oil Seal
zCheck oil seal for damaged. Pay attention to the oil
seal lip.
zIn case of damage or leakage, replace the oil seal
Water Pump Body
zChecl the mating mace of water pump body with
bearing and mechanical seal.If damage,replace it.
Water Pump Impeller
zCheck the impeller and shaft for damage.
zIf the impeller or shaft are damaged,replace a new
part.
Assembly and Installation of Water Pump
zInstall oil seal with special too.
Tool:Oil Seal Installer
Tool
NOTE:The stamped mark on the oil seal faces outside.
zApply a little grease to the oil seal lip.
Apply Grease
4-15
zInstall mechanical seal with a suitable socket wrench.
NOTE:Apply sealant to side ”A” of mechanical seal.
A
zInstall bearing with special tool.
Tool:Bearing Installer
NOTE:The stamped mark on the bearing faces outside.
Tool
zInstall seal ring to impeller.
zClean off the oil and grease from mechanical seal
and install into the impeller.
NOTE: ”A” side of mechanical seal faces impeller
A
zApply grease to impeller shaft.
zInstall impeller shaft to water pump body.
Apply Grease
4-16
4 Cooling and Lubrication System
zInstall ring to water pump shaft.
zInstall new gasket to water pump body.
zInstall water pump cover and tighten the bolts and
bleed bolt.
Water Pump Cover Bolts Tightening Torque:6N.
m
zCheck impeller for smooth turning.
zInstall the new O-ring.
NOTE:
zUse the new O-ring to preventleakage.
zApply grease to O-ring.
O-ring
zInstall the overflow tubes.
Overflow Tube
4-17
zInstall water pump and tighten the bolts to the specified torque.
Water pump bolts tightening torque:
10N.m
NOTE:Set the water pump shaft slot end ”B” to oil
pump shaft flat side ”A”.
B
zConnect water hoses.
zAdd coolant.
zInstall left side cover.
4-18
Left Side Cover
4 Cooling and Lubrication System
Illustration of CF188 Engine Lubrication System
1.Oil Drain Bolt
2.Washer,Oil Drain Bolt
3.Oil Pump
4.Oil Bypass Valve
5.External Oil Pipe
6.Oil Filter
7.Clutch
8.Crankshaft
9.Cylinder Body
10.Piston
11.Camshaft
12.One-way Clutch
13.Oil Dip Rod
11
10
9
12
8
7
13
4
3
5
1
6
2
4-19
Add oil to the engine parts(piston,cylinder body,camshaft and so on) which run at high speed
Engine lubrication should be special oil. Engine oil is
not only used as lubrication, but also used to wash,
rustproof,seal and cool.
Inspection of Lubrication system
Inspection of engine oil pump and limit pressure valve
4-20
5 Removal and Installation of Engine,Drive Train and Gearshift Unit
Overhaul Info.................................................5-1
Removal and Installation of Front and Rear Axle... 5-5
Engine Removal and Installation......................5-2
Removal and Installation of Gearshift Unit............5-7
Overhaul Info
Operation Cautions
Securely support the ATV with bracket when removing or installing engine.Take care not to damage frame,
engine body,bolts and cables
Wrap the frame to avoid anyy possible damage when removing or installing the engine.
Following operation doesn’t require removal of engine from the vehicle:
Oil pump
Throttle body, air filter
Cylinder head cover, cylinder head, cylinder body, camshaft
CVT system, CVT cover
Gearbox
Right side cover, AC magneto, water pump
Piston, piston ring, piston pin
Following operation require removal of engine from vehicle:
Crankshaft
Tightening Torque:
Engine front upper mounting bolt:
35N
Engine front rear mounting bolt:
40
Bolt, engine front rear mounting bracket:
35 45N m
Bolt, engine front upper mounting bracket:
35
45N m
50N
m
45N m
CFMOTO
Engine Removal
Remove:
—Plastic(-Chapter 2)
—Air Filter(-Engine service chapter)
—Throttle body (-Engine service chapter)
—Clamp
—Water Inlet Hose
Water Inlet Hose
Clamp
Gear Shift Rod
Remove screw.
Remove gearshift rod .
Screw
Remove clamp
Remove water outlet hose
Remove Wiring Sleeve.
Remove connectors of magneto, enriching device lead,
pickup, water temperature transducer, gear sensor as
illustrated on the right.
Water Inlet Hose
Sleeve
Clamp
Connectors
5 Removal and Installation of Engine,Drive Train and Gearshift Unit
Remove spark plug cap from spark plug.
Spark Plug Cap
Remove protection sleeve of starter relay.
Remove Nut.
Disconnect positive cable of starter relay.
Positive Cable,Starter Motor
Remove nut.
Remove negative cable of starter relay.
Negative Cable,Starter Motor
CFMOTO
Remove engine mounting bolts 4 locations.
Bolts
5 Removal and Installation of Engine,Drive Train and Gearshift Unit
Engine Installation
Put engine onto the frame,install the two lower mounting bolts and nuts
Tightening torque:
Engine lower hanger bolt:50-60N
m
Install:
—Water outlet and inlet hoses to engine with proper
clamps.
—Positive and negative starting wires to engine.
—Connect all the connectors.
—Spark plug cap.
—Gearshift rod to engine.
—Air filter, throttle body and removed parts.
Removal and Installation of Front and Rear Axle
Support the vehicle with jack,stands, make sure the
vehicle will not fall.
Remove:
Plastic parts for frame( Chapter 2)
Front and rear wheels and arms Chapter 8)
Air filter(Chapter 7)
Carburetor(Chapter 7)
Engine
Rear brake Caliper
Chapter 7
6
5
4
3
5
7
2
1
3 9
8
10
9
7
11
5
1
1
12
14
13
1.Nut 2.Bolt1 3.bOLT2 4.Front Diff 5.Bolt3 6.Front Drive Shaft 7.Clamp
8.Breather Hose 9.Bolt4 10.Rear Gearcase 11.Breather Hose,Rear Gearcase
12.Rear Brake Disc 13.Bolt5 14.Rear Drive Shaft
CFMOTO
Front Diff
Remove nut and bolt of front axle from frame.
Front Drive Shaft Bolts
Front Diff
Front Drive Shaft
Bolts
Rear Gearcase
Remove nut and bolt of rear axle from frame.
Parking Brake
Nuts
Rear Gearcase
Rear Drive Shaft
Bolts
5 Removal and Installation of Engine,Drive Train and Gearshift Unit
Remove the 18 bolts for drive shafts and front and rear
axles(Refer to 5,bolt 3)
Remove
Front and rear axles,drive shafts,rear brake disc.
Installation
Reverse the removal procedure for Installation
Tightening torque:
Bolt,front axle:40-50N m
Bolt
Bolt,rear axle:40-50N m
Bolt,front and rear drive shafts 40-50N
m
Gearshift Unit
Remove
left and right side panel
Fuel tank top cover
Front fender
Bolt 1
Gearshift rod
Gear Shift Rod
Gear Shift Unit
Remove the 3 bolts
Remove gearshift unit
Installation:
Reverse the removal procedure for installation
Make sure that gearshift is flexible.
In case of any inflexibility,adjust the gearshift rod
to ensure the gear engagement.
Screw
Bolts
6 Engine Removal, Inspection & Installation
6
Eng ine Removal, Inspection and Installation
△Engine Removal/Installation Orders and the Relative Page Numbers
Disassembly
Item
DES
Inspection /
Maintenance
Assembly
Engine
Water Hose/Pipe
3-2
Periphery
Left Side Cover
3-2
Recoil Starter
3-2
3-49
3-68
Spark Plug
3-2
2-4
3-68
Cylinder Head Cover
3-3
3-14
3-66
2-11
Remarks
3-69
3-69
Tensioner
3-3
3-24
3-67
Engine
Camshaft
3-3
3-21
3-65
Front
Cylinder Head/Tensioner Plate
3-4
3-15/3-23
3-64
Side
Cylinder/Timing Chain Guide
3-4
3-24/3-23
3-64
Piston
3-5
3-25
3-62
Starting Motor
3-5
6-3
3-62
Oil Filter
3-6
2-9
3-62
Sector Gear
3-6
Engine
Water Pump
3-7
5-7
3-61
Left side
Sheave Drum
3-7
3-48
3-60
3-7
3-48
3-60
Magneto Rotor
3-7
3-47
3-60
Starting Driven Gear
3-8
3-47
3-59
Starting Dual Gear/Idle Gear
3-8
3-48
3-59
Oil Pump Sprocket and Chain
3-8
CVT Cover
3-9
3-51
3-58
Drive Belt
3-9
3-36
3-57
3-9
3-30
3-57
CVT Housing/Clutch Outer Face
3 -10
3-51
3-57
Clutch
3 -10
3-28
3-56
Timing Chain
3 -10
3-23
3-56
Gear Position Bolt
3-11
Right Crankcase
3-11
3-52
3-56
Front Output Shaft Components
3-11
3-43
3-55
Driven Bevel Gear Components
3-11
3-43
3-55
Shift Cam
3 -12
3-40
3-55
Guide Bar, Fork
3 -12
3-39
3-55
Drive Bevel Gear Components
3 -12
3-42
3-55
Main Transmission Shaft
3 -12
3-38
3-54
Transmission Counter Shaft
3 -12
3-38
3-54
Balancer Shaft
3 -12
3-46
3-54
Crankshaft
3 -13
3-27
3-54
Oil Pump, Pressure-limiting Valve
3 -13
3-41
3-53
3-61
Left Crankcase Cover/ Magneto
Stator
Primary
Engine
right side
Engine
Center
Sheave/Secondary
Sheave
Left Crankcase
3-59
3-56
3-52
Notes: Arrowhead direction is for engine removal orders. Reverse the direction for assembly and installation.
CFMOTO
Engine Removal
Preparation before engine removal
Prepare a proper tray used for load of components.
7
Prepare necessary removal and assembly tools.
8
Drain engine oil
1
Drain coolant (3-15).
3
Engine Periphery
Water Hose/Pipe
2
5
Remove water hose clamp 1,2,Remove water hose
4
3.
Remove screw 4 and water hose 5.
Left Side Cover
Remove 6 bolts(M6 20)of left side cover
8
Remove left side cover 6.
Recoil Starter
Remove 4 bolts(M6 12)of recoil starter
Remove recoil starter7.
Inspection Plug
Remove inspection plug 8 with screwdriver.
9
Engine Front Side
Spark Plug
Remove spark plug 9 with special wrench.
Tool: Spark Plug Wrench
Turn crankshaft, align T.D.C. line A on magneto rotor
with mark B of left crankcase
(piston on T.D.C).
B
A
6 Engine Removal, Inspection & Installation
Cylinder Head Cover
Remove valve adjusting covers.
Remove12 bolts of cylinder head cover.
Remove cylinder head cover.
Timing Chain Tensioner
Remove screw plug , insert a flat screwdriver
intoslot of timing chain tensioner adjuster , turn
itclockwise to lock tensioner spring.
Remove tensioner bolts.
Remove tensioner and gasket.
Camshaft
Loosen timing sprocket bolt.
Remove timing sprocket bolt and lock.
CFMOTO
Remove C-ring 1.
1
Remove timing sprocket from camshaft, remove
camshaft.
NOTE: Take care not to drop spacer, bolt, bolt
lock and C-ring into crankcase.
Remove cam chain guide.
Cylinder Head
Remove cylinder head bolts.
Remove cylinder head bolts diagonally.
Remove cylinder head.
NOTE: Take care not to drop dowel pin into crank-
case
Cylinder
Remove dowel pin and cylinder head gasket.
Remove timing chain guide 1.
8
6 Engine Removal, Inspection & Installation
Remove cylinder bolt.
Remove cylinder.
NOTE:Take care not to drop dowel pin into
crankcase
Remove dowel pin and cylinder gasket.
NOTE:When performing above removal process,be
sure to hook up timing chain to prevent it from falling
into crankcase.
Piston
Remove piston pin circlip 1with long nosed pliers.
NOTE:Put a clean rag under piston so as not to
drop piston pin circlip into crankcase
Remove piston pin 2 and piston 3.
NOTE:
When installing piston, make sure its
identification conforms to that of cylinder.
When removing piston pin, clean off burrs of
piston pin hole and groove. If it is difficult to
remove the piston, DO NOT hammer, use a
1
3
2
special remover 4
Tool: Piston Pin Remover
Engine Left Side
4
Starting Motor
Remove 2 bolts of starting motor.
Remove starting motor.
Starter Motor
CFMOTO
Oil Filter
Remove oil filter with special tools.
Tool: Oil filter Remover
Special Tool
Sector Gear
Remove bolt 1 of gearshift rocker arm.
Remove gasket 2 and gearshift rocker arm 3.
3
2
1
Remove bolt of sector gear housing cover.
Cover,Gear Shift
Sector Gear
Remove wire clip and sector gear housing cover.
Remove dowel pin and gasket.
Remove drive sector gear 4.
4
Remove bolt 5 of driven sector gear.
5
Remove washer 6 and driven sector 7.
7
6
6 Engine Removal, Inspection & Installation
Water Pump
Remove water pump screws.
Remove water pump.
Sheave Drum
Remove the sheave drum by using a
suitable bar.
Remove washer and sheave drum.
Left Crankcase Cover
Remove bolts.
Remove left crankcase cover.
Remove dowel pin and gasket.
Magneto Rotor
Install attachment 1 to crankshaft end.
1
Install special tool to rotor thread;
Remove rotor and woodruff key.
Tool
Tool: Rotor Remover
CFMOTO
Starting Motor Gear
Remove driven gear 1 and needle bearing.
4
Remove dual gear and shaft 3.
Remove idle gear and shaft 4.
Oil Pump Sprocket and Chain
Remove drive sprocket nut 5.
Remove C-ring 6.
1
2
Remove spacer 2.
5
Remove oil pump drive and driven sprockets and
chain.
6
3
6 Engine Removal, Inspection & Installation
Engine Right Side
CVT Cover
Remove bolts from CVT cover.
Remove CVT cover.
Remove gasket and dowel pin.
CVT(Continuously Variable Transmission)
Remove primary sheave nut with special tool.
Remove primary sliding sheave.
Tool
Remove secondary sheave nut with special tools.
Tool
Remove secondary sheave.
1
Remove drive belt.
Tool: Sheave Holder
Remove primary fixed sheave 1.
Remove bolts for air guide plate,Remove air guide
plate.
CFMOTO
1
CVT Case
Remove bolts #1 from CVT case.
Remove nuts #2 from CVT case.
2
Remove outer clutch face and CVT case.
Remove dowel pin, front and rear gasket.
Clutch
Remove clutch shoe fixing nut with special tool.
Remove clutch shoe.
NOTE:The clutch shoe nut has left-hand threads
Timing Chain
Remove timing chain.
Tool
Timing Chain
6 Engine Removal, Inspection & Installation
Engine Center
Gear position bolt
1
Remove gear position bolt 1.
Remove spring and steel ball.
Right Crankcase
Remove left crankcase bolts.
Remove right crankcase bolts.
Separate right crankcase with special tool.
CAUTION:
The Crankcase separator plate should be
parallel with the end face of crankcase.
Tool
Crankshaft should remain in the left
crankcase half.
Tool: Crankcase separator
Driven Bevel Gear, Front Output Shaft
Remove bevel gear cover bolt.
Remove driven bevel gear 3.
Remove front output shaft nut 4.
3
4
CFMOTO
4
Remove Oil seal 1,Bearing limit nut 2(left roll).
Remove Front Output Shaft 4 .
3
1
2
6
Shift Cam, Fork/Shaft
Remove Shift Cam
Fork /Shaft
Drive Bevel Gear
Remove left crankcase from driven bevel gear.
Drive Shaft, Drive Shaft
Remove drive shaft 7and driven shaft 8.
8
Balancer Shaft
Remove balancer shaft.
Balance Shaft
7
5
6 Engine Removal, Inspection & Installation
Crankshaft
Separate crankshaft from left crankcase with
special tool.
Tool: Crankshaft Separator
1
Oil pump, Relief Valve
Remove oil pump and relief valve.
CFMOTO
Engine Components Inspection
Cylinder Head Cover
Disassembly
CAUTION:Each removed part should be identi
fied to its location, and the parts should be laid out
in groups designated as Exhaust”, “Intake”, so
that each will be restored to the original location
during assembly.
Remove rocker arm shaft bolts A.
B
A
Remove rocker arm shaft by using M6 bolts B.
Cylinder Head Cover Distortion
Clean off sealant from the fitting surface of cylinder
head cover, place cylinder head cover on a surface
plate and measure distortion with a thickness gauge.
Cylinder head Cover Distortion
Limit: 0.05mm
Tool: Thickness Gauge
Distortion out of range: --Replace
NOTE:Cylinder head cover and cylinder head
should be replaced together.
Rocker Arm Shaft
Measure out diameter of rocker arm shaft with a
micrometer.
Rocker Arm Shaft O.D.: (IN, EX)
Limit: 11.973~11.984mm
Tool: Micrometer (0~25mm)
A
6 Engine Removal, Inspection & Installation
Rocker Arm
When checking the rocker arm, check the inner
diameter of the valve rocker arm and wear of the
camshaft contact surface.
1
Rocker Arm I.D. : .000~12.018mm
2
Tool: Dial Calipers
Assembly
NOTE:Intake rocker arm shaft A has oil holes.
A
Apply engine oil to rocker arms and shafts.
Install rocker arms and tighten rocker arm shaft to
the specified torque.
Rocker Arm Shaft Bolt: 28N.m
Aplly Engine Oil
Aplly Engine Oil
Cylinder Head
Disassembly
Remove intake manifold.
Remove water temperature sensor 1and
thermostat cover 2.
1
2
CFMOTO
Remove thermostat.
Compress the valve spring and remove valve retainers with tweezers.
Tools: Valve Spring Compressor
Tweezers
Remove valve spring upper seat and valve spring.
Remove valve from the other side.
Remove valve stem seal ring and valve lower seat.
Tool
6 Engine Removal, Inspection & Installation
Cylinder Head Distortion
Clean off carbon deposit from combustion chamber.
Check the gasket surface of the cylinder head for
distortion with a straightedge and thickness gauge.
Take clearance readings from several places. If any
clearance reading is out of the service limit, replace
with a new cylinder head.
Cylinder Head Distortion Service Limit: 0.05mm
Tool: Thickness Gauge
Valve Seat Width
Coat the valve seat with color uniformly. Fit the
valve and tap the coated seat with the valve face
in a rotating manner. To get a clear impression of
the seating contact, use a valve lapper to hold the
valve head.
The ring-like dye impression on the valve face
should be continuous, without any break. The
width of the dye ring, which is the visualized seat
width,should be within the following range:
a
Valve Seat Width: 0.9-1.1mm
Tool: Valve Lapper
Valve Stem and Valve Guid
Lift the valve about 10mm from valve seat. Check
the valve stem deflection in the directions of X
and Y perpendicular to each other, with a dial
gauge. If the deflection measured is out of the
limit, replace either the valve or the valve guide. (If
the valve stem is worn to the limit and the
clearance is found to be in excess of the limit,
replace the valve. If the valve stem is within the
limit, replace the valve guide.Double check the
clearance after replacing the valve stem or the
guide).
Valve Stem Deflection (IN & EX): 0.35mm
Tool: Micrometer
Magnetic Stand
b
CFMOTO
Valve Stem O.D
Measure valve stem O.D with a micrometer
Service Limit:
IN: 4.975-4.990mm
EX: 4.955-4.970mm
Tool: Micrometer (0-25mm)
Valve Stem Run-out
Support valve stem with V block as illustrated on
the right. Check the run-out with a dial gauge.
Service Limit: 0.05mm
Tool: Magnetism Stand
Dial Gauge (1/100)
V block
Valve Head Radial Run-out
Measure the valve head radial run-out as illustrated
on the right.
Valve head Radial Run-out out of range:--Replace
Service Limit: 0.03mm
Tool: Dial Gauge (1/100)
Magnetism Stand
V Block
Valve Face Wear
Check each valve face for wear or damage.
Replace valve with a new one if it is found to have
abnormal wear. Measure valve head thickness T.
T
Valve head thickness T out of range: ---Replace
Service Limit: 0.5mm
Tool: Vernier Caliper
Valve Stem End
A
Check valve stem end for pitting or wear. In case of
any pitting or wear, resurface the valve stem end. If
the length T is less than service limit, replace valve
with a new one.
Valve Stem End Length
Service Limit: 2.1mm
Tool: Vernier Caliper
6 Engine Removal, Inspection & Installation
Valve Spring
Valve Spring keeps valve and valve seat tight.
Weakened spring results in reduced engine power
output and chattering noise from valve mechanism.
Measure the spring free length.
Spring free length out of range: --Replace
Service Limit: 38.8mm
Tool: Vernier Caliper.
a
182N-210N
Measure the force to compress the spring to the
specified length.
Valve spring tension out of range: ---Replace
Service Limit: (IN/EX)
182N-210N/31.5mm
Tool: Spring Scale.
Measure valve spring incline.
Spring incline out of range:--Replace
31.55mm
D
Valve Spring Incline Limit: 2.5o/1.7mm
Assembly of Cylinder Head
Moly Oil
Install each valve spring seat;
Apply moly oil to valve stem seal and fit into
position.
Material: Moly oil
NOTE: Do not reuse the valve stem seal.
Insert the valves, with stems coated with moly oil
all around.
NOTE: When inserting the valve, be careful not to
damage the lip of the stem seal.
Moly Oil
CFMOTO
Install valve spring with small-pitch end (b) facing
cylinder head. Big-pitch end (a) is marked.
a
b
Put on the valve spring retainer. Use the valve
spring compressor to press down the spring. Fit
the two cotter halves to the stem end and release
compressor to allow the cotter to wedge in
between seat and stem. Make sure that the
rounded lip of the cotter fits into the groove
in the stem end.
Tool: Valve Spring Compressor
3
2
1
Tool
Tweezers
NOTE: Knock the valve end with rubber
hammer. Make sure valve cotter is fit into groove.
Check the sealing effectiveness of cylinder head.
Dip clean solution into valve IN/EX 1 and check
for any leakage of valve seat 2 after a few
minutes.
1
2
6 Engine Removal, Inspection & Installation
Install thermostat.
Install thermostat cover.
Install water temperature sensor, apply thread
locker to the thread part, tighten it to the
specified torque.
Water temperature sensor
Tightening torque: 10 N.m
Apply Thread
Water Temp Sensor
Locker
Apply Lubricant
Grease
Install intake pipe, apply lubricant to 0-ring.
Camshaft
Check camshaft for wear and run-out of cams and
journals if the engines produces abnormal noise or
vibration or lacks power output. Any of these symptoms could be caused by wear of camshaft.
NOT E: Do not try to disassemble the camshaft/
automatic decompression assembly. It is not
serviceable.
CFMOTO
Automatic Decompression
Move the automatic decompression weight with
hand and check if it is operating smoothly. If it is
not working smoothly, replace with a new camshaft/
automatic decompression assembly.
Cam Wear
Worn cams can often cause mistimed valve
operation resulting in reduced power output. The
limit ofcam wear is specified for both IN and EX
cams in terms of cam height¡°a¡±Measure with a
micrometer the cam height.
Cam height service limit:
IN: 33.130mm
EX: 33.200mm
Tool: micrometer (25-50mm)
Camshaft Journal Wear
Check whether each journal is worn to the limit by
measuring camshaft journal oil clearance with the
camshaft installed.
Camshaft journal oil clearance:0.15mm
Check according to the following steps:
Clean off materials from cylinder head and cover;
Install camshaft with plastic gauge;
Install cylinder head cover and tighten bolts evenly
and diagonally to the specified torque:
Tightening torque:10N m
Remove cylinder head cover, read the width of the
compressed plastic gauge with envelop scale. The
reading should be taken from the widest part.
Tool: Plastid Gauge
NOTE: Do not turn the camshaft with plastic gauge in
place.
If the camshaft journal oil clearance exceeds the
limit,measure the outer diameter of camshaft;
Replace either cylinder head set or the camshaft if
theclearance is not correct.
a
6 Engine Removal, Inspection & Installation
Camshaft Journal O.D.
Measure camshaft journal O.D. with a micrometer.
If the O.D. is out of range, replace camshaft with a
new one.
Camshaft journal O.D. service limit:
Sprocket end: 22.959 mm-21.980mm
Other end: 17.466mm-17.484mm
Tool: micrometer (0-25mm)
Camshaft Run-out
Measure the run-out with a micrometer. Replace
camshaft is the run-out is out of range.
Service limit: 0.10mm
Timing Sprocket and Chain
Check timing sprocket and chain for wear or
damage.
Replace with new parts if abnormal wear or damage
is found.
Tensioner and Chain Guide
Chain Tensioner
Check contact surface of tensioner and chain guide
for wear and damage.
Replace with news parts if abnormal wear or
damage is found.
Chain Guide
6 Engine Removal,Inspection and Installation
Chain Tensioner
Inspection
Check tensioner for any damage or poor function.
Damage, poor function:—Replace
inspect way of working stability
Insert screw driver 1 into the slotted end of
adjusting
screw, turn it clockwise to loosen the tension and
release the screwdriver.
Check the push rod movement. If the push rod is
stuck or there is a failure with spring mechanism,
replace the chain tensioner with a new one.
Cylinder
Cylinder Distortion
Check the gasket face of cylinder for distortion with
a straightedge and thickness gauge and take
clearance readings at 7 points as illustrated. If the
largest reading at any of the 7 points of the
straightedge is out of the range,replace the
cylinder.
Cylinder Distortion Service Limit: 0.05mm
Tool: Straight edge
Thickness Gauge
Cylinder Bore
Check cylinder wall for scratches, nicks or other
damage. Replace with a new one if any
Measure cylinder bore diameter at three points
of upper, middle and lower.
Standard Cylinder Bore:
196S-B
96.018-96.038mm
Tool: Cylinder Gauge Set
1
Piston
Piston Diameter
Use a micrometer to measure the diameter at the
point 10mm above the piston end, as illustrated on
the right. If the measurement is less that the limit,
replace the piston
Standard:95.960-95.980mm
Limit:95.880mm
Tool:Micrometer (75-100mm)
Calculate the piston to cylinder clearance according
to the abovemeasurement.If the clearance is more than
0.15mm, replace the cylinder or piston, or both.
Piston Ring to Groove Clearance
Use a thickness gauge to measure the side
clearance of topt ring and 2nd ring.
If the clearance exceeds the limit, replace both
piston and piston rings.
Service Limit:
Top ring:0.18mm
2nd ring:
0.15mm
Standard width of piston ring groove
Top ring:1.03-1.05mm
2nd ring:1.22-1.24mm
Oil ring:2.51-2.53mm
Standard thickness of piston ring
Top ring:0.970-0.990mm
2nd ring:
1.170-1.190mm
Tools: Thickness gauge
Micrometer(0-25mm)
10mm
6 Engine Removal,Inspection and Installation
Piston Ring Free End Gap and End Gap
Before installing piston rings, use vernier caliper to
measure the free end gap of each ring, and then fit
ring into the cylinder.
Use thickness gauge to measure each ring end gap,
if any ring has an excess end gap, replace the
piston ring
Piston ring free end gap limit:
Top ring:8.9mm
2nd ring:9.5mm
Piston ring end gap limit:
Top Ring:0.60mm
2nd ring:0.60mm
Tool: Vernier caliper
Thickness gauge
Piston Pin and Pin Bore
Use a bore gauge to measure the inner diameter
of piston pin bore.Use micrometer to measure
outer diameter of piston pin.If out of limit, replace
both piston and piston pin.
Piston pin bore limit: 23.030mm
Use micrometer to measure piston pin outer
diameter at three points
Piston pin outer diameter limit: 22.980mm
Tools: Bore gauge (18-35mm)
Micrometer (0-25mm)
ConnectingRod/Crankshaft
Connecting rod small end I.D.
Use a dial gauge to measure the I.D. of connecting
rod small end. If the measurement exceeds the
limit,replace the connecting rod.
Connecting rod small end I.D. : 23.040mm
Tool: Dial Gauge (18-35mm)
Connecting Rod Deflection
Check the movement of the small end of the rod
and inspect the wear of the small end.
Thismethod is also applicable to check and
inspection of big end
Connecting Rod Deflection: 3.0mm
Tools: Dial Gauge
Magnetic stand
V-block
Connecting Rod Big End Side Clearance
Push the big end to one side, and use thickness
gauge to measure the other side clearance.
If out of limit, replace with a new crankshaft.
Connecting Rod big end side clearance: 1.0mm
Tool: Thickness Gauge
Crankshaft Run-out
Support crankshaft with blocks as illustrated.
Put the dial gauge, slowly turn the crankshaft and
measure run-out with a dial gauge.
If the run-out exceeds the limit, correct or replace
the crankshaft.
Run out limit: 0.08mm
Tools: dial gauge
Magnetic stand
V-block
6 Engine Removal,Inspection and Installation
Clutch Inspection
Check clutch for chipping, scrape, uneven wear or
heat discoloration. At the same time check
depth of the grooves of clutch shoes. If any of the
clutch shoes has no groove, replace the clutch.
NOTE: clutch should be replaced as an
assembly..
a
Clutch Wheel
Check the inner clutch wheel
for scratches,
scuffs or bluediscoloration or unevenwear. If
anydamageis found, replace the clutch wheel with
a newone.
for scratches, scuffs or blue discoloration or
uneven wear. If any damage is found, replace the
clutch wheel with a new one.
Use special tool to remove oil seal
Tool: Oil seal remover
1
Use special tool to assemble oil seal
Tool: Oil seal installer set
Check the turning of bearing.
Abnormal damage: —Replace
Assembly
Apply lubricant grease to oil seal when
assembling.
Oil Seal
Primary and Secondary Sheave
(17)
(16)
(15)
(12)
(13)
(14)
(10)
(11)
(9)
A
(8)
(5)
B
(3)
(6)
(4)
(1)
N
m
A
115
B
C
115
100
(2)
(7)
6 Engine Removal,Inspection and Installation
Primary Sliding Sheave
Disassemble
Remove spacer
Remove Cam 1 roller 2
Roller Inspection
Check each roller and sliding face for wear and
damage.
Wear and damage:—Replace
NOTE: rollers should be replaced as a set.
Oil Seal inspection
Check oil seal lip for wear and damage.
Wearanddamage: —Replace
Remove the oil seal
1
2
Primary Sliding Sheave and Fixed Sheave
Check the drive face for any abnormal conditions
such as damage or stepped wearing.Replace if
necessary.
Tool
Tool
Install oil seal with special tool.
Tool: Bearing install set
Assembly
Reverse the removal procedure of primary sliding
and fixed sheave for installation.
Pay attention to the following:
Apply grease to inner bore and oil seal lip.
NOTE:Wipe off any excessive grease
thoroughly.Take care not to attach any
lubricant grease to contact surface of
drive belt.
Apply lubricant grease
Material: Lubricant grease
Position 8 rollers on the primary sliding sheave
Install 4 dampers
to cam
Install cam to primary sliding sheave.
NOTE: When inserting the spacer, press down the
cam so that the rollers will not come out of position.
Apply lubricant grease
6 Engine Removal,Inspection and Installation
Install Spacer
Secondary Sheave
Disassembly
Use special tool and holder to hold the secondary
sheave. Remove secondary sheave nut with special
tool
CAUTION:Do not remove the ring nut before
attaching theclutch spring compressor.
Tool: Nut Wrench
Sheave Holder
Attach special tool to the secondary sliding sheave
and compress it by turning in the tool handle.
A
B
NOTE:
Make sure that spring end A is inserted into
slot B of the tool handle
Remove ring nut.
Tool: Secondary sliding sheave spring
compressor
NOTE:
Since a high spring force applies to the
secondary sliding sheave, take special
care that the secondary sliding sheave will
not come off abruptly
Slowly loosen tool handle and remove the
special tool.
Tool
Remove spring 1.
1
2
Remove spring seat 2.
Guide Pin&Spacer
Remove guide pin and spacer.
3
Remove secondary sliding sheave 3.
Seal Ring
O-ring and Oil Seal
Check the O-ring and oil seal for wear and
damage.
WearandDamage: —Replace.
Remove Oil Seal.
o-ring
6 Engine Removal,Inspection and Installation
Install oil seal with special tool.
Tool: Bearing install set
Tool
Tool
Use vernier caliper to check the spring free length.
If the length is shorter than the service limit,
replace with a new one.
Service Limit: 145.4mm
Secondary Sliding and Fixed Sheave:
Check drive face for any abnormal condition such
as stepped wear or damage. Replace if
necessary.
Apply lubricant grease
Assembly
Install a new O-ring
Apply lubricant grease
Apply lubricant grease to O-ring, oil seal lip and
guide pin groove.
Material: lubricant grease
Install guide pin and spacer 1.
1
NOTE: To avoid damage to the oil seal lip during
assembly, slide the lip with a 0.1mm steel
sheet as guide.
Install spring seat. Align hole A with hole B.
B
A
Install spring and spring plate. Insert spring end
into the hole.
Compress spring with special tool.
Align the secondary sheave end with spring
plate hole.
Tool
Tool: Secondary sheave spring compressor
Tool
Tighten ring nut temporarily.
Remove the special tool from secondary sheave.
6 Engine Removal,Inspection and Installation
Tighten the ring nut with special tool to
the specified torque.
Ring Nut Tightening Torque:
100N
m
Tool: Ring nut wrench
Sheave holder
Drive belt
Check belt for any greasy substance.
Check contact surface of belt for
any cracks and damage
check belt width with venire caliper
In casse of damage, width out of range,
replace with new one.
Belt width service limit:33.5mm
Tool: vernire caliper
WARNING:If belt surface is stained
with grease or oil,degrease the belt
thoroughly.
Transmission
Disassembly
3
2
1
12
13
4
14
16
11
15
17
10
18
9
8
7
6
5
Item
1
Description
MAINSHAFT. GEAR SH IF T
Qty
Item
1
10
Description
DRIVEN GEAR, HIGH RAN G
DRIVEN GEAR,
Qty
1
2
SH IFT CAM
1
11
3
RIGHTC RANKCASE
1
12
SPRING, SHIFT FORK
1
4
LEFT C RANKCASE
1
13
RIGH T SH IFT FORK
1
DRIVENSEC TORGEAR
1
14
GU ID E BAR
1
1
15
DRIVEN SH AF T
1
5
6
SPR OC KET,
REVER SEGEAR
LOW RANGE
1
7
CHAIN, REVER SEGEAR
1
16
SPRING, SHIFT FORK
1
8
DRIVENOUTPU TGEAR
1
17
LEFT SHIFT FORK
1
9
DRIVE SECTOR GEAR
1
18
SH IF T FORK ASSEMBLY
1
6 Engine Removal,Inspection and Installation
Inspection
Inspect drive bevel gear and sprocket
for stains, scratch or damage, replace if necessary.
Inspect reverse gear chain for damage,
wear,replace if necessary.
Disassemble counter shaft as
illustration.
Inspect bearing surfaces for stains,
damage or wear and also for bearing
gaskets. Replace if necessary.
Check the shift fork clearance with
a thickness gauge in the groove of
its gear.Replace if clearance
exceeds the limit.
Shiftfork to Groove clearance
Standard:0.10-0.30mm
Service Limit: 0.50mm
Measure shift fork groove width with
vernier caliper.
Standard shift fork groove width:
6.05-6.15mm
Measure shift fork thickness with
vernier calipers.
Standard fork thickness:5.80-5.90mm
Check shift fork 1 and 2 for damage
or bend, replace if necessary.
Install shift fork to guide bar and move left
and right.In case of any unsmooth moving,
replace with a new one.
6 Engine Removal,Inspection and Installation
Put the guide bar on a flat place and
roll it. In case of any bend,
replace with a new one.
NOTE:DO NOT attempt to correct
a bent guide bar.
Check shift fork spring for damage,
repalce if necessary.
Check shift cam groove for scratches,
damage.Replace if necessary.
Assembly
Reverse the removal procedure for
assembly. Pay attention to the following.
NOTE:
Use new retainers. Pay attention
to the direction of the retainers.
Fit to the side where the thrust
is as illustrated.
Coat the gears and shafts with
engine oil before assembly.
WARNING:
Do not reuse the retainers.
Thrust
Do not expand of the gap end of new
retainers too wide when assembling.
Make sure that all the retainers are
properly fitted.
Sharp Edge
When assembling the guide bar,
take care not to assemble the
two shift forks and springs in
the opposite direction.
Guide bar; 2 Retainer 12;
3 Left shift fork;
4 Shift fork spring(small);
5 Right shift fork;
6 Shift fork spring(big);
7 Spring seat
7
6
(2)
5
(7)
4
3
2
1
Oil pump
2
Disasseble oil pump as illustrated
3
1 Oil pump housing; 2 Dowel pin;
3 Oil pump shaft;
4 Straight pin;
7
4
5
6
1
5 Inner rotor, oil pump;
6 Outer rotor, oil pump;
7 Oil pumper cover
Check oil pump housing and cover for
cracks and damage. Replace if
necessary.
Measure the top clearance a between
inner and outer rotors and side clearance b
between outer rotor and oil pump housing. If the
clearance exceeds the limit, replace with new one.
b
Top clearance:0.03-0.10mm
Service limit:0.15mm
1
Side clearance:0.03-0.10mm
2
Service limit:0.12mm
3
a
6 Engine Removal,Inspection and Installation
Oil Strainer Inspection
2
Check oil strainer 1and O-ring 2 for damage, replace if necessary;
1
Clean the surface of oil strainer
with engine oil.
Relief Valve
Check the valve body 1,valve2,spring3,0-ring 4 for
damage or wearing. Replace if necessary;
2
Drive Bevel Gear
3
1
4
1
Use a clean rag to protect the drive
bevel gear shaft, clamp it to the pliers;
Loosen drive bevel gear nut 3,
remove the drive bevel gear 4 and
adjust washer 5;
Check the drive bevel gear 4 and
output driven gear 2 for rust,
scratch, wear or damage. Replace if necessary.
Check if the bearing 8 turns
smoothly, replace with a new bearing if
necessary.
1-Drive bevel gear cover 5-Washer
2-Output driven gear
6--Drive bevel gear shaft
3-Drive bevel gear nut
7- Bearing nut
4-Drive bevel gear 8-Bearing
5
4
3
Adjust Washer 5 if any of right
crankcase, drive bevel gear 4, or
drive bevel gear cover 1 is replaced.
Refer to bevel gear adjustment for details;
6
7
Apply engine oil to bearing 8 when
assembling and tighten nut 3 to the
specified torque.
Drive bevel gear nut tightening torque
145N
m
2
1
2
8
Front Output Shaft
Check bearing 7 for smooth turning and
abnormal wear. Check oil seal 5 for damage.
7
5 6
Replace if necessary;
4
Apply lubrication oil to bearing 7 and oil seal 5
lip before assembly;
Apply thread locker to bearing limit nut 6
(left thread) and tighten to the specified torque.
(80N.m)
3
3
1
23
3
3
3
Tighten Nut 1 to the specified torque,
front output shaft nut tightening torque:
15
15
3
10
Driven Bevel Gear
15
9
8
12
13
13
Protect end thread of driven bevel gear with
proper device 2 Fix bevel gear cover 14 and
press out driven bevel gear.
14
15
2
Place a clean rag 1under bevel gear cover.
Remove bearing limit nut 10 with special tool
2 and remove bearing
1
Check driven bevel gear 8 surface for
scratches, wear.Scratch or wear, replace;
Check free turning of bearing 9 and
11. Replace if necessary;
Use new oil seal 16 and O-ring 12
when assembling;
Adjust washer 13 if any of right crankcase,
driven bevel gear 8 or driven bevel gear cover
14 is replaced. Refer to bevel gear ad-justment
for details;
2
1
Apply lubrication oil to bearing 9 and 11 and
oil seal 16, O-ring.Apply thread locker to nut
10 and tighten to the specified torque.(110N.m)
Tool: driven bevel gear nut wrench
Driven bevel gear nut tightening torque:150N.m.
Bevel Gear Washer Adjustment
Adjust washer 1and 2 when replacing
crankcase and/or bevel gear and/or bevel gear
cover.
3
11
97N.m
Remove nut 19, washer 18, coupler 17
and oil seal 16.
18 19
2
1
16
17
6 Engine Removal,Inspection and Installation
Bevel Gear
NOTE:Proper bevel gear engagement
depends on that the gear backlash &
2
1
tooth contact are within the proper range.
2
Bevel Gear Backlash
Install drive and driven gears to the crankcase. Wrap
a (-) screwdriver 3 with a rag 2 and insert it into the
speed sensor hole 1 of left crankcase to fix the drive
bevel gear
3
4
Install special tool 3 and
micrimeter 4
Tool: level gear side clearance
dial gauge micrometer
a=46mm
Turn the driven bevel gear in each
direction and measure the backlash.
NOTE:Measure four points in the
mutual vertical direction.
If the backlash is not within the
specification,adjust the thickness of the driven
bevel gear adjust washer.
Re-check the backlash until the back-lash is
correct.
Bevel gear backlash:0.1-0.2mm
Adjustment:
Backlash
0.1mm
Washer thickness
adjustment
Washer thickness
adjustment
0.1~0.2mm
0.2mm
OK
Increase thickness
a
Tooth Contact Inspection
After adjusting the backlash, check
the tooth contact according to the following
procedures
Remove drive and driven bevelgear shafts
from crankcase;
1
Clean and degrease every tooth of
drive and driven bevel gear
Coat the driven bevel gear with machenist’s
layout dye or paste;
Install drive and driven bevel gear;
Rotate the driven bevel gear several
turns in both directions;
Remove drive and driven bevel gear shafts
and check the coated teeth of the drive bevel
gear;
Contact 1
tooth top
Incorrect
Contact2
Middle
Correct
Contact3
Bottom
Incorrect
2
If tooth contact is correct(Contact 2) continue next
procedure;
If tooth contact is incorrect(Contact 1&Contact3),
adjust the thickness of shim for the drive gear.
Repeat above steps to check tooth contact until
correct.
Adjustment:
3
Tooth contact
Thickness adjustment
Contact 1
Decrease thickness
Contact 3
Increase thickness
NOTE:
After adjusting the tooth contact,
the backlash must be checked again;
If the backlash is adjusted
but tooth contact is still out
of specification, replace the
drive and driven bevel gears;
Both tooth contact and backlash
should be within the required specification.
6 Engine Removal,Inspection and Installation
Balance Shaft
Remove the parts as illustrated on
the right.
Check each part for abnormal wear
or damage.
Replace if necessary.
1.Balance shaft gear
2.woodruf key 3.Balance shaft;
4.Balance shaft sprocket
5.Washer
6.Bolt
Magneto Rotor
Remove starter clutch nut.
1
2
2
4
5
6
Check starter clutch roller and holder for abnormal wear or damage,replace if
necessary.
Replace the starter clutch in the right direction.
NOTE:When install the starter clutch to the
magneto rotor, make sure side A is in the
right direction.
Face arrow mark B to the engine side.
Thread Locker
Apply engine oil to starter clutch
Apply thread locker to bolt and
tighten to the specified torque.
Tightening torque of starter clutch bolt: 26N.m.
Material: Thread locker
Install the starter driven gear.
Make that the starter driven gear turns in the
opposite direction of the arrow mark B.The gear
cannot turn in the direction of the arrow.
Tool
Check starter driven gear bearing. In case of
anything unusual, replace the bearing.
Remove starter driven gear bearing with special tool.
Tool
Install starter driven gear bearing with special tool.
Tool:Bearing installer/Remover
6 Engine Removal,Inspection & Installation
Electric Starter Gear
Check the gear surface for nicks or
damage, replace if necessary;
Left crank case cover:
Check magneto stator coil 2, pickup coil 3 for
damage,replace circuit if
necessary;
Apply Thread Locker
3
Check bearing 4 for smooth turning. If it is stuck,
replace with a new one;
2
Check oil seal 5 for damage. Replace
if it is damaged.
4
Apply thread locker to the bolt when
assembling;
5
1
Tightening torque for magneto
coil bolt:10N m
Apply lubricating oil to bearing 4 and lubricant
Apply Thread Locker
grease to lip of oil seal 5 when assembling.
4
Recoil starter disassembly:
1-Recoil starter
2-Bolt
3-Washer
4-Starter pulley
Inspection
Check sheave drum for burrs, cracks or rust. In case
of any abnormal, replace.
3
2
1
Recoil Starter
Disassembly is unnecessary if recoil starter works
well.
10
1
3
4
2
5
7
6
1.Cap, handle
2.Handle
3.Friction plate
4.Spring clamp
5.Pawl
6.Spring
7.Sheave drum
8.Rope
9.Coil spring
10.Nut
9
8
Disassembly
Remove nut 10 and the parts from the starter
housing.
WARNING:The coil spring may quickly unwind and
cause injury when the sheave drum is opened. Wear
proper hand and eye protection beforehand.
Inspection
Check all parts for damage. Repalce
if necessary.
6 Engine Removal,Inspection & Installation
1
Assembly
2
Reverse the removal procedure for installation and pay
attention to the following:
Install sheave drum 1 rope 2 coil spring 3 Damper 4.
Wind the rope clockwise around the sheave drum
three times and hook the rope at
of
3
4
sheave drum.
WARNING:The coil spring may quickly unwind and
cause injury when the sheave drum is opened. Wear
proper hand and eye protection beforehand.
Install coil spring 1 and sheave
Apply Lubricant Grease
1
Apply lubricant grease to spring;
Hook coil spring end 3 to the starter housing, wind the
coil spring clockwise
Hook the other end 5 of coil spring to hook part 4 of
sheave drum.
2
3
drum 2;
4
5
2
Install spring clamp 1 friction plate 2 and bolt
Put the end of spring clamp in the groove near the
1
damper.
Turn sheave drum clockwise three times to reload recoil spring.
Install handle 1 and handle cap 2
Lead the rope through the hole of the starter housing
and tie a knot 3 so that the rope would not be drawn
back.
After making a tie 4,draw back previous one 3.
1
2
3
4
CVT COVER
Remove screw 5, oil seal limitator 4 .Remove oil
seal 3 with sepecial tool;
Check bearing 2 for free turning. In case of any
abnormal, remove with special tool and replace with a
new bearing;
Apply lubrication oil to outer ring of bearing and
install bearing with special tool. Check bearing for
smooth turning.
Apply grease to bearing inner side
1.CVT Case Cover
2.Bearing
3.Oil Seal
4.Oil Seal Flapping Plate
5.Screw
6.Bolt
7.Washer
Apply grease oil seal lip and install bearing with
special tool. Check bearing for smooth turning
NOTE:Use a new oil seal
1
Install oil seal limitator and tighten screw after applying thread locker.
Tool:Bearing remover
7
6
Oil seal remover
2
3
5
4
Bearing installer
CVT Case
7
6
Check bearing 5 for smooth turning. In case of any
abnormal, remove screw 3 and bearing retainer 4 and
replace with a new bearing.
4
3
Check oil seal 7. In case of any damage, replace
2
it.
Apply grease to oil seal lip and install with special
tool;
1.Oil Seal
Apply lubrication oil to bearing 5 and install with
special tool; Check bearing for smooth turning. The
seal side of bearing 5 should face bearing retainer 4.
Install bearing retainer 4 and
screw 3;
Install oil seal 1 into clutch housing 2 with special
tool;
Tool:Oil seal installer
Bearing installer
5
2.Clutch Housing
3.Screw
4.CVT Bearing Flapping Plate
5.Bearing
6.CVT Case
7.Oil Seal
1
6 Engine Removal,Inspection & Installation
Crankcase
1-Right crankcase 2-Bearing 3-Bearing
4-Bearing 5-Bearing 6-Bearing 7-Oilseal l8-Washer,
reverse gear sensor
9-reverse gear sensor 10-O-ring 11-Gear sensor
12-Left crankcase 13-Screw 14-Oil pipe
15-Link bolt
16-Washer 17-Bearing 18-Bearing
19-Bearing 20-Bearing
21-Bearing 22-Oil dip rod 23- O-ring
24-Speed sensor 25-Bolt
26-Washer
27-Oil drainage bolt
Clean and grease the bearings, turn the inner race
of bearing and check the play, noise and smooth
turning. In case of any abnormal, remove bearing with
special tool and replace;
Check all the oil seals for wear or damage. In case
of any wear or damage, remove with special tool and
replace with a new oil seal;
Remove gear sensor 11 and check for continuity
with reverse gear sensor 9 with a multimeter;
Remove link bolt and oil pipe 14 and check oil pipe
for crack or clog. Replace with a new one if any;
Remove drainange bolt 27&clean it;
Use special tools to assemble bearnig or oil selas.
Lubricant oil is applied for bearing and oil seal lips.
Check bearing smooth turning after installation
NOTE:Check bearing for smooth turning after
installing.
Install new o-ring and apply grease;
Install gear sensor;
Install reverse gear sensor 9 and tighten to the
specified torque
Tightening torque:20N
m
Install speed sensor 24
Install oil pipe and tighten the link bolt to the specified torque:
Tightening torque:18N
m
Install washer 26 and oil drainage bolt 27 and
tighten to the specified torque;
Tightening torque:30N
m
Tool:Bearing remover
Bearing installer
Multimeter
Engine Assembly
Reverse the engine removal procedure for installation.
NOTE:
Clean all the parts before assembly;
Make sure that the parts are in good condition without any damage;
Apply engine oil to the moving parts before
assembly;
Apply grease to oil seal-lip&O-ring
CAUTION:Make sure that drive belt, primary and secondary sheaves are clean,dirt and grease free.
Engine Center
Oil pump and relief valve
Install oil pump and relief valve to left crankcase,
as illustrated on the right. Tighten to the specified
torque:
Oil pump bolt:10N
Relief valve bolt:10N
m
m
1.Left crankcase 2.Oil pipe
3.Oil pipe washer
4.Pressure strip, relief
5.Relief valve
6 Engine Removal,Inspection & Installation
Crankshaft
Install crankshaft to left crankcase with special tool.
4
NOTE:
Do not hammer the crankshaft into crankcase with
plastic mallet;
Use special tool to avoid affect of conrod precision
2
5
6
3
Tool:control installer
Balance Shaft
Install balance shaft.
CAUTION: Balancer shaft driven gear should be
aligned to the mark as illustrated.
Balance Shaft Drive Gear
Main Shaft,Counter Shaft
Install main shaft and counter shaft.
Balance Shaft
Driven Gear
Shift Cam, Shift Fork
1
Install shift cam 1 and shift fork 2.
2
Check each part for smooth turning.
Install low range driven gear to counter shaft 3.
3
Spray adequate engine oil to each part.
Drive Bevel Gear
Install drive bevel gear and tighten to the specified
torque.
Drive bevel gear tightening
torque:32N
m
Right Crankcase
Driven Bevel Gear
Install driven bevel gear and tighten to the specified
torque;
Driven bevel gear tightening
torque:25N
m
Check bevel gear backlash
(Refer to 6-44)
Front Output Shaft
Install front output shaft to right crankcase.
1
2
Apply sealant 1 to the mating face of right
crankcase;
NOTE:Apply sealant evenly in a
uninterrupted thin line
Install 2 dowel pins 2;
Assemble crankcase and tap slightly with a rubber
hammer for proper fitting;
Install bolt and tighten to the specified torque:
M6
N
M8:
m
N
m
NOTE:Crankcase bolts should be tightened
diagonally in several steps.
1
2
Gear Positioning Bolt
Place the steel ball and install gear positioning bolt
1 and tighten the bolt to the specified torque:
Tightening torque:18N
m
Engine Right
Timing Chain
Put on timing chain 2.
Clutch
Install clutch 1 and nut 2. Tighten the nut to the
specified torque(left thread);
Clutch nut tightening
torque:70N
m
1
2
Intall new O-ring 6 in spacer 8.
Install spacer 8 onto the clutch housing shaft, then
install into CVT case 7.
NOTE: align oil noter on spacer with oil hole on the
shaft.
11
10
3
CVT Case
Install dowel pin 4,gasket 2 gasket5,intall CVT case
assembly to the right crankcase.
7
9
8
6
Install bolt 12 and nut 3.
NOTE:
Tighten bolt/nut diagonally
4
Use a new gasket
2
Install guide plate 10 and screw 11.
5
Primary sheave,secondary sheave,drive
Belt
Install primary fixed sheave 1 as
illustrated on the right.
Install drive belt on secondary sheave and tap with
a plastic hammer to keep the belt as low as possible.
NOTE:
Install the drive belt with the arrow on
the belt turn in the clockwise direction;
Drive belt contact surface should
be free from any grease or oil.
1
6 Engine Removal,Inspection & Installation
Install secondary sheave.
Install primary sliding sheave.
Tighten primary sheave nut with special tool to the
specified torque.
Primary sheave nut tightening
torque:115N
m
Tool
Tool:CVT Holder
Tighten secondary sheave nut with special tool to
the specified torque.
Secondary sheave tightening
torque:115N
m
Tool
Tool:Rotor holder
NOTE:Turn the primary sheave until the belt is seated
in and both primary and secondary sheaves move together smoothly.
Sealing Gasket
CVT case cover
Install the new gasket and dowel pins.
Install CVT case cover bolts and tighten diagonally
in several steps.
Engine left
Oil pump sprocket and chain
Install oil pump drive sprocket;
Install oil pump driven sprocket;
Install oil pump drive chain;
Tighten oil pump sprocket bolt;
Install sprocket retainer with a long
Tool Long nose pliers.
Bolt
nose pliers.
Retainer
Dual gear/idler gear
3
Install dual gear shaft 1 and dual gear 2.
4
Install idler gear shaft 3,idler gear 4 and bush 5.
5
Starter driven gear
Install starting driven gear bush 6.
6
6 Engine Removal,Inspection & Installation
Starting Driven Gear
zInstall starting driven gear.
Magneto rotor
zInstall woodruff key into crankshaft groove.
zIntall magneto rotor 1.
1
NOTE:Degrease the tapered part of rotor and
crankshaft. Use nonflammable solvent to clean off
the oily or greasy matter and fully dry the surfaces.
2
2
Left crankcase cover
zInstall dowel pin 2 and gasket 3;
NOTE:Use a new gasket
3
zApply lubricant grease to oil lip.
zInstall left crankcase cover.
zInstall bolts.
Apply Grease
Recoil starter
zInstall recoil starter 1.
zInstall O-ring 2.
NOTE:Use a new O-ring and apply
lubricant grease to the O-ring
zInstall washer 3 and bolt 4, tighten to
the specified torque.
Recoil starter bolt
tightening torque:55N
1
m
2
3
4
Water pump
zInstall water pump.
zInstall water pump retaining bolts.
NOTE: Before tightening the bolts, be sure to
insert oil pump shaft into groove of water pump
shaft.
Sector gear
Install the parts as illustrated on the right.
1
1-Sector gear cover and gasket
2-Dowel pin
3-Drive sector gear
4-Driven sector gear
5-Driven sector gear bolt
2
3
NOTE:
When the shift cam is in the neutral position, the mark
of drive sector gear should be between the two marks
of the driven sector gear
Driven sector gear tightening torque:14N
zInstall gearshift rocker arm 6.
4
5
m
6
zInstall rocker arm bolt 7 and washer 8.
7,8
6 Engine Removal,Inspection & Installation
Oil filter
Install oil filter bolt and tighten to the specified torque.
Apply Grease
Tightening torque:63N m
zApply engine oil to O-ring.
zInstall oil filter, turn it by hand until the filter gasket
contacts the mating surface. Tighten the bolts.
Tool:Oil filter wrench
Starting motor
zApply engine oil to new O-ring.
zInstall starting motor.
Apply Grease
zInstall bolt and tighten to the
specified torque.
Tightening torque: 10N.m
Engine top side
Piston
zInstall the piston rings in the order of oil ring,2 ring
and 1 ring.
zThe first member to go to the oil ring groove is spacer
1, after placing the spacer, fit the two side rails 2.
Correct
WARNING:When installing the spacer 1,
do not overlap its two ends in the groove.
Incorrect
zInstall the secong ring A and first
ring B.
B
NOTE:1st ring and 2nd ring differ
in shape.
A
z1st and 2nd rings have letter R marked on the side.
Be sure to bring the marked side to the top when fitting them to the piston.
1st Ring
z
2nd Ring
z
zPosition the gaps of the three rings as illustrated on
the right. Before installing the piston into the cylinder,
check that the gaps are so located.
Upper Blading
Ring
2nd Ring
z
z
Lower Blading
Ring
z
z
Piston Pin
Center Line
z
z
Wave-shape Gasket
z
zApply a light coat of moly oil to the piston pin.
Apply moly oil
zInstall piston pin into holes of piston and conrod small
end.
NOTE: When installing the piston, the IN mark on piston top is located to the intake side.
zPlace a clean rag beneath piston and install piston
pin circlip 1.
NOTE: while rotating crankshaft, pull the
cam chain upward, or the chain will be caught
between sprocket and crankcase.
zInstall the dowel pins and the new cylinder gasket.
NOTE: Use a new cylinder gasket to prevent oil
leakage.
6 Engine Removal,Inspection & Installation
Cylinder
zApply engine oil to piston skirt and cylinder wall.
zHold each piston ring with proper position, insert
piston into the cylinder.
zTighten the cylinder base bolts temporarily.
NOTE: When installing the cylinder and cylinder head,
pull the cam chain upward, or the chain will be caught
between sprocket and crankcase.
zInstall chain guide 1.
zFit the dowel pin and new cylinder cover gasket.
NOTE: Use a new cylinder cover gasket to
prevent oil leakage.
Cylinder
zInstall the cylinder cover, tighten the cylinder head
bolts diagonally to the specified torque.
Cylinder head bolt tightening torque:
Initial:25N m
Final:46N m
z Tighten the cylinder head nuts to the specified
torque.
Cylinder head nuts tightening torque:
M6:
10N m
M8: Initial: 10N m
Final:25N m
zTighten the cylinder top nuts and cylinder base to
the specified torque.
Tightening torque:10N m
zInstall chain tensioner.
Camshaft
z Align mark A on magneto rotor with mark B on
crankcase.
A
B
NOTE:While rotating crankshaft, pull the cam chain
upward, or the chain will be caught between sprocket
and crankcase.
zAlign the mark A on the camshaft so that they are
parallel with the mating surface of the cylinder head.
NOTE: Do not rotate the magneto rotor while
doing this. when the sprocket is not
positioned correctly, turn the sprocket.
B
zEngage the chain on the sprocket with the locating
pin B as illustrated on the right.
A
zRecheck if the position of mark A and C is correct. If
not, reassemble until it is correct.
C
A
6 Engine Removal,Inspection & Installation
zInstall crankshaft C-ring 1.
zInstall lock washer so that it covers the locating pin.
zApply thread locker to the bolts before installing,
and tighten them to the specified torque.
Sprocket bolt tightening torque:15N m
zBend up the lock washer to lock
the bolts.
Cylinder head cover
zClean the mating surface of cylinder head and cylinder head cover.
zInstall dowel pin to the cylinder head.
zApply sealant to the mating surface of the cylinder
head cover.
zInstall cylinder head cover bolts, tighten diagonally
to the specified torque.
Cylinder head cover bolt tightening torque:
10N m
NOTE: When tightening the cylinder head
cover bolts, the piston must be at top dead
center on the compression stroke.
Apply thread locker
Gasket sealant applying place
Apply sealant
Chain tensioner
zInsert (--) screwdriver into slotted end of chain tension adjuster, turn it clockwise to lock the tensioner
spring.
zInstall the chain tensioner and the new washer 1.
zInstall the bolt 2, tighten it to the specified torque.
Chain tensioner bolt tightening torque:10N
m
zAfter chain tensioner is installed, turn the (--) screwdriver counter clockwise. The tensioner rod will be
advanced under spring force and push tensioner
against chain.
6 Engine Removal,Inspection & Installation
zInstall the new gasket 3.
zInstall chain tensioner screw, tighten it to the specified torque.
Chain tensioner screw tightening torque:8N
m
Apply lubricant
Valve adjuster cover
zRefer to 2-3 for valve clearance.
zUse new rubber gasket and apply grease.
zInstall Valve Inspection Cap.
zInstall valve inspection cap bolt.
Spark Plug
Spark plug
zInstall spark plug with special tool and tighten to the
specified torque.
NOTE: To avoid damage to the cylinder
head thread, screw in the spark plug with
hand first, then tighten it to the specified
torque with spark plug wrench.
Spark plug tightening torque:18N m
Tool: Spark Plug Wrench
Engine periphery
Recoil starter
zInstall recoil starter.
zApply thread locker to the bolts and then
tighten.
Valve inspection cap
zInstall valve inspection cap.
Apply thread locker
Valve Inspection Cap
Left plastic cover
zInstall left plastic cover 6.
Water pipe and hose
z Install water hose 5.
z Install bolt 4.
z Install water hose 3.
z Install clamp 1,2.
7 Fuel System, Air Intake System
Overhaul Info
Troubleshooting
High Pressure Fuel Line Disassembly/ Installation
Throttle Body Disassembly/Installation
Fuel Injector Assy Disassembly/Installation
Fuel injector Assy Removal/Assembly
Idle Air control valve Disassembly/Installation
Overhaul Info
CAUTION
NOTE
Gasoline is highly flammable, therefore smoke and fire are strictly forbidden in the work place.
Special attention should also be paid to sparks. Gasoline may also be explosive when it is
vaporized, so operation should be done in a well-ventilated place.
Do not over twist or bend the cables. The twisted cables may cause poor operation.
Loose the high pressure fuel line before disassembly, discharge the fuel in the high pressure fuel line
and put it in a container.
When the body of throttle valve is disassembled, the air intake shall be covered by dishcloth or tape,
for avoiding the entry of other objects into the engine from the air intake side of the engine.
When the vehicle will be stored for more than one month, the gasoline in the high pressure fuel line and
cap of the fuel injector must be discharged. Otherwise, the gasoline will age and form colloidal elements
which may block the nozzle of fuel injector, therefore the engine cannot start or the rotate speed is
unstable.
Overhail Info
Engine Starting Failure
Too much fuel in the engine.
-Ail filter clogged.
-Idle air pipe clogged.
No fuel in the injector.
-Fuel filter clogged.
-High pressure fuel line clogged.
-Fuel injector clogged.
Hard Starting/Stall After Starting,Unsteady
Idle Speed
Idle air pipe clogged.
Fuel system clogged.
Ignition system not functioning properly.
Fuel tank cap clogged.
Stall When Accelerating
Ignition system not functioning properly Incorrect
spark plug clearance.
7 Fuel System, Air Intake System
High Pressure Fuel Line Disassembly
Loosen the special fuel line clamp on fuel injector cap.
loosen the special fuel line clamp on fuel tank.
Disassemble High pressure fuel line.
NOTE:Use container to keep the remaining fuel
Special Fuel Line
Clamp
from high pressure fuel line, when loosening
the special fuel line clamp
High Pressure Fuel Line Installation
Throttle Body Connector
Idle Air Outlet Pipe
Fuel Injector Seat Clamp
Throttle Rotary
Sleeve
Reverse the disassembly procedure for installation.
Use OETIKER clamp calliper to install the special fuel
line clamp.
Throttle Body Disassembly
Loosen the strap and remove throttle valve connector.
Loosen locknut, remove adjust nut and remove the
throttle cable from throttle rotory sleeve.
Disassemble idel air outlet pipe on throttle valve.
Loosen air intake connect clamp, air cleaner connect
clamp, and remove throttle valve body.
NOTE:Do not adjust the bolt on throttle body.
Do not remove the cap on throttle body.
Throttle Body Installation
Reverse the disassembly procedure for installation.
Air Filter Clamp
High Pressure Fuel Line
Locknut
Ajusting Nut
Fuel Injector Cap
Fuel Injector
Fuel Injector Assy Disassembly
Disassemble the special high pressure fuel
Remove the strap and fuel injector connector.
Disassemble bolts and remove fuel injector cap and
injector.
Connector
Fuel Injector Assy Installation
Reverse the disassembly procedure for installation.
Bolt
Fuel Injector Assy Removal
Use thumbs of both hands to push two sides of fuel
injector cap snap spring, and then remove it.
Seperate fuel injector cap and fuel injector.
Fuel Injector Assy Assembly
Fuel Injector Cap
Install fuel injector cap on the fuel injector,
Align the groove of fuel injector cap snap spring to the
edge of fuel injector cap;and press the snap spring
Snap Spring
into it.
Fuel Injector
Idle Air Control Valve Disassembly
Disassemble idle intake pipe and idle outlet pipe.
Loosen the strap, disassemble idle air control valve
and check idle air control valve.
Replace it when there is abnormal noise or it doesnot
work.
Idle Air Control Valve Installation
Reverse the disassembly procedure for installation.
Pay attention not to bend the intake and outlet pipe of
idle air control valve.
Idle Valve Connector
Idle Intake Pipe
Idle Outlet Pipe
8 FRONT WHEEL,BRAKE SUSPENSION,STEERING SYSTEM
Overhaul ………………………………8-1
Br a k e S y s tem … …… …… …… …8 - 4
Fault Diagnosis ………………………8-2
Front Suspension System……………8-7
Front Wheel……………………………8-3
Steering System……………………8-12
Overhaul
Operation Notice
Attention
The frame must be hold up firmly when overhauling front wheel, suspention system.
Light,meter,switch overhaul or inspection refers to section10.
Do not overpower on the tire, be careful not to destroy the tire.
When disassemble the tire on the rims, to avoid destroy the rim, you required to use special tire-lever
and rim-protector.
Overhaul standard
Item
Standard
Portrait
Cross
Remain
groove
Tyre
Air pressure
Brake lever windage
0.8mm
0.8mm
Rim jump
Front disc
-
35kPa(0.35kgf/cm2)
0mm
Tightening torque
Steering tie-rod nut:
Steering shaft lock nut:
Front wheel shaft nut:
Suspension fixed bolt/nut:
Rim install nut:
Rim shaft nut:
40-50 Nm
100-120Nm
110 Nm
40-50 Nm
50-60 Nm
110-130 Nm
Service
limits
2.0mm
2.0mm
3.0mm
-
-
Special Tools:
Bearing Disassemble Tooling Bar
Bearing Disassemble Tooling Nod 10mm
Press In Tooling Lever A
Press In Tooling Coat 28 30
Guide Tool 10mm
Lock Nut Spanner
Bearing Disassemble Tools
Rotor Puller
DisassembleTooling Bar
Disassemble Heavy Punch
Assemble Tooling Bar
Fault Diagnosis
Handlebar Heavy
Upper screw over tightened.
Steering shaft worn or damaged.
Bearing inner, external race destroy, worn, step.
Steering column deformed or bent.
Tire pressure incorrect.
Tire worn out.
Handlebar Shake
Steering shaft destroy,bad tightening.
Left and right absorber unmatch.
Tire deflection.
Frame deformed or bent.
Tire destroyed.
Wheel shaft damaged or bent.
Front Wheel Jump
Rim deformed or bent.
Wheel shaft bad.
Tire bad.
Wheel out of balance.
Wheel shaft round bad tightening.
Wheel Rotation Dumb
Wheel shaft bad.
Front wheel shaft bent.
Brake drag.
Front Suspension Too Soft
Front suspension bounce weaken.
Tire pressure too low.
Front Suspension Too Hard
Front suspension bent.
Tire pressure too high.
Front Suspension Abnormal
Noise
Front suspension bad.
Suspension tightening parts loosen.
Brake Effet Poor
Brake adjustment bad.
Brake disc surface damaged.
Brake pads worn out.
8 FRONT WHEEL,BRAKE SUSPENSION,STEERING SYSTEM
Front wheel
Bolts
Disassemble
Set up front wheel with tool, ensure without any force
on the front wheel.
Remove steer cap.
Remove the four nuts installed in the front wheel hub,
Remove front wheel.
Inspection
Rim
Inspect the rim for damage, replace the rim if needed.
Turn the wheel slowly, use centimeter measure rim
jump.
Service limit:axial direction: 2.0mm
Radial direction:2.0mm
Rim Install Bolt
Installation
Press the rim in the tire on special matchin.
Fix the rim in hub
Rim install nut torque:50-60 Nm
Brake Disc
Front Wheel Hub Disassemble
Caliper
Disassemble
Remove front wheel
.
Remove front brake caliper
.
Remove rim shaft nut.
Take away brake disc and hub together.
Remove front brake disc 4pcs brake bolts.
Remove front wheel hub.
Installation
Installing carry on according to the opposite sequence.
Hub bolt torque :110-130 Nm
Hub
Hub Bolts
Brake System
Front Brake Caliper
Disassembly
Remove front wheel
.
Remove the 2pcs nuts installed on the arm
Remove brake caliper.
Front Caliper
Inspection
Check if the brake caliper crack is cracked,
if the tightening area oil leakage,
replace if needed.
Installation
Brake caliper holding bolt torque:40-50Nm
Bolts
8 FRONT WHEEL,BRAKE SUSPENSION,STEERING SYSTEM
Brake disc
Disassemble
Remove front wheel
Remove brake caliper
Take away brake disc together with front wheel hub.
Remove brake disc’s 4pcs nut installed in front wheel
hub.
Remove the brake disc.
Inspection
Brake disc thickness: replace when less than 2.5mm.
Brake Disc
Bolts
Installation
Install the brake disc well
Brake disc holding bolt torque:25-30Nm
Hand Brake Master Cylinder,Front Brake
Disassemble
Remove bolt.
Remove parking lever.
Seperate front hand brake master cylinder handlebar.
It is not necessary to remove the front hand brake
master cylinder if not replace the brake pump
assembly.
Parking Brake Lever
ATTENTION:Do not use brake tube hang the brake
pump,to prevent front hand brake master cylinder backdate,so keep installing position, at the
same time, fix it in the handlebar.
Brake hose routing trend according to Sction 1
cable, wire traces.
Must keep the brake hose routed correctly.
Complete the brake system installation,brake effort must be checked.
Bolts
Disassembly
Remove foot rest
Remove front inner fender RH
Remove bolt1, bolt2.
Seperate pedal brake master cylinder from the body.
Footbrake Master
Cylinder
Assembly
For assembly,reverse the disassembly procedure.
ATTENTION:
To avoid air into the brake pump, thus you must
to keep the assemble position, at the same time,
fix it in the vehicle body.
Brake hose trend refers to Section1 cable, wire
traces. It must ensure the brake hose routing .
After complete the brake system installation,
Bolt1
Bolt2
Brake Hose
checking the brake effort is required.
Brake Y-joint
Disassembly
Remove front inner fender RH
Remove bolt 1 then the brake Y-joint canbe remove
form the body.
Bolt
Assembly
For assembly,reverse the disassembly procedure.
ATTENTION:Brake hose routing refers to section
1, cable and wire routing, the brake oil line must
be smooth.
Brake force checking is required when complete
the brake system installation. If it cannot gang
control the brake system, check if the stem Tjunction, brake force checking is required after
Bolt1
Bolt2
finish the brake system installation.
Brake Cross Joint Plug
Disassembly
Remove front inner fender RH
Remove bolt 1, bolt 2, then the cross joint plug canbe
remove from the body.
Brake Cross Fitting
8 FRONT WHEEL,BRAKE SUSPENSION,STEERING SYSTEM
Assembly
For assembly,reverse the disassembly procedure.
ATTENTION:Brake hose routing refers to section
1 cable, wire line traces, brake oil line must be
smooth.
Brake force checking is needed after finish the
brake system installation, if it cannot join control,
check the cross plug.
Front Suspension System
Front Left Suspension assemble
Attention: when repairing suspension, you must not
remove both LH and RH suspension at one time, or
else the body will fall down because lack of holding
power.
Disassembly
Put vehicle body into horizontal position, use jack hold
the wheel front firmly.
Remove front wheel
Remove front rim hub
Remove caliper
Remove front left absorber bolt 1 and tightening nut 1
installed on the body.
Shock
Nut
Bolt1
Bolt
Bolt2
Remove front left upper arm bolt 1 and tightening bolt
1,nut 1; bolt 2 and bolt 2, nut 2 installed in the frame.
Front Shock,LH
Bolt2 Nut2
Front Upper A-arm,RH
Remove front left lower arm bolt 3 and tightening bolt
3’s nut 3, bolt 4 and tightening bolt 4’s nut4 installed
in the frame.
Remove steering tie-rod ball pin slot nut, remove the
steering pie-rod
Pull up joint knuckle from the driveshaft, remove front
left suspension assy.
Bolt4
Nut4
Nut3
Bolt3
Front Lower A-arm,LH
1.Bolt GB5789 M10
Bolt GB5789 M10
1.25
10
1.25
13.Brake Disc Guard
70 14.Bolt:GB5789 M6
3.Front Shock Absorber Assy
4.Nut:GB6187 M10
5.Cap,Buffering Collar
1.25
29 Dust Boot Set,Front Motion End
16.Bearing,Hub
30.Front Lower Arm,LH
18.Cotter Pin
31.Bearing Set,Motion End
32.Big Clamp,Motion End
7 Cap,Buffering Collar 19.LH Steering Knuckle
8.Front Upper Arm,LH
20.M6 Nut Clamp
9.Circlip
10.Top Ball Pin
21.Front Protector,LH
22.Front Axle,LH
11.Slot Nut
10 Washer
12 27.Small Clamp
28.Front Shaft,LH
15.Circlip
17.Buttom Ball Pin
6.Buffering Collar
26.Dust Boot Set,Fixed End
33.Wire Clamp
34.Wire Clamp
23.Wire Clamp
24.Big Clamp,Fixed End
25.Bearing Set,Fixed End
32
28
Disassembly
Front Shock Absorber
Disassembly
ATTENTION:You do not need to remove any other
parts if you only replace the front suspension.
Remove front left shock absorber’s bolt 1,nut 1 installed
in arm.
Remove front right shock absorber.
Inspection
Inspect the shock for oil leakage, oil seal damage,
destroy, replace if needed.
8 FRONT WHEEL,BRAKE SUSPENSION,STEERING SYSTEM
Assembly
For assembly,reverse the diassembly procedure.
Front left shock absorber disassembly, assembly, inspection are as same as front right shock absorber.
Arm Assembly
Attention:There are 8 suspension arms in the
vehicle, they dismantle,inspection and assemble
in the same way.So here only introduce the way
to dismantle,inspection and assemble the front
left upper arm and the front right lower arm. Other
arm assemble refers to the above.
Front RH Arm Assy
Disassembly
Remove front right absorber
Remove front right upper arm’s bolt 3 and tightening
nut 7, bolt 1, tightening bolt 1 and nut 7.
Remove front right lower arm’s bolt 3 and tightening
bolt 7’s nut 7 installed in the frame.
Before disassembling the shock absorber, you have
to remove the wheels, brake caliper and rim hub.
Before disassembling the bolts, you need to remove
the steering tie-rod.
Before disassembling front right lower arm assy, you
need to pull up the knuckle from the driveshaft.
Remove front right arm assy.
Inspection
Ball Joint
Inspect if it can rotate flexibly between top ball joint 5
and front left upper arm 22,bottom ball joint 13 and
front left lower 24. Besides, the gap between top ball
joint and bottom,if it cannot move freely or the gap too
big, ball joint replacement is needed.
Right Knuckle
Inspect the right knuckle for damage, replace it if
needed.
Inspect if the rim shaft inside right knuckle moves
freely, replace bearing if needed.
2
15
2
15
1.FRONT SHOCK ABSORBER
2.NUT 4.CIRCLIP 5.TOP BALL JOINT
7.CIRCLIP 8.BRAKE DISC GUARD
9.BOLT
10.BEARING, HUB
11.WASHER 10
13.BOTTOM BALL JOINT
14.BUFFERING COLLAR
15.CAP, BUFFERING COLLAR
17.NUT CLAMP M6
18.BOLT
19.SLOT NUT
20.COTTER PIN
21.BOLT
22.FRONT LEFT ARM (UPPER)
23.STEERING KNUCKLE ,LH
.FRONT LEFT ARM (LOWER)
25.FRONT PROTECTOR (LEFT)
26.SHOCK SPACER
27.Front Axle,LH
28.WIRE CLAMP
8 FRONT WHEEL,BRAKE SUSPENSION,STEERING SYSTEM
Front Axles
Attention:For this vehicle, inspection,disassembling and assembling the front&rear axles are
in the same way.Below introduces how to
disassemble,inspect,assemble front axle,LH.
Front Axle,LH
Disassembly
Attention:You do not need to remove the front
suspension assy from the vehicle if you only repair the front axle , LH.
Remove front wheel,LH
Remove front brake caliper,LH
Remove fornt rim hub,LH
Examine dust boot, replace with new one if damaged.
Shake the front axle,LH,inspect if the universal joint
moves freely, the bearing move freely.
Replace with new ones if abnormal sound or play is
found.
Attention:Double offset universal joint must can
be move freely, otherwise,it cannot control the
tires and result in accident.
Assembly
Use special tool to press the ball joint into the arm
assy.
For assembly,reverse the disassembly procedure.
Attention: Replacement is required if the
right&left arm shake after installation.
Mounting torque:40-50Nm
Steering System
Handlebar
Dashboard cover
Disassemby
Remove dashboard cover bolt1.
Remove dashboard cover.
Bolts 1
Cover,Dashboard
Assembly
For assembly,reverse the disassembly procedure.
RH Handlebar Switch
Disassembly
Remove front top cover
.
Remove RH handlebar switch connector.
Remove the two bolts installed in handlebar tube.
Remove handlebar switch, RH.
Handlebar Switch,RH
Installation
Install the handlebar switch, RH
.
Bolts 2
8 FRONT WHEEL,BRAKE SUSPENSION,STEERING SYSTEM
Handlebar Switch, LH
Disassembly
Remove 2 screws.
Screws
Remove LH handlebar switch connector.
Remove handlebar switch, LH.
Install
Install the LH handlebar switch
Rear View Mirror
Connector,Handlebar Switch
Disassembly
loosen the nut in counter-clockwise direction, then turn
the rear mirror in counter-clockwise and you can take
off the rear view mirror.
ATTENTION:Left hand rear view mirror is
right hand screw thread, turn it in counterclockwise direction when dismantling.
Loosen the nut in clockwise direction, turn the RH
rear view mirror then you can take down the RH rear
view mirror.
ATTENTION: RH rear view mirror is left hand
thread, you required to turn it in clockwise
direction when take it down.
Installation
For installation,reverse the disassembly procedure.
Rear View Mirror,RH
Handlebar Pipe
Disassembly
Remove the dashboard cover
Remove RH&LH handlebar switch
Seperate the right and left brake pump from the
hanlebar pipe.
Remove the four installation bolt, take down the handlebar.
Assembly
For assembly,reverse the disassembly procedure.
Torque:20-30Nm(2.0-3.0kgf m
ATTENTION:
Main cable assy,throttle cable,brake hose must route
correctly.
Bolts
Screws
Install Throttle Cable
Remove the three screws, remove RH handlebar switch
cover.
Throttle Cable
Install throttle cable
install RH handlebar switch cover.
Top Bracket,
Handlebar Switch,RH
8 FRONT WHEEL,BRAKE SUSPENSION,STEERING SYSTEM
Install LH Handlebar Switch
Pair the LH handlebar switch stopped onto the handlebar
location hole.
use bolt 1 tightening from the bottom.
Handlebar Switch,LH
Bolts 1
Insert the LH handlebar switch’s connector into the main
harness.
Handlebar Switch Connector
Handlebar Switch,RH
Install RH Handlebar Switch
Bolts 2
Install the RH handlebar switch stopped onto the handlebar location hole. Tightening through the bolt 2 from the
bottom.
Insert the RH handlebar switch’s connector into main
harness.
Handlebar Switch
Install RH&LH Grip
Clean inner LH grip and dry it. coat the connection
with joint cement between handlebar and LH grip, put
in the RH&LH grips.
Brake Pump
Parking Lever
Grip
ATTENTION:
The installed RH&LH grips must be placed for
hours for dry the joint cement.
Install Brake Pump
Install brake pump with “up” mark facing up.Make sure
the distance between brake pump and handlebar
switch us equal.
ATTENTION:
Main cable assy,throttle cable, brake hose must
route correctly.
Install Parking Lever
Install the rear view mirror
Install the dashboard
Install the dashboard cover
Bolts241
8 FRONT WHEEL,BRAKE SUSPENSION,STEERING SYSTEM
Steering System
21
1.Bolt1
21.Washer 2
2.Rubber Collar
3.Bracket Dashboard,RH
22.Nut 2
23.Steering Ball Joint
4.Bracket Dashboard,LH
5.Aluminum Cover,Handlebar
24.Nut 3
25.Tie-rod
6.Bolt2
7.Front Bracket,Dashboard
26.Nut 4
27.Steering Ball Joint
8.Bolt3
9.Lock Pad
10.Adapter Plate
11.Bush
12.Bushing,Steering Column
13.Seal Ring
14.Steering Lock
15.Screw
16.Steering Column
17.Cotter Pin
18.Nut 1
19.Washer 1
20.Pitman Arm
Steering Column
Disassembly
Lock Pad
Steering Bearing Seat
Remove dashboard front cover
.
Remove front wheel
.
Unhook handlebar switch connector.
Use straight screwdriver and hammer ,bend
out the lock pad.
Remove bolt1,bolt2.
Remove steering column seat, plate and bush.
Bolts
Adapter Plate
Nut
Remove cotter pin.
Remove steering tie-rod installation nut, washer.
Press and separate the steering tie-rod from
the steering column.
Remove steering stem installation bolt.
Cotter Pin
Washer
Steering Tie-rod
Raise up the steering stem and the handlebar together,
then you can remove the steering column.
Steering Tie-rod
Bolt
Installation
For installation,reverse the disassembly procedure.
ATTENTION:Check the agility after finishing the
installation.
Wires, cables must routes correctly .
Handlebar
Steering Column
Dashboard
8 FRONT WHEEL,BRAKE SUSPENSION,STEERING SYSTEM
Steering Bearing, Oil Seal
Disassembly
Remove front wheel
Remove steering column
Remove front ADWS arm assy
Use special tool separate the steering column and
the oil seal from the body.
Special tool:
Bearing Remover Component
Rotor Puller
Remover Axle
Remover Heavy Bob
Installation
For installation,reverse the disassembly procedure.
Special tool:
Bearing Race Installation tool A
Assembling Tooling Bar
ATTENTION:Special tool must be used when install the bearing.
ATTENTION:Check the agility after finishing the
installation.
Oil Seal
Bearing Retainer
Oil Seal
Bearing
9 Rear Wheel, Rear Brake, Suspension
Overhaul Info
Rear Brake System
Troubleshooting
Rear Wheel
Rear Suspension System
Overhaul Information
Operating Notice
Note
Securely support the vehicle when overhauling the rim and suspension system.
Use genuine parts of bolts and nuts for rear rim and suspension.
Do not overexert on the wheels to avoid possible damage to the wheels.
When removing tires from rim, use special tire lever and rim protector to avoid damage to the rim.
Overhaul Standard
Item
Re a r
W heel
Re a r
B ra k e
R im
V ib r a t io n
T ire
L o n g it u d in a l
H o ri z o n t a l
R e m a in e d
T ir e T re a d
T ire P re s s u r e
B ra k e L e v e r F re e P l a y
Tightening Torque
Rear Wheel Axle Nut:
Rim Mounting Bolt:
Upper Mounting Bolt, Shock Absorber:
Lower Mounting Bolt, Shock Absorber:
Nm
Nm
Nm
Nm
St a n d a r d
L i m it
-
-
2.0m m
2.0m m
-
3.0m m
30k Pa/5Ps i
-
10- 20mm
-
Troubleshooting
Rear Wheel Wobbles
Rim bent
Faulty Tire
Tire Pressure Too Low
Improper Wheel Balance
Improper Tightening of Wheel Axle Nut
Loosened Wheel Nut
Rear Shock Absorber is Too Soft
Weak Spring
Oil Leakage from Rear Shock Absorber
Rear Shock Absorber is Too Hard
Bent Rear Shock Absorber
Tire Pressure is Too High
Poor Brake Efficiency
Improper Brake Adjustment
Worn Brake Pad or Brake Disk
9 Rear Wheel, Rear Brake, Suspension
Rear Wheel
Removal
Refer to Front Wheel Removal
Inspection
Rim
Damage, bent, serious scrapes
Slowly turn the wheel, measure the rim runout with a
dial gauge.
Service Limit: Axial:2.0mm
Radial:2.0mm
Installation
Refer to Front Wheel Installation
Wheel Hub
Remove:
Rear Wheel
Rim Axle Nut
Wheel Hub
Installation:
Reverse the removal procedure for installation.
Tightening Torque, Rim Axle Nut:
110-130Nm
Wheel Hub
Nut,Rim Axle
Rear Brake
Rear Brake Caliper
Remove:
-Rear Left Wheel
-2 Bolts from Arm.
-Brake Caliper.
Bolts
nspection
Brake Caliper: Cracks, Oil Leakage: Replace
Installation
Reverse the removal procedure for installation.
Note: Refer to Chapter 1 for brake hose routing.
Rear Brake Disc
Rear Brake Disc
Remove:
-Rear Left Wheel
-Rear Drive Shaft
-Rear Brake Caliper
-6 Shear Bolts
-Parking Brake
-Rear Brake Disc
Shear Bolt
Rear Drive Shaft
Inspection
Brake Disc: Thickness 6.5mm
Replace
Installation
Reverse the removal procedure for installation.
NOTE: Refer to Chapter 1 for brake hose routing.
Nuts
Parking Brake
Remove:
-Rear Left Wheel
-Rear Drive Shaft
-Rear Brake Caliper
-6 Shaft Bolts
-Parking Brake
Parking Brake
Retainer
9 Rear Wheel, Rear Brake, Suspension
Rear Suspension System
Rear Right Suspension
NOTE:DO NOT remove both left and right suspension at the same time to avoid falling down of the
vehicle.
1.BOLT
2.GLAND COVER
3.RUBBER SUPPORT 4. BOLT
5.LOCK NUT
6. BOLT
7.REAR SHOCK ABSORBER
8.STABILIZER BAR
9.BALL PIN,LH 12. BOLT
13.DUST CAP 14.CENTER SPACER
15.BEARING, HUB 16.CIRCLIP
17.OIL CUP
18.HOLDER UNIT REAR WHEEL SHAFT
20.BUFFERING COLLAR
21.CAP, BUFFERING COLLAR
22.BOLT 23.REAR SUSPENSION PROTECTOR,RH
24.REAR RIGHT ARM (LOWER)
25.REAR RIGHT ARM (UPPER)
26.BALL PIN,RH
27.REAR ROCKER ARM SHAFT SEAT
28.BOLT
29.CONSTANT VELOCITY DRIVE SHAFT,RH REAR AXLE
30.WIRE CLAMP
Disassembly
Stabilizer Bar
Remove:
Bolt 1,Bolt 8, glander cover 2, Rubber support 3,
Bracket(8)and(5), Rubber Support(4)and(9), Nut2(2),
Nut10(12),Left Ball Pin 9, Right Ball Pin 26.
Remove: Stabilizer Bar(3)
Installation
Reverse the removal procedure for installation.
Rear Right Absorber
Removal
NOTE:Securely support the vehicle when removing rear left and right absorbers. Suspend wheels
from ground.
Maintenance of rear absorbers does not require
removal of rear suspension.
Remove the following parts from rear right shock
absorber:
-Bolt10(25)
-Nut7(27)
-Bolt7(19)
-Nut8(28)
Remove bolt 6 & scre 6 of the rear right shock absorber from the vehcile body.
Remove rear right shock absorber
Installation
Reverse the removal procedure for installation.
Rear Right Arm
Refer to Front Left Upper Arm in Chapter13 for the
removal, inspection and installation of Rear Right Arm.
Rear Left Suspension
Refer to Rear Right Suspension for the removal, inspection and installation of Rear Left Suspension.
10 Front Differential/Rear Gearcase
Overhaul information
Standards
Lubricating Priod
Item
Front Diff
Rear Gearcase
Interval
Capacity
Type
SAE15W/40 SF Initial: 0.33L/Replace:0.28L
or
Initial: 0.30L/Replace :0.25L
SAE80W/90 GL-4
Item
Pcs
Specification
Front Diff Bolt
M
Front Diff Motor Screw
M
Pinion Shaft Screw
M
Front Diff nut
M
Diff. gear bolt
M
Oil bolt,Front Diff
M
Drain bolt,Front Diff
M
Retainer
M
Rear Gearcase Bolt
M
Rear Gearcase Bolt
M
Nut,Input Shaft,R/A
M
Bolt,Input Shaft,R/A
M
Retainer, R/A
M
Nut
Next
Initial
M
Oil Bolt,Rear Gearcase
M
Drain Bolt,Front Diff
M
Torque(N.m)
350km
5000km
Remark
With loctite
Inspection & Overhaul
Inspection and overhaul is needed if any of problems below happens to front diff and rear gearcase.
Problem Descriptions
Causes
Unstable moving during accelerating,
A.Bearing broken.
decerating or constant speed.
B.Gear clearance over/under size.
C.Gear severely worn.
Abnormal sound in front diff or rear gearcase.
Engine power tranmission failure to
D.Gear blocked.
E.Drive shaft broken.
F.lack of lubricant.
G.Foreiggn matter in front or rear gear.
front or rear wheels.
NOTE:A,B,C problems are hard to distinguish. Analysis is needed based on actual break-down
catagories.Make sure engine works all right before disassembly of front diff and rear gearcase.
Observation and Judgement
1.Never ignore abnormal sound:
a. Abnormal sounds during accelerating,decelerating have little
to do with engine working, but possibly with gears being worn.
b.Constant abnormal sounds during accelerating or decelerating might be caused
by incorrect gear lash.
NOTE:Wrong assembly or adjustment of the front diff or rear gearcase will aggravate gear
worn and block;
c.Slight sounds will be noticed during low-speed driving, and
should not be heard during high-speed driving.This is caused by
gear wear.
NOTE:In case of above mentioned itmes, stop the vehicle immediately for inspection until they are
solved, or it may cause an accident
2.Check lubrication if it’s under normal condition;
3.Chcek for lubricant leakage;
a.Rear gearcase surface oil leakage;
b.Oil leakage on ground ;
c.Lubricant splash inspection.Check if there is gear case or oil seal leakage. Replace broken
parts if necessary.
10 Front Differential/Rear Gearcase
Front Diff Xploded View
24
23
22
21
20
31
16
19
17
15
(10)
18
18
14
10
9
8
13
7
25
6
12
11
26
5
28
3
27
2
4
29 30
1
Item
Part Name
Qty
Item
15
Part Name
Bolt M
Bearing F1512
Front Diff
Drive Pinion Gear
O-ring
Bearing 6007
Bearing 16007
Oil Seal
Circlip 62
Coupler
Drive Clutch Cover
O-ring
Drive Clutch
Nut Washe
Adjust Washer
Nut M
Differential. Gear assy
Screw M
Adjust Washer
Gear Motor
Bolt M
O-ring
Washer
Rack
Washer
Pinion Shaft
Bolt M
Screw M
Oil Seal
Front Diff Cover
Retainer M
Qty
Inspection After Front Diff Disassembly
Check if there is damage or cracks on the front diffrential gear case cover and
bearing bore.Replace case cover if necessary;
Check if front axle bearing clearance is ok,replace bearing if needed.(Using special
tools)
Check if oil seal lips and O-ring are ok. Replace if necessary;
Check drive pinion gear and differential gear, inspect wear surface. Replace broken or
damaged gears.
Check gear motor working status. Replace if necessary.
Gear motor inspection must be carried out with special equipment or tested on the vehicle.
Check other parts. Replace worn parts .
10 Front Differential/Rear Gearcase
Front Diff Assembly And Adjustment
Front Diff Case Cover Asselbly
15
16
17
18
19
31
20
22 21
Item”31 ”Tightening torque 80Nm
Item ”24 ”Tightening torque 62Nm
NOTE:Use engine oil for oil seal, bearing and
drive clutch assembly;“24”Use loctite.
10
23 24
2
Front Diff Case Assembly
6
Note:Use engine oil for oil seal or
bearing assembly.
15
Differential Gear Assembly
Gear Shaft
Bolt M10
Tightening torque: 45Nm
NOTE :Use engine for bearing and differential gear;Use proper washer to make gears
mesh correctly.
Washer
Thickness
Gear(center),Diff
Bearing
Bracket,Diff
Adjust Washer
Shim
Washer
Driven Gear
0.1 0.2 0.3 0.4
0.5 1.0
Pin
Drive Gear
Sealing Ring
Bolt M10
Bearing
Top Bracket,Diff
Diff Gear
Front Diff Assembly And Adjustment
1
8
As illustration shows:
Tightening torque
Item ”1 ”
25Nm
Item”25”
13Nm
Item ”30 ”
13Nm
Bolt
25Nm
Bolt
25Nm
7
3
10
28
29
30
27
25
26
Use loctite for item”30 ”assembly.
a Use proper washer 8 and 10 thick
ness to
adjust gear side clearance between drive pinion
gear and differential gear
Drive bevel gear clearance measurement; Install
support tools,tighening bolts( M10X1.25X60 ) put
up dial indicator, make sure 21 mm is between
measuring point and support tools.Turn support
tools counter-clock and read the data.
Standard:0.10-0.25
b Shift fork and drive clutch assembly should
be in this position when assembly of front axle
motor.
Support Measurement Tool
Tightening M10X1.25X60
10 Front Differential/Rear Gearcase
c Use special equipment or vehicle control
circuit into 2WD position before gear motor
assembly
d Make sure b and c is assembled properly and using illustrated positionging screw
to assemble gear motor and front axle¡£
Positioning Screw( M8X100 )
Rear axle exploded view
4
9
27
28
26
Item
1
Part Name
Bolt M10
1.25
Bolt M8
25
25
Qty
Item
2
18
Part Name
O-ring 64.5
Qty
3
Bearing 6305
Rear Gearcase Bearing Housing
Bearing Retainer
O-ring 151
Drive Gear, Rear Gearcase
3
Bearing 16017/C2
Bearing Inner Race
Adjust Washer(2)
Bearing Outer Race
Driven Gear,Rear Gearcase
Adjust Gasket
Adjust Washer(1)
Washer14.5
Needle Bearing
Bolt M14
1.25
Rear Gearcase
O-ring 19
2.5
Oil Seal SD4 65 90 9 NS
Bolt M20
1.5
Nut M12
Screw M8
1.25
Washer 12.5
30
4
Coupler, Rear Gearcase
Bolt M8
35
Oil seal
Bevel Gear Bearing Housing
Washer 8.2
Nut M8
21
1.5
12
12
45
15
1.5
10 Front Differential/Rear Gearcase
Disassembly Of Bearing
a
Disassemble needle bearing as left draw-
ing shown when necessary.
b When replacing needle bearing, rear bearing housing should be heated to 150
removing bearing.
before
Rear Gearcase Inspection After Disassembly
Check if there are cracks or damage in rear gearcase, check mounting holes for damage .
Replace gear case or right cover if necessary.
Check all bearings,if rough or damaged,replace as needed.(Special tools are required)
Check drive bevel gear and ring gear rear axle. Replace if necessary.
Check oil seal lips, o-ring shape. Replace parts if necessary.
Check inner and outsider spline. Replace if necessary.
Check other parts. Replace if necessary.
Rear Gearcase Assembly And Adjustment
Illustration
15
20
8
Tightening Torque
12
Item ”1”
40Nm
Item ”2”
Item”12”
25Nm
70Nm
Item”15”
Item”20”
25Nm
70Nm
Item”31”
Bolt
16Nm
25Nm
Bolt
25Nm
24
1
29
31
6
Use loctite for Item”29”assembly
Assembly and clearance adjustment of drive
gear of rear axle
a By choosing “24”washer to adjust clearance.
b By choosing “6” washer to adjust clearance.
c By coating color to check contact surface if
Support Measurement Tool
it’s ok for mating.
d Inspect installing clearance by checking bevel
gear clearance;By using assistant measurement
tool to check its clearance.
Standard:0.1-0.2
Keep installing point bearing clearance 0.
1-0.2 by choosing ”8’ washer.
Washer
Thickness: 0.2 0.3 0.4
“6”
Washer
“8”
Wahser
”24”
Thickness 1.0 1.2 1.4 1.6
1.8
Thickness 0.4 0.5 0.6
Tightening(M14
1.25
60)
2
10 Front Differential/Rear Gearcase
f Adjust item 29 as illustrated, and make sure
Driven Bevel Gear
its end and back clearance of drive gear is 0.30.6. Tighten item 31.
Apply Loctite Here
29
31
11 Electric System
CHARGING SYSTEM
ELECTRIC STARTING SYSTEM
ELECTRICITY-SPRAYING SYSTEM
ELECTRICITY-SPRAYING SYSTEM STRUCTURE
ELECTRICITY-SPRAYING SYSTEM DIAGRAM
ELECTRICITY-SPRAYING SYSTEM MAINTENANCE NOTICE
MAINTENANCE TOOL
ELECTRICITY-SPRAYING SYSTEM COMPONENTSCOMPOSITION&FUNCTION
ECU
THROTTLE ASSEMBLY
INLET PRESSURE SENSOR
INTAKE AIR TEMPERATUR SENSOR
WATER TEMPERATURE SENSOR
OXYGEN SENSOR
TRIGGER
ODOMETER SENSOR
SHIFT LEVER POSITION SENSOR
FULE OIL PUMP ASSEMBLY
OIL ATOMIZER
IDLE AIR CONTROL
IGNITION COIL
ELECTRICITY-SPRAYING SYSTEM SELF-DIAGNOSIS
TROUBLE LIGHT
DIAGNOSTIC EQUIPMENT
TROUBLE CODE
VEHICLE SCHEMATIC CIRCUIT CIRCUIT DIAGRAM
CHARGING SYSTEM
CHARGING CIRCUIT DIAGRAM
Fuse
Regulate
Magneto
Voltage Regulator
MAGNETO COIL RESISTANCE
MEASURE TRIPHASE MAGNETOR STATOR
COIL RESISTANCE
IF THE RESISTANCE VALUE OUT OF PRESCRIBED VALUE, REPLACE THE STATOR COIL.
INSPECT IF THE STATOR COIL AND STATOR
CORE INSULATION.
TURN MULTIMETER TO
MAGNETO COIL RESISTANCE:
YEL LOW-YELLOW)
INSULATING RESISTANCE:
YELLOWGROUND)
MAGNETOR NON-LOADED PER
FORMANCE
START THE ENGINE LET IT GOES TO 5000Rpm
USE MULTIMETER MEASURE MAGNETO
STATOR COIL THREE OUTPUT LINE VOLTAGE.
IT THE RESULT VALUE BELLOW THE SETTING
VALUE, CHANGE A NEW MAGNETO.
ADJUST MULTIMETER TO ALTERNATING VOLT
AGE GRADE
MAGNETOR NON-LOADED STATE COIL VOLT
AGE VALUE:
5000Rpm
200V(ALTERNATING CURRENT)
Load
Battery
11 Electric System
Black
Red
Green
White
USE MULTIMETER MEASURE THE RESISTANCE BE
TWEEN THE TERMINALS,AS BELOW FORM SHOWS,
IF THERE IS ONE DATA OUT OF THE SETTING VALUE,
REPLACE WITH A NEW ONE.
AFTER ENGINE RUNNING, BATTERY FULL POWER,
IF VOLTAGE BETWEEN RED LINE, GREEN LINE EX
CEED 15V OR UNDER 12V,REPLACE WITH A NEW
ONE.
ADJUST MULTIMETER TO DIODE
ATTENTION:
WHEN MULTIMETER PROBE UNCONNECTED,IF THE
MULTIMETER SHOWS BELLOW 1.4V, THEN REPLACE
IT’S BATTERY.
Red
Yellow
Yellow
Yellow
Green
Black
Yellow
400-500
Yellow
400-500
Yellow
400-500
Green
Red
Black
400-500
400-500
400-500
750-800
Red
Black
STARTING SYSTEM
TRIGGER CIRCUIT DIAGRAM
Electric Fuel Pump
Ignition Switch
ECU
Fuel Pump Relay
Start Switch
Auxiliary Relay
Fuel Injector
19 18 17 16 14
5 4 3 2 1
Ignition Coil
Speed Signal
Trouble Lamp 12V
R Gear Switch
4WD/lOCK Switch
Override Switch
Intake Air Temp Sensor
Green
Bluel
+5V Power
IACV
22 21 20
9 8 7 6
WPS
26 25 24 23
13 12 11 10
Trigger
Map Sensor
TPS
O2S
RPM output
K
Battery 12V
Start Motor
M
STARTING MOTOR
1
3
2
1.End Cover
5
2.Brush Holder
4
3.Brush Spring
6
4
4.O-ring
5.Brush Terminal
6.Starting Motor Cylinder
7.Washer
8.Armature
9.Washer
10.Inner Cover
11.O-ring
9
7
11
8
10
11 Electric System
ELECTRIC BRUSH
CHECK IF THE ELECTRIC BRUSH PERMANENT
SEAT ABNORMAL,CRACK,UNSMOOTH
IF THERE IS ANY BROKEN, CHANGE THE WHOLE
ELECTRIC BRUSH ASSEMBLY
COMMUTATOR
CHECK IF THE COMMUTATOR CHANGE COLOR,
ABNORMAL DAMAGE OR OVER WEAR.
IF THERE IS WEAR OR DISCOLORATION , RE
PLACE WITH A NEW AMATURE.
IF THE COMMUTATOR SURFACE
DISCOLOURATION, POLISH WITH SEND PAPER
AND WIPE UP WITH DRY CLOTH.
IF OVER WEAR, CUT PART OF B INSULATOR WITH
BLADE,KAME THE DISTANCE BETWEEN A AND B
TO d.
d
1.5mm
ARMATURE COIL
USE MULTIMETER CHECKING IF IT IS INTERCOMMUNICATION BETWEEN THE TERMINALS, BETWEEN TERM I N A L S A N D A R M AT U R E S . I F T H E Y N O T
COMMUNICATION, REPLACE WITH A NEW ARMATURE.
OIL SEAL
CHECKING IF OIL SEAL LIP DESTROY OR OIL LEAK.
IF THERE IS ANY DESTROY OR LEAKAGE, REPLACE
WITH A NEW STARTING DYNAMO.
INITIATING RELAY
PUT 12V TO THE SMALL TERMINALS;THERE IS
CONTINUITY BETWEEN THE LARGE TERMINALS.
IF THE START RELAY CONTACTS,SHOULD MAKE
A CLICKING SOUND.
WHEN POWER IS TAKEN AWAY FROM THE SMALL
TERMINALS,THERE SHOULD BE NO
CONTINUITY BETWEEN LARGE TERMINALS.
IF BOTH ABOVE TWO ITEMS ARE OK,IT
INDICATES THE RELAY IS OKAY.
ADJUST MULTIMETER TO DIODE GRADE.
WARNING:
RELAY VOLTAGE LOADED CANNOT EXCEED 2MINS,
OR ELSE,IT WILL CAUSE THE RELAY OVERHEAT AND
BURN THE RELAY COIL.
USE MULTIMETER MEASURING STARTING RELAY
COIL RESISTANCE,IF THE VALUE OUT OF THE
SETTING RANGE, REPLACE WITH A NEW ONE.
ADJUST MULTIMETER TO
START AUXILIARY RELAY COIL RESISTANCE:
START AUXILIARY RELAY,FULE PUMP RELAY
APPLY 12VOLTS TO THE TWO TERMINALS.USE
A
MULTIMETER MEASURE IF CONTACTS A,B IS MEET.
ADJUST MULTIMETER TO DIODE GRADE.
IF THE STARTING RELAY CLICKS .
WHEN NON-LOADED 12V VOLTAGE,THE TWO
CONTACTS UNCONNECTED.
EITHER OF THE ABOVE TWO ITEMS IS SHOWS THE
RELAY IS FINE.
ADJUST MULTIMETER TO 1X100
MEASURING
B
Earthing
THE COIL RESISTANCE
AUXILIARY RELAY COIL RESISTANCE:90-100
ATTENTION:
AT THE BACK OF AUXILIARY RELAY,PARALLEL TO THE
DIODE DIRECTION, IT IS THE RELAY COIL’S ANODE.
Connect Battery Anode
11 Electric System
STARTING ENGINE NOTICE
JOINT LINES ACCORDING TO TRIGGER
CIRCUIT.
BEFORE STARTING, CHECK IF ALL THE
PARTS ARE CORRECT JOINTED.ELECTRICITY
SPRAYING JOINT SEE BELOW:
CHECK IF GAS CIRCUIT NORMAL.
CHECK IF OIL CHANNEL AT FAULT.
IF BLOCKED,CLEAR BLOCKED PART, SECURE
FUEL CHANNEL SMOOTH.
IF LEAKAGE,RELINK LEAK SECTION, SECURE THE
FUEL CHANNEL NO LEAKAGE.
USE FUEL PRESSURE GAUGE TO MEASURE
FUEL PRESSURE.
FULE PUMP OUTPUT PORT PRESSURE:0.3 0.01Bar
CHANGE ENGINE SHIFT HAND LEVER TO
NEUTRAL.
USE DIAGNOSTIC EQUIPMENT CHECK IF AT
FAULT, IF YES, CLEARING OF FAULT ACCORDING
TO DIAGNOSTIC TROUBLE CODE.
CLOSE THROTTLE,TURN OFF THE IGNITION
SWITCH,PRESS START SWITCH 3-5 SECONDS:
START THE ENGINE, WARM UP TO IDLE SPEED
STABLE,EXAMINE IDLING SPEED:
IDLING SPEED:1400 100rpm.
Fuel Pressure Gauge
ELECTRONIC FUEL INJECTION SYSTEM
IACV
Ignition Coil
MAP Sensor
Air Filter
Oxygen Sensor
Intake Air Temp Sensor
Throttle Body Assy
Water Temp Sensor
Trigger
Fuel Pump Assy
ENGINE ELECTRONIC FUEL INJECTION SYSTEM INCLUDING THREE PARTS:
OXYGEN SENSOR(EXCESS AIR COEFFICIENT
ABOVE 1 OR LOWER THAN 1
(1)SENSOR:
TRANSFORM THE ENGINE NON-ELECTRICITY
PHYSICAL QUANTITY TO ELECTRICITY QUANTITY,
AND PROVIDE ALL THE INFORMATIONS TO THE
ELECTRONIC CONTROL UNIT.IT IS THE
ELECTRONIC CONTROL’S SPY. INCLUDING THE
FOLLOWING SENSORS:
INLET PRESSURE SENSOR
(LOADING INFORMATION).
INLET AIR TEMPERATURE SENSOR
(AIR DENSITY INFORMATION).
THROTTLE POSITION SENSOR (LOADING
INFORMATION¡¢LOADING RANGE INFORMATION,
CCELERATION AND DECELERATION INFORMATION).
TRIGGER (BENT AXLE PHASE
POSITION INFORMATION).
WATER TEMPERATURE SENSOR (ENGINE
TEMPERATURE INFORMATION).
ODOMETER SENSOR (OUTPUT SHAFT SPEED
FOUR WHEEL DEAD LOCK (4WD DEAD LOCK
INFORMATION).
ASSISTOR SWITCH (RELIEF SPEED
LIMIT INFORMATION).
(2)ECU:
ELECTRONIC CONTROL UNIT, IT IS THE BRAIN OF
THE ENGINE MANAGEMENT SYSTEM.IT ANALYZE AND
PROCESS KINDS OF INFORMATIONS PROVIDE BY THE
SENSORS, REACH A CONCLUSION, AND THEN TRANSMIT THE CONCLUTION TO THE ACTUATOR, SO AS TO
ENSURE THE ENGINE OPERATION UNDER OPTIMAL
STATE.
ACTUATOR:
EXECUTE THE ECU INSTRUCTION. THE ACTUATOR
IS THE HAND OF ECU, THE MAIN ACTUATORS ARE.
FUEL PUMP ASSY(SUPPLY HIGH
PRESSURE FUEL).
FUEL INJECTOR(INJECTQUOTAL FUEL,MAKE FUEL
SPRAY EXCELLENT).
INFORMATION).
IGNITION COIL(PROVIDE HIGH PRESSURE
GEAR SENSOR GEAR INFORMATION)
(INCLUDING GEAR SENSOR AND REVERSE
IGNITION ENERGY TO SPARK PLUG).
GEAR SENSOR)
IDLE SPEED CONTROL VALVE(PROVIDE
IDLE SPEED AIR INPUT).
11 Electric System
ELECTRONIC FUEL INJECTION SYSTEM DIAGRAM
ECU
2
23
11 5 26
4
1213
25 3 8 7 9
6
18
201011
19
1
11
14
24 15
22 16
Auxiliary Relay
Fule Pump Relay
O2S
Fule Injector
IACV
USE QUALITY COMPONENTS FOR SERVICE, OR ELSE IT
MAP Sensor
ELECTRONIC FUEL INJECTION SYSTEM MAINTENANCE
NOTICE
Ignition Coil
TPS
Intake Air Temp Sensor
Ignition Coil
Override Switch
R Gear Switch
4WD/LOCK Switch
Speed Signal
RPM
Trigger
Faut Lamp
Diagnostic Wire
Fule Pump
FUEL PIPE’S DISMANTLE AND FUEL FILTER¡¯S REPLACEMENT
SHOULD BE CARRY ON BY PROFESSIONAL PERSON IN WELLVENTILATED PLACE.
CANNOT GUARANTEE THE ELECTRONIC FUEL INJECTION
NORMAL OPERATION.
IN THE COURSE OF MAINTENANCE, NEVER TRY TO BREAK
DOWN THE ELECTRONIC PARTS.
IN THE COURSE OF MAINTENANCE, THE ELECTRONIC
COMPONENTS MUST BE HANDLED CAREFULLY.
WHEN INSPECTING THE IGNITION SYSTEM,ONLY IF
NECESSARY,DO SPARK TEST,AND SHOULD BE AS FAST
AS POSSIBLE, DONOT OPEN AIR SAMPER WHEN TESTING,
OR ELSE PLENTY OF UNBURNED FUEL WILL ENTER THE
VENT-PIPE AND DAMAGE THE TRIPLET CATALYST.
IDLE SPEED REGULATION COMPLETELY CARRY OUT BY
WHEN CUT DOWN OR CONNECT UP PLUG CONNECTOR,
ELECTRONIC FUEL INJECTION SYSTEM,THROTTLE VALVE
YOU MUST TURN OFF THE IGNITION SWITCH, OR ELSE THE
GUN LIMIT SCREW ALREADY SETTED WHEN IT LEAVE THE
ELECTRONIC FUEL INJECTION COMPONENTS WILL
BE DAMAGED.
WHEN TAKE DOWN THE ELECTRIC FUEL PUMP, DONOT
ENERGIZE THE FUEL PUMP, IT CAN GENERATE SPARK AND
CAUSE FIRE.
FACTORY,IT INITIAL POSITION CANNOT BE CHANGED EASILY.
WHEN INSTALLING THE BATTERY, THE POSITIVE AND THE
GROUND CANNOT BE INSTALLED WRONG. THIS SYSTEM
APPLYS NEGATIVE GROUND.
WHEN ENGINE RUNNING,DON’T UNHOOK THE BATTERY
FUEL PUMP NOT PERMITTED DO OPERATION TEST UNDER
DRY STATE OR IN WATER.OR ELSE WILL SHORTEN IT’S LIFE.
BESIDES,THE OIL FUEL PUMP TWO EXTREMES CANNOT
REVERSE CONNECTION.
ELECTRONIC FUEL INJECTION SYSTEM FUEL SUPPLY
PRESSURE IS HIGH(AROUND 300kPa),THE FUEL PIPE ALL
APPLY HIGH PRESSURE RESISTANCE PIPE,SO DO NOT
DISMANTLE THE PIPE WHEN THE FUEL SYSTEM NEEDED TO
BE REPAIRED,YOU HAVE TO DO FUEL PIPE PRESSURE
RELIEF BEFORE DISMANTLE THE OIL PIPE.PRESSURE RELIEF
METHOD IS AS FOLLOWING:
REMOVE FUEL PUMP RELAY,STARTING THE ENGINE AND
LET IT IDLE , UNTILL THE ENGINE DIES ITSELF.
CABLE.
BEFORE CARRY OUT ELECTRONIC WELDING ON THE
VEHICLE,YOU ARE REQUIRED TO UNHOOK THE BATTERY
POSITIVE TERMINAL, NEGTIVE TERMINAL AND ECU.
DONOT USE METHOD IMPALE LEAD CUTICULAR TO TEST
COMPONENTS’S INPUT AND OUTPUT ELECTRICAL SIGNAL.
SET UP ENVIRONMENTAL PROTECTION CONSCIOUSNESS.
TREATING THE WASTE AFTER MAINTENANCE.
SERVICE TOOLS
TOOL NAME:DIAGNOSTIC EQUIPMENT
FUNCTION:
READ CLEAR ELECTRONIC FUEL INJECTION SYSTEM
T R O U B L E C O D E , O B S E R V E D ATA S T R E A M ,
COMPONENETS MOTION TESTS.
TOOL NAME:DIGITAL MULTIMETER
FUNCTION:
INSPECT ELECTRONIC FUEL INJECTION SYSTEM
VOLTAGE,CURRENT, RESISTANCE ETC.
TOOL NAME:VACUUM METER
FUNCTION:
INSPECT INLET PIPE PRESSURE STATE.
11 Electric System
TOOL NAME:ELECTRONIC IGNITION TIMING
FUNCTION:
INSPECT ENGINE ELECTRONIC SPARK TIMING.
TOOL NAME:CYLINDER PRESSURE GAUGE
FUNCTION:
CHECK CYLINDER COMPRESSION.
TOOL NAME:FUEL PRESSURE GAUGE
FUNCTION:
INSPECT FUEL SYSTEM PRESSURE STATE,JUDGE
THE FUEL SYSTEM FUEL PUMP AND FUEL PRESSURE
REGULATING VALVE WORK STATE.
ELECTRONIC FUEL INJECTION PARTS STRUCTURE AND FUNCTION
(1)ECU:
ECU,IT IS THE BRAIN OF THE ENTIRE ELECTRONIC FUEL INJECTION SYSTEM. IT ANALYZE AND PROCESS THE INFORMATIONS
PROVIDED BY THE SENSOR, REACH A CONCLUSION, THEN
TRANSMIT THE CONCLUSION TO THE ACTUATOR AS
INSTRUCTION,SO AS TO MAKE THE ENGINE OPERATION IN OPTIMAL STATE.
ECU EACH STITCH FUNCTION:
1.IGNITION COIL CONTROL SIGNAL
2.GROUND
3.VEHICLE SPEED SIGNAL
4.TROUBLE LAMP
5.IGNITION SWITCH POWER+
6.INTAKE AIR TEMPERATURE SENSOR SIGNAL
7.REVERSE GEAR
8.4WD DEAD LOCK SWITCH SIGNAL
9.ASSISTOR SWITCH SIGNAL
10.+5VPOWER OUTPUT
11.IGNITION SWITCH POWER+
12.TRIGGER SIGNALA
13.TRIGGER SIGNALB
14.OIL ATOMIZER
15.OXYGEN SENSOR HEATING
16.SUPPLEMENTARY RELAY
17.IDLE SPEED CONTROL VALVE(CARBON TANK CONTROL VALVE)
18.WATER TEMPERATURE SENSOR SIGNAL
19.INLET PRESSURE SENSOR SIGNAL
20.AIR DAMPER POSITION SENSOR SIGNAL
21.SENSOR
22.OIL PUMP
23.BATTERY POWER+
24.OXYGEN SENSOR
25.ENGINE SPEED OUTPUT
ECU
ECU Connector
LIMIT DATA:
Value
Quantity
Nornmal Operation
Battery Voltage
Withstanded
Overvoltage and Time
Limited Function
26.0V
MIN
Typical
9.0
14.0
6.0-9.0
Limited Function
Such As Diagnosis
Working Temp
Storage Temp
DISALLOW TO ADD LOAD ON CRUST OR COVER
BOARD.
HANDLED CAREFULLY AND AVOID TO DROP ON THE
FLOOR.
MAX
1
Unit
16.0
V
16.0-18.0
V
5.0
Min
-40
+70
-40
+90
11 Electric System
(2)THROTTLE VALVE ASSY:
JOIN THE AIR CLEANER AND ENGINE,CONTROL
THROTTLE VALVE OFF AND ON ANGLE THROUGH
THROTTLE CABLE. AIR DAMPER POSITION SNESOR
TRANSMIT ANGLE SIGNAL TO ECU.
Throttle Body Assy
Connected with
Connected with Air Filter
Engine
IACV
MAP Sensor
EACH PIN FUNTION:
3
1.CONNECT 5V POWER
2
2.GROUNDING
1
3.OUTPUT VOLTAGE SIGNAL
TPS
21
THE RIGHT DRAWING IS THE WIRING DIAGRAM WITH
ECU
3 2
ECU
10
DKG
20
TPS Wiring Diagram
IDLE SPEED LIMIT SCREW NOT ALLOWED
TO BE ADJUSTMENT.
ENGINE IDLE SPEED COMPLETELY DEPEND UPON
ELECTRONIC SPRAYING SYSTEM ADJUSTMENT.
DO NOT ADJUST THE IDLE SPEED SCREW.
Idle Speed Ajuster
1
(3)MAP Sensor:
1 2 3
MONITOR AIR PRESSURE IN MANIFOLD,PROVIDE ENGINE LOAD INFORMATION TO ECU.
EACH STITCH FUNCTION:
1.CONNECT 5V POWER
2.GROUNDING
MAP Sensor
3.OUTPUT VOLTAGE SIGNAL
21
1
3
2
19
THE RIGHT DRAWING IS THE CONNECTION DRAWING
FOR SENSOR&ECU.
P
U
10
MAP Sensor Wiring Diagram
THE RIGHT DRAWING IS THE PERMIT FITTING LIMIT,IN
THIS WAY CAN ENSURE THERE IS NO CONDENSED WATER INSIDE THE SENSOR,THE CONDENSED WATER CAN
DESTROY SENSOR INNER PRESSURE-SENSING DEVICE.
THE PICTURE BELOW IS THE RECIPROCAL DIAGRAM
DRAWING FOR PRESSURE AND OUTPUT VOLTAGE.
MONITOR PRESSURE RANGE:10-115kPa.
Allowed Range of Setting Angle
5
Output Voltage Uout in V
4.65
0.4
0
0
10
Absolute Pressure Pabs in Kpa
115
11 Electric System
(4)INTAKE AIR TEMPERATURE SENSOR(IAT
Sensor):
THIS SENSOR IS A NEGTIVE TEMPERATURE COEFFICIENT (NTC) THERMISTANCE,IT’S RESISTANCE VALUE
DECREASE WHEN THE COOLANT TEMPERATURE
INCREASE,BUT IT IS NOT LINEAR RELATION.THE SENSOR HAVE 2 PINS,AND THEY CAN BE EXCHANGED
USING.
IAT Sensor
ECU
21
THE RIGHT DRAWING IS THE WIRING DIAGRAM FOR
SNESOR&ECU.
6
1
2
IAT Sensor Wiring Diagram
10^4
THE RIGHT DRAWING IS FOR SENSOR TEMPERATURERESISTANCE PROPERTY LIST.
Resistance Value
10^3
10^2
10
-20 0 20 40 60 80 100 120 120
(5)WATER TEMPERATURE SENSOR:
THIS SENSOR IS A NEGTIVE TEMPERATURE COEFFICIENT (NTC) THERMISTANCE,IT’S RESISTANCE VALUE
DECREASE WHEN THE COOLANT TEMPERATURE
INCREASE,BUT IT IS NOT LINEAR RELATION.ONE
GROUP PROVIDE TO ECU,MONITOR ENGINE HEAT
CONDITION.THE OTHER GROUP PROVIDE TO THE
METER,MONITOR WATER TEMPERATURE.
Water Temp Sensor
A AND C IN ONE GROUP, THEY PROVIDE WATER TEMPERATURE TO ECU.
B ANDTHREADED PORTION IN ONE GROUP,THEY
PROVIDE WATER TEMPERATURE TO THE METER.
THE RIGHT DRAWING IS THE WIRING DRAWING FOR
SENSOR,ECU AND METER.
Connected with Meter
21
18
A
C
B
ECU
Connected with ECU
Temp Range
(
THE RIGHT DRAWING IS B END AND CRUST TEMPERATURE PROPERTY LIST,SIGNAL PASS TO THE METER.
Resistance( )
)
50
2
176-280
80
2
63.4-81.4
110
2
24.6-30.6
Temp Range
( )
THE RIGHT DRAWING IS END A,C AND THE TEMPERATURE PROPERTY LIST, SIGNAL PASS TO THE ECU.
B to Case End
-20
25
80
110
1
A,C to Case End
Resistance( )
13.71-16.94
1
1.825-2.155
1
0.303-0.326
1
0.1383-0.1451
11 Electric System
(6)OXYGEN SENSOR:
THIS SENSOR USED IN ELECTRONIC CONTROL FUEL
INJECTION EQUIPMENT FEEDBACK SYSTEM,TO REALIZE CLOSED-LOOP CONTROL,RAISE ECU CONTROL
THE AIR-FUEL DELIVERY RATIO.
IT INSTALLED IN THE EXHAUST-PIPE,MEASURING
WASTE GAS OXYGEN CONTENT,DEFINITE IF THE GAS
AND AIR COMPLETE BURNT,SO AS TO ENSURE UNIT
TRIPLET CATALYTIC CONVERTER HAVE MAXIMUM CONVERSION EFFICIENCY TO EXHAUST HC,CO AND NOX.
THE PINS FUNCTION:
1.CONNECT HEATING POSITIVE SOURCE(WHITE).
2. CONNECT HEATING NEGATIVE SOURCE(WHITE).
3.OUTCOMING SIGNAL NEGATIVE POLE(GRAY).
4.OUTCOMING SIGNAL POSITIVE POLE(BLACK).
ECU
4 3 2 1
THE RIGHT DRAWING IS THE WIRING DIAGRAM FOR
Fuel Pump Relay
21
SENSOR AND ECU.
24
Oxygen Sensor
THE BELOW SHEET IS THE SENSOR PERFORMANCE
CHARACTERISTIC VALUE.
New
Quantity
350
Performance Data Establish Exhaust Temp
Sensor Voltage(mv) When
=0.97
After 500Hours Bench Test
850
350
850
840
710
840
710
20
55
20
40
(CO=1%)
Sensor Voltage(MV) When
=1.10
(CO=1%)
Sensor Internal Resistance(
Response Time(ms)
(600mv-300mv)
Response Time(ms)
(300mv-600mv)
)
(7)TRIGGER:
PROVIDE ENGINE ROTATE SPEED INFORMATION TO
ECU,ECU DETERMINE IGNITION ANGLE,FUEL IN
JECTION ANGLE ACCORDING TO THIS INFORMATION.
Blue
Green
THE RIGHT DRAWING IS THE WIRING DIAGRAM FOR TRIGGER AND ECU.
12
13
TESTING THE THRIGGER RESISTANCE VALUE.
ECU
Blue
Green
Trigger
ADJUST MULTIMETER TO
TRIGGER WINDING RESISTANCE:100-130
IF THE TRIGGER RESISTANCE DONOT IN ABOVE
RANGE,REPLACE WITH A NEW ONE.
MEASURING TRIGGER PEAK VOLTAGE VALUE.
CONNECT MULTIMETER AND PEAK VOLTAGE
ADAPTER ACCORDING TO THE RIGHT DRAWING:
+PROBE GREEN LEAD WIRE
-PROBE: BLUE LEAD WIRE
Magneto
ATTENTION:
WHEN USE PEAK VOLTAGE ADAPTER,REFERS TO
OPERATION MANUAL.
Trigger Resistance
ADJUST MULTIMETER TO ALTERNATE V
ADJUST THE GEAR TO NEUTRAL,ADJUST IGNITION SWITCH TO”ON”.
Peak Voltage Tester
PRESS ON STARTING BUTTON AND LET THE EN
GINE RUNNING FOR FEW SECONDS,THEN START
TO MEASURE:
THRIIGER COIL PEAK VOLTAGE.
REPEATED TIMES MEASURE, GET THE HIGHEST
TRIGGER COIL PEAK VOLTAGE VALUE.;
TRIGGER COIL PEAK VOLTAGE: 2V 300rpm).
IF THE TRIGGER PEAK VOTAGE DONOT IN THE
ABOVE RANGE,REPLACE WITH A NEW ONE.
Magneto
Trigger Peak Voltage
11 Electric System
(8)ODOMETER SENSOR:
PROVIDE ENGINE OUTPUT SHAFT SPEED TO ECU,
ECU JUDGE VEHICLE SPEED ACCORDING TO THIS
INFORMATION.IT IS A KIND OF HALL SWITCH
COMPONENTS,IT OUTPUT SQUARE WAVE VIA INDUCTION FIELD.
PINS FUNTION:
1
2
3
1.GROUNDING
2.OUTPUT SQUARE WAVE VOLTAGE SIGNAL( IN
PUT POWER VOLTAGE 80%).
3.POWER+DC12V.
Odometer Sensor
+12V Power
ECU
THE RIGH IS THE WIRING DRAWING OF SENSOR AND
ECU.
Grounding 1 2
3
Hall Switch
3
Odometer Sensor Wiring Diagram
1
ODOMETER SENSOR TESTING
2
3
GROUNDING FOOT 1,CONNECT FOOT 3+12V.
FIXED ONE GEAR TO ODOMETER ACCORDING TO
THE RIGHT DIAGRAM DISTANCE(2.5mm).
ADJUST MULTIMETER TODCV.
ROTATE THE GEAR SLOWLY,MEASURE THE VOLT
AGE VALUE BETWEEN FOOT 2 AND FOOT 3 TO SEE
IF IT IS VARY FROM 0V,12V.
IF NO CHANGES, THEN THE SENSOR IS DAMAGED,
YOU WILL BE REQUIRED TO REPLACE WITH A NEW
ONE.
Gear
2.5
(9)GEAR SENSOR CLUSTER:
PROVIDE GEAR INFORMATION TO THE METER,SOAS TO
AT THE SAME TIME,COORDINATE WITH CABLE AS
STARTING PROTECTION.
FUNCTIONS OF THE FOOTS:
YELLOW/BLUE-L(UNDERDRIVE)
ORANGE/BLUE-H(HIGH POSITION)
YELLOW/BLACK-P(PARK POSITION)
WHITE/YELLOW-N(NEUTRAL POSITION)
WHEN EACH OF THE FOUR GEAR IN A CERTAIN
POSITION,GEAR CORRESPONDING FOOT CON
DUCT TO THE ENGINE COVER, OR ELSE IT NONCONDUCTION WITH THE ENGINE COVER.
Gear Sensor
A
(10)REVERSE GEAR ASSEMBLE:
PROVIDE GEAR REVERSE INFORMATION TO ECU
AND METER,THE ECU RESTRICT VEHICLE SPEED
ACCORDING TO THIS INFORMATION.
NORMALLY,A,B POINT CONDUCTION,DONOT CONDUCT WITH THE CASE.
NORMALLY, C LENGTH IS 3.5mm,IF C LENGTH
3mm,OR IF B SLIDE BLOCK,YOU HAVE TO
CHANGE IT TO A NEW ONE.
WHEN ENGINE BACK GEAR, A POINT NON-CON
DUCTION WITH THE ENGINE CASE, OR ELSE IT IS
CONDUCT WITH THE CASE.
C
B
11 Electric System
(11)FUEL PUMP ASSY:
1 2
THE OIL FUEL PUMP ASSY COMBINED OF FUEL PUMP,PLASTIC
BRACKET,PREFILTRATION,PRES SURE REGULATING VALVE.
IT DELIVER THE FUELTO THE ENGINE WITHACERTAIN OIL PRESSURE AND FLOW.
Spout
FUNCTIONS OF THE FOOT:
1.BLUE(GROUNDING)
2.RED(CONNECT THE OIL PUMP RELAY OUTPUT ENDING)
PERFORMANCEPARAMETER:
FLOW:35L/h
PRESSURE REGULATING VALVE OPENING PRESSURE:
THIS FUEL PUMP ASSY ALL USED INSIDE THE FUEL TANK:
DONOT RUN THE FUEL PUMP ASSY IN DRY;
HANDLE GENTLY, DONOT DROP THE FUEL PUMP
ASSY ONTO THE GROUND.
Fuel Pump Assy
THE RIGHT DIAGRAM IS THE WIRING DIAGRAM OF THE
OIL PUMP ASSY,OIL PUMP RELAY,ECU.
BATTERY SUPPLY POWER VIA FUEL PUMP RELAY,
Connected with ECU PIN 22
ELECTRIC OIL FUEL PUMP CIRCUIT CLOSE ONLY
WHEN STARTING AND THE ENGINE RUNNING.
MEASURING THE FUEL PRESSURE:
CONNECT FUEL PRESSURE GAUGE TO THE FUEL PUMP
FUEL DISCHARGE PORT,LOCK WITH CLAMP,ENSURE THERE
IS NO LEAKAGE IN CONNECT AREA:
LINK THE CIRCUIT ACCORDING TO THE ABOVE DIAGRAM;
TURN OFF THE IGNITION SWITCH,AND KILL SWITCH;
Fuel Pump Relay
AT THIS MOMENT,THE FUEL PUMP WILL WORKING FOR
Fuel Pump Assy
Kill Switch
5 SECONDS,WHEN IT STOP,THE FUEL PRESSURE SHALL
REACH THE AUTHORIZED PRESSURE,OR ELSE,REPLACE
THEENTIRE FUEL PUMP ASSY;
WHEN STOPED OPERATION,PRESSURE HOLDING AT LEAST
0.2MPa 5 MINUTES, IF NOT, REPLACE THE FUEL
PUMP ASSY.
OIL FUEL PIPE PRESSURE RELIEF:
BECAUSE OF THE HIGH PRESSURE OF FUEL SUPPLY,THE FUEL
PIPES ARE ALL HIGH PRESSURE RESISTANCE PIPE.EVEN IF
THE ENGINE DOES NOT WORK,THERE IS STILL HIGH PRES
SURE ON THE FUEL CHANNEL,THEREFOR,DONOT DISMANTLE
THE FUEL PIPE DURING SERVICING EASILY.
BEFORE SERVICE THE FUEL SYSTEM,YOU REQUIRED TO DO
FUEL PRESSURE RELIEF,THE METHOD IS AS BELOW:
REMOVE FUEL PUMP RELAY,START THE ENGINE AND RUN
ENGINE ON IDLE UNTILL THE ENGINE GO OUT IT SELF.
Battery Terminal
Ignition Switch
(12)FUEL INJECTOR:
FUEL INJECTOR ONE END INSTALLED IN SEAT,THE
OTHER END CONNECT WITH THE FUEL PIPE VIA
FUEL INJECTOR CAP.ACCORDING TO THE ECU
INSTRUCTION,IT SPRAY FUEL IN FIXED TIME.SO AS
Connected with Fuel Injector Cap
TO SUPPLY OIL TO THE ENGINE AND ATOMIZING.
THIS FUEL INJECTOR APPLY QUADRIPUNTAL,DO
NOT TURN AFTER FIXED THE CLAMP.
Mark ” +”
FUNCTION OF PINS:
ONE SIDE OF THE PLUG MARK+CONNECT FUEL
PUMP RELAY OUTPUT END,
WITHOUT MARK SIDE CONNECT ECU PIN 14.
OIL ATOMIZER RESISTANCE:
Connected with Fuel Injector Seat
Connected with Fuel Pump Relay
THE RIGHT IS THE WIRING DIAGRAM FOR FUEL INJECTOR AND ECU.
14
ECU
FUEL INJECTOR INSTALLATION:
INSTALL THE FUEL INJECTOR BY PUSHING IN
HAND.
WHEN DISASSEMBLE AND ASSEMBLING THE FUEL
INJECTOR,YOU MUST REPLACE THE O RING.
WHEN DISMANTLING FUEL INJECTOR, IF
NECESSARY,DO PRESSURE RELIEF IN ADVANCE.
CHECK FOR FUEL LEAKS AFTER INSTALLING.
Fuel Injector
11 Electric System
( 1 3 ) I D L E S P E E D C O N T R O L VA LV E
(CARBON TANK CONTROL VALVE):
Connected with Throttle Body
2
CONTROL PASS-BY AIR FLOW. ECU CONTROL THE
1
IDLE SPEED VALVE ACCORDING TO THE INFORMATION
OF ENGINE LOAD,THE ELECTRICAL PULSE DURATION
AND FREQUENCY:(DUTY RATIO).THE IDLE SPEED
VALVE HAS DIFFERENT AIR FLOW UNDER DIFFERENT
PRESSURE,SO IT MUST BE CONNECTED ACCORDING TO PRESCRIPTIVE METHOD,OR ELSE WILL
Airflow Direction
Connected with Air Filter
CAUSE INCORRECT IDLE SPEED,WHEN WITHOUT
ELECTRICAL PULSE,IDLE SPEED VALVE CLOSE.
FUNCTION OF PINS:
17
1.CONNECT PIN 17.
2.CONNECT OIL PUMPRELAY OUTLET END.
ECU
THE RIGHT IS THE WIRING DIAGRAM FOR IDLE SPEED
VALVE AND ECU.
Idle Air Control Valve
WHEN FIXING THE IDLE SPEED CONTROL VALVE,IT
CANNOT BE INSTALLED LIKE THE RIGHT DIAGRAM
(CONNECTOR VERTICALLY DOWNWARD) TO AVOID
DESTROY THE ELECTRONIC COMPONENT.
TO AVOID SOLID-BORNE SOUND TRANSMISSION,
YOU CAN INSTALL THE IDLE AIR CONTROL VALVE
SUSPENDED IN THE TUBE,OR USE RUBBER BOOT
TO FIX IT TO THE ENGINE OR THE FRAME.
Incorrect Installation
IDLE SPEED CONTROL VALVE PARAMETER LIST:
Quantity
Rated Voltage
Resistance at 20
Rated Current
Max
Value
Min
Typical
13.5
V
16
0.85
A
HZ
Pulse Control Frequency
Typical Pulse Control Width
Unit
8
ms
Pressure Difference =700mbar
Share Air Ration 100% Flow
5.00
/h
(14)IGNITION COIL:
IGNITION COIL CHANGE THE PRIMARY WIND
ING LOW VOLTAGE INTO SECONDARY WINDING HIGH
Connected with High Voltage Cable
VOLTAGE,THROUGH SPARK PLUG DISCHARGE TO
CREAT SPARK,FIRING THE FUEL AND GAS MIXTURE.
FUNCTION OF PINS:
1.GROUNDING.
2.CONNECT POWER+.
3.CONNECT ECU 1 POINT;
Ignition Coil
THE RIGHT IS THE CONNECTION CIRCUIT DIAGRAM OF
IGNITION COIL AND ECU.
Grounding
Positive Terminal
Primary
Secondary
ECU PIN 1
High Voltage Output
Ignition Coil Wiring
MEASURING SECONDARY IGNITION VOLTAGE:
V
CONNECT THE ENGINE ACCORDING TO THE ELEC
TRONIC-SPRAY ELEMENTARY DIAGRAM.
Peak Voltage Tester
CONNECT THE PEAK VOLTAGE GUAGE ACCORD
ING TO THE RIGHT DIAGRAM.
START THE ENGINE.
AFTER STARTS,THE SECONDARY IGNITION VOLT
AGE SHOULD BE
Battery
15000V.
ECU
Spark Plug
IGNITION COIL PARAMETER LIST:
Value
Quantity
MIN
Rated Voltage
Working Voltage
Resistance (20-25 )
Unit
Typical
MAX
V
14
16.5
6
Primary Winding
0.74
0.76
0.78
Secondary Winding
10.1
10.6
11.1
Primary Current
7
V
A
11 Electric System
ELECTRONIC FUEL INJECTION SYSTEM
FAULT SELF-DIAGNOSIS
ECU CONTINUOUSLY MONITOR THE SENSOR,ACTUATOR,RELEVENT CIRCUIT,TROUBLE LAMP,BATTERY VOLTAGE ETC,EVEN
THE ECU ITSELF.ALSO THE SENSOR OUTPUT,ACTUATOR DRIVING SIGNAL,INTERNAL SIGNAL(SUCHAS CLOSED-LOOP CONTROL
COOLANT TEMPERATURE,IDLING SPEED CONTROL,BATTERY VOLTAGE CONTROL ETC),DO THE RELIABILITY MEASUREMENT.
ONCE DISCOVER SOME WHERE BREAK DOWN,OR SOME SIGNAL VALVE UNTRUSTED,THE ECU WILL IMMEDIATELY SET UP FAULT
RECORD INFORMATION IN RAM TROUBLE MEMORY.THE FAULT INFORMATION STORE AS TROUBLE CODE,AND DISPLAY THE
FAULT IN IT’S EMERGENCE SEQUENCE. THE FAULT CANBE DIVIDED INTO TWO TYPES ¡°STEADY FAULT¡± AND RANDOM FAILURE
ACCORDING TO IT¡¯S EMERGENCE FREQUENCY(SUCH AS CAUSED BY BRIEF WIRE TURNOFF OR BAD CONNECTION OF THE
CONNECTOR.)
THROUGH DIAGNOSTIC EQUIPMENT AND THE TROUBLE LAMP YOU CAN FIND THE TROUBLE PART QUICKLY.
ELECTRONIC FUEL INJECTION SYSTEM FAULT DIAGNOSIS MAINLY APPLY TROUBLE LAMP AND DIAGNOSTIC
EQUIPMENT.
(1)TROUBLE LAMP(MILLAMP)
TROUBLE LAMP FIXED IN THE METER DESPLAY
BOARD,ADOPTING LED,BY MEANS OF DIFFERENT
FREQUENCY STAND FOR THE TROUBLE CODE.
THE RIGHT IS THE WIRING DIAGRAM FOR TROUBLE
LAMP AND ECU.CURRENT FLOW INTO ECU 4 PIN
SHOULD BE LESS THAN 0.5A.
TROUBLE LAMP BLINK PRINCIPLE:
Resistance
4
+12V Power
LED
26
ECU
a: IN BLINK CODE MODE,AND ALSO THE TROUBLE MEMOY
TROUBLE FREE:
IF ECU MONITOR THAT THE MIL LAMP IN BLINK CODE MODE,
THE TROUBLE LIGHT WILL FLICKER TO SHOW THE TROUBLE
CORRESPONDING Pcode CODE. SINCE IGNITE ECU,MIL WILL
CONTINUE BLINK 4 SECONDS,THEN HAVE A 1 SECOND SPAN,
MIL BLINK WITH 2 HZ FREQUENCY TO SAY TROUBLE FREE.
UNTILL START THE ENGINE,FIND OUT THE ROTATE SPEED.
b: IN CODE BLINK MODE,AND THE TROUBLE MEMORY
SHOWS AT FAULT.
IF ECU MONITOR THAT THE MIL LAMP IN CODE BLINK MODE,THE
TROUBLE LAMP WILL BLINK TO SHOW THAT THE TROUBLE
MEMORY CORRESPONDING Pcode CODE.SINCE IGNITE ECU
INITIALIZATION,MIL WILL LIGHT 4 SECONDS,THEN HAVE A 1
SECOND SPAN,MIL SHOW THE MEMORY TROUBLE CODE
THROUGH BLINK CODE Pcode.IF ALL THE TROUBLES ENTERED
THE MEMORY SHOWED BY MIL LAMP VIA BLINK CODE MODE,
MIL EXTINGUISH,UNTILL EXIT BLINK CODE MODE.
BLINK CODE MODE REQUIRES K LINE GROUNDING.
READ TROUBLE INFORMATION THROUGH THE BLINK CODE
THRN ON THE IGNITION SWITCH,K LINE GROUND AFTER 2.5
SECONDS,IF ECU TROUBLE MEMORY HAVE TROUBLE CODE,
AT THE MOMENT, ENGINE MIL TROUBLE LAMP OUTPUT P-CODE
VALUE.SUCH AS:P0203 BLINK MODE IS:BLINK 10 TIMES CONTINUOUSLY-INTERMISSION-BLINK 3 TIMES CONTINUED.
(2)DIAGNOSTIC EQUIPMENT:IT HAVE THREE PINS,
POWER,GROUNDWIRE AND DATA K LINE,CONNECT
WITH THE CORRESPONDING PINS IN ECU.
Left Button
Up Button
Right Button
THE RIGHT IS THE DIAGNOSTIC EQUIPMENT OPERATION
FUNCTIONS INDICATOR DIAGRAM.SPECIFIC OPERATION
AND IT’S FUNCTIONS PLEASE REFERS TO THE DIAGNOSTIC
EQUIPMENT OPERATING MANUAL.
PINS FUNCTIONS:
1.ECU 26PIN
Down Button
1 2 3
2.GROUNDWIRE
3.+12V POWER
Power
ESC
Enter
KEY-PRESS FUNCTIONS:
LEFT-HAND BUTTON:UPWARD TURN OVER.
UPPER KEY:MENU SELECTION,UPWARD ROLLING TEXT.
3
+12V Power
2
ECU 26 PIN
1
Grounding
RIGHT-HAND BUTTON:BACKWARD TURN OVER.
DOWN KEY:MENU SELECTION,DOWNWARD ROLLING TEXT.
CONFIRMATION KEY:ENTER OR START CURRENT OPERATION;
SELECT CURRENT MENU SELECTION;
ESC ESCAPE:CANCEL OR STOP CURRENT OPERATION;
RETURN TO PREVIOUS PAGE;
DIAGNOSTIC EQUIPMENT FUNCTION:
(1)EDITION INFORMATION DESPLAY:
ENGINE INFORMATION,ECU HARDWARE,ECU SOFTWARE.
(2)TROUBLE DISPLAY
INLET PRESSURE SENSOR,INTAKEAIR TEMPERATURE SENSOR,ENGINE TEMPERATURE SENSOR,THROTTLE POSITION SENSOR,
OXYGEN SENSOR,OXYGEN SENSOR HEATING CIRCUIT,AIR-FUEL DELIVERY RATIO,FUEL INJECTOR,FUEL PUMP RELAY,REVOLUTION SPEED SENSOR,VEHICLE SPEED SIGNAL,IDLING SPEED,IDLE AIR CONTROL,SYSTEM VOLTAGE,ECU,TROUBLE LAMP.
(3)ENGINE PARAMETER DISPLAY
BATTERY VOLTAGE,ENGINE SPEED,IDLE SPEED,VEHICLE SPEED,ENGINE TEMPERATURE,ENGINE TEMPERATURE SENSOR SIGNALVOLTAGE,INLET TEMPERATURE,INLETAIR TEMPERATURE SENSOR,INLET PRESSURE,AIR INPUT,MAGNETIC STEPPING MOTOR
TARGET LOCATION,THROTTLE POSITION SENSOR SIGNAL PRESSURE,THROTTLE OPENING,RELATIVE THROTTLE POSITION,CARBON TANK CONTROL VALVE DUTY RATIO,CHARGING TIME,FUEL SPOUT PILSE WIDTH,IGNITION ADVANCE ANGLE,OXYGEN SENSOR SHORT-TERM CORRECTION,OXYGEN SENSOR VOLTAGE,OXYGEN SENSOR LONG TERM CORRECTION,ENGINE RELATIVE
LOAD,CARBON TANK CONTROL RELATIVE FUEL DELIVERY,CARBON PURIFYING,CARBON LOAD,IDLING ACTUATOR TEV OPENING,
AMBIENT PRESSURE,ELEVATION CORRECTION FACTOR,OIL SPOUT PHASE,RUNTIME.
(4)ELECTRONIC FUEL INJECTION SYSTEM STATUS DISPLAY
IGNITION TERMINAL OPEN UP,MAIN RELAY OPERATION,OIL FUEL PUMP OPERATION,REACH IDLING ROTATE SPEED,REACH ENGINE WORK TEMPERATURE,VEHICLE RUNNING,IDLE SPEED WORKING CONDITION,FULL LOAD WORKING CONDITION,ACTIVE DECELERATE OIL REDUCTION,ACTIVATE ACCELERATION CROWDING,OIL SPOUT CLOSED-LOOP CONTROLACTIVATION,DECELERATION OIL-BREAK,lambda CONTROL ACTIVATE,MIXTURE GAS SELF-LEARNING ACTIVATION,TROUBLE LAMP STATE,MIL BLINK.
(5)ACTUATOR EXPERIMENT FUNCTION
TROUBLE LAMP,OIL FUEL PUMP,MAGNETIC STEPPING MOTOR,CARBON TANK CONTROL VALVE,IGNITION,FUEL SPOUT.
11 Electric System
TROUBLE CODE LIST:
REF
TR OUBLE C OD E
INSTR UCTION
1
P00 30
OXYGEN SEN SOR HEA TIN G C ON TROL C IR CU ITOPEN CIRC UIT
2
P00 31
OXYGEN SEN SOR HEA TIN G C ON TROL C IR CU ITSH ORT TO GOUN D
3
P00 32
OXYGEN SEN SOR HEA TIN G C ON TROL C IR CU ITSH ORT CIRC UIT TO POWER
4
P00 53
OXYGEN SEN SOR HEA TIN G INTER NAL RESISTAN CE UN RE ASONABL E
5
P01 05
IN LE T PR ESSU RE SEN SOR SIGN AL N O C HAN GE(ICE UP )
6
P01 06
IN LE T PR ESSU RE SEN SOR UN REAS ONABL E
7
P01 07
IN LE T PR ESSU RE SEN SOR SHOR T C IR CU IT TO GR OUN D
8
P01 08
IN LE T PR ESSU RE SEN SOR SHOR T C IR CU IT TO P OWER
9
P01 12
IN LE T AIR TEMPER ATUR E SENS OR SIGN AL VOLTAGE TOO L OW
10
P01 13
IN LE T AIR TEMPER ATUR E SENS OR SIGN AL VOLTAGE TOO H IGH
11
P01 16
ENIGNE C OOL AN T TEMPER ATUR E S ENSOR U NR EASONA BLE
12
P01 17
ENIGNE C OOL AN T TEMPER ATUR E S ENSOR C IR CU IT VOL TAGE TOO L OW
13
P01 18
ENIGNE C OOL AN T TEMPER ATUR E S ENSOR C IR CU IT VOL TAGE TOO H IGH
14
P01 22
THROTTLE POSITION S ENSOR CIRC UIT VOL TA GE U ND ER L IMINAL VAL UE
15
P01 23
THROTTLE POSITION S ENSOR CIRC UIT VOL TA GE EX CEED L IMIN AL VAL UE
16
P01 30
OXYGEN SEN SOR SIGNAL U NR EASONA BLE
17
P01 31
OXYGEN SEN SOR SIGNAL C IRCU IT VOL TA GETOO LOW
18
P01 32
OXYGEN SEN SOR SIGNAL C IRCU IT VOL TA GETOO HIGH
19
P01 34
OXYGEN SEN SOR CIR CUIT SIGN AL TROU BLE
20
P02 01
1 CY LIND ER OIL ATOMIZER C ONTROL CIRC UIT OPE N CIRC UIT
21
P02 61
1 CY LIND ER OIL ATOMIZER C ONTROL CIRC UIT S HORT CIRC UIT TO GOUN D
22
P02 62
1 CY LIND ER OIL ATOMIZER C ONTROL CIRC UIT S HORT CIRC UIT TO POWER
23
P03 21
TRAN SIE NT SPEED S IGNA L REFER ENC E POIN T TR OU BLE
24
P03 22
NO TRIGGE R(VEH ICL E S PEED) PU LSE SIGNAL (OPEN C IR CU IT OR SHOR T C IR CU IT)
25
P05 01
VEH IC LE SPEE D SEN SOR SIGN AL U NR EASONAB LE
26
P05 06
ID LE SP EED C ON TROL ROTATING SPEED LOWER THAN TAR GET IDL E SPEED
27
P05 07
ID LE SP EED C ON TROL ROTATING SPEED HIGH ER TH AN TARGET ID LE SP EED
28
P05 60
SYSTEM BATTER Y V OL TAGE SIGNA L UN REAS ON ABL E
29
P05 62
SYSTEM BATTER Y V OL TAGE TOO L OW
30
P05 63
SYSTEM BATTER Y V OL TAGE TOO HIGH
31
P06 02
ECU CODING TROU BLE
32
P06 27
OIL PUMP R ELAY C ONTROL C IR CU IT OPEN IN G
33
P06 28
OIL PUMP R ELAY C ONTROL C IR CU IT SH OR TCIRC UIT TO GROUN D
34
P06 29
OIL PUMP R ELAY C ONTROL C IR CU IT SH OR TCIRC UIT TO POWER
35
P06 50
MIL LAMP D RIVING STAGE TROUBL E
36
P21 77
AIR FUEL R ATIO CL OSED -LOOP CONTR OL SELF-L EARN IN G V ALU E EXCEE D UPP ER LIMIT
37
P21 78
AIR FUEL R ATIO CL OSED -LOOP CONTR OL SELF-L EARN IN G V ALU E UN DER L OWE R LIMIT
38
P11 17
ID LE AIR C ONTROL TEV SH ORT CIRC UIT TO GROUN D
39
P11 18
ID LE AIR C ONTROL TEV OPEN C IRCU IT
13 Lights,Instrument,Switches
Overhaul Info
Troubleshooting
Bulb replacement
Headlight
Ignition Switch
Handlebar Switch
Brake Light Switch
Horn
Dashboard
Fuel Sensor
WaterTemperature sensor
Overhaul Information
Operation instructions
Warning
Headlight bulb will be very hot when it is turned on. Do not touch it after it is just turned off. Operation
should be done when the bulb is cooled down.
Inspection of water temperature alarm may use heat source and liquid of high temperature. Do not put
flammable matters nearby and take care not to get burnt.
The temperature of headlight is quite high when turned on. Replacing with bare hand or stained glove
willcause oil stains on the glass face which may form hot spot and cause deformation of glass face and
damage to bulb.
Pay attention to the following when replacing the bulb.
Do not replace the bulb when it is turned on. Keep ignition switch in the OFF position, and replace after
the bulb is cooled down.
-Replace the bulb with hands in clean gloves to avoid oil stains on the glass surface.
-Clean the glass with a clean rag dipped in alcohol or isoamyl acetate in case of any oil stains on the glass
surface.
If the Inspection has to be done with battery, check if the battery is normal.
Inspection of switch continuity can be done without removing the switches from the vehicle.
After the inspecting and overhauling of each part, cables and wires should be routed properly (chapter 1)
Refer to Chapter 2 for removal and installation of taillight and rear turning lights
Check standard
F use
Li ght、 B ul b
It em
Mai n
S ub-fuse
He adl ight( Hi / Lo)
B rake li ght/ Ta il l ight
Turni ng li ght
Da shboard indi cat or
I ndi cat ors
S ta ndard
20A
10A×2 15A×2
12V- 35/ 35W
12V-21/ 5W
12V-10W ×4
φ 5 LED
LC D
13 Lights,Instrument,Switches
Replacing Bulb
Headlight Bulb
Headlight
Cautions
Headlight bulb will be very hot when it is turned on.
Do not touch it after it is just turned off.
Operation should be done when the bulb is cooled
down.
Remove headlight
(
)
Dust Cover
Disconnect headlight.
Remove dust-proof cap, headlight connector, circlip
and replace with a new bulb.
Warning:
Combined
Wear clean gloves when replacing bulb.
Oil stains on the glass surface may cause
break of bulb. Clean the stained surface with
alcohol or isoamyl acetate.
Make sure that the three pins of the bulb should
be in line with the three positioning holes in the
socket when replacing the bulb.
Connector
Circlip
Bulb specification:12V-35/35W
Reverse the removal procedure for installation
After replacing the bulb, adjust headlight beam
Headlight Connector&Bulb
Inspection of Headlight
Turn the ignition switch to ON position,
turn light switch to the illuminating
position and check if the headlight is on.
-ON: Normal
-Still off: short circuit of main cable or
broken main cable
13 Lights,Instrument,Switches
NOTE:
Main cable,wiring and tube should
be routed properly( chapter 1)
Dashboard Light Bulb
Remove dashboard
Remove dashboard indicator socket.
Dashboard indicator:LCD
Dashboard
Note: If dashboard has something wrong,
it’s recommended to replace whole dashboard.
Reverse the removal procedure for installation
Headlight Cable
Headlight
Nut
Remove nuts as picture shown
Disconnect headlight connector
Disassemble headlight comp.
Reverse the removal procedure for installation.
NOTE:
Be careful not to damage main cable when
assembling.
After replacing, adjust the headlight beam.
NOTE:
Main cables and wires should be routed
properly.
Headlight
13 Lights,Instrument,Switches
Check according to the following table if
the connector terminals are in continuity.
Continuity
ON
OFF
P
R BGB/W
Ignition Switch Connector
Lighting Switch
Disassemble:
Remove front cover
).
Disconnect 4P connector of ignition switch.
Loosen bolt and remove ignition switch.
Reverse the removal procedure for installation.
Starter Switch
Handlebar switch
Remove front cover( 2-4).
Disconnect left and right handlebar
switch connector.
Check according to the following table if
the connector terminals are in continuity.
Kill Switch
Continuity
BLK/BRN
BLK/WHT
BRN
GRN
BRN/WHT
BLK/BRN BLK/YEL
BLU
WHT/BLU
YEL
WHT
GRY/RED
Handlebar Switch Connector
13 Lights,Instrument,Switches
Disassemble
Disconnect horn connector.
Remove bolt.
Remove horn.
Bolt
Reverse the removal procedure for
installation.
Dashboard
Connector
Horn
Run the vehicle at low speed and check if
the speed indicator moves.
Faulty speedometer: Replace.
Bolt
Removal and Installation
Remove front top cover
Remove front cover of dashboard
Dashboard
Disconnect dashboard wire connector.
Remove fixing nut and remove dashboard in
the direction as illustrated on the right.
Reverse the removal procedure for
installation.
Note:
Main cables and wires shall be routed
properly.
Dashboard Connector
13 Lights,Instrument,Switches
Installation
Put fuel sensor into installation hole of fuel tank.
Fuel sensor should be fitted properly.
Check for fuel leakage after installation.
Connect 2P connector
Fuel Sensor Connector
Inspection of Fuel Gauge
Switch on power supply and check if fuel
level gauge functions normally.
If fuel gauge works normally,
Reverse the removal procedure for
installation of plastic parts and seat.
13 Troubleshooting
1. Engine troubleshooting..........................................................................................13-2
2. Diagnosis troubles according to EFI system Trouble Code.........................................13-5
3. Diagnosis troubles according to engine fault phenomena............................................13-14
1.Engine troubleshooting
Complaint
Symptom and Possible Causes
Remedy
Compression is Too Low
1.Worn cylinder
2.Worn piston ring
Replace
Replace
3.Leakage with cylinder gasket
4.Wear valve guide or improper valve seating
Replace
Repair or Replace
5.Loose spark plug
6.Slow cranking of starting motor
Tighten
Check electrical part
7.Faulty valve timing
8.Improper valve clearance
Adjust
Adjust
No Spark from Spark Plug
Engine will not start
or is hard to start
Engine stalls easily or
has unstable idle
speed
1. Fouled spark plug
2. Wet spark plug
Clean or Replace
Clean and dry or replace
3. Defective ignition coil
4. Open or short circuit with pickup coil
Replace
Replace
5. Faulty generator
Replace
1. Improper valve clearance
Adjust
2. Improper valve seating
3. Faulty valve guide
Replace or Correct
Replace
4. Worn rocker arm or rocker arm shaft
5. Fouled spark plug
Replace
Replace
6. Improper spark plug gap
7. Faulty ignition coil
Replace or Adjust
Replace
8. Clogged idle-vale inlet & exhaust pipe
9. Faulty magneto
Adjust Fuel level
Replace
13 Troubleshooting
Complaint
Poor engine
running in
high-speed
range.
Exhaust smoke
is dirty or thick
Engine lacks
power
Symptom and Possible Causes
1.
2.
3.
4.
5.
6.
7.
8.
1.
2.
3.
4.
5.
6.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
1.
2.
Engine
overheats
3.
4.
5.
6.
7.
Weak valve spring
Worn camshaft
Fouled spark plug
Insufficient spark plug gap
Improper valve timing
Faulty ignition coil
Weak high pressure fuel pump,
resulting in poor fuel supply
Dirty air filter
Excessive engine oil
Worn piston ring
Worn valve guide
Scored or scuffed cylinder wall
Worn valve stem
Worn valve stem oil seal
Improper valve clearance
Weak valve spring
Improper valve timing
Worn cylinder
Worn piston ring
Improper valve seating
Fouled spark plug
Improper spark plug gap
Clogged fuel injector
Dirty air filter
Worn rocker arm or rocker arm
shaft
Air leakage from air intake pipe
Excessive engine oil
Remedy
Replace
Replace
Clean or replace
Adjust or replace
Replace
Adjust
Adjust or replace
Clean or replace
Check oil level and drain
Replace
Replace
Replace
Replace
Replace
Adjust
Adjust
Adjust
Replace
Replace
Replace or Correct
Clean or replace
Clean or replace
Clean or replace
Adjust fuel level
Clean or replace
Replace
Tighten or replace
Check oil level and drain
Carbon deposit on piston top
Clean
Insufficient or excessive engine Check level, add or drain
oil
Faulty oil pump
Replace
Clogged oil passage
Clean
Air leakage from air intake pipe
Tighten or replace
Incorrect engine oil
Change engine oil
Faulty cooling system(7-5)
Complaint
Symptom and Possible Causes
Valve Chatter
1. Excessive valve clearance
2. Worn or broken valve spring
3. Worn rocker arm or camshaft
1.
2.
3.
4.
5.
Engine is
noisy
Adjust
Replace
Replace
Replace
Replace
Clean
Replace
Replace
Noise from Timing chain
1. Stretched chain
2. Worn sprocket wheel
3. Faulty chain tensioner
Replace chain & sprocket
Replace chain & sprocket
Repair or replace
Noise from Clutch
1. Worn or damaged crankshaft spline
2. Worn inner race spline
Replace crankshaft
Replace inner race
Noise from Crankshaft
1. Rattling bearing
2. Worn or burnt crank pin bearing
3. Excessive thrust clearance
Replace
Replace
Replace
Noise from CVT
1. Worn or slipping drive belt
2. Worn rollers in primary sheave
Replace
Replace
1.
2.
3.
4.
Slipping
Clutch
Noise from Piston
Worn piston
Worn cylinder
Carbon deposit in combustion chamber
Worn piston pin or pin hole
Worn piston ring or piston ring groove
Remedy
1.
2.
3.
4.
Noise from Transmission
Worn or damaged gear
Worn or damaged input or output shafts
Worn bearing
Worn bushing
Worn or damaged clutch shoes
Weakened clutch shoe spring
Worn clutch housing
Worn or slipping drive belt
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
13 Troubleshooting
2 Diagnosis troubles according to EFI system Trouble Code
NOTE:
1.
Only start inspection and fixation when trouble is steady-state; otherwise diagnosis
would probably be wrong.
2.
The “multimeter” mentioned below are numerical mutimeter; it is forbidden to use
pointer type multimeter to make EFI system inspecting.
3.
When Trouble Code tells “Low Voltage”, means probably it’s Short Circuit to Ground or
Broken Circuit; When Trouble Code tells “High Voltage”, means probably it’s Short Circuit
to Power; When Trouble Code tells “Circuit Error”, means Circuit Broken or Various Errors Exist.
Diagnosis Help :
1.
Trouble Code cannot be cleared, means trouble is steady-state; Focusing on the connector
wires’ possible looseness if trouble is incidental.
2.
When making inspections ,do not ignore possible affect from vehicle maintenance condition,
cylinder pressure, mechanism timing.
3.
If Trouble Code is cleared, it means defective on ECU; If Trouble Code is not cleared, put back
original ECU and repeat inspecting procedure to start again overhaul inspections.
Following are implications of EFI System Trouble Code,Diagnosis Measurements, Possible
Reasons and their Solutions as references.
Trouble Code: P0030 Oxygen Sens or Heating Control Circuit Broken
Note
Note
Possible Troubles are as below
Inspect as below
1)Circuit brok en between ECU Pin and Oxygen
1)Check if resistance between ECU Connector
Sensor Pin 2.
Pin and Oxygen Sensor Pin 2 is normal or not.
2)Circuit broken between Oxygen Sens or Pin 1
2)Check if resistance between Oxygen Sensor
and Main Relay.
Pin 1 and Main Relay is normal or not.
3)Circuit broken between Oxygen Sens or Pin 1
3)Check if resistance between Oxygen Sensor
and Pin 2.
Pin 1 and Pin 2 is normal or not.
Trouble Code: P0031 Oxygen Sens or Heating Circuit Short to Ground.
Note
Note
Possible Troubles are as below
Inspect as below
1)Circuit connect to ECU Pin are short-to-ground.
1)Check if resistance of ECU Pin to ground is
normal or not.
Trouble Code: P0032 Oxygen Sens or Heating Circuit Short to Power
Note
Note
Possible Troubles are as below
Inspect as below
1)Short Circuit between ECU Pin and Oxygen
1)Check if resis tance of ECU is normal or not.
Sensor Pin 1.
2)Check if res istance between ECU Pin and
2)Short Circuit between ECU Pin and other c ircuit.
Oxygen Sensor Pin 1 c ircuit is normal or not.
Trouble Code:P0053 Inner Resistanc e of Oxygen Sensor Heating not correct
Explanation: ECU system measure the Oxygen Sensor Heating Resistance to decide if heating output is
correct or not. In some conditions, Heated Oxygen Sensor would be damaged by precipitate, especially
while making c old start.
Note
Note
Possible Troubles are as below
Possible Troubles are as below
1 ) Oxygen Sens or Heatng function disable;
1) Check if resistance between Oxygen Sensor
Replac e Oxygen Sensor.
Pin 1 and Pin 2 is normal or not.
Trouble Code: Air Inlet Pressure Sensor no signal variable
Note
Note
Possible Troubles are as below
Possible Troubles are as below
1)Air Inlet Pressure Sensor frozen or jammed.
1)Re-install the Air Inlet Pressure Sensor after
2) Air Inlet Pressure Sensor seriously aging.
ice melted with indoor temperature.
13 Troubleshooting
Tro uble C ode:P0106 Air Inlet Pressure Sensor Sign al irration ally failure
Note
Possible Troubles are as below
1)Air leak age of Air Inlet Pres sure Sensor.
2)Air Inlet Pressure Sensor broken.
3)Air leak age from assemble point.
4 ) Air Inlet Pressure Sensor characteristically
defluxion.
Tro uble C ode:P0107 Low Voltage of Air Inlet Pressure Sensor C ircuit
Note
Note
Possible Troubles are as below
Inspect as below
1) ECU found Air Inlet Pressure Sensor signal
1) Resistance between EC U Pin and Ground.
circuit short to ground.
Tro uble C ode:P0108 High Voltage of Air In let Pressure Sensor Circuit
Note
Note
Possible Troubles are as below
Inspect as below
1) ECU found Air Inlet Pressure Sensor signal
1) Resistance of ECU Pin.
circuit short to power.
Tro uble C ode:P0112 Air Inlet Temperature Senso r Signal Voltag e Low.
Note
Note
Possible Troubles are as below
Inspect as below
1 ) C ircuit between ECU Pin and Air
Inlet
Temperature Sensor Signal short to ground.
1) Check R esistance of circuit between EC U
Pin Sensor Signal and Ground.
Tro uble C ode:P0113 Air Inlet Temperature Senso r Signal Voltag e High .
Note
Note
Possible Troubles are as below
Inspect as below
1 ) C ircuit between ECU Pin and Air
Inlet
Temperature Sensor Signal short to power.
1) Check if voltage of Sensor Signal of EC U
Pin is normal or not.
Tro uble C ode: Engine Water Temp erature Sensor Indicated Temp erature irration ally failure
Note
Possible Troubles are as below
1)Water Temperature Sensor need replacement
Tro uble C ode :P0117 Eng ine Water Te mperat ure Sen so r C ircuit Voltage lo w.
Note
Note
Possi bl e Tro ubles are as be low
Inspe ct a s below
1)Circui t betw een ECU Pi n and grou nd sho rt.
1)
Che ck resistan ce between ECU Pin
and Groun d.
Tro uble C ode :P0118 Eng ine Water Te mperat ure Sen so r C ircuit Voltage high.
Note
Note
Possi bl e Tro ubles are as be low
Inspe ct a s below
1)Short Ci rcuit between ECU c ircu it an d oth er
1)
Che ck if vo lta ge conn ected to ECU pin
is norma l o r not.
circui t.
Tro uble C ode :P0122 Voltage o f Throttle C ontro l Positioning Se nso r C ircuit lowe r tha n the
lowe r limit
Note
Note
Possi bl e Tro ubles are as be low
Inspe ct a s below
1) ECU Pin s hort to g ro un d.
1) Ch eck resista nce b etween EC U pin and
ground.
Tro uble C ode :P0123 Voltage o f Throttle C ontro l Positioning Se nso r C ircuit h ig her th an the
high er lim it
Note
Note
Possi bl e Tro ubles are as be low
Inspe ct a s below
1)Circuit between ECU Pin a nd othe r pow er ci rcu it
1) Che ck if EC U Pin voltage is norm al o r
short.
not.
Tro uble C ode :P0130 Ox ygen Sen so r Signa l irra tionally fa ilure
Expl anati on: W h en Oxygen Sensor Si gn al ha ppens w ith situ ati on s as b el ow, Syste m decide
Oxygen Senso r Si gnal irratio nally fail ure
Oxygen Sensor Sign al Circui t coupl ing with Heating Circ uit.
Note
Possi bl e Tro ubles are as be low
1)Che ck i f Oxyge n Sensor Con ne ctor i s corr ect or
not.
2)Check if Oxygen Se nsor Signa l Circ uit co up ling
with He ating Cir cuit.
Tro uble C ode :P0131 Ox ygen Sen so r C ircuit Volta ge Low
Note
Note
Possi bl e Tro ubles are as be low
Inspe ct a s below
1) Signal Circuit con ne cted wi th ECU Pin is short
1)Check resistance between Sig nal C ircu it
circui t to groun d.
connec te d w ith ECU Pin and gr ou nd.
13 Troubleshooting
Trouble Code:P0132 Oxygen Sensor C ircuit Vo ltage High
Explanation: W hen engine starts, ECU chec k the Oxygen Sensor Circuit Voltage; W hen voltage i s
continuously higher than 1.5 Volt, system dec ides Oxygen Sensor Circui t Voltage is short to power.
Note
Note
Pos sible Troubles are as below
Ins pect as below
1)Short C ircuit between Signal Circuit connect to
1 ) C heck resis tance between Signal C ircuit
ECU Pin and Oxygen Sensor Oxygen Sensor Pin
connect to ECU Pin and Oxygen Sensor Oxygen
1.
Sensor Pin 1
2)Short C ircuit between Signal Circuit connect to
2)Check resistance of Si gnal Circuit connect to
ECU Pin and other power cir cuit.
ECU Pin
Trouble Code:P0133 Oxygen Sensor Agin g
Explanation: Normally Air Fuel Ratio of Fuel and Air is shifting between Dense and D ilute; accordingly
Oxygen Sensor si gnal var iate among different values. W hen Oxygen Sensor is agi ng, it goes less
sens itive to Fuel-Air-Mi xture, which m akes signals var iate lower. EC U makes aver age cycle calculations
to Signal Vari ation; when it finds cycling slower as set, it decides Oxygen Sensor Aging.
Note
Pos sible Troubles are as below
1)Oxygen Sensor Agi ng, need replac em ent.
Trouble Code:P0134 Oxygen Sensor Signal Failure
Explanation:W hen engine starts, ECU check the Oxygen Sensor C ircuit Voltage; W hen ECU finds
voltage s tays between 0.4-0.6 volt, it decides Oxygen Sensor Signal Circuit Short.
Note
Note
Pos sible Troubles are as below
1 ) Short
Circuit
between
Ins pect as below
Oxygen
Sensor
connected to ECU Pin.
2 ) Bad
connection
1)C heck res istance between EC U c onnector
and Oxygen Sens or 4.
of
Oxygen
Sensor
Connectors.(Socket Oxidized)
Trouble Cod e: P0170 Self Studyin g fo und C losin g Loop control Air Fuel Ratio irrational when
making End o f Line Testin g.
Trouble C ode:P0171 Self Stud ying fo und Closing Loop control A ir Fu el Ratio too du late when
making End o f Line Testin g.
Trouble Code:P0172 Self Stud ying f ound Clo sing Lo op co ntrol Air Fuel R at io t oo dense when
making End o f Line Testin g.
(Note: This Inspec ti on Proces s is only suitabl e when Air Inlet Pressure Sens or, Canister Control Valve
and Oxygen Sensor and s o on has not shown w ith Trouble Code; If there is any other Trouble Code,
solve other Troubles fir st and then inspect Fuel Route correct or not)
Trouble Code:P0201 C ylinder Injector Con trol Circuit Open
Note
Note
Pos sible Troubles are as below
Ins pect as below
1) Injector Coil Open C ircuit
1) Check resistance of Injector
2) Injector C onnector Sock et to ECU Pin bad
2)Check cable is connected or not
connection
3) Injector Connector Socket to Main Relay bad
connection
Errors coding: P0261 Control circuit of single cylinder injector short to ground
Maintenance Tips:
The possible faults may exists as follow:
1)All drivers ECU pin connected short to
ground
Maintenance Tips:
Check the item as follow:
1)Measure ECU pin connected resistance
to ground
Errors coding: P0262 Control circuit of single cylinder injector short circuit
Maintenance Tips:
The possible faults may exists as follow:
1 ) Short circuit between circuit ECU
connected and other electrical source
circuits
Maintenance Tips:
Check the item as follow:
1)Measure the voltage of circuit ECU pin
connected
Errors coding: P0321 reference point of rotate speed sensor fault
Maintenance Tips:
The possible faults may exists as follow:
Maintenance Tips:
Check the items as follow:
1) Circuits connect intermittently short
circuit or intermittently open circuit.
1) Check the connection or breaking of
cable related connection.
2) Fixed position of crankshaft signal ring
deviation declination.
2) Check the
flywheel.
quantity
of
magneto
3) Fixed position of rotate speed sensor
declination.
Errors coding: P0322 Non-rotate speed sensor pulse signal (short circuit or open
circuit)
Explanation: After starting engine, ECU will measure signal of trigger and other signals
together, judging the losing of trigger signal by signal rationality system.
Maintenance Tips:
The possible faults may exists as follow:
1)Trigger rotate speed sensor ECU cable
connected open circuit
2 ) Trigger circuit ECU connected short
circuit.
3)Trigger coil open circuit.
Maintenance Tips:
1) Measure resistance between trigger
and ECU cable connected
2) Measure resistance of trigger
3) Measure trigger peak value voltage
Errors coding: P0444 Control circuit voltage of idle air control valve open circuit
Maintenance Tips:
The possible faults may exists as follow:
1 ) Open circuit between ECU circuit
connected and no.2 pin of idle air control
valve.
2)The circuit that no.1 pin of idle air control
valve connected to main relay open way.
3)Electromagnetism coil between no.1 pin
and no.2 pin open way.
Maintenance Tips:
1) Check the connection or breaking of
cable related connection.
2) Measure resistance of idle speed valve.
13 Troubleshooting
Errors coding: P0458 Control circuit voltage of idle air control valve too low
Maintenance Tips:
Maintenance Tips:Check the item as follow:
The possible faults may exists as follow:
1 ) Measure connected to the ECU pin-to-ground
1)Circuit ECU connected is short circuit
resistance whether proper or not
Errors coding: P0459 Control circuit voltage of idle air control valve too high
Maintenance Tips:
Maintenance Tips:
The possible faults may exists as follow:
Check the item as follow:
1)Short circuit between ECU circuit connected and
1)Measure the voltage of ECU pin whether
No.1 pin of idle air control valve.
2)Short circuit between circuit ECU pin connected
normal or not
2)Measure resistance between ECU pin and
and other electrical source circuits
No.1 pin of idle air control valve
Errors coding: P0501Speed sensor signal improper.
Explanation: When loose throttle and keep direct to free-wheel, ECU measure engine rotate speed and
vehicle speed together. If engine lasting higher speed but vehicle speed display “0” or too low obviously,
system will judge that vehicle speed signal faults.
Maintenance Tips:
Maintenance Tips:
The possible faults may exists as follow:
Check the item as follow:
1)The signal circuit ECU connected and vehicle
1) Check circuit resistance that connecter of
speed sensor short to ground or open to ground.
ECU joint to vehicle speed signal sensor.
2)Check resistance to ground of ECU pin.
Errors coding: P0506 Rotate speed of idle air control valve slower than target idle speed
Explanation: Engine rotate speed of idle speed control valve works by closed-loop control. And it
indicates fault if ECU performs idle speed controlling after a certain time, but the actual engine speed still
slower than target idle speed.
Maintenance Tips:
The possible faults may exists as follow:
1) Idle air control valve not work.
2) Check adjust bolt of throttle valve 、throttle
cable、throttle operating condition etc. whether
are in condition or not.
3)Too dirty inside of throttle valve body
Errors coding: P0507
Rotate speed of idle speed control valve faster than target idle speed
Introduction of theory and fault reason: Engine rotate speed of idle speed works by closed-loop control.
And it indicates fault if ECU performs idle speed controlling after a c ertain time, but the actual engine
speed faster than target idle speed.
Maintenance Tips:
The possible faults may exists as follow:
1)Check adjust bolt of throttle valve、throttle cable、
throttle operating condition etc. whether are in
condition or not.
2)Too dirty inside of throttle valve body
3 ) Check crankcase enforced-air flue whether
breaks off or leaks
Errors coding: P0560 Voltage signal of system battery illogicality
Errors coding: P0562 Voltage signal of system battery is too low
Errors coding: P0563 Voltage signal of system battery is too high
Maintenance Tips:
Maintenance Tips:
The possible faults may exists as follow:
Chec k the item as follow:
1)Magneto damaged and disable to starting or
1) Check the capability of generate electricity of
battery electric leakage
Magneto(measure
2)Magneto stator coil open circuit
starting)
voltage
of
Magneto
after
3)Regulator of Magneto damaged
Errors coding: P0627 Control circuit of oil pump relay open circuit
Errors coding: P0628 Control circuit of oil pump relay short to ground
Errors coding: P0629 Control circuit of oil pump relay short circuit
Maintenance Tips:
Maintenance Tips:
The possible faults may exists as follow:
Chec k the items as follow:
1 ) Open circuit/short to ground/short circuit
1) Measure resistance or voltage of oil pump relay
between
control circuit
of
oil pump
relay
connected to ECU and oil pump.
2)Open circuit between relay and main relay
control circuit c onnected to ECU.
2) resistance between relay and main relay
3) resistance between the toes of relay
3)Magnet coil of relay open circ uit
Errors coding: P0650 MIL lamp-driver circuit fault
Maintenance Tips:
Maintenance Tips:
The possible faults may exists as follow:
Check the item as follow:
1)Open circuit/short to ground/short circuit on circ uit of
1 ) Measure resis tance or voltage of MIL
MIL lamp-driver connec ted to ECU.
lamp-driver control circuit c onnected to ECU.
2)Open circuit between MIL and main relay.
3)MIL lamp burnout
13 Troubleshooting
Erro rs coding : P2177
Self-learning value of air-fuel ratio, closed-loop control exceeds upper limit
Erro rs coding : P2178
Self-learning value of air-fuel ratio, closed-loop control exceeds lower lim it
Introduction of theory and fault reason: In order to make catalytic converters for HC , CO and
NOx to m aximize conversion efficiency, the air-fuel ratio of m ixture should be 14.7:1. When
the engine occurs, parts manufacturing deviation, deposition of fuel c olloid on fuel injector,
intake or back of valve, gas leak of intake and exhaust system, will cause the air-fuel
ratio(14.7:1) deviation in various degrees(partial dilute or partial c oncentration) which
will lead to emission deterioration and poor engine performance. Engine control sys tem
will amend and self-learning fuel charge based on the extent and characteris tics of air-fuel
ratio deviation.
When self-learning value reach the limit of sys tem setting (gas mixture
partial dilute or partial concentration, system amends the fuel charge constantly till Max),
system will judge that self-learning value transfinite fault.
Maintenance Tips:
The possible faults m ay exists as follow:
1)Injector clog needs cleaning
2)Intak e and exhaus t system leak s
3)Inlet or back of intake valve has c arbon build-up, needs to be decarbonized.
4)Engine parts deviation
5)Valve clearanc e deviation
6)Fuel sys tem pressure deviation
3 .Diag nos is troub les ac c ording to e ngine fault phe nome na
Be for e sta rt to d ia gn o sis fau lt, ple a se ta ke th e p rim ar y ins pe ctio n fir st:
1 .Eng ine fai lu re i nd icator l ig ht wo rks r eg ul ar ly.
2.Affirm that no er ro rs Co de h ave be e n fo un d by Diagno sis Analyze.
3 .Affirm the fau lt th a t use r comp la int is e xist, and a ffirm th e co n d ition o f fa ul t hap p ene d.
Th en , take extern a l inspe ction:
(1) Chec k fuel pipe fo r has fu el l ea ks.
(2) Chec k va cu um tu b e i f r up tur e, kink or i nco rr ect co n ne ction.
(3) Chec k air i nta ke p ip e w he the r cl og ge d , l ea ke d, b een sta ved o r da ma ged o r no t.
(4) Chec k ign itio n c oil of ig nition syste m wh e the r ru ptu re , ag e d o r n ot, firi ng se quen ce wh ether
corre ct or n o t;
(5) Chec k gro u nd of wi rin g h a rn ess m ake su re i t’s c lean an d tig h t.
(6) Chec k c on ne ctio ns fo r lo o se o r po o r conta cts or n ot.
No tice :Ple as e ma in tain th e fa ul ts a s a bo ve i n ad va nce . If no t, the fur the r fa ult d ia gno sis will b e a ffe cted .
Diagnos is h elp:
1.Engin e ha s no fau lt reco rd s;
2.Affirm th e c om pla in t of fau lt ha p pen ed;
3.Do no t ign or e veh icl e ma inte n an ce wo rki ng , cyli nd er p re ssu re , me ch an ism tim in g, fu e l etc
e ffect ag ains t syste m d ur in g o ver ha u l
4.Rep la ce ECU an d te st i t.
If Tr ou b le C od e is clear ed , i t m ea n s de fective on E CU;
If T roub le Co de is n o t cle ar ed, pu t back o ri gin a l E CU an d r epe at insp ec ting p roced u re to sta rt
a gain overh a ul insp e cti on s.
Trouble sh ooting:
z
Starti ng Fai lu re /H ar d Star ting.
z
En gin e can r otate b ut wi ll not star t.
z
Ha rd Starti ng when hot.
z
Ha rd Starti ng when col d.
z
Ha rd Starti ng all the ti me .
z
En gin e work s regu la rly,b u t u n stea d y i dl e sp ee d a ll th e tim e.
z
En gin e work s regu la rly,b u t u n stea d y i dl e sp ee d w he n e n gi ne is in warmi ng -up.
z
En gin e startin g n or mally, b u t id le spe e d uns te ady a fter wa rm in g- up.
z
En gin e startin g n or mally, b u t u nstea dy idle spee d o r powe r o ff whe n i dles.
z
En gin e startin g r eg ul ar ly, bu t id le sp e ed is too high .
z
Ro ta te spe ed can n ot in cre ase o r en g in e p ow er o ff wh e n i n a cce ler a ti on.
z
Re ac ti on slo wly wh en in acc ele ra tio n.
z
No po we r a nd po o r per fo rm an ce whe n in a ccele ra ti on
13 Troubleshooting
( 1) Starting Failure/H ard Starting
Possible defective part : 1.Battery ; 2.Starter motor; 3.Wiring harness or ignition switch;4.engine
mechanism part.
Overhaul:
Ref
Operation
Test result
Next Steps
C heck the voltage between the two poles of battery by
yes
next
no
Replace battery
yes
next
No.
1
multimeter, the voltage whether around 8-12V or not
w hen engine starting.
Keep ignition sw itch in engine starting station. Check
2
positive pole of Starter motor by multimeter, the voltage
w hether above 8V or not.
R emove starter motor and check its working condition, if
3
c ircuit break or starter motor locked because of
improper lubric ate.
yes
no
F ault only happens on winter, please check lubricating
4
no
oil if is improper for engine which caused high
resistance of starter motor.
Repair or replace
wiring harness
Repair or replace
Starter Motor
next
Replace appropriate
yes
grade of lubricating
oil
no
next
Overhaul
C heck the resistance inside of engine mechanism
5
yes
w hether is high or not, which makes starter motor stop
rotates or rotate slowly.
the
resistance inside of
engine mechanis m
no
Repeat above steps
( 2) En gine can ro tate bu t starting failure
Possible defective part:1、no gasoline in tank;2、F uel pump;3、Trigger;4、Ignition coil;5、engine
mechanism part.
Overhaul:
Ref
Operation
Test result
Next Steps
No.
Contact fuel pressure meter(contact front point of
1
oil
input pipe of injector),open ignition switch and repeat it if
possible, or starting engine, check the fuel pressure
whether is around 300kPa or not
Contact Electronic injection diagnostic meter, observe
2
item of “engine rotate speed”, starting engine, and
observe the rotate speed signal if is normally output.
Pull out ignition coil, and contact with spark plug, keep
3
yes
no
Yes
examine and repair
oil support sys tem
next
examine and repair
no
sensor
wiring
of
rotate s peed
yes
pole of spark plug 5mm with body of engine, starting
engine and check it whether has blue-white high spark .
next
no
next
Examine and repair
ignition system.
C heck compressio n o f cylin der a nd obs erve th e pre ssure i f is
4
disc re pa ntl y.
C ontact EFI comm uta tor, open ig ni ti on swi tc h, chec k ECU5#、
5
El im inate
yes
no
ne xt
yes
Diag nosis hel p
10 #、 13 # stitch, th e po we r whe the r sup ply n or ma lly or no t,
Exam in e and re pa ir
no
ch eck 2#、21# stitch w hether Pu t u p i ron o r n ot.
engin e
mechan ism fa ul t
re levan t wiri ng
(3 )H ard Sta rting in normal sta tus
Po ssible de fective p art:1、fuel co ntain ing wa ter;2、fu el p um p;3、e ng ine wa te r te mp eratu re sen so r;
4、ign itio n coil
Overh aul :
Re f no
Ope ratio n
Co nta ct fue l press ure me ter (co nta ct front po int of
1
Te st res ult
N ex t S te ps
yes
ne xt
o il in pu t
exami ne
pip e of i nj ecto r), s tarting e ngine, ch eck the fuel pressure
wh eth er is a ro und 300k Pa or no t
no
an d
re pair
o il
supp ort
system
Pul l out ign itio n coi l, an d co ntac t with s pa rk plug , keep pole
2
yes
of spark plu g 5m m with b ody of eng ine , starting engin e and
chec k i t whe ther has b lue-wh ite high pre ssure fi re or n ot.
ne xt
Exami ne
no
re pair
an d
ign itio n
system .
Exami ne and
Pul l o ut co nn ector of e ng ine wate r temperature sens or,
sta rtin g engi ne , o bserve e ngi ne whethe r succeed s tartin g or
3
not at th is mo me nt. (o r in s eri es a 300Ω re sistant instea d o f
eng in e water temperature sens or, o bserve eng ine whether
succe ed sta rtin g or n ot at this m om en t.)
4
Ch eck fu el and obse rve th e faul t i f ca used after fue ling
Co nta ct
5
Yes
EFI c om mu tator,
open i gn itio n s witch, ch eck
or replace
sen so r
No
Next
No
Next
yes
Repla ce fu el
no
ne xt
yes
Diagn osis help
ECU5 #、10#、1 3# s ti tc h the po we r wheth er sup ply no rm all y
or n ot, check 2 #、21 # stitch wh eth er P u t u p i ro n o r n ot.
repair w iri ng
Exami ne
no
an d
re pair r ele va nt
wiri ng
(4 )H ard Sta rting in co ld sta tus
Po ssible de fective p art:1、fuel co ntain ing wa ter;2、fu el p um p;3、e ng ine wa te r te mp eratu re sen so r;
4、inje ctor;5、ignitio n coil;6、thr ottle val ve bod y a nd id le speed si de a ir duc t; 7、e ngi ne m ech ani sm part 。
Overh aul :
13 Troubleshooting
Ref no
1
2
Operation
Test result
Contact fuel pressure meter(contact front point of oil input
yes
pipe of injector), starting engine, check the fuel pressure
whether is around 300kPa or not
no
Pull out ignition coil, and contact with spark plug, keep pole
yes
of spark plug 5mm away of body of engine, starting engine
and check it whether has blue-white spark fire or not.
no
Pull out connector of engine water temperature sensor,
starting engine, observe engine whether succeed starting or
3
succeed starting or not at this moment.)
next
examine and repair
oil support system
next
Examine and repair
ignition system.
Examine and repair
Yes
not at this moment. (or in series a 2500Ωresistant instead of
engine water temperature sensor, observe engine whether
Next Steps
wiring or replace
sensor
no
next
Clean throttle valve
4
Draw accelerograph gently, observe it whether starting
engine easily or not.
washing analysis instrument if exists the phenomena of
leaks or clogs
6
7
Check fuel and observe the fault if caused after fueling
Check compression of cylinder and observe the pressure if it
is discrepantly.
Contact EFI commutator, open ignition switch, check
8
body and idle speed
air duct
Disassembly injector, and check the injector by special
5
yes
no
next
yes
Replace
no
next
yes
Replace fuel
no
next
yes
Eliminate
engine
mechanism fault
no
next
yes
Diagnosis help
ECU5#、10#、13# stitch, the power whether supply normally
or not, check 2#、21# stitch whether Put up iron or not.
no
Examine and repair
relevant wiring
(5)Regularly rotate speed, but engine starting hard at any time
Possible defective part:1、fuel containing water;2、fuel pump;3、engine water temperature sensor;
4、injector;5、ignition coil;6、throttle valve body and idle speed side air duct; 7、input air duct;8、ignition
timing;9、spark plug;10、engine mechanism part
Overhaul::
Operation
Test result
Check air cleaner and input air duct whether are clogged or
yes
Ref no
1
not
no
Next Steps
Examine and repair
air input system
next
Co n ta ct fu e l pr essu r e me ter (co n ta ct fr on t po in t o f
2
oi l in pu t
ye s
p ip e of i nje cto r), s ta rtin g en g in e, ch e ck th e fu e l p re ssu re
3
exa mi ne a n d re pa ir
wh eth e r is a ro un d 3 0 0k Pa or no t
no
P ul l ou t ig n itio n coi l, a n d con tac t with sp a rk plu g , ke ep po le
ye s
oi l sup p or t syste m
o f sp a rk pl ug 5m m a wa y w ith b o dy o f e n gin e , s ta rtin g e n gin e
4
ne xt
ne xt
exa mi ne a n d re pa ir
a nd che ck it wh e the r h as b lue -wh ite hi gh p re ssu re fi re o r no t.
no
Ch e ck sp a rk pl ug , l oo k i ts typ e a nd g a p if acco rd s with
ye s
ne xt
stan d ar d.
no
Ad ju st or re pla ce
ig ni ti on system
E xa m in e an d re pa ir
P ul l o u t co nn e cto r o f e ng in e wa te r tem p er atu re se ns or,
5
star tin g e n gi ne , o bse rve e n gin e wh eth e r su cce ed sta rtin g or
n ot a t th is mo me n t.
ye s
wiri ng
or
r ep la ce
sen so r
no
ne xt
Cle a n th ro ttl e val ve
Dr aw a cce le rog ra p h ge n tl y, o b ser ve it wh e th e r sta rtin g
6
ye s
ai r du ct
e ng in e e a sily o r n ot.
Di sass em bl y in je ctor, an d ch e ck the i nj ecto r by sp ec ial
7
wa sh in g a n al ysis i nstr um en t if e xists th e ph e no me na o f
le a ks or cl og s
8
Ch e ck fu e l an d ob se rve th e fa ul t i f ca u sed after fue lin g
Ch e ck co m pr essi on o f c ylin de r a nd o b ser ve the pr ess ure if i s
9
d iscre p an tly.
10
Ch e ck en gi ne ig ni ti on timi ng if a cco rd s with sta n da rd .
Co n ta ct
11
E FI co m mu ta tor,
bo d y an d id le spe e d
op e n
i gn itio n
s witch,
no
ne xt
ye s
re pl ace
no
ne xt
ye s
Re pl ace fue l
no
ne xt
ye s
e ng in e
me cha n ism fa ul t
no
ne xt
ye s
ne xt
exa mi ne a n d re pa ir
no
ch e ck
El imi na te
ig ni ti on timi ng
ye s
Dia g no sis h el p
E CU5 # 、1 0# 、1 3 # stitch the po we r whe th er su p pl y n o rma l or
n ot, ch eck 2 #、 21 # stitch wh eth er P u t u p i r o n o r n o t.
no
E xa m in e an d re pa ir
re le van t wir ing
( 6) E ng in e w ork s re gula rly, bu t uns te ad y idle s pe e d a t a ny t im e
P o ssib le d e fe ctive p a rt:1 、fu el co nta in ing wa te r; 2 、in je ctor ; 3 、sp ar k p lu g ;4 、thr o ttle va lve bo d y a n d
i dl e spe e d sid e a ir d uct;5、in p ut air d u ct;6 、id le sp ee d va lve ; 7 、i gn itio n tim in g;8 、e n gin e m ech a ni sm
p a rt
O ve rh a ul :
Re f no
1
O pe ra tio n
Tes t re s ult
Ch eck ai r cl ea ne r an d in pu t a ir du ct
yes
whe th er a r e clo g ge d o r n ot
no
N ex t S te ps
E xa m in e an d re pa ir a ir
in pu t system
n ext
13 Troubleshooting
2
3
4
5
Yes
Clean or replace
no
next
Check spark plug, look its type and gap if accords with
Yes
next
standard.
no
Adjust or replace
Check throttle valve body and idle speed side air duct
Yes
Clean
whether have carbide ac cumulated or not.
no
next
Disass embly injector, and check the injector by spec ial
Yes
Fault replacement
no
next
Yes
Replace fuel
no
next
Check idle speed valve whether clogged or not.
washing analysis instrument if exists the phenomena of
leaks, clogs or flux discrepantly.
6
7
8
Check fuel and observe the fault if caused after fueling
Check compression of c ylinder and observe the press ure if is
discrepantly.
Check engine ignition timing if accords with standard.
Contact EFI commutator, open ignition s witch, check
9
yes
Eliminate
mechanism fault
no
next
yes
next
no
yes
engine
examine and repair
ignition timing
Diagnosis help
ECU5#、10#、13# stitch, the power whether supply normal or
not, check 2#、 21# stitch whether Put up iron or not.
no
Examine and repair
relevant wiring
( 7)Engine works regularly, but unsteady idle speed when engine is in warming-up
Possible defective part:1、fuel containing water 2、engine water temperature sensor;3、spark plug;
4、throttle valve body and idle speed side air duc t; 5、input air duct;6、idle speed valve;7、engine
mechanism part
Overhaul::
Ref no
1
2
3
Operation
Test result
Check air cleaner and input air duc t whether are clogged
yes
or not
air input system
next
Check spark plug, look its type and gap if acc ords with
yes
next
s tandard.
no
Adjust or replace
Disassembly idle speed valve and check the throttle valve
yes
Clean related parts
no
next
body, idle s peed valve and idle speed side air duct
Pull out connec tor of engine water temperature sensor,
s tarting engine, observe idle speed whether is unsteady
or not when engine is in warming-up.
Disassembly injector, and c heck the injector by spec ial
5
Examine and repair
no
whether have carbide accumulated or not.
4
Next Steps
washing analysis instrument if exists the phenomena of
leaks, clogs or flux dis crepantly.
Examine and repair
yes
wiring
or
replac e
sensor
no
next
yes
Fault replac ement
no
next
6
7
Check fuel and observe the fault if caused after fueling
Check compression of cylinder and observe the pressure.
Contact EFI commutator, open ignition switch, check
8
Yes
Replace fuel
no
next
yes
Eliminate
engine
mechanism fault
no
next
yes
Diagnosis help
ECU5#、10#、23# stitch, the power whether supply normal or
not, check 2#、21# stitch whether Put up iron or not.
Examine and repair
no
relevant wiring
(8)Engine starting normally, but idle speed unsteady after warming-up.
Possible defective part:1、fuel containing water 2、engine water temperature sensor;3、spark plug;
4、throttle valve body and idle speed side air duct; 5、input air duct;6、idle speed valve;7、engine
mechanism part
Overhaul:
Ref no
1
2
3
Operation
Check air cleaner and input air duct whether are clogged or not
Test result
yes
Next Steps
Examine and repair
air input system
no
next
Check spark plug, look its type and gap if accords with
yes
next
standard.
no
Adjust or replace
Disassembly idle speed valve and check the throttle valve
yes
Clean related parts
no
next
body, idle speed valve and idle speed side air duct whether
have carbide accumulated or not.
Examine and repair
Pull out connector of engine water temperature sensor, starting
4
engine, observe idle speed whether is unsteady or not when
engine is in warming-up.
Disassembly injector, and check the injector by special washing
5
analysis instrument if exists the phenomena of leaks, clogs or
flux discrepantly.
6
7
Check fuel and observe the fault if caused after fueling
Check compression of cylinder and observe the pressure if it is
discrepantly.
Contact EFI commutator, open ignition switch, check ECU5#、
8
yes
wiring
or
replace
sensor
no
next
yes
Fault replacement
no
next
Yes
Replace fuel
no
next
yes
Eliminate
engine
mechanism fault
no
next
yes
Diagnosis help
10#、23# stitch, the power whether supply normal or not, check
2#、21# stitch whether Put up iron or no t.
no
Examine and repair
relevant wiring
(9)Engine starting normally, but unsteady idle speed or power off when engine
loading(such as: opening head light)
in partly
13 Troubleshooting
Possible defective part:1、idle speed valve;2、injector
Overhaul:
Ref no
Operation
Disassembly idle speed valve and check the throttle valve
1
Test result
yes
body, idle speed valve and idle speed side air duct whether
have carbide accumulated or not.
Next Steps
Clean
related
parts
no
next
yes
Turn step no.4
no
next
no
Examine
Observe output power whether is increasing or not when begin
2
loading work, namely observe the movement of ignition
advance angle、injection pulse width and air intake flowrate by
EFI diagnosis instrument
and
repair air condition
system
Disassembly injector, and check the injector by special
3
washing analysis instrument if exists the phenomena of leaks,
clogs or flux discrepantly.
Contact EFI commutator, open ignition switch, check ECU5#、
4
yes
Fault replacement
no
next
yes
Diagnosis help
10#、23# stitch, the power whether supply normal or not, check
2#、21# stitch whether is puting up iron or not .
Examine
no
repair
and
relevant
wiring
(10)Engine starting regularly, but idle speed is too high.
Possible defective part:1、throttle valve body and idle speed side air duct; 2、injector seat;3、idle speed
valve;4、engine water temperature sensor;5、ignition timing.
Overhaul:
Ref no
1
2
Operation
Check the throttle cable if is clipped or too tight.
Check air intake system and connector of injector seat, the air
if is leaking.
Disassembly idle speed valve and check the throttle valve
3
body, idle speed valve and idle speed side air duct whether
have carbide accumulated or not.
Pull out connector of engine water temperature sensor,
4
Check engine ignition timing if accords with standard.
Next Steps
yes
adjust
no
next
yes
Examine and repair
air intake system
no
next
yes
Clean related parts
no
next
Examine and repair
yes
starting engine, observe idle speed whether is unsteady or
not when engine is in warming-up.
5
Test result
wiring
or
replace
sensor
no
next
yes
next
no
examine and repair
ignition timing
yes
C ontact with EFI comm utator, open ignition switch, check
6
Diagnosis help
ECU 5#、10#、23# s titch, the power whether supply norm al or not,
check 2#、21# stitch w hether is puting up iron or not.
no
Exam ine and repair
relevant wiring
( 11) Rotate speed can not increase o r engine power off when in acceleration.
Possible defective part:1、fuel containing water; 2、air intake pres sure s ensor and throttle pos ition
sensor;3、spark plug;4、throttle valve body and idle speed side air duct;5、input air duct;6、idle
speed valve;7、fuel injector;8、ignition tim ing; 9、m uffler
Overhaul:
R ef no
Operation
Test result
yes
1
C heck air cleaner if is clogged.
C ontact fuel pressure m eter(c ontact front point of
2
3
4
oil
Exam ine and repair
air input system
no
next
yes
next
input pipe of injector), starting engine, check the fuel
examine and repair
pressure whether is around 300kPa or not
no
C heck s park plug, look its type and gap if accords with
yes
next
standard.
no
Adjust or replace
D isassem bly idle speed valve and check the throttle valve
yes
Clean related parts
no
next
yes
next
body, idle speed valve and idle s peed side air duct
whether have carbide accumulated or not.
5
N ext Steps
C heck air intake pres sure sensor、 throttle position sens or
and their wiring whether works regularly or not.
oil support system
examine and repair
no
wiring or replace
sensor
D isassem bly injector, and check the injector by special
6
washing analysis instrument if exists the phenom ena of
leaks, clogs or flux disc repantly.
7
8
C heck fuel and observe the fault if caused after fueling
yes
Fault replacem ent
no
next
Yes
no
next
yes
next
C heck engine ignition tim ing if ac cords with standard.
no
yes
9
C heck the exhaus t gas from m uffler if exhaus ts sm oothly
no
C ontact w ith EF I com mutator, open ignition switch, check
10
ECU 5#、10#、23# s titch, the pow er whether supply norm al
yes
or not, check 2#、21# stitch whether is puting up iron or
not.
Replace fuel
no
examine and repair
ignition timing
next
Repair
or
replace
muffler
Diagnosis help
Exam ine and repair
relevant wiring
13 Troubleshooting
( 12)Reaction slowly when in acceleration.
Possible defective part:1、fuel containing water; 2、air intake pres sure s ensor and throttle pos ition
sensor;3、spark plug;4、throttle valve body and idle speed side air duct;5、input air duct;6、idle s peed
valve;7、fuel injector;8、ignition timing;9、muffler
Overhaul:
Ref no
Operation
Test resu lt
yes
1
Check air cleaner if is clogged.
Contact fuel pressure meter(contact front point of
2
3
4
oil
Examine and repair
air input system
no
next
yes
next
input pipe of injector), starting engine, check the fuel
examine and repair oil
pressure whether is around 300kPa or not
no
Check spark plug, look its type and gap if accords with
yes
next
standard.
no
Adjust or replace
Disassembly idle speed valve and check the throttle
yes
Clean related parts
no
next
yes
next
valve body, idle speed valve and idle speed s ide air
duct whether have carbide accumulated or not.
5
Next Steps
Check air intake pressure sensor、 throttle position
sensor and their wiring whether works regularly or not.
support s ystem
examine and repair
no
wiring
or
replace
sensor
Disassembly injector, and check the injector by special
6
washing analysis instrument if exists the phenomena
of leaks, clogs or flux discrepantly.
7
8
9
Check fuel and observe the fault if caused after fueling
Check engine ignition timing if ac cords with standard.
Check the exhaust gas from muffler if exhausts
smoothly
Contact with EFI commutator, open ignition switch,
10
check ECU5#、10#、23# stitch, the power whether
yes
Fault replacement
no
next
Yes
no
next
yes
next
no
yes
no
yes
supply normal or not, check 2#、21# stitch whether is
puting up iron or not.
Replace fuel
no
examine and repair
ignition timing
next
Repair
or
replace
muffler
Diagnosis help
Examine and repair
relevant wiring
( 13)No p ower and poor perfo rmance when in acceleration.
Possible defective part:1、fuel containing water; 2、air intake pres sure s ensor and throttle pos ition
sensor;3、spark plug;4、ignition coil; 5、throttle valve body and idle speed side air duct; 6、input air
duct;7、idle speed valve;8、fuel injector;9、ignition timing;10、muffler
O ve rh a ul :
R ef no
1
O pe rat io n
Tes t re s ult
C he ck th e fa ul ts i f exi st clu tch ski d, lo w tyre p re ssu re ,
yes
re pa ir
no
ne xt
l ag g ed br ak e, imp ro p er tyr e size e tc.
yes
2
C he ck a ir cle a ne r if is clo g ge d .
C on tact fue l p res sur e me ter (co n ta ct fr on t p o int o f
3
oil
P u ll o ut ig ni tion co il, an d co n ta ct with s pa rk pl ug , kee p
4
p o le o f spa rk p lu g 5m m awa y w ith bo d y of en gi ne ,
s ta rtin g e ng in e a nd c he ck th e h ig h pr essu re fi re
w he the r i s n o rm al o r n o t.
5
6
ai r in pu t system
ne xt
yes
ne xt
no
yes
no
exa mi ne a n d re pa ir
oi l sup p or t syste m
ne xt
exa mi ne a n d re pa ir
ig ni ti on system
C he ck spa rk p lug , loo k its typ e a nd g a p if a cco rd s with
yes
ne xt
sta nd a rd .
no
Ad ju st or rep la ce
D isa ssem b ly i dle s pe e d val ve an d ch ec k the thro ttle
yes
Cle a n re la ted pa rts
no
ne xt
yes
ne xt
va lve bo d y, i dl e sp ee d va lve an d i dle spe e d sid e a ir d u ct
wh e the r h a ve ca rb id e a ccu mu late d o r n o t.
7
Exa m in e an d re pa ir
no
i np u t p ip e o f in je ctor) , sta rtin g en g in e, ch eck th e fu el
p re ssu re wh eth er is ar ou n d 3 00 kP a o r n ot
N ex t S te ps
C he ck ai r in ta ke p re ssu re s en so r, thr ottle po sitio n
se n sor an d th ei r wir in g if wo rks r eg u la rly.
exa mi ne a n d re pa ir
no
wiri ng
or
re p la ce
sen so r
D isa ssem b ly inj ecto r, a n d ch eck th e i nje cto r by sp e cial
8
w ash in g a n alys is i nstr um en t i f e xists th e p he n om en a o f
l ea ks a nd clo gs.
9
C he ck fue l a nd o bse rve th e fa u lt if cau se d a fte r fue li ng
10
C he ck e ng in e ig n itio n tim in g if ac cor ds wi th stan d ar d.
yes
Fau lt re p la cem en t
no
ne xt
Ye s
ne xt
yes
ne xt
no
yes
11
C he ck
the e xh au st g a s fro m
m uffle r if e xha u sts
sm oo th ly
C on tact wi th E FI com mu tato r, o p en ign itio n switch ,
12
ch e ck E CU5 # 、 10 # 、 23 # stitch , the p owe r whe th er
no
yes
su p pl y no rm a l o r n ot, ch ec k 2# 、2 1 # stitch wh e th e r i s
p u ti ng u p ir on or no t.
Re pl ace fue l
no
no
exa mi ne a n d re pa ir
ig ni ti on ti min g
ne xt
Re pa ir
or
re p la ce
mu ffle r
Dia g no sis h el p
Exa m in e an d re pa ir
re le van t wiri ng