service manual - Family Go Karts

BRIEF INTRODUCTION TO FOUR-WHEELED
CROSS-COUNTRY VEHICLE MODEL 250ATV
Four-wheeled cross -country vehicle, model 250ATV is a full road condition vehicle which
can be driven on every kinds of road conditions such as sand beach, grassland, forest,village,
construction site country road , This maintenance manual of four-wheeled vehicle model
250ATV (Hereafter called cross -country vehicle for short) compiled by Chongqing Industries
Co., Ltd is specially provided for saler and technical staff of our Group. This manual mainly
introduce the maintenance, removing and repairing method of cross-country vehicle and provide some relative technology and performance data. Because this manual can’t collect the
whole content of cross-country vehicle, it can only help maintainer of our group and it’s saler
have a basic understanding on working principle, maintenance procedure and repairing technology of cross-country vehicle. If you don’t have this knowledge, when repairing cross-country vehicle, the condition of improper assembling and danger occurs after assembling are easily
happened. Proper operation and maintenance are the advance of your safely driving crosscountry vehicle, it also can reduce the troubles of cross-country vehicle and keep the best
performance of it. The specification, performance and explanation stated in the manual are
determined according to newly design of the vehicle, which are subject to changes without
notce.
In this manual, for specially important requirement, the words of “Warning ” “Caution ” are
labelled to prompt relative maintainer to abide it.
In the manual
Warning
Show that if the content of “Warning ”isn’t obeyed, the driver, maintainer,
checker will be heavily injuried, even dead.
Caution
Show that you must be careful to prevent the vehicle from being damaged.
Maintenance manual of four-wheeled cross-country vehicle model 250ATV
First edition July 2003
This manual is published by publishing factory. maintain the copyright of
publishing. Without permitted, publishing is prohibited.
Content
Content ............................................................................................................................................... I
Chapter I General description .............................................................................................................. 1
Section 1 Description .......................................................................................................................... 1
Section 2 Special tools, instruments & meters .................................................................................... 2
(I) Special tools ........................................................................................................................ 2
(II) Instruments & tools ........................................................................................................... 3
Section 3 Identification code, label of model and engine No. ............................................................. 4
Section 4 Points for attention in maintenance ..................................................................................... 4
Section 5 Specification ........................................................................................................................ 8
I. How to use conversion table of unit .................................................................................... 8
(1)How to use conversion table ............................................................................................... 8
(2)Definition of unit ................................................................................................................. 8
II. Basic specification ............................................................................................................... 9
III. ATV body ........................................................................................................................... 10
IV. Electric system ................................................................................................................... 11
V. Maintenance specification of engine .................................................................................. 13
Section 6 Wiring diagram of ATV ........................................................................................................ 16
(I) Technical explanation and requirement, details of relative component. .............................. 16
(II) Wiring diagram(1) ............................................................................................................... 18
(III) Wiring diagram(2) ............................................................................................................. 19
(IV) Wiring diagram(3) ............................................................................................................. 20
Section 7 Requirements for torque of fastener .................................................................................... 21
(1)ATV body ............................................................................................................................ 21
(2) Engine................................................................................................................................. 23
(3) General torque specification ............................................................................................... 25
Section 8 Lubrication .......................................................................................................................... 26
(1)Lubrication oil way .............................................................................................................. 26
(2) Lubrication diagram ............................................................................................................ 27
Section 9 Lubrication point and type of lubricants ............................................................................. 29
(1) Lubrication point and type of lubricants(ATV body) ......................................................... 29
(2) Lubrication point and type of lubricants(Engine) ............................................................... 30
Chapter II Maintenance and adjustment of vehicle ............................................................................ 31
Section 1 Periodic maintenance/ lubrication ....................................................................................... 31
Section 2 Disassembly and assembly of cushion, fender and fuel tank .............................................. 32
(I) Cushion ............................................................................................................................... 32
(II) Rear fender ......................................................................................................................... 33
(III) Fuel tank ........................................................................................................................... 35
I
(IV) Front fender ...................................................................................................................... 37
Section 3 Maintenance and adjustment of vehicle body .................................................................... 39
(I) Wear inspection of front and rear brake .............................................................................. 39
(II) Adjustment of front brake .................................................................................................. 39
(III)Adjustment of free clearance of left lever and rear brake pedal ......................................... 40
(IV) Position adjustmen of steering lever ................................................................................. 42
(V) Lubricating oil level inspection of rear driving gearcase ................................................... 42
(VI) Replacement of engine oil of rear driving gear case ......................................................... 43
(VII) Inspection of steering system ......................................................................................... 44
(IX) Adjustment of toe-in of front wheel ................................................................................ 45
(X) Inspection of front/rear shock absorber ............................................................................ 46
(XI) Adjustment of rear shock absorber .................................................................................. 46
(XII) Inspection of tire ............................................................................................................. 47
(XIII) Inspection of rim ............................................................................................................ 48
Section 4 Maintenance and adjustment of electrical appliance ........................................................... 49
(I) Inspection of battery ........................................................................................................... 49
(II) Inspection of fuse .............................................................................................................. 50
(III) Replacement of headlight lamp ......................................................................................... 51
Section 5 Maintenance and adjustment of engine .............................................................................. 53
(I) Adjustment of clutch .......................................................................................................... 53
(II) Clean of air filter ................................................................................................................. 53
(III) Inspection of spark plug ................................................................................................... 55
(IV) Adjustment of idle speed .................................................................................................. 56
(V) Adjustment of free clearance of throttle grip ..................................................................... 56
(VI) Adjustment of speed limitator .......................................................................................... 57
(VII) Adjustment of valve clearance ........................................................................................ 58
(VIII) Adjustment of timing chain tension ............................................................................... 60
(IX) Inspection of ignition timing ............................................................................................ 61
(X) Measuring of compressive force ....................................................................................... 62
(XI) Inspection oil quantity of engine ..................................................................................... 63
(XII) Replacement of engine oil and inspection of oil flow ...................................................... 64
Chapter III Repair and maintenance of vehicle body .......................................................................... 67
Section 1 Rear driving gearcase and driving shaft .............................................................................. 67
(I) Trouble ................................................................................................................................ 67
(II) Inspection .......................................................................................................................... 67
(III) Trouble-shooting table ..................................................................................................... 68
(IV) Disassembly ..................................................................................................................... 69
(V) Inspection .......................................................................................................................... 72
(VI) Pad choice of main driving gear and shift gear ................................................................. 73
II
(VII) Installation ...................................................................................................................... 75
Section 2 Front wheel and front brake ............................................................................................... 76
(I) Disassembly ....................................................................................................................... 76
(II) Inspecting procedures ...................................................................................................... 78
(III) Installation procedures .................................................................................................... 81
Section 3 Rear wheel/Rear brake/Rear wheel axle ................................................................... 84
(I) Removal steps .................................................................................................................... 85
(II) Inspection steps ............................................................................................................... 87
(III) Installment steps .............................................................................................................. 90
Section 3 Steering operation system .................................................................................................. 94
(I) Removal steps of steering bar ............................................................................................ 94
(II) Removal steps of steering vertical column welding .......................................................... 95
(III) Inspection content ........................................................................................................... 96
(IV) Installment steps .............................................................................................................. 97
(V) Installation steps of steering bar ...................................................................................... 100
Section 4 Front shock absorber and front wheel fork ........................................................................ 101
(I) Disassembly ....................................................................................................................... 101
(II) Inspection steps ............................................................................................................... 103
(III) Installment steps .............................................................................................................. 104
Section 5 Rear shock absorber and rear wheel fork ............................................................................ 107
(I) Disassembling steps .......................................................................................................... 107
(II) Checking steps ................................................................................................................. 109
(III) mounting .......................................................................................................................... 111
Chapter IV Electric appliance ............................................................................................................. 114
Section 1 Inspect switch .................................................................................................................... 114
(I) Inspect switch .................................................................................................................... 114
Section 2 check lamp(headlight) ........................................................................................................ 115
Section 3 Troubleshooting the ignition system failure ...................................................................... 117
Section 4 Running of starting circuit ................................................................................................. 122
Section 5 Troublshooting electric starting system ............................................................................ 123
Section 6 Check starting motor .......................................................................................................... 126
Section 7 No charging in the battery ................................................................................................. 129
Section 8 Troubleshooting ................................................................................................................ 132
Section 9 Inspection of lighting system ............................................................................................. 134
(I) If the headlight is out of work ............................................................................................ 134
(II) If the taillight is out of work .............................................................................................. 135
Section 10 Troubleshooting ............................................................................................................... 137
(I) If indicated lamp is out of work .......................................................................................... 137
Section 11 Inspection of signal system.............................................................................................. 139
(I) If the neutral indicated lamp is out of work ........................................................................ 139
III
(II) If the reverse indicated lamp is out of work ...................................................................... 140
(III) If the HB indicated lamp is out of work ............................................................................ 141
Chapter V Engine ............................................................................................................................... 142
Section 1 Disassembly of engine ....................................................................................................... 142
(I) Remove the engine from finished ATV .............................................................................. 142
(II) Disassembly of engine ...................................................................................................... 145
section 2 Inspection and maintenance of engine ............................................................................... 159
Section 3 Assembly and adjustment of engine .................................................................................. 183
(I) Closing assembly of left & right crankcase ........................................................................ 183
(II) Assembly of right crankcase ............................................................................................ 184
(III) Assembly of left crankcase .............................................................................................. 192
(IV) Selection and installation of adjusting washer ................................................................ 197
(V) Assembly of cylinder head ............................................................................................... 204
(VI) Manual starting mechanism and others ........................................................................... 211
(VII) Mount the engine on the finished vehicle ...................................................................... 211
Chapter VI Vecicle ordinary trouble and its judgement ...................................................................... 218
(I) Starting trouble/difficulty ................................................................................................... 218
(II) Poor idle speed performance ............................................................................................. 219
(III) Poor middle and high speed performance ........................................................................ 219
(IV) Shifting troubler ............................................................................................................... 219
(V) Clutch slips ....................................................................................................................... 220
(VI) Clutch is locked ............................................................................................................... 220
(VII) Engine is overheat .......................................................................................................... 220
(VIII) Brake trouble ................................................................................................................. 220
(IX) Shock absorber failure/improper operation ..................................................................... 220
(X) Lighting system ................................................................................................................ 221
VI
Chapter I General description
Section 1Description
1
2
3
4
6
5
7
8
9
1.Front wheel
2.Headlight
3.Steering lever
4.Shift pedal
5.Fuel cock
6.Hand-operated lever
7.Air chock
10
11
12
13
14
15
8.Tail light
9.Rear wheel
10.Rear luggage carrier
11.Exhaust silencer
12.Cushion
13.Fuel tank cover
14.Rear brake pedal
15.Front luggage carrier
16.Left lever of rear brake
17.Fixing clamp of rear brake
18.Main switch lock
19.Throttle grip
20.Right lever of front brake
21. Left switch unit
Caution:
The ATV you purchased maybe slightly differ from the pictures in the manual due to
improvement or other changement.
-1-
Section 2 Special tools, instruments and meters
(I) Special tools
Special tools is the necessary tools used for accurately adjustment and assembly, it is
helpful to prevent the maintenance defects and components damage caused by using improper
tools.
1.Wrench for valve adjustment mainly used for adjusting valve clearance. Specification:
3mm 90890-01311
2.Puller for piston pin, mainly used of removing pistion pin.
3.Remover for rotator, mainly used for pulling magneto rotator form crank.
4. Clamp for rotator, mainly used for clamping magneto rotator when removing it to prevent it’s rotation due to torque force.
5.Stop rotating meter for rotator, mainly used for removing and assembling rotator of kick
starter.
6.Puller for crank, mainly used for disassembling crank from crankcase.
7.Puller for rocker shaft, mainly used for removing rocker shaft.
8.Compressing tools for spring of valve, mainly used for fixing and compressing spring
when assembling valve lock clamp.
9. Assembling and disassembling tool for valve guide, mainly used for assembling and
disassembling valve guide.
10.Assembling buffer, mainly used for assembling crank and balancing gear.
11.Hollow sleeve, mainly used for assembling crank and balancing gear.
12.Assembling toal for crank, mainly used for assembling crank and balancing gear.
13.Assembling and disassembling joint for universal coupling, mainly used for assembling
and dismsembling universal coupling.
14.Assembling and disassembling disc, mainly used for assembling and disassembling reverse gear.
15.Fixed puller for gear, mainly used for assembling and disassembling gear.
For the above tools, you can select with reference to special tools of the same type
of vehicle.
-2-
(II) Instruments and meters
The following instruments and meters can be selected with reference to the same type of
vehicle.
speedometer of engine
(90890-03113)
multimeter
Ignition timing meter
(90890-03141)
spark tester of spark plug
barometer
ignition checker
measuring tool of gasoling
(90890-01312)
dial indicator
-3-
Section 3 Identification code, label of model and engine N0.
Identification code
It is engraved in the left or right side of front
supporting main tube of engine of frame.
¢Ù
Engine N0.
It is engravd on the lug of top middle part of
right crankcases of engine.
Section 4 Points for attention in maintenance
1.Preparation when disassembling
1.1 First clean the dirt, mud and attachment
on the vehicle befor removing or disassembling.
1.2 Use proper special too cleaning device
and means.
1.3 Keep all the components away from fire
source. Pay attention to the safety, Don’t be
burned by the high temperation portion of engine,
exhuaster and silencer etc. Be sure to take care
of each other when operation with other people.
1.4 When disassembling the ATV, put the
mated components, such as gear pairs, cylinder,
piston and other “mated” components by normal running in together, When assembling or
replacing these components, they should be in
pairs.
1.5 When disassembling the engine, clean
all the components and put in the tray in the or
-4-
der of disassembly, this in assembling, can
not only increase the assembling speed, but also
ensure the rightness of assembling.
2.Replace the components
When replacing the components, be sure to
use qualified products provided by use lubricants
and grease which brank is assigned by lubricate.
3.Oil seal, shim, o-ring clip split pin,
elastic washer.
3.1 When disassembling to maintain the
engine, in order to ensure that the reassembled
engine have good sealing and connecting part is
fixed and reliable, all the oil seal, shim, o-ring,
clip, split pin and elastic washer should be
replaced, be sure to keep lip of oil seal surface
of shim and o-ring in cleaning condition.
3.2 When reassembling, apply lubricants to
lubricate all the mated components and bearing,
apply grease for oil seal.
4. Clip
4.1Before assembling, be sure to check all
the clips carefully.Use a new one after removing the clip of piston pin. When mounting clip
ring ¢Ùmake the sharp face ¢Úon the opposite
position of impacted face ¢Ûof clip.(see left
fig)
5.Locking washer /shim and location pin
5.1When reassembling after disassembling.
be sure to replace all the locking washer /shim
and location pin @ After bolt or nut is fixed on
the locking position. be sure to bend and fix both
ends of locking shim along head of bolt or direction of nut.
6.Bearing and oil seal
6.1 When assembling bearing and oil seal
put the mark or specification of manufacturer
outside, When assembling oil seal apply a thin
film of lithium-base grease on the lip of oil seal.
Caution:
Don’t blow to dry the inside of bearing with
compressed air, this would damage the surface
of bearing.
-5-
Fig.7.1Removal of negative pole wire of battery
Fig.7.2 Connection of positive pole wire of battery
7.Check of electirc parts
7.1 Check the rust, dirt and moisture etc.
of connector, if there is moisture, please blow it
dry and clear the rust and dirt.
7.2 The eclectolyte inside the battery is a
kind of corrosive, when operation exercise shall
be taken not to let the electrolyte splash on the
body.
7.3 When repairing wire on electric parts,
first remove the wire on the termianl of negative pole of battery(see fig.7.1).When tightening or loosening bolt of terminal of big capacity
battery, don’t let the wrench contact with engine or other metal parts of vehicle body to
avoid the electric shock.
7.4 When connecting the wire of battery,
first connect the opositive pole wire of battery,
then connect the negative pole wire After connecting the wire, apply clean grease on the terminal to avoid the increasing of resistance due
to rust.
7.5 Check the terminal of connector
a Grip two terminals of connector together,
check with the multimeter.(see fig.7.3,fig.7.4)
Fig.7.3
Fig.7.4
-6-
b. If joint is slack, bend the plug pin
upward, then connect with connector plug(see
fig7.5)
Plug pin
7.6 Before mounting new fuse, check if the
load of fuse of components is right, especially
for the portion being burned broken regularly,
then mount the fuse having proper current value.
7.7Wire connector have two kinds, one is
single-head connector, another is multi -head
one.
Before connecting single-head connector ,
check if there is broken on the housing of joints,
the joint is fixed and if there is a broken phenomenon on it. When inserting the joint, it should
be fixed, then put in plastic coating after
inserting.
In general, multi-head connector is plastic
one, and locking catch is designed. When disassembling the connector, first open locking catch
when connecting again, first check if all the joint
is in good condition, if there is bent or twisted
on them. After connecting, align the locking
catch and lock them.
Fig.7.5
According to
intersecting
Fig.8.1Tightening method of screw and nut.
8. Use torque spanner to tighten screw and
nut, and as per specified torque to tighten them.
It should be tightened in steps from big ones to
small ones, from inside to outside and along the
direction of diagonal line to intersect. A s shown
in fig.8.1.
-7-
Section 5 Specification
(I) How to use conversion table of unit
(1)How to use conversion table
All the specified documents in this manual are taken SI and Metric as unit. With the following conversion table, metric unit could be conversed into imperial unit.
METRIC
mm
2mm
¡À
MULTIPLY
0.03937
0.03937
IMPERIAL
=
in
0.08in
Conversion table
Conversio between metric and imperial
Torque
Weight
Length
Volume/capacity
Others
Known unit
m.kg
m.kg
cm.kg
cm.kg
kg
g
km/hr
km
m
m
cm
mm
cc(cm3)
cc(cm3)
lit(liter)
lit(liter)
kg/mm
kg/cm2
Centigrade
Multiply
7.233
86.794
0.0723
0.8679
2.205
0.03527
0.6214
0.6214
3.281
1.094
0.3937
0.3937
0.03527
0.06102
0.8799
0.2199
55.997
14.2234
9/5(¡æ)+32
produst
ft.lb
in.lb
ft.lb
in.lb
lb
oz
mph
mi
ft
yd
in
in
oz(IMP liq)
cu.in
qt(IMP liq)
gal(IMP liq)
1b/in
psi(1b/in2)
Fahrenheit(0F)
Read
Millimetre
Centimetre
Kilogram
Newton
Newton meter
Meter kilogram
Pascal
Newton per millimeter
Liter
Cubic centimeter
Revolutions per minute
Definition
10-3Meter
10-3Meter
103Gram
1 lilo ¡Ámeter /second
Newton ¡Ámeter
Meter ¡Ákilo
Newton/meter2
Newton/centimeter
Measurement
Length
Length
Weight
Force
Torque
Torque
Pressure
Rigid of spring
(2)Definition of unit
Unit
mm
cm
kg
N
Nm
m.kg
Pa
N/mm
L
cm3
r/min
-8-
Volume or capacity
Rotational speed
II.Basic specification
-9-
III.ATV body
Item
Steering system
Type of steering bearing
Front
Standard
Powder metallurgy sliding bearing
Type
Spock rim, tubeless tire
Material of rim
Steel plate
Size of tire
AT 23¡Á7-10
Size of rim
AT 10 ¡Á5.5
wheel
Limit
Radial runout of rim
2.0mm
Lateral swing of rim
2.0mm
Type
Drum type
Inside diameter of brake drum
160mn
161mm
Thickness of friction piece
4.0mm
2.0mm
Free length of back spring of brake shoe
71.0mm
Type
Spoke rim, tubeless tire
Material of rim
Steel plate
Rear
Size of tire
AT 22¡Á10-10
wheel
Size of rim
AT 10 ¡Á8.0
Front
brake
Rear
brake
Radial runout of rim
2.0mm
Lateral swing of rim
2.0mm
Type
Drum type
Outside diameter of brake durm
160mm
161mm
Thickness of friction piece
4.0mm
2.0mm
Free length of back spring of brake shoe
71.0mm
Brake Free play of brake lever (left)
lever and
Free play of brake lever (right)
brake
pedal Free play of rear brake pedal
5-7mm
Free play of throttle grip
3-5mm
-10-
5-7mm
20-30mm
Item
Elastic coefficient of spring K1
Front
suspen- Free length of suspending spring
sion Stoke of shock absorber
system
Pre-tension force of spring is
Standard
Limit
10N/mm/0-117mm
293mm
117mm
Can’t adjustable
adjsutable or not
Elastic coefficient K2
Rear
Free length of suspending spring
suspension Assembling length
system
Stroke of shock absorber
Pre-tension force of spring is
49N/mm/0-85mm
263mm
244mm
85mm
Adjustable
adjustabe of not
Rear
wheel
fork
Assembling free play(left-end)
1.0mm
Assembling free play (right-end)_
1.0mm
IV.Electric system
Item
Voltage of electric system
Spark
plug
Standard
12V
Type
D7RTC
Resistance
10¦¸
Clearance of spark plug
0.6-0.7mm
Resistance of primary coil
Ignition
Resistance of secondary coil
coil
Clearance of min. spark
Limit
At 20¡æ(680F),0.5-1.5¦¸
At 20¡æ(680F),4.6-7.6¦¸
6mm(0.24in)
Ignition timing (Before upper stop point) 10/2300r/min
Ignition
system
Advancing angle of ignition (Before upper stop point)
30/4300r/min
Type of ignition advance
Electric type
-11-
Item
Magneto
Standard
Resistance of induction coil/colour
At 20¡æ(680F),189-231¦¸ Blue black
Resistance of source coil /colour
At 20¡æ(680F),470-530¦¸ Yellow/green-red
Type of C.D.I
Electric capacity contactless type
No-loading adjusting volatage
14.1-14.9V
Voltage-resisting value
200V
Type
A.C magneto
Rectifier
Charging Rated ouput voltage
system
Battery
At 2000r/min 14-15V
Coil resistance/colour
At 20¡æ(680F),1.0-1.2¦¸ White -white
Specific gravity
1.28
Type/capacity
12N14-BS/12V.14Ah
Broken Type
circuit of
Main fuse
circuit
system Resaved fuse
Fuse
Belay of Coil resistance
cut-off
current Diode
At 20¡æ(680F),72-88¦¸
20A
20A
Yes
Type
Constant mesh type
Electric
starting
0.35KW
Output power
system Starting
motor Resistance of armature coils At 20¡æ(680F),0.004-0.005¦¸
Electric
Ampere
starting Starting
system relay Coils resistance
-12-
100A
At 20¡æ(680F),4.8-5.3¦¸
Limit
V.Maintenance specificationof engine
-13-
-14-
-15-
Section 6 Wiring diagram of ATV
(I)Thechnical explanation and requirement, details of relative compenent.
1.Technical explanation
A Main switch wire, indicator wire, mileage meter wire (mounting digital mileage meter)
must be put throught the guide grip of holding
seat of steering bar. (see fig.1)
B Rear brake vent-pipe, carburetor ventpipe and vent-pipe of rear driving gearbox must
be inserted into the hole of supporting pad of
vent-pipe.(see fig.1, also see view D)
C Neutral and reverse switch wire, mileage meter wire(mounting with digital mileage
meter) should be fixed with bands here.(see
fig.1)
D After putting overflowing pipe of carburetor through two rear fixing part of engine
(on thge frame), then put it in the proper position between engine and rear arm. Note: Overflowing pipe be unblocked.(see fig.1)
S After putting rear brake cable, throttle
cable, wire of starting motor and mileage meter
(mounting with digital mileage meter )through
wire hook2, wire hook 2should be bent according to the method of view A.
P In this position, starting motor wire and
mileage meter wire(mounting with digital mileage meter)must be put throughh the hole of plastic grip in the fuel tank support of frame..(see
view B-B)
R In here, rear brake cable, rear brake
vent-pipe and mileage wire(mountig with digital
mileage meter)must be first put through wire
hook 2, then connect with respective matching
unit.(see fig. B-B)
Q In here, wire of reverse switch neutral
switch, and mileage meter (mounting with digital mileage meter)must be fixed with bands.(see
fig.B-B)
-16-
T When assembling the wire of ser. No.
14 and No.15.don’t need to put through the guide
clip of holdig seat of steering bar.(see fig.E-E)
W After putting the vent-pipe of tank
through the hole of main switch, lead it to the
lower of right side of steering bar, then put it
through the wire hook on the frame.
Note: Hose must be unblocked.(see fig.
E-E)
V The leading wire on the switch units of
steering bar, must be bound with band,(see fig.
G-G)
E After the vent-pipe of front brake is put
through plastic clip hole on the frame, surplus
portion should be put in the proper position of
frame.(see fig.2)
G After the vent-pipe of battery is checked
and no twist is found here, then insert it in the
presetting hole of rear fedner.(If free of maintenance battery is used, then this item of requirement doesn’t need.)(see fig.3)
H Wire of rear brake cable, rear brake
vent-pipe and mileage meter(mounting with digital mileage meter)should be put through the cable
frame welded on the frame in here.(see fig.3)
F In here, wire of starting motor must
be first put through the plastic clip on the
frame, then connect with the matching units.
(see fig.3)
L Vent-pipe of battery should be put
through the plastic clip fixed on the frame.(see
fig..)(If free of maintenance battery is used, then
this item of requirement doesn’t need.)
K In here, wire of throttle cable, rear brake
cable and mileage meter(mounting with digital
mileage meter )should be put through the cable
guide frame welded on the frame.(Throttel cable
should be mounted on the inner side of guide
frame direction).(see fig.4)
J Insert the starting relay into the inserter
preset by the rear fender, the direction should be
ensured the convenience of inserting.(see fig.4)
M After putting the vent pipe of battery
through the plastic clip mounted on the rear
fender, instert it into the hole preset by the rear
fender, (Combine with G)(see fig.4)(If free of
maintenance battery is used. then this item of
requirement doesn’t need).
U When assembling, mounting supporting
pad of vent-pinpe shouldn’t be leaked, and pay
attention to let the direction of mark upward.
(see view D )
N In here, the wire of taillight must be put
through the slot hole preset by tool kit from the
bottom of tool kit.(see view F)
2.Technical requirement
¢ÙIn the drawing, the wiring condition and
position for all kinds of wires on the ATV body
is marked. When assembling the finished ATV,
wiring should be done as per the drawing in
principle.
¢ÚFor the wiring and fixing method which
can’t be marked in the drawing , necessary technical explanation has been made, you should abide
to execute in assembling.
¢ÛFor the place of using plastic clip stipulated in the drawing, if can’t be used temporarily,
you can use band to fix it.
¢ÜThe dimension in the drawing is only used
for reference in operation, while not be used as
checking data. In the details of marking the code
No. of component, the self-carrying component
(wire etc.)of units only be marked with name.
3.Details of relative component
33
SSA0-000512-0
Wire clip 4
3
32
SSA0-000511-0
Wire clip 3
2
31
SSA0-000510-0
Wire clip 2
3
30
SSA0-000509-0
Wire clip 1
2
29
150.00-0.39
Cable band
6
28
150.00-03
band of steering bar
2
C.D.I magneto wire
1
27
26
150.00-06
25
FG-802000-0
Cut-off relay
1
24
SSA5-320000-0
Starting relay
1
23
SSA0-000516-0
Cable
1
22
Ven-pipe of rear brake
1
21
Wire of starting motor
1
20
High voltage coils and wire
1
Vent-pipe of carburetor 1
19
SSA0-000515-0 Vent-pipe of battery
1
18
SSA4-230000-0
Vent-pipe of front
1
Wire of headlight
1
Rear brake cable
1
15
Wire of handle bar switch
1
14
Wire of clutch wire
1
Throttle cable
1
17
16
SSA4-230000-0
13
SSA4-210000-0
12
SSA4-220000-0 Front brake cable units
1
11
Wire of mileage meter
1
10
Wire of neutral switch
1
9
Wire of reverse witch
1
8
Overflowig hose of carburetor
1
7
SSA0-000517-0 Vent-pipe of garbox
1
6
SS45-630000-0
Taillight unit
1
5
FG-803000-0
C.D.I
1
4
FG-805000-0
Rectifier
1
Vent-pipe of gearbox
1
3
2
SSA5-510000-0
Main swtich lock
1
1
SSA0-012000-0
Wire clip unit
1
Ser.No.
Code
Name
Q’ty Remark
-17-
(II)Wiring diagram(1)
Fig.1
EL
Fig.2
-18-
(III)Wiring diagram(2)
Fig.3
F
Fig.4
View F
-19-
(IV)Wiring diagram(3)
B-B
View A
-20-
View C
G-G
Section 7 Requirements for torque of fastener
(I)ATV body
Torque value of fastener
Tightening torque of
fastener of ATV body
Locking component and
Name of
Size of
location of ATV body
component
thread
Front wheel rim and front brake hub
Nut
M10 ¡Á1.25
8
55
5.5
40
Front brake hub and steering vertical post units
Nut
M12 ¡Á1.25
2
25
2.5
18
Fornt brake cam arm and cam shaft
Nut
M6 ¡Á30
2
9
0.9
6.5
Front brake and front shock absorber
Bolt
M12 ¡Á50
4
78
7.8
56
Front shock absorber and frame
Nut
M35 ¡Á1.5
2
55
5.5
40
Steering vertical post and pulling rod
Nut
M12 ¡Á1.25
2
25
2.5
18
pulling rod and nut
Nut
M12 ¡Á1.25
4
30
3
22
Steering vertical post and pulling rod
Nut
M12 ¡Á1.25
2
25
2.5
18
Steerig vertical post(lower)and frame
Nut
M10
1
30
3
22
Holding seat of steering vertical post and frame
Bolt
M8 ¡Á60
2
23
2.3
17
Steerig vertical post and upper & lower holding seat of steerig bar
Bolt
M8 ¡Á50
4
20
2
14
Front wheel fork and frame
Bolt
M10¡Á70
4
45
4.5
32
Front wheel fork and brake
Nut
M12¡Á1.25
2
25
2.5
18
Engine upper connection plate unit and frame(upper )
Bolt
M8 ¡Á6
2
33
3.3
24
Engine assy and engine upper connecting plate unit
Bolt
M8 ¡Á55
1
33
3.3
24
Engine assy and frame(front)
Bolt
M8¡Á105
1
48
4.8
35
Engine assy and frame(rear upper)
Bolt
M8¡Á105
1
33
3.3
24
Engine assy and frame(rear lower)
Bolt
M6 ¡Á16
1
33
3.3
24
Front fender and frame
Bolt
M6 ¡Á16
2
7
0.7
5.1
Screw
M6 ¡Á16
2
7
0.7
5.1
Bumper and frame
Bolt
M8 ¡Á16
4
11
1.1
8
Front luggage carrier and bumper
Bolt
M6 ¡Á16
2
11
1.1
8
Front luggage carrier and frame
Bolt
M8 ¡Á16
2
34
3.4
25
Front fender and front luggage carrier
Bolt
M6 ¡Á20
2
7
0.7
5.1
Rear fender and frame
Bolt
M6 ¡Á16
2
7
0.7
5.1
Rear luggage carrier and frame
Nut
M6 ¡Á40
2
7
0.7
5.1
Front fender flap and front fender supporting rod
Q’ty
Remark
Nm m.kg ft.lb
-21-
Tightening torque of
fastener of ATV body
Locking component and
Name of
Size of
location of ATV body
component
thread
Bolt
M8 ¡Á16
2
34
3.4
25
Rear fender and rear luggage carrier
Bolt
M6 ¡Á20
2
7
0.7
5.1
Left&right foot rest and frame
Bolt
M10 ¡Á22
4
65
6.5
47
Left&right foot rest and frame
Bolt
M8 ¡Á16
2
30
3
22
Supporting weldment in foot rest and bracket weldment
Bolt
M8 ¡Á16
4
30
3
22
Rear rim and hub
Nut
M10¡Á1.25
8
55
5.5
40
Rear wheel axle and nut
Nut
M16
2
150
15
110
Rear brake cam arm and cam shaft
Nut
M6 ¡Á30
1
9
0.9
6.5
Rear brake shoe and rear axle housing
Bolt
M8 ¡Á1.25
4
28
2.8
20
Rear wheel fork and frame(left)
Bolt
M22¡Á1.25
1
130
13
94
Rear wheel fork and frame(right)
Bolt
M22¡Á1.5
1
6
0.6
4.3
Rear arm shaft and nut(right)
Nut
M22¡Á1.5
1
130
13
94
Rear wheel fork unit and rear driving gearbox units
Nut
M22¡Á1.5
4
55
5.5
40
Rear wheel axle bushing and driving gearbox units
Bolt
M12 ¡Á1.25 ¡Á25
4
55
5.5
40
Rear shock absorber(upper)and frame
Bolt
M12 ¡Á75
1
50
5
36
Lower cover of gearbox
Bolt
M8 ¡Á12
2
17
1.7
12
Rear wheel axle bushing and rear wheel fork init
Bolt
M12 ¡Á1.25 ¡Á25
4
103 10.3
74
Fuel tank and frmae
Bolt
M6 ¡Á35
2
10
1
7.2
Oil draining bolt of rear driving gearbox
Bolt
M12¡Á1.25
1
23
2.3
17
Oiling bolt of rear driving gearbox
Bolt
M12¡Á1.25
1
23
2.3
17
-22-
Q’ty
Nm m.kg ft.lb
Remark
(II) Engine
Torque value of fastener
Tightening torque of
fastener of ATV body
Locking component and
Name of
Size of
location of ATV body
component
thread
Observing screw hole of cylinder head
Cap shaped nut
M6
1
7
0.7
5.1
Cylinder head
Flange bolt
M8
4
22
2.2
16
Bolt
M8
2
22
2.2
16
Screw
M6
2
7
0.7
5.1
Valve cover
Bolt
M6
5
10
1
7.2
Bearing stop plate of camshaft
Bolt
M6
2
8
0.8
5.8
Spark plug
Nut
M12
1
Cylinder
Bolt
M6
2
10
1
7.2
Balancing shaft gear
Nut
M14¡Á1.0
1
50
5
36
Starting ratchet disc
Bolt
M10¡Á1.25
1
50
5
36
Locking nut(adjusting screw of valve clearance)
Nut
M6
2
14
1.4
10
Cam timing sprocket
Bolt
M10
1
60
6
43
Chain tensioner
Bolt
M6
2
10
1
7.2
Chain tensioner cover
Bolt
M6
1
7
0.7
5.1
Upper guide plate of chain
Bolt
M6
2
8
0.8
5.8
Oil pump
Screw
M6
3
7
0.7
5.1
Oil draining screw plug
Plug
M35
1
43
4.3
31
Fine filter cover of engine oil(drainingoil)
Bolt
M6
1
10
1
7.2
Fine filter cover of engine oil
Bolt
M6
2
10
1
7.2
Carburetor seat and cylinder head
Bolt
M6
2
12
1.2
8.7
Carburetor and carburetor seat
Bolt
M6
2
12
1.2
8.7
Hose clip
M5
1
2
0.2
1.4
Air filter box and carburetor connecting pipe Hose clip
M5
1
2
0.2
1.4
Hose clip
M5
1
2
0.2
1.4
Silencer and frame
Bolt
M8
2
34
3.4
25
Silencer and exhaust pipe
Bolt
M8
1
20
2
1.4
Cylinder head and cylinder
Sprocket cover
Carburetor and carbuetor connecting pipe
Air filter box and intake pipe
Q’ty
Nm m.kg ft.lb
Remark
Apply oil
to washer
Apply oil
to washer
17.5 1.75 12.5
Apply oil
to washer
Twist with cable
guide part
-23-
Tightening torque of
fastener of ATV body
Locking component and
Name of
Size of
location of ATV body
component
thread
Bolt
M6
2
1
1
7.2
Crankcase(closing case)
Screw
M6
11
7
0.7
5.1
Left side cover
Screw
M6
6
7
0.7
5.1
Left crankcase cover
Screw
M6
8
7
0.7
5.1
Right crankcase cover
Screw
M6
9
7
0.7
5.1
Bearing clamp of right crankcase cover
Screw
M6
3
7
0.7
5.1
Apply tightening
agent
Bearing clamp of left crankcase cover
Screw
M5
3
7
0.7
5.1
Apply tightening
agent
Right connecting box
Screw
M6
3
7
0.7
5.1
Main clutch
Nut
M22
1
78
7.8
56
Assistant clutch spring
Bolt
M5
4
6
0.6
4.3
Assistant clutch hub
Nut
M14
1
50
5
36
Use locking
washer
Screw
M6
1
12
1.2
8.7
Apply tightening
agent
Nut
M8
1
15
1.5
11
Bolt
M8
3
30
3
22
Screw
M16
2
7
0.7
5.1
Nut
M16
1
60
6
43
Rivel to prevent
loosen
Screw
M8
3
25
2.5
18
Apply tightening
agent
Inner-hexagoral
screw sleeve
1
50
5
36
Apply tightening
agent
Inner-hexagoral
screw sleeve
Special-shaped
nut(L.H)
1
50
5
36
1
50
5
36
Exhaust pipe
Shift cam star-shaped gear
Locking nut
Q’ty
Nm m.kg ft.lb
Remark
Use locking
washer
(clutch releasig adjsutable screw)
Starting surpassig clutch
Connecting plate of starting motor
Output
Left case bearing clamp of driving shaft
Rear cover bearing
Rear cover bearing
Reverse gear
Rear cover
Bolt
M8
4
23
2.3
17
Front joint
Nut
M12
1
60
6
43
Reverse gear lever unit
Bolt
M6
2
12
1.2
8.7
Reverse gear lever unit
Bolt
M14
1
15
1.5
11
Locking nut of length adjuster of connecting rod
Nut
M8
1
15
1.5
11
Nut
M8
1
15
1.5
11
Flange nut
M6
1
10
1
7.2
(Reverse gear operation bar assy)
Locking nut of length adjuster of connecting rod
(Reverse gear operation bar assy)
Reverse gear operation rod and reverse gear lever mechanism
-24-
Apply tightening
agent, rivent to
prevent loosen
Apply tightening
agent
Apply tightening
agent
Tightening torque of
fastener of ATV body
Locking component and
Name of
Size of
location of ATV body
component
thread
Bolt
M6
1
10
1.0
7.2
Screw
M6
3
7
0.7
5.1
Neutral switch
M12
1
20
2.0
14
Reverse gear switch
M12
1
20
2.0
14
M6
1
12
1.2
8.7
Shift pedal
Magneto stator
Hand-started driving disc
Screw pin
Q’ty
Nm m.kg ft.lb
Remark
(III) General torque specification
General torque specification (standard screw)
This table is screw locking specification drawn
up by International Standard Association.
In order to avoid the twist or unbalancing phenomenon when locking screw. please cross lock or
londuit as per appointed orders.
A
B
*When measuring torque force, standard torque
force testing spanner must be used.
Specification of general
lorque
A
(Nut)
B
(Screw)
10mm
6mm
0.6
12mm
8mm
1.5
14mm
10mm
3.0
17mm
12mm
5.5
19mm
14mm
8.5
22mm
16mm
13.0
m.kg
A.Size of nut
B. Size of thread
-25-
Section 8 Lubrication
Standard
Item
(I) Lubrication oil way
:Pressure
:Splashing oil
Piston/cylinder
Piston pin
Automatic centrifugal clutch
Valve
Connecting rod
Camshaft
Crank
Rocker
Bearing
Spindle
Fine filter
Driving shaft
Middle gearbox
Oil pump
Rough filter
-26-
Branch valve
Sprocket chamber
(II) Lubrication diagram
1. Oil draining plug
8. Oil pump driving gear
2. O-ring
9. Camshaft
3. Compressing spring
10. Crankcase
4. Rough filter
11. Crank
5. Oil pump washer
12. Spindle
6. Oil pump assy
13. Driving shaft
7. Oil pump driven gear
14. Fine filter
-27-
1. Single-direction valve
8. Single-direction bearing(automatic centrifu-
2. Engine oil fine filter
gal clutch)
3. Engine oil filter cover
9. Crank pin
4. O-ring
10. Crank pin
5. Clip
11. Spindel
6. camshaft
12. Driving shaft
7. Rocker
-28-
Section 9 Lubrication point and type of lubricants
(I)Lubrication point and type of lubricants(ATV body)
Lubrication point
Type of lubricants
Lip of oil seal (full)
Light lithium-base grease
O-ring (full)
Light lithium-base grease
Steering shaft(upper end,lower end)
Light lithium-base grease
Ball connection of steering pushing rod
Light lithium-base grease
Front wheel fork (ball-shaped joint)
Light lithium-base grease
Front wheel bearing
Grease used for bearing
Braking camshaft
Front & rear
Rotating pin seat
Light lithium-base grease
brake
Lip of oil seal
Dust-proof ring of brake
Light lithium-base grease
Joint of front brake cable
Light lithium-base grease
Front brake lever axle and rear brake lever axle
Light lithium-base grease
Adjusting nut and pin of front brake cable
Light lithium-base grease
Adjusting nut and pin of rear brake cable
Light lithium-base grease
Rear brake pedal pivot and brake pedal axle hole
Light lithium-base grease
Throttle rotating frame shaft and end section of throttle cable
Light lithium-base grease
Reverse gear lever pivot
Light lithium-base grease
Connection bolt of rear wheel fork and frame,rear wheel fork bearing
Light lithium-base grease
Rubber sleeve and rear wheel fork
Seal gum
Rear shock absorber bushing
Light lithium-base grease
-29-
(II)Lubrication point and type of lubricants(Engine)
Lubrication point(name of component)
Type of lubricant
Lip of oil seal
(Crank,shift gear shaft,spindle,shift gear operation shaft) Light lithium-base grease
All bearing
(Crank spindle, driving shaft, output shaft, balancing
Lubricating-oil
shaft,shift gear camshaft, pneumatic canshaft)
O-ring
(Contact position of o-ring)
Stem end of intake and exhaust valve
(Intake and exhaust valve, vale adjsuting screw )
Lubricating-oil
Fastener of cylinder head
(Bolt flange face,thread portion,washer endface)
Lubricating-oil
Outside surface of piston pin
(Piston piston pin,small connecting rod)
Lubricating-oil
Outside surface of piston.piston ring
(Cylinder block ,piston, piston ring)
Lubricating-oil
Inner hole of main driving gear of main clutch
(Crank main drivinggear)
Lubricating-oil
Inner hole of assistant clutch gear unit
(Assistant clutch gear unit,spindle)
Lubricating-oil
Assistant clutch releasing operation rocker unit
(Operation rocker and it’s contact portion)
Lubricating-oil
Upper cam plate guide rod
(Upper cam plate unit guide rod)
Lubricating-oil
Inner hole of upper cam plate unit
(Shift gear shaft, upper cam plate unit)
Lubricating-oil
Steel ball bracket unit
(Steel ball brakcket unit, upper&lowr cam plate)
Lubricating-oil
Surpassing clutch
(Surpassing clutch ,main clutch cover,inner spline)
Lubricating-oil
Outside surface of reverse gear controlling rod
(Reverse gear controlling rod,rear transmission)
Lubricating-oil
Outside surface of reverse grea fork shaft
(Reverse gear fork shaft, reverse gear fork ,steel ball)
Lubricating-oil
Spindle and inside hole jointing face of right crankcase
(Spindle ,right crankcase)
Lubricating-oil
Outside surface of reserve gear controlling rod
(Reverse gear controlling rod crankcase)
Lubricating-oil
Contactor of reserve gear switch
(Reverse gear swtich ,reverse gear fork)
Lubricating-oil
Outside surface of short fork shaft
(Fork shaft ,fork crankcase)
Lubricating-oil
Outside surface of long fork shaft
(Fork shaft ,fork ,crankcase )
Lubricating-oil
Shift gear camshaft portion,slot portion,contactor
(Fork, shift gear cam ,crankcase)
Lubricating-oil
Outside surface of shift gear shaft
(Shift gear shaft and it’s contacting portion)
Lubricating-oil
Outside surface of over-wheel shaft
(Over-wheel shaft ,crankcase)
Lubricating-oil
Bushing inner hole of big gear of electric stater
(Bushing,left crankcase)
Lubricating-oil
Electric starting clutch
(Rolling post and it’s contacting portion)
Lubricating-oil
-30-
Light lithium-base grease
Chapter II MAINTENANCE AND
ADJUSTMENT OF VEHICLE
Note:
The correct maintenance and adjustment are necessary to ensure vehicles, normal
driving.The repair personnel should be familiar with the contents of this article.
Section 1 Periodic Maintenance/Lubrication
Item
Valve
Requirement
Every time
Every
3
6
6
1
month month month month
Check the valve clearance.Adjust it if necessary.
¡ð
Check the clearance and clean the plug. Replace it if necessary.
¡ð
1
year
¡ð
¡ð
¡ð
¡ð
¡ð
¡ð
¡ð
¡ð
Check it there is crack or damage in gas tube.Replace it if necessary.
¡ð
¡ð
Check the leakage.Tighten it again if necessary.Replace the gasket if necessary.
¡ð
¡ð
Clean
¡ð
¡ð
Oil circuit
Check the cracks or damage of oil tube.Replace it if necessary.
¡ð
¡ð
Engine oil
Replace.(Preheat the engine before draining the oil)
¡ð
¡ð
¡ð
Oil filter
Clean
¡ð
¡ð
¡ð
Oil filter screen
Clean
¡ð
¡ð
¡ð
Check the oil level and leakage.Replace.
¡ð
Brake
Check the operation.Adjudt it if necessary.
¡ð
Clutch
Check the operation.Adjudt it if necessary.
Wheel
Spark plug
Air filter
Carburetor
Cylinder head
Exhaust system
Spark surpressor
Gear case oil
Wheel bearing
Clean it. Replace it if necessary.
Check the idle or starting state.Adjust it if necessary.
¡ð
¡ð
¡ð
¡ð
¡ð
Check the balance,damage,run-out etc.Replace it if necessary.
¡ð
¡ð
¡ð
Check the looseness and damage.Replace it if necessary.
¡ð
¡ð
¡ð
Front&Rear suspension systemCheck
Steering system
Bearing of steering
verticle column
¡ð
¡ð
the operation and correct it if necessary.
Check the operation and corrcet it if necessary.Check the toe-in and adjust it if necessary.
¡ð
¡ð a¡ð
Lubricate every 6 months (lithium soap grease)
Connecting piece and fastenerCheck all the connecting piece and fasteners of chassis correct them if necessary.
¡ð
¡ð
¡ð
¡ð
¡ð
¡ð
¡ð
¡ð
¡ð
.We advise that the maintenance of these items should be conducted by our saler.
-31-
Section 2 Diassembly and assembly of
Cushion, Fender and Fuel fank
(1) Cushion
¢Ù
1.Disassembly
(1) Place the vehicle on the horizontal ground.
(2) Disassemble the cushion ¢Ù;
Pull the cushion lock lever ¢Úupward, then
raise the tail part of cushion. By that, you can
disassemble the cushion.
¢Ú
2.Installation
Firstly insert the support lug on the front end of
cushion into the spigot of frame, then press
down the rear part. Pay attention to confirm if
the cushion is installed firmly.
-32-
(II) Rear fender
1.Disassembly
(1)Place the vehicle on the horizsontal ground.
(2)Disassemble the rear luggage carrier ¢Ù
¢Ù
(3)Disassemble the cushion (see the centents
of cushion disassembly in this section)
(4)Disconnect the negative wire ¢Ýand positive wire ¢Ü of battery.
¢à
Caution
Should disconnect the negative wire¢Ý fistly.
(5)Disassemble the clamp plate ¢áof battery.
(6)Disassemble the starting relay ¢Þ.
¢á
¢Ü
¢Þ
¢ß
¢Ý ¢â
(7)Disassemble the cut-off relay ¢ß.
(8)Take out the battery ¢à.
(9)Disassemble the rear fender ¢â.
-33-
2.Installation
Operate according to reverse procedure of
“Disassembly”.Pay attention to following
points:
(1)Install:
Rear fender
Bolt ¢Ù(rear fender and frame).The torsion is
7N.m.
Bolt ¢Ùand rubber hood of protecting plate
(rear fender and frame).The torsion is 7N.m.
¢Ù
(2)Install:
a.Battery ¢Ù
b.Battery clamp plate ¢Ú
¢Ù
¢Ú
¢Þ
¢á
¢Û
¢Ý
(3)Install:
a.Cut-off relay ¢Û
b.Starting ¢Ü
c.Connect the positive wire ¢Þof battery
d.Connect the negative wire ¢Ý of battery
(4)Install the cushion¢Ù
Caution
Insert the support lug ¢Ú of cushion into the
plug seat ¢Ûon the frame, then press down
the cushion.
¢Ù
¢Û
¢Ú
(5)Install the rear luggage carrier ¢Ù
Torque requiement of fasteners:
Bolt ¢Úfastening torque: 3N.m
Bolt ¢Ûfastening torque:9N.m
Caution
Remember to install the bushing on the con-
¢Ù
-34-
¢Ú
¢Û
necting point of luggage carrier and frame.
(III)Fuel tank
1.Disassembly
(1)Place the vehicle on the horizontal ground.
(2)Disassemble the cushion (see“Cushion
disassembly”of this section)
(3)Remove the air hose ¢Ùon the fuel tank
cover.
(4)Remove:
a.Bolt¢Ú, flat washer 30, installing bushing of
upper cover of fuel tank, washer and rubber
hood 2 of fuel tank.
b.Screw
c.Plastic expansion scrwe assy.
d.Fuel tank cover ¢Û.
e.Upper cover of fuel tank ¢Ü.
¢Ù
¢Ú
¢Û
¢Ü
(5)Remvoe the rubber pad of fuel tank, and
screw the fuel tank cover onto the fuel tank
immediately.
(6)Pull the fuel cock lever to “OFF”position.
(7)Remove the fuel inlet pipe
Caution
Place a cloth on the engine to absorb the
splashed gasoline.
Warning
The gasoline is inflammable. Avoid to splash it
on the hot engine.
(8)Remvoe:
Bolt, flat washer 30, rubber hood of fuel tank
and installing bushing of fuel tank.
(9)Remvoe the air inlet pipe of air filter, supporting pad of air pipe.
(10)Remove the fuel tank.
-35-
2.Installation
Operate according to reverse procedure of
“Disassembly”,and pay attention to followig
points:
(1)Install the fuel tank
(2)Connect
a.Air inlet pipe and hose
b.Supporting pad of air pipe and air rubber pipe
Caution
The convext part on the ring should be foreward
when installing the Supporting pad of air pipe.
(3)Install the bolt, bushing of rubber hood and
washer.
Fastening torque of bolt:10N.m
(4)Install:
a.Upper cover of fuel tank
b.Fuel tank cover
c.Plastic expansion screw assy
d.Screw
e.Bolt and related fasteners and connecting
pieces.
The fastening torque of bolt is 10N.m.
(5)Connect:
.Air hose
(6)Install
.Cushion(see “Cushion installation”of this
section)
-36-
(IV)Front fender
1.Disassembly:
(1)Place the vehicle on the horizontal ground.
(2)Disassemble the front luggage carrier ¢Ù.
(3)Disassemble the front guarding plate ¢Ú.
¢Ú
(4)Cut off the connecting wire¢Ùof headlight.
(from connecting point)
(5)Disassemble the bumper ¢Ú.
(6)Disassemble the front fender ¢Ù.
-37-
2.Installation:
Operate according to reverse procedures of
“Disassembly”.
(1)Install:
a.Front fender ¢Ù
b.Bolt. The fastening torque is 7N.m
c.Bolt. rubber hood of protecting plate:The
fastening torque is 7N.m
(2)Install the bumper ¢Ù.
The fastening torque of bolt (bumper and
frame)is 16N.m.
¢Ù
(3)Install the front guard plate ¢Ù.
(4)Install the front luggage carrier.
Bolt(front luggage carrier and frame).The fastening torque is 34N.m.
Bolt (front luggage carrier and bumper)..The
fastening torque is 11N.m.
-38-
Section 3 Maintenance and Adjustment of Vechicle Body
(I)Wear inspection of front&rear brake
1.Check the front brake
(1)Brake the vehicle with front brake
(2)Check:
.Wear indication ¢Ù
.If the wear indication reach the wear limit mark
¢Ú,replace the brake shoe assy.
Refer to section“Front wheel and front
brake”in chapter VII.
¢Ù
¢Ù
¢Ú
2.Check the rear brake
(1)Thread down the rear brake pedal to brake
the vehicle.
(2)Check
.Wear indication ¢Ù
.If the wear indication reach wear limit mark
¢Ú,replace the brake shoe assy.
Refer to section “Real wheel and real brake”in
chapter VII.
(II)Adjustment of front brake
¢Ú
Caution
Before adjusting, check the wear degree of
front brake according to above procedures.
Caution
In order to avoid too large or too small brake
force when braking, must ensure the proper
free clearance of left/right brake lever and rear
brake pedal:
1.Check
If the free clearance of right lever does not
conform to specification as shown in figure,
adjust it according to followig standard.
Standard free clearance of right lever:5-7mm
Calculate from the fulcrum.( in figure)
-39-
¢Ý
¢Ù
¢Ú
2.Adjustment
Adjusting procedure of free clearance of right
lever:
.Loosen the locking nut¢Ù,and rotate the cable
adjsuting screw ¢Úclockwise to reduce the
tension of front brake cable.
.Check the cable joint ¢Üof balancer¢Û to examine the balance.
.If unbalanced. rotate the two adjusting nuts
¢Ý until the cable joint ¢Üis balanced.
.Pick up the front wheel form ground, and rotate the two front wheels, and ensure the two
front brake light brake force.
.Rotate the adjusting screw ¢Ú clockwise or
counterclockwise to gain proper free
clearance.
Clockwise: increase free clearance
Counterclockwise:reduce free clearance
.Tighten the lock nut
(III)Adjustment of free clearance of left lever and rear brake pedal.
Caution
Before adjusting, must check the wear condition of rear brake.
Caution
In order to avoid too large or too small brake
force of rear brake, must ensure qualified free
clearance of left lever and rear brake pedal.
Warning
When braking after adjusting, must adjust the
left lever and rear brake pedal simultaneously.
1.Place the vehicle on the horizsontal ground
-40-
2.Adjust
.Free clearance of left lever
.Free clearance of rear brake pedal
Adjusting procedure:
Caution
Before adjusting, tread the rear brake pedal
2-3times.
.Loosen the locking nut completely, and screw
in the cable adjusting screw completely.
.Loosen the adjusting nut ¢Ûof rear brake
cable and adjusting nut¢Üof rear brake pedal.
.Tighten up the adjusting nut ¢Üof rear brake
pedal until gaining correct clearance :
Free clearance
(rear brake pedal ): 2030mm.
.Rotate the adjusting nut ¢Ûof rear brake
cable until gaining correct clearance : 01mm
¢ÝRear brake arm assy
¢ÞPin
.Screw out the adjusting screw of rear brake
cable until gaining correct free clearance :
Freee clearance (left lever ):5-7mm
.Screw up the locking nut
.Check the free clearance of left lever and
rear brake pedal.
If not conforming to standard value, repeat
above procedures to adjust.
Warning
After adjusting, raise the rear wheels from the
ground and rotate them to confirm no brake
force to block the rotation. Otherwise repeat
above adjustment.
-41-
(IV)Position adjustment of steering lever
.Position adjusting procedure of steering lever.
.Place the vehicle on the flat guound.
.Change the shift to the 1st gear, and pull the
steering lever ¢Ùto reverse gear position.
.Loosen the locking nut ¢Ú
.Screw in or out the adjusting nut ¢Ûof steering lever until the middle line of the tension
rod plate aims at the alignment mark on the
rear transmission cover (or the vehicle will not
release the gear in driving when on driving or
reverse gear.)
.Screw tightly lock nut ¢Ú
Torsion of lock nut :15N.m
Caution
After adjusting the steering lever, ensure the
reverse gear indicator to light up when the steering lever is on reverse gear position.
(V)Lubricating oil level inspection of rear driving gear case.
Check the lubricating oil level of rear driving
gear case. Refill the oil if the level is low:
Caution
The engine must be in cold state. (at normal
temperature.)
Checking procedure:
.Place the vehicle on the flat ground.
.Place an oil catcher under the rear driving gear
case.
.Remove the oil filling screw plug ¢Ùand sealing washer.
.Observe the oil level: the correct lever should
be on the bottom of oil filling hole.
.If the oil level is too low, please refill the recommended engine oil to specified oil level.
Refer to the section “Replacement of engine oil
of real driving gear case”.
.Check the damage of sealing washer .If
damaged, replace it .
.Install the sealing washer and oil filling screw
plug ¢Ù.
Caution
.Install the sealing washer firstly before installing the oil filling screw plug.
.After installing the oil filling screw plug, check
the leakage.
Torsion of oil filling screw plug: 23N.m
-42-
(VI)Replacement of engine oil of rear driving
gear case.
1.Place the vehicle on the flat ground.
2.Place an oil catcher under the rear driving gear
case.
3.Remove:
.Below cover of gear case.
.oil Filling screw plug
.oil draining screw plug ¢Ù
Drain out the engine oil of the rear driving gear
case.
4.Check:
.Sealing washer (oil filling screw plug position)
.Sealing washer (oil draining screw plug
position)
‘If damaged, replace them.
5.Install:
Oil draining screw plug(rear driving gear case)
Torsion of oil draining screw plug:23N.m
6.Oil filling screw plug
Caution
Avoid the foreign matter to enter the driving gear
case.
Recommended oil:
SAE80API “GL-4” engine oil of hypoid gear
If needing, you may use SAE80W90 engine
oil of hypoil gear
Periodic replacement:
0.12L
Total capactity:
0.27L
7.Install:
.Oil filling screw plug(rear draining gear case)
Caution
After refilling, check the leakage.
Torsion of oil filling screw plug: 23N.m
-43-
(VII) Rubber sleeve inspection of rear wheel
fork
Check
.Rubber sleeve ¢Ù
If damaged or worn, replace it.
Refer to the 6th section “Rear shock absorber
and rear wheel fork” of chapter3.
(VIII)Inspection of steering system
1.Place the vehicle on the flat ground
2.Check:
.Clamp seat of steering vertical column and
sliding bearing on the lower end of steering
vertical column, upper &lower and front &rear
moving steering bar If the clearance is too
large, replace the sliding bearing
Refer to section“Steering system”of chapter3.
3.Check:
.Ball pin unit of steering tension rod.
Rotate the steering bar leftward and/or
rightward, then roate from left to right lightly.
If the ball pin unit ¢Ù of steering tension rod
have any vertical clearance, replace it.
Refer to section“Steering system” of chapter3.
4.Raise up the front end of the vehicle to make
the front wheel not bear any load.
5.Check :
.left/right front seat assy on front brake
position, and/or bearing 6005-2Z/bearing 6203.
When moving the wheel back and forth
horizontally, if the clearance is too large, replace the following components:
1)bearing 6005-2z/bearing6203
2)left/right front seat assy ¢Ù
3)split pin¢Ú
4)front fork ball connection¢Û
5)bushing assy ¢Ü
Refer to 4th section“Steering system”of
chapter3.
-44-
(IX)Adjustment of toe-in of front wheel,
1.Rest the motorcycle on the flat ground
2.Measurement:
.Toe-in
.Adjust if out of specification
.Adjustment steps of toe-in.
.Mark the centers of tire thread of two front
wheel.
.Lift the front end of motorcycle to keep the
front wheel from force.
.Faster the steering forward. Measure the width
between two marks.
.Rotate the front tire by 1800 up to the marks
are in reverse.
.Measure the width B between two marks.
.Calculate the toe-in with the following formular
toe-in=B-A
Standard value of toe-in:0.5mm
.If the toe-in is not correct, please adjust.
3.Adjusting
Adjusting steps of toe-in:
.Mark determination marks at the end of left/
right tension rod ¢Ù.
.Loosen the locking nuts at the end of left/right
tension rod ¢Ù.
.Left/right tension rods ¢Ûshould turn the same
turns left or right up to obtain in the specified
toe-in and make the left/right tension rods are
the same in strength.
Tighten up the the locking nuts ¢Ûat the end of
left/right tension rod.
Torque of locking nut :30N.m
Caution
.Make sure that left/right tension rods have
turned the same turns. Otherwise the motorcycle will still go forward left and right even
though. Operate the motorchycle to go forward
straightly with steering bar, easily causing to
getting out of control and accident.
.After adjusting the toe-in correcty drive the
motorcycle to move forward a span of distance
by fastening the steering bar so as to make sure
if the steering bar is normal, if not, adjust the
tension rod left or right within the specification.
-45-
(X)Inspecion of front/rear shock absorber
1.Rest the motorcycle on the flat ground
2.Inspection:
.Ball joint assy ¢Ù(Upper part of front shock
absorber ).
If broken/Damaged. replace the front shock
absober.
.Rear shock rod ¢Ú(Rear shock absorber)
If scraped/damaged. replace the rear shock
absorber
.Oil leakage ¢Û
If the heavy oil leakage of front /rear shock
absrobers is found, replace it.
Refer to section of “Front shock Absorber and
Front wheel Fork”or Section of “Rear shock
Absorber ”and Rear “Wheel Fork”.Chapter
Three. Section Five and section Six.
3.Inspection
.Operation:
.Shock the fornt /rear shock absorbers up and
down two times.
.If it is not active in operation, replace the
component.
Refer to Section of “Front shock Absorber and
Front wheel Fork”or Section of “Rear”
“Wheel Fork”.Chapter Three.
Section Five and Section Six.
(XI)Adjustment of rear shock absorber
Adjustment of spring preload:
Turn the adjusting ¢Ùto increase or decrease
the spring preload.
Caution
The spring preload of rear shock absorber can
be adjusted to be applied to needs, hobby,
Weight of the operator and driving conditions.
Standand Position:B
A-Softest
E-Hardest
-46-
(XII) Inspection of tire
Warning
This motorcycle adopted the low pressure tire,
So correct filling pressure and keeping the
proper pressure is very important.
.Tire characterics
1)Quality characterics of tire will affect the
driving reliability of ATV. The following types
of tires reliability by our company be used
safely by this motorcycle. If adpot other tires
it will cause the disadvantageous effect.So they
are out of recommendation.
Manufacturer
Dimension
Type
Front Zhengxin or Wuxi
AT22 ¡Á7-10
Zhengxin or Wuxi
Rear
AT22 ¡Á10-10
Zhengxin or Wuxi
Zhengxin or Wuxi
.Tire pressure
1) Recommended tire pressure.
Front 20Kpa(0.20kg f/cm2)
Rear 25Kpa(0.25kg f/cm2)
2)The overlow tire pressure will cause the tire
came out of the rim in bad driving condition.
The Min. tire pressure
Front 17Kpa(0.17kg f/cm2)
Rear 22Kpa(0.22kg f/cm2)
3)When installing the tire to the rim, the tire
pressure should be no more than.
Front 250Kpa(2.50kg f/cm2)
Rear 250Kpa(02.50kg f/cm2)
After installing the tire to the rim, the overhigh
pressure will cause explosion. Filling pressure
should be conducted slowly and carefully, the
overfast fillig pressure will cause the tire to
explosion.
Caution
The Max load of the motorcycle is 165kg
(including driver)
-47-
1.Measurement
.Tire pressure(nomal atmospheric temperature):
If out of specification, adjust.
Caution
.The manometer of tire belongs to spare parts
of the motorcycle(Never use the high pressure).
.If the foreign matters such as dust, etc are
absorbed in the tire pressure manoeter, the readig
of the meter will be not correct, at the moment,
the second measurement should be conducted
and the second measurment reading should be
adpoted.
Warning
.Uneven and Improper tire pressure is disadvantageous to driving of the vehicle, which may
cause getting out of control.
.Keep the proper tire pressuer
.The tire pressures of two front tires and two
rear tires should be kept identically.
Normal
temperature
tire pressure
Front
Rear
Standard
20kpa(0.20kgf/cm 2 ) 25kpa(0.25kgf/cm 2 )
Min
17kpa(0.17kgf/cm 2 ) 22kpa(0.22kgf/cm 2 )
Max
23kpa(0.23kgf/cm 2 ) 28kpa(0.28kgf/cm 2 )
2.Inspection
.If wear/damage is found on the surface of tire,
replace.
Warning
Using the overworn tire is very dangerous.
If the tire is worn to the specified position,replace immediately.
Wear limit of tire:
Front and rear tires: 2.0mm@
(XIII)Inspection of rim
Inspection of rim ¢Ù:
If cracked/bent/damaged,replace it.
Caution
Keep the rim in balance when replacing the rim
or tire.
Warning
Never attempt to repair the rim.
-48-
Section 4 Maintenance and Adjustment of Electrical Appliance
(I)Inspection of battery
Warning:
The electrolyte is dangerous article, whitch includes sulphuric acid, so it is poisonous and
corrosive.
.Please operate by the following steps:
a.Avoid the body touching the electrolyte so as
to protect the eye from burn or damage.
b.Wear the protective glasses when operating
near the battery.
.Avoiding measures(External):
a.Wash the skin with water.
b.Wash the eyes for 15 minutes with water, then
conduct treatment at hospital.
.Avoiding measures (Internal):
Drink a plenty of water , magnesia oxide, egg
and rapeseed oil, and conduct treatment as early
as possible.
.The battery can produce explosive gas, so follow the following protection measures:
a.Be sure to keep the ventilation when changing
the battery.
b.Keep it away from spark, flame,(such as welding equipment, burning cigarette, etc).
c.Smoking is strictly prohibited when charging
or operating the battery to keep the battery and
electrolyte away from children.
1.Removal (Refer to the content of Section Two
of this chapter.)
.Cut off
Refter to “Removal of cushion”of this chapter.
Battery electrode (negative electorde¢Ù,positive
electrode)
Warning
First remove the negative electrode
3.Removal:
a.Battery clamp plate ¢Ü
b.Battery clamp plate ¢Û
Caution
Before using a new battery, be sure to charge
to ensure the best condition of the vehicle.
4.Inspection of battery electrode
If the dirt is found, clean off with brush.
If it is not connect well , correct it.
Caution
After cleaning the electrode, apply a film of lubrication grease.
-49-
5.Inspection of battery
If damaged, replace it
6.Installment of battery ¢Û
7.Connect
.Battery electrode(positiove electrode ¢Ù
negative electrode ¢Ú)
First connect the positive electrode ¢Ù
¢Ü
¢Ù
¢Û
¢Ú
8.Installment:
a.Battery clamp plate ¢Ü
b.Cushion
(II)Inspection of fuse
Caution
Closet the main switch when checking or replacing the fuse, otherwise, it will cause the
short circuit.
¢Ù
1.Inspection steps
.Remove the fuse ¢Ù
.Connect the small-size test instrumentation to
measure if the fuse is connected well.
Caution
Set the test instrumentation at the postion of
“52 ¡Á1”
Small size test instrumentation:
9/N.YU-03112
90890-03112
.If the indicating meadle indicates toward ¡Þ,
the fuse has broken needing to be replaced.
-50-
2.Replacement of fused fuse
Replacement steps:
.Cut off ignition and circuit.
.Install the qualified fuse
.Start the power for electrical appliance
inspection.
.If the fuse fused, inspect the system again
Refer to “Elefctrical Appliance”of Chapter
Four
3.Installment of fuse cover
¢Ù
¢Ú
(III)Replacement of headlight lamp
1.Cut off
.Connecting wire terminal of headlight ¢Ù
2.Removel
.Unit of headlight¢Ú
3.Take out the lens ¢Ù
4.Removal the lens seat ¢Ú
Rotate countercolockwise when taking out the
lens ¢Ù.
Caution:
When removing the light head hold the front
side of the headlight with hand.
5.Remvoal:
.Lamp ¢Ù
Warning
The inflammables is not allowed to approach
the lamp which is on, and the lamp is very hot,
never touch it before cooling.
-51-
6.Installment
.Lamp ¢Ù(new)
Caution
Be sure that the projective part on the lamp
¢Úis engaged with the convex groove ¢Ûon
the light seat.
Caution
Never touch the glass part to avoid the camp
to touch the fuel. Otherwise, the lamp will be
light permeability, service life and Tlluminating
value.If there is some oil, clean off with cloth
mixed with alcohol.
7.Connect
.Light seat ¢Ù
Caution
Make sure that the projective part on the lamp
is engaged with the comex groove on the light
seat.
8.Install the lens to the light seat.
9.Installment
.Headlight
Caution
Install the rubber hole-guard ring of the headlight connecting wire column to the headlight.
10.Connect
.Connecting wire terminal of headlight.
-52-
Section Five Maintainace and Adjustment of Engine
(I)Adjustment of clutch
Adjustment steps:
a.Loosen the locking nut¢Ù
b.Turn the adjusting screw rod ¢Úcounterclockwise slowly up to be unable to turn,then
turn1/8 clockwise, and fasten the adjusting
screw rod¢Úto this position and tighten up the
locking nut¢Ùwith the torque of N.m.
Turn the adjusting screw rod ¢Úcounterclockwise to decreses the clearance of clutch,Turn
the adjusting screw rod ¢Úclockwise to increase the clearance of clutch.
(II)Clean of air filter
Caution
¢Ù
There is a inspection cup ¢Ùon the bottom of
the air filter, if the dust or water deposited in
the cap, clean the filter core and fitter box of
air filter.
1.Remove the cushion (Refer to“cushion removal” of this chapter)
2.Remove the air filter box cover ¢Ù,air filter
components.
¢Ù
-53-
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-45-
(III)Inspection of spark plug
1.Rest the vehicle on the flat ground and lean
the spark plug with compressed air to avoid
the dust entering the engine.
2.Remove the spark plug ¢Ù
The standard spark plug type: DTRTC, If not
correct, replace it.
¢Ù
3.Inspection of spark plug
a.Electrode ¢Ù
Wear/damaged ¡úreplace
b. Insultor¢Ú color
Brown or light brown in normal condition If
the color is clearly different ¡úcheck the
engine.
4.Clean of spark plug
Clean the sprak plug with spark pluger cleaner
of brush.
5.Measure the spark plug clearance ¢Ù, Measure with feeler gause. If out of specification,
adjust.
Spark plug standard clearance:0.6-0.7mm
6.Installment of spark plug
a.Clean the washer surface and spark plug
surface before installing the spark plug.
b.Tighten up the spark plug with hand before
install it according to the specification.
Tightening torque of spark plug:17.5N.m
-55-
(IV)Adjustment of idle speed
1.Rest the vehicle on the flat ground
2.Start the engine and prewarm it at the speed
of 1000-2000r/min, after several minutes, increase the engine speed to 4000-5000r/min.
3.Set the specified idle speed through adjusting the throttle adjusting screw ¢Ù, Screw in
to incresase the engine speed and screw out
to decrease the speed.
Specified idle speed:1450-1550r/min
4.Measure the engine speed with measuring
meter.
5.Make sure that the free clearance of throttle
grip is within 3-5mm. otherwise readjust the
idle speed.
(V)Adjusting ment of free clearance of throttle
grip
Caution
¢Ù
¢Ú
First adjust the engine idle speed when adjusting throttle grip.
1.Rest the vehicle on the flat groud.
2.Inspection
.Free clearance of throttle grip@, If out of
specification ¡úadjust free clearance of
throttle grip:3-5mm
3.Adjustment
Adjustment steps of free clearance of throttle
grip.
a.Loosen the locking nut ¢Ú .
b.Turn the adjusting bolt up to the free clearance of throttle grip @is 3-5mm.
c.Tighten up the locking nut¢Ú.
Caution
After adjusting the free clearance,move the
lever forward and rearward to make sure that
the engine will not lift.
-56-
(VI)Adjustment of speed limitator:
The speed limitator can limit the throttle in full
opening condition when the throttle grip is
pulled to the Max position, screwing the adjuster inward can stop increasig the speed.
1.Adjust speed limiting length@
Adjustment steps:
a.Loosen the locking nut ¢Ù
¢Ù
¢Ú
b.Adjust the adjusting screw ¢Úclockwise or
counterclokwise to make @ obtain the specified length of 12mm.
c.Lock the locking nut ¢Ù
Warning
A.For the beginner of driving, pay extral attention to screw in the speed limitator inward
and screw out with improvement of driving
skill, never remove the adjusting screw of
speed limitator.
b.For the correct throttle grip operation, never
screw out the adjuster to exceed 12mm, and
adjust the free clearance of throttle grip to 35mm.
-57-
(VII)Adjustment of valve clearance.
Caution
The valve clearance should be adjusting only
after the engine is cold, the valve clearance
should be adjusted when the piston is at the
end point position of compress stroke.
1.Removal:
1)Rest the vehicle on the flat ground
2)Remvoe
a.Cushion (Refer to section tow “Cushion
Remvoal”of this chaper)
b.Fuel tank (Refer to section tow “Fuel Tank
Removal”of this chaper)
3)Remove:
a.Timing observation hole screw¢Ù
b.Manual operation start mechanism ¢Ú
4)Remove:
a.valve cap ¢Ù (the side of exhaust valve)
b.valve cap ¢Ú (the side of intake valve)
2.Adjustment
1)Measure the valve clearance
The detailed measure steps are as follows:
a.Turn the crankshaft counterclockwise with
wrench.
-58-
b.Make the mark“T”on the rotor is align with
the mark on the crankcase. When it is done
that is the pistion ties in top dead center(TDC)
c.Inspection of top dead center in pressure
stoke:
(i)When the mark¢Ùon the rotor is align with
the mark ¢Úon the crankcase,the two arms
must have clearance.
(ii)If there is not clearnance, turn the crankcase a circle by counterclockwise to meet the
above requirement.
d.Measuer the valve clearance ¢Ûwith plug
gauge. Adjust the clearance if it is out of
specification.
Intake valve clearance:0.05-0.09mm (normal
temperature)
Exhaust valve clearance:0.11-0.15mm(normal
temperature)
(2)Adjustment of valve clearance:
a.Loosen locking nut¢Ù
b.Insert the Plug gauge spanner ¢Úbetween
the adjusting screw ¢Ûand valve rod.
c.Turn the adjusting screw ¢Û by clockwise
with valve adjusting spanner until the right clearance is gotten to .
Size of valve adjusting spanner :3mm,code
90890-1311
d.Fix the adjusting screw ¢Ûto avoid turning,
and fasten the locking nut ¢Ù.Torque of locking nut is :14N.m
(3)Adjust the valve clearance again:If the clearance is not right, adjust it by repeating above
adjusting steps.
-59-
3.Installation:
Carry out it according to opposite steps of
“Removal”.
(1)Mount:
a.Valve cap ¢Ù (Side of outlet door)
b.Valve cap ¢Ú(Side of inlet door)
Caution
(i)Project of valve cap ¢Ù ¢Úsould be up ¢Û
when mounting.
(ii)Check if O-ring ¢Üis damaged. if any, replace it immediately.
Torque of valve cap: 10N.m
(2)Mount:
a.Oil tank(see Installation of oil Tank in section )
b.Upper cover of oil tank
c.Seat(See Installation of seat in section2)
(VIII)Adjustment of timing chain tension
The engine has automatic adjusting tensioner
on the timing chain tension.So manual adjustment is unnecessary.
-60-
(IX)Inspection of ignition timing
Notice:
Before checking the correct timed ignition
adjust the engine idle speed and free clearance of throttle grip to correct position.
1.Put the vehicle on the flat groud.
2.Start the engine for pre-heating ,and then
stop the engine.
3.Mount induction engine tachometer (9089003113)
4.Mount correct timed ignition meter on connection line of spark plug cap(9890-00314)
5.Inspection of ignition timing.
Inspection steps:
a.Take off plug ¢Ù
b.Start the engine, and make the engine run at
1450r/min-1550r/min idle speed.
Warning
When the engine is running, the machine, oil
maybe splash out, so be careful to start the
engine.
c.Check if the mark ¢Úon the crankcase is in
the range¢Ûof ignition under the magneto rotor indication.If it is out of range, check if the
rotor and pulse coil is loosen or damaged.
(Refer to chapeter 4 electricity)
¢Ù
Caution
Ignition timing can’t be adjusted.
6.Mount plug¢Ù
7.Take off ignition timing meter induction engine tachometer.
-61-
(X)Measuring of compressive force
Caution
Inadequate compressive force will reduce the
engine performance.
Before measuring compressive force. Valve
clearance should be adjusted first (refer to
“Adjustment of valve clearance section).
1.Put the vehicle on the flat ground.
2.Take off spark plug.
3.The following is steps of measuring compressive force:
a.Install pressure gauge
connector.
and change
b.Turn the throttle lever to Max point.
Start the engine with power (battery has
charged enoughly)until no increase of read
pressure gauge.
Warning
When starting the engine, the spark plug must
be connected to ground for avoilding spark.
c.When checking the following ,the read of
pressure gauge:
Compressive force on sea level:
Standard value:9000Kpa(9.0kg/cm2)
Min.Value:800Kpa(8.0kg/cm2)
Max.Value:1000Kpa(10.0kg/cm2)
-62-
d.If the pressure is lower than the min,value:
(i)Drop some oil to action cylinder.
(ii)Measure the pressure again
Compression force(The machine oil has been
filled in the cylinder)
Compressure read
Reason
Piston or piston ring is
worn or damaged
Piston ring, throttle
Read is equal to one
cylinderhead, washer maybe
when no oil
be damaged.
Check if the cylinder head
Read is over max. value throttle surface or piston
top end are carbon laydown.
Read is highter than one
before filling
4.Take off pressure gauge
5.Mount spark plug, Torque of mount is
175N.m
(XI).Inspection of oil quantity of engine
Foreign
No foreign matter in crankcase
1.Put the vehicle on the flat ground
2.Check the quantityof engine oil.If it is
inadequate, fill it.
Inspection steps:
a.Pre-heat engine for several minutes, and then
turn off it.After waiting for more than ten
minutes, return the machine oil into crankcase.
-63-
b.Turn out the dipstick ¢Ùentirely, and clean
it, then insert it¢Ùback into oil hole.
c.Take out the dipstick ¢Ùto check if the oil
level is between the Max. value and the Min.
value ¢Û.
d.If the oil quantity is too small, fill some engine oil to make the oil quantity get to proper
quantity. About recommended oil, see left
diagram.
Caution
Recommended oil type:
U.S.A Petro Association offers: “SE”.
“SF”type equal oil, such as :“SF-SE-CC”“SFSE-SD”etc.
(XII)Replacement of engine oil and inspection
of oil flow.
Caution
Engine oil can be used to lubricate clutch, but
don’t use any chemical additive in machine oi
l, because the additive can lead to clutch out of
work.
Don’t permit any foreign matter into
crankcase.
1.Put the vehicle on the flat ground.
2.Pre-heat the engine for several minutes, then
stop it.
3.Put a container under the engine.
4.Take off oil dipstick, draining plug¢Ùto drain
the engine oil.
Warning
When taking off draining plug, compressure
spring ¢Ûrough filter ¢Üand O-ring ¢Úis easy
to lose. So pay attention to these parts.
5.Take off fire-filter cap ¢Ýfine filter ¢Þ and
O-ring ¢ß.
-64-
6.Inspection
One of parts of O-ring¢Ù , compressure spring
,rough filter ¢Û,fine filter ¢Üis damaged,
repalce it.
7.Cleaning
Clean the compressure spring¢Ú, filter¢Û,filter
¢Ü, filter plug of crankcase¢Ýand filter net cap
with cleaner.
8.Coat the engine oil on the O-ring slightly.
9.Install the fire filter¢Ù, fire filter cap with Oring ¢Úrough filter ¢Ûand draining plug ¢Ü.
Warning
Before installing the draining plug, mount Oring ¢Ý,compress spring ¢Þand fine filter and
be ensure that their mounting order must be
correct.
Mounting torque :fine filter cap:10N.m
draining plug:40N.m
10.Fill machine oil into crankcase
Refer to : “Inspection of Engine oil Quantity”
Appendix:Total:2.2L
Periodic changing oil :1.8L
Oil quantity when cleaning or replacing filter
net: 1.7L
-65-
11.Mount dipstick
12.Pre-heat engine for 5 minutes or more, and
then stop.
13.Check the oil flow
Inspection steps:
a.Loosen the bolt¢Ùof cylinder head lightly.
b.Start the engine for racing until the machine
oil squeeze out from oil tunnel. If there is no
machine oil out for one minute, stop the engine at once for avoiding the engine is
damaged.
c.After the troubleshooting of no oil out is
resolved, start the engine again and check the
oil pressure.
d.Fasten the oil turnnel bolt according to
standard.
Fasten torque of the oil turnnel bolt:7N.m
-66-
Chapter III Repair and Maintenance of Vehicle body
Section 1Rear Driving Gear Case and Driving Shaft
(I)Trouble
.Trouble judging guidance
Performance
1.When the vehicle accelerates, decelerates or is in idle
start, there appears stop or irregular run-out with abnormal
noise (pay attention not to confuse with trouble of engine)
2.The vehcicle sounds obvisous boom at low speed,and
“Wu Wu”sound when decelerating or accelerating. Or there is
regular snap from the case body.
3.The transmission shaft jams and the rear wheel can not
rotate.
Possible reason
A.Damaged bearing
B.Improper clearance
C.Damaged gear
D.Driving shaft breaks
E.Gear teeth break
F.Jam caused by shortage of lubricating oil
G.The gear is jamed by foreign matter
Caution
The reason “A”,“B”,“C”are very difficult to judage ,The performance is very subtle. And it’s very
duifficult to distignguish them form normal operating noise. If you doubt it and think these components
have been damaged, remove them for special inspection.
(II)Inspection
1.Check abnormal noise:
Following noise may indicates mechanism trouble
a.Boom when sliding, accelerating or decelerating.The noise is direct ration with speed of rear wheel,
but not direct ration with higher engine speed and transmission case speed.
b.Noise “Wu Wu ”.The noise is different when accerating or decelerating.
Judgement:May be incorrect assembly and too small teeth clearance.
Caution:
It is very easy to damage the gear if the teech clearance is too small. If this condition happens in trial
driving after reassembly, you should stop driving immediately to minimized the damage of gear.
c.There is light snap when runing at low speed.
Caution:
This noise must be distinguished from normal operating noise of machine.
Judgement: It is possible that the teeth of gear crack.
Warning
If you doubt that the gear teeth crack, should stop driving immediately.Because this may cease that
the transmitting components are jamed by gear fragment and lose control of vehicle, then may damage the
driver.
2.Check following condition:
a. Drain out the lubricating oil
If there is a great deal of metal or metal corpuscle on the position of oil draining screw plug,it is needed
-67-
to check the rust of bearing which will cause jam.
Caution
A little metal corpuscle in oil is normal.
3. Check the oil leakage
Check according to following procedures.
a.Clean the whole vehicle totally, then wipe and dry it.
b.Paint inspecting solvent of oil leakage or dry powder on the transmission shaft
c.Only enough examining distance (Suggestion¡Ý5km)can ensure to examine the leakage.
If leaking-check component.
If damaged-replace component
Caution
1.The oil leakage of new or newer vehcile is caused by improper installation of oil seal or damage of oil seal.
2.To the part you doubt the oil leakage, must check and confirm carefully to avoid unnecessary diassembly.
(III)Trouble-shooting table
If there is basic trouble condition, check following points.
Rise up and rotate the front
wheel to feel if the front wheel
bearing is damaged.
Replace the fornt wheel bearing (Refer to
“Front wheel and front brake”of this
chapter)
Check the rear wheel shaft to
feel if the bearing is damaged
May be no damage of rear wheel shaft
bearing and driving shaft bearing. Recheck
it or remove single component.
Remove the rear wheel shaft,
and check if the bearing is
damaged
Replace the rear wheel shaft bearing (Refer
to “Rear wheel and rear wheel shaft”of this
chapter)
Remove the transmission shaft
components
-68-
(IV)Disassembly
Warning
Support the vehicle firmly and ensure no turnover
1.Drain the oil:
The oil of rear driving gear case
Refer to 3rd section“Replacement of engine
oil of rear driving gear case”of chapter2.
2.Disassemble
1)Cushion
2)Rear luggage carrier
3)Rear fender
Refer to 2nd section“rear fender”of chapter
3.Disassemble
1)Rear wheel(left)
2)Connecting plate of rear wheel
3)Rear wheel(right)
4)Rear brake and rear brake hub
5)Rear wheel shaft
Refer to “Rear wheel/rear brake/rear wheel
shaft”of this chapter
4.Disconnect:
Air pipe ¢Ù (rear driving gear case)
5.Disassemble
rear driving gear case body ¢Ú
Caution
1)When the driving gear case is removed from
the rear wheel fork, the transmission shaft ¢Û
may drop out.
2)Pay attention not to lose these components.
-69-
1.disassembly
¢Ù
a.Remove
bolt¢Ù M6
bolt ¢ÚM8
¢Ú
Caution
Remove the bolts alternately. Loosen each bolt
by 1/4 circle, and remove them after all of them
are loosened.
¢Ù
b. Disassemble:
1)Rear driving gear case body ¢Ù
2)Annular gear pad ¢Ú
3)Shift gear ¢Û
4)Thrust plain pad¢Ü
c.Disassemble:
Bearing gasket(transmission shaft-last grade)
¢Ù
¢Ú
Caution
¢Û
¢Ü
There are left handed thread on the bearing
gasket. Rotating it clockwise may loosen the
bearing gasket.
Caution
When reinstalling the bearing gasket, use special wrench ¢Ù.
¢Ù
-70-
d.Disassemble
Tap the main driving gear lightly with soft
hammer,and remove the main driving gear¢Ù
(with thrust pad ¢Úand bearing ¢Û)
Caution
If it is necessary to replace ace the gear, should
remove the main driving gear firstly. Do not
use the original bearing thrust pad. Replace
them.
e.Disassemble:
1)Oil seal ¢Ù
2)Bearing ¢Ú (shift gear)
Use proper pressure assemble tool ¢Ûto rear
driving gear case, and support it properly.
f.Disassemble:
Bearig ¢Ù(main driving gear)
disassembling procedures:
1)Warm the rear driving gear case to 150¡æ
2)Remvoe the outer circle of bearing with a
proper punching pin¢Ú.
3)Remove the inner circle of bearing of main
driving gear.
Caution
It is very difficult to remove the inner circle of
the main driving gear bearing. In general it is
unnecessary to remove it.
-71-
(V)Inspection
1.Check the gear teeth of bevel gear pair ¢Ù
Cave/scratch /wear ¡úreplace the main driving gear and shift gear in set
2.Check oil seal ¢Ú
3.Check O-ring ¢Û
If damaged, replace it.
4.Check the bearing ¢Ü
If damaged, replace it.
Caution
The bearing can be used repeatedly. But
advise you to replace it.Don’t use the oil seal
repeatededly.
When replacing the main driving gear and
(or)shift gear be sure to adjust them. Refer to
“Pad choice of main driving gear and shift
gear”of this section.
5.Check the transmission shaft¢Ý(spline)
If worn or damaged, replace it.
6.Check the driving gear case body ¢Þand
driving gear case cover ¢ß.
If there is crack or damage, replace them.
¢ß
Caution
When replacing the driving gear case body and
cover, be sure to adjust the pad of main driv¢Þ
ing gear and shift gear, Refer to “Pad choice
of main driving gear and shift gear”of this
chapter.
-72-
(VI)Pad choice of main driving gear and shift
gear
1.Choice of main driving gear pad:
Work out the main driving gear pad
thickness“A”=
=84 add or subtract the number engraved
on the main driving
=83.5 add or subtract the number engraved
on the driving gear case body.
Caution
The unit of all the numbers engraved on the
main driving gear and driving gear case body
is 1/100mm.
For example:
1)If on the main driving gear engraved“+01”
=84+0.01=84.01
1)If on the driving gear case body engraved“10”
=83.5+0.01=83.60
3)So:“A”=0.41
4)Amend the percent digit and chose proper
pad.
In above example, the resulted value is 0.41,
but the meter indicates to amend 1 of percentage digit to 0,so the pad thickness is 0.40mm.
Number on percent digit
Amending value
0,1,2
0
3,4,5,6,7
5
8,9
10
The pad has following thickness.
Main driving gear pad
Thickness
mm
0.15
0.30
0.40
0.50
0.60
-73-
2.Choice of shift gear pad
Shift gear pad ¢Ù
Chosing procedures:
Work out the pad thickness “B”front following formula
“B”= + - +
=45.5adds or subtracts the number engraved on the driving gear case body.
=1 adds or subtracts the number engraved
on the driving gear case cover.
=35 adds or subtracts the number on the
shift gear
=bearing thickness(regarding
unchangeable)=“11.00mm”
For example:
1)The number engraved on the driving gear
case body is “0.7”
=45.5+0.07=45.57
2)The number engraved on the driving gear
case cover is “06”
=1+0.06=1.06mm
3)The number engraved on the driving gear
case cover is “-05”
=35-0.05=34.95
4) 11.00
5)So the pad thickness “B”
“B”=(45.57+1.06)-(34.95+11)=0.68
Number on percent digit
Amending value
0 ¡ ¢1 ¡ ¢2
0
3 ¡ ¢4 ¡ ¢5 ¡ ¢6 ¡ ¢7
5
8 ¡ ¢9
10
The pad has following thickness.
Main driving gear pad
Thickness
mm
-74-
0.25
0.30
0.40
0.50
(VII)Installation:
The procedure is the reversal of
“disassembly”.But pay attention to following
points:
1.Install the needle bearing(small)on main driving gear:
Procedures:a.Warm the case body to 150¡æ
b.Assemble the out circle of needle bearing
with proper holddown.
c.Install the inner circle of the needle bearing
onto the shift gear.
2.Install oil seal¢Ù
3.Install the outer circle of the needle bearing
(bigger) ¢Úof shift gear onto the driving gear
case body.
Warning
Must use new oil seal
4.Install main driving gear ¢Ùpad ¢Úand
bearing¢Û, and install bearing gasket¢Ü. Calculate the size of pad.
Caution
The bearing gasket is left handed, so
tighten it up by rotating counter clockwise.
Before installing the bearing gasket, apply grease on O-ring.
When installing the bearing gasket, tighten
it with special tool.
¢Ù
-75-
Section 2 Front wheel and Front Brake
Technical Parameter
Item
Ser No.
1
Tire specification
2
Rim dimension
Parameter
AT22¡Á7-10
5.5¡Á10
Standard value
3
20KPa(Standard value)
Tire air pressure(normal
Min value
17KPa(Min vlaue)
Max value
23KPa(Max value)
temperature)
4
Radia run-out
2mm
End face run-act
2mm
Run-out
5
Tire wear limit value
2mm
6
Wear limit value of friction wafer
2mm
7
Wear limit value of front brake hub
16mm
(I)Disassembly
1)Pay attention to following points when disassembling front wheels
a:Place the vehicle on a horizontal ground, and
press down the rear brake attaching clamp¢Ù.
b.Loosen the connecting nut¢Ùof front &rear
wheel on the front wheel.
c:Place a bracket under the frame to pick up
the front wheels.
¢Ù
Warning
Support the vehicle firmly and avoid dropping
down.
2)Disassemble the connecting nut ¢Ùof front
&rear wheel.
¢Ù
-76-
¢Ú
3)Disassmeble split pin¢Ù, slotted nut¢Ú,plain
washer ¢Û,front brake ¢Ü and gasket ¢Ý.
4)Disassmeble adjusting nut¢Ù, pin¢Ú, spring
¢Û, circlip ¢Ü spring ¢Ýand circlip ¢Þ.
5)Remove the front brake cable and front brake
air pipe.
¢Ú
6)Disassemble brake shoe assy ¢Ùand front
cover assy ¢Ú.
¢Ù
¢Ú
¢Ù
¢Ý
7)Disasssemble
¢ÙFront brake arm ¢Ù
¢Û
¢Þ
¢ÚWear indicating sheet ¢Ú
¢ÛFront brake cam shaft ¢Û
¢Ü
¢ÜFront brake cam shaft seat ¢Ü
¢ÝRotating pin seat assy ¢Ý
¢ÞBrake cover ¢Þ
-77-
II.Inspecting procedures
1.Check
Front wheel:refer to “Tire inspection”and “Hub
inspection”of chapter2.
2.Measure
Radial run-out of front wheel:If exceeding the
specified limit, replace the front wheel or check
the bearing clearance(¢Ùin figure)
Attached:Rim run-out limit:
Radial run-out 2.0mm(¢Úin figure)
End face run-out 2.0mm(¢Ûin figure)
3.Check:
Tire surface:If worn or damaged, replace it.
Refer to “Tire inspection”of chapter2.
Caution
Install the tire according to direction ¢Ùof
“ROTATION”mark on the tire.
Warning
The tire assembly should be conducted on special equipment. After replacing the tire, conduct curvilinear motion carefully. Must ensure
the tire on the correct position in rim. Otherwise may cause damgage of motorcycle or
driver.
-78-
4.Check
Friction wafer:polish the surface needing
polishment with rough sand paper.
5.Measure
Thickness of friction wafer of brake: if it does
not conform to specified thickness, replace it .
Attached:
Thicknes of friction wafer of brake:4.0mm
Wear limit :2.0mm
¢Ù
Caution
If the worn thickness of any part of friction
wafer exceeds the wear limit specification, it
is needed to replace the brake shoe in set.
(including brake shoe spring¢Ù)
6.Check
Brake shoe tension spring ¢Ù:If worn or
damaged, replace it.
7.Measure:
Inner diameter of front brake hub ( @as shown
in figure):
If it does not conform to specification,replace
it .
Attached:
Inner diameter of front brake hub:160mm
Wear limit:161mm
8.Check
If there is engine oil or scrape on the inner
surface of brake hub, eliminate them.
¢ÙElimination of engine oil :wipe off with cloth
immersed in volatile diluent or volatile solvent.
¢ÚElimination of scrape:wipe it off with
carborundum cloth forcedly and evenly until it
disappears.
-79-
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-08-
(III)Installation procedure:
The installation procedure is the riversal of
“Disassembly ”.But pay attention to following
points:
1.Lubrication:as shown in figure:
¢ÙDust-proof seal
¢ÚBearing
¢ÛCam shaft
¢ÜRotating pin seat
¢Ý“O”sealing ring
Attached:use lithum base grease
Warning
When installing the cam shaft and rotating pin
seat, should apply a little grease firstly. After
installation, wipe off the surplus grease.
2.Install
¢ÙRotating pin seat
¢ÚCam shaft seat
3.Install:
¢ÙBrake cam shaft
¢ÚIndicating sheet
¢ÛBrake cam arm
Caution
When installing the friction indicating sheet ¢Ú
onto the brake cam shaft ¢Ù, should make the
convext part (@)of friction indicating sheet corresponding with concave part ( )of brake cam
shaft.
Make the punching mark on brake cam shaft
¢Ùcorresponding with punching mark of brake
cam arm.
-81-
4.Install
Brake shoe assy
Do not apply lubricating grease on brake friction wafer.
5.Connect
a.front brake air pipe.
b. connect the front brake cable with brake
cover.
6.Install (as shown in figure)
¢ÙCirclip
¢ÚSpring
¢ÛCirclip
¢ÜSpring
¢ÝPin
¢ÞAdjusting nut
7.Install(as shown in figure)
¢ÙFront brake hub
¢ÚGakset, O-ring 17 ¡Á1.8G
¢ÛWasher
¢ÜSlotted nut (torque:70N.m)
8.Install
¢ÙSplit pin
Caution
After the torque is fixed, do not loosen the slotted nut. If the concave slot of the slotted nut
does not aim at pin hole of the screw column,
aim them by tightening up the soltted nut.
Warning
Should use new and complete split pin.
-82-
9.Installment:
When installing the front wheel¢Ù, the fastening torque of connecting nut¢Úof front and rear
wheels is 55N.m.
The rotation direction of front wheel (A) is the
arrow direction marked on the tire.
10.Adjustment
Free clearance of front brake cable
Refer to the “Adjustment of front
brake”section fo chapter Two.
Free clearance of front brake:
The free clearance on the center of right lever
is 5.0-8.0mm.
11.Loosen the brake clip.
-83-
Section 3 Rear wheel/rear brake/rear wheel axle
Technical Parameter
Item
Ser No.
1
Tire specification
2
Rim dimension
AT22 ¡Á10-10
8.5 ¡Á10
Standard value
3
Parameter
25KPa(Standard value)
Tire air pressure(normal
Min value
22KPa(Min vlaue)
Max value
28KPa(Max value)
temperature)
4
-84-
Radia run-out
2mm
End face run-act
2mm
Run-out
5
Wear limit of tire
2mm
6
Wear limit of friction disk
2mm
7
Rear brake hub wear limit
161mm
(I)Removal steps
1.Rest the motorcycle on a flat ground.Press
¢Ù
the rear brake clip ¢Ù.
2.Loosen the connecting nuts of front and rear
wheels.
3.Stop up the front wheel with wood, then put
a proper supporting article under the frame so
as to lift the rear wheel and make the rear
wheel leave the earth.
In order to avoid the parts falling, which will
cause danger, during romoval process, rest
the vehcile firmly.
4.Removal (the Ser. No is corresponding to
the Ser.No on the drawing)
¢Ùconnecting nut of front and rear wheels
¢ÚLeft rear wheel
¢ÛSplit pin
¢ÜRear wheel axle nut
¢ÝWasher
¢ÞRear wheel connecting plate
5.Removal (the Ser.No is corresponding to the
Ser. No on the drawing)
¢ÙConnecting nut of front and rear wheels
¢ÚRight rear wheel
¢ÛSplit pin
¢ÜRear wheel axle nut
¢ÝWasher
6.Loosen the rear brake clip
7.Removal:
Brake shoe assy ¢Ù
-85-
8.Removal:(the ser.No as shown on the
drawing)
¢ÙAdjusting nut, pin and spring of rear brake
arm and rear brake tension rod assy.
9.Removal:
¢ÚRear brake calbe
¢ÛRear brake Tension rod assy
¢ÜAir pipe of rear brake
10.Removal:
¢ÙRear brake bearing block
¢ÚRear brake hub
11.Removal:
¢ÙTension spring
¢ÚRear brake arm
¢ÛBrake indicating plate
¢ÜRear brake cam shaft
12.Removal:
¢ÙO-ring
¢ÚPlain pad of rear brake cover
13.Removal:
¢ÙRear wheel axle:Beat the right end of the
rear, wheel axle slightly, pull the rear wheel
axle from left end.
Caution
Take out the rear wheel axle from the end of
rear wheel axle bushing and gear box with soft
hammer.
Warning
During taking out the rear wheel axle, in order
to protect the thread and gear grouve from
damage, do not beat the rear wheel axle directly with hammer.
-86-
(II)Inspection steps:
1.Inspection
When inspecting the real wheel, refer to “tire
Inspection”,“Rim inspection”Section of chapter Two.
2.Measurement:
a.radial runout of rim
b.tire surface
Refer to“Front wheel and Front Brake
Inspection”Section of this chapter
3.Inspection
¢ÙRear wheel connection plate ¢Ù,If cracks
or damage is found, replace it.
¢ÚInvolute spline on rear wheel connecting
plate
¢ÚIf worn or damaged, replace it.
4.Inspection:
Friction plate of rear brake
5.Measurement
Thickness of brake friction plate
See the “Front wheel and front brake
inspection”Section of this chapter.
Attached:The thickness of brake friction plate
is :4.0mm(0.16in)
<Wear limit>:2.0mm(0.08in)
6.Inspection
Tension spring of brake shoe
See the “Front wheel and Front brake
Inspection”Section of chapter
7.Measurement
Internal diameter of rear brake hub@
If out of the specification, replace the hub
Attached:Internal diameter of rear brake hub:
160mm
<Wear limit>:161mm
-87-
8.Inspection(The Ser.No as shown on the
drawing)
¢ÙInner surface of rear brake hub
If there is some engine oil or scraped markings,
remove it and treat it ,the mothod of treat is as
the follows.
Removal of engine oil:Clean with colth dipped
in volatile diluent or volatile solvent.
Removal of scraped marking:Wipe slightly and
with even force the scraped marking till to remove it.
¢ÚGear groove of rear brake hub
If worn or damaged, replace it.
9.Inspection
¢ÙIf there is some crakes, bend or damage on
the brake cover, replace it.
¢ÚIf the dust-proof seal is worn or damaged,
replace it.
10.Inspection
¢ÙIf there is worn scraped marking or damage on the cam shaft of rear brake, replace it.
¢ÚIf the air pipe of rear brake is clogged, remove this pipe and clean the dirt, if damaged,
replace it.
11.Clean the air hole on the rear brake cover
with compressed air.
12.Inspection of rear wheel axle ¢Ù
a:If the rear wheel axle is heavily scraped or
broken, replace it.
b.If the thread or gear groove on the rear wheel
axle is worn or damaged, replace it.
-88-
13.Measurement
The radial runout of the pisition @on the rear
wheel axle, if out of specification, repalce it.
Attached:The radial runout limit of rear wheel
axle:1.5mm
Warning
If the axle is bent, do not straighten it forcefully.
14.Inspection:
¢ÙBearing on the rear wheel axle
Rotate the rear wheel axle, if the axle shakes
left and right in the bearing or runout axially, It
indicated that the bearing is heavily worn needing to be replaced.
¢ÚIf the oil seal is worn or damaged, replace
it.
Replacement steps of bearing and oil seal:
a.Clean around the bearing of gear case end.
b . R e m o v e t h e o i l s e a l ¢Ùw i t h p l a i n
screwdriver.
Caution
In order to protect the oil seal out edge from
damage during the removal process, place a
wood block ¢Úunder the screwdriver.
Remove the bearing ¢Ûwith corresponding
tool.
The installment of new bearing and oil seal is
in reverse.
Caution
During the installment, the pressing tool of
bearing ¢Üshould be matched with the outer
diameter of bearing outer race ¢ßand that of
oil seal.
Warning
Never beat the inner race ¢Ýand bearing ball
¢Þ, the pressing tool needs to touch with bearing outer race ¢ß .
-89-
(III)Installment steps:
The reversal steps of “removal steps”,that is
installment steps.Pay attention to the following points when installing:
1.Lubrication part
¢ÙOil seal lip of rear wheel axle.
¢ÚBearing of rear wheel axle.
The corresponding spline tooth of rear wheel
axle.
The lubrication oil is lithium base grease.
2.Installment
Installment of rear wheel axle ¢Ù
Caution
Before installing the rear wheel axle, loosen
all bolts on the driving gear case ;hole the rear
wheel axle with hand to make it enter the rgear
groove of gear case, apply on the left end of
the axle slightly with soft hummer.
Warning
In order to protect the axle thread and spline
tooth of axle, never beat the end face of axle
directly with hummer.
3.Installment
Plain pad of rear brake cover
O-ring 30 ¡Á1.8G
4.Labrication of rear brake cam shaft.
The lubrication oil is lithium base grease.
-90-
5.Installment
¢ÙCam shaft of rear brake ¢Ù
¢ÚIndicating plate of brake ¢Ú
¢ÛRear brake arm assy ¢Û
Caution
When installing the brake indicatinig plate¢Ú
to rear brake can shaft ¢Ù,be sure to align the
projective part@of brake indicating plate ¢Ú
with the concave
part of rear brake cam
shaft ¢Ù.
At the same time, align the punch mark
the rear brake cam shaft with that
on
of the
rear brake arm assy ¢Û.
The torque of rear arm assy:9N.m
6.Application
Sealing agent:Be suitable for the rear brake
cover assy and rear wheel axle bushing
surface.
Attached:Sealing agent:P/N:ACC-QUICKGS-KT
7.Installment
¢ÙRear brake cover assy ¢Ù
¢ÚBearing block of rear brake ¢Ú
Caution:
Install the rear brake cover with bolt ¢Û, the
torque of bolt installment is :28N.m.
-91-
8.Installment
Barke shoe assy
9.Lubrication
Dust-proof seal
Lubrication oil for dust-proof seal:lithium base
grease.
Warning
The lubrication oil is not allowed to be used for
brake shoe assy, the lithium base grease is used
for rear brake hub spline groove.
Warning
The lubrication oil is not allowed to be used for
spline on the right end of rear wheel axle,
otherwise, during the work ,the surplus lubrication oil will leave on the brake shoe, affecting the brake performance.
10.Installment:
Rear brake hub
11.Installment(The Ser No. as shown on the
drawing)
¢ÙAir pipe ¢Ù of rear brake
¢ÚRear brake tension rod assy
¢ÛRear brake cable
12.Installment
Spring
Pin
Adjusting nuts ¢Üof rear brake tension rod
assy and rear brake cable.
13.Installment
¢ÙWasher 16
¢ÚNut M16
14.Tighten up nut M16
Attached: ¢ÚTorque of nut M16:150Nm
-92-
15.Installment
split pin4 ¡Á30 ¢Ù
Caution
After fastening the forque, the nut on the rear
wheel axle is not allowed to be loose. If the nut
concave groove is not align with the splint hole
on the screw rod, make it by tightening up the
nut.
Warning
Always use the new split pin
16.Installment
Right rear wheel ¢Ù
Connecting nut of front and rear wheels ¢Ú
Attached:The torque of the connectinig nut of
front and rear wheels is 55Nm.
Caution
The rotating direction of the wheel is the arrow
marking direction on the tire. For this, refer to
“Front wheel and front brake”section of this
chapter.
Warning
When installing the core nut to the rear wheel,
be sure to face its core edge to the wheel.
18.Installment
connecting plate of rear wheel ¢Ù
Wasehr 16 ¢Ú
Rear wheel axle nut M16 ¢Û
Split pin4 ¡Á30 ¢Ü
Left rear wheel ¢Ý
Connecting nut of front andrear wheels ¢Þ
Refer to “Rear wheel”section of this chapter.
19.Adjustment
Rear brake pedal clearance
Rear brake cable clearance
Refer to “Adjustment of left lever and rear brake
pedal free clearance ”Section of chapter Two.
Attached:
Rear brake pedal clearance:20-30mm
Clearance of left lever centre:5.0-8.0mm
-93-
Section 3 Steering Operation System
(I)Removal steps of steering bar
1.Removal
Front luggage carrier
Bumper
Front fender
Refer to chapterTwo.Section Two
2.Removal
Main switch lock wire
“Neutral”indicating light wire
“Reverse”indicating light wire
“High beam”indicating light wire
Clutch switch wire
3.Removal
¢ÙFront brake cable
Remvoal
¢ÚThrottle grip assy
5.Removal
After stopping the vehicle, remove the rear
brake cable ¢Ù
¢Ù
6.Removal
¢ÙSteering bar pipe
¢ÚLower holder of steering bar
-94-
(II)Removal steps of steering vertical column
welding
1.Plain move
¢ÙThe locking part of locking pad as shown
2.Removal
¢ÚBolt M8 ¡Á60
¢ÛLocking washer
¢ÜClip assy
3.Remocal
Install the steering vertical column with split
pin
2.25 ¡Á24
Nut M10
Washer 10
4.Removal
Split pin
Nut M12 ¡Á1.25
Tension rod ¢Ù
Caution
When removing the tension rod end and steering ball pin from the steering vertical column
welding assy and front seat assy of front brake
with common bearing tension tool and other
tools, pay attention to not damage the relavent
parts.
5.Removal
Remove the steering vertical column welding
assy together with steering vertical column
holder.
6.Removal
¢ÙSteering vertical column holder
¢ÚBushing
¢ÛOil seal
-95-
(III)Inspection content
1.Check if the steering bar is cracks bent, is
bent or damaged. If it is, replace it.
2.Inspect if the steering vertical column welding assy is bent or damaged. if it is, replace it
Warning
In order to avoid decreasing the performance
of steering vertical column, if it is bent do not
straighten it frocefully.
3.Inspection
Steering vertical column holder¢Ùand seal ring
¢Ù¢Ú .If they are worn or damaged, replace it.
4.Inspection:
If the tension rod ¢Ùis bent or damaged. If
they are, replace them.
5.Correcting:
The displacement of end head of steering tension rod ball pin assy(Refer to as pin ballas
shown on the drawing).If the free clearance
is found on the ball pin end head ,replace the
ball pin. If the part around the ball pin end head
is uneven, also replace it.
If there is convex point, wear, damage on the
core surface of ballpin end head, replace it.
-96-
6.Adjustment
Assembly length of tension rod
Adjustment steps of tension rod assembly
length
Loosen the connecting nut (A).(B)
Adjusting the assembly length of tension rod
by rotating the tension rod.
Attached:Tension rod assembly length @:
297mm
(A)Right-hand thread
(B)Left-hand thread
Connect (C)position to the steering vertical column welding assy.
Connect (D)position to the front seat assy, the
front brake.
Caution
The connection nut (A)(B)can be tightened
up only when the revealed thread length of
two ends of tension rod are the same.
Attached:Connecting nut torque of tension rod:
30Nm
7.Inspection
If the bearing ¢Ùand O-seal ¢Úunder the
steering vertical welding are worn or damaged,
replace them.
(IV)Installment steps
The reversal steps of “Removal”steps
“Installment”steps, pay attention to the following points during installment.
1.When installing steering vertical column
welding, lubricate the bearing¢Ùand seal ring
¢Úunder the steeing vertical column welding.
-97-
2.Lubricate the steering vertical column holder
¢Ùand seal ring ¢Úduring installing the steering vertical column welding.
3.Installment
Install the seal ring ¢Ùto the steering vertical
column welding, then install bushing¢Ú, finally
install the steering vertical column holder¢Û.
Caution:
Never damage the seal ring when installing.
4.Installment
When installing the steering vertical column
holder and steering vertical cotumn welding
take them as unit ¢Ù.
Warning
In order to ensure the correct circuit of brake
cable and wire, never damage and wind the
cables and wires.
5.Insatllment of left and right tension rod¢Ú
Caution
Make sure that the ball pin ¢Ùat the side of
scraped marking connect with the front seat
assy of front brake.
6.tighten up the nut ¢Ùof ball pin assy.
Attached:Nut torque :25Nm
-98-
7.Mounting split pin¢Ù
Caution
Don’t loosen the nut after the torque is fixed.
If the nut recess is not correspondance with
split pin hole on the double -screw bolt, tighten
the nut to align them.
Warning
Always use new split pin
8.Tighting
After mounting the washer,nut, split pin under
the steering vertical column.
Nut torque:30Nm
9.Install
Clip ¢Ùlocking washer ¢Úbolt ¢Û
Attached:bolt torque:23Nm
Warning
Always use new locking washer.
10.Bent showing supporting lug of locking
washer to lock tightly the bolt.
11.Fill the lubrication oil at the oil cup to lubricate the bearing under the steering vertical
column.Lubricatin oil is Lithium base grease.
-99-
(V)Installation steps of steering bar
1.Install the lower holding seat¢Ù, steering tube
¢Ú and upper holding seat ¢Û.
Warning
When tightening the bolt of holding seat, make
ensure the even of clearance .
Attached:bolt torque:20Nm
2.Install the throttle grip unit
Caution
The projection ¢Ùof throttle grip must correspond to the sunken part ¢Úon the right lever
seat when installation.
Warning
Correct installation of cable and wire is very
necessary for ensuring the safty operation of
vehicle.
Refer to chapter 1“wiring diagram of vehicle”
3.Ajusting the free clearance of brake cable
Refer to “Adjustment of Front brake”and “Adjustment of free clearance about left handle
lever and rear brake pedal ”in chapter2.
4.Adjusting the toe-in of front wheel
Refer to “Adjustment of Front twheel Toe-in”in
chapter2.
5.Mounting front fedner, bumper, front luggage
carrier.
Refer to the second section of chapter2.
-100-
Section 4 Front shock absorber and Front wheel fork
(I)Disassembly:
1.Take off front luggage carrier, bumper, front
feder.
Refer to the second section of chapter2
Disassemble the front wheel front brake hub.
brake shoe unit and front brake cap unit
Refer to “Dischargement of front wheel and
front brake”of this chapter
2.Take off split pin¢Ù, nut¢Ú and steering rod
ball pin assembly¢Û.
3.Take off clip 32 ¢Ù on the front shock
absorber.
4.Loosen the front shock absorber nut ¢Ú.
5.Take off the bolt ¢Ûunder the front shock
absorber nut of front shock absrober ¢Ú and
front shock absrober ¢Ü.
6.Take off split pin ¢Ý, nut ¢Þon the left/right
front seat assy and left/right front seat assy
¢ß.
-101-
7.Check the free clearance of left/right front
wheel fork
Inspection step:
a:Check the parts ¢Ùof let/right front wheel
fork on the frame, if it is bend, crack or worn
repair or replace the frame.
b:Check the torque value of locking nut on
the left/right front wheel fork
Attached:Nut torque value:45Nm
c:Move the left/right front wheel fork from one
side to another to check its side clearance. If
the side clearance is very obvious replace bushing sub-assembly or a set of front wheel fork.
d:Move the left/right front wheel fork up and
down to check its vertical clearance. If the
vertical moving is tight, limited or uneven, replace the bushing sub-assembly or whole front
wheel fork.
8.Take off nut¢Ù, bolt¢Ú, left/right front wheel
fork ¢Ûand bushing sub-assembly ¢Ü.
-102-
(II)Inspection step
1.Check the front shock absorber. If it is leakage ,replace it .Check the universal joint.If it is
crack or damaged,replace the front shock
absorber.
Check spring, if it is fatigue or damage, replace the front shock absorbe.(When checking,
move the spring up and down)
2.Check the front seat assy of front brake, if it
is crack sunk or damaged, replace it.
Warning
If the front axle is bend don’t strighten it in
order to avoid reducing the performance of
front axle on the brake.
3.Check the left/right front wheel fork welding,
if it is crack, bent or damaged, replace it.
Warning
If the left/right front wheel fork welding is bent,
don’t strighten it seriously in order to avoid reducing its performance.
4.Check the bushing sub-assembly ¢Ù, if it is
worn or damaged, replace it.
-103-
(III)Installment steps
The opposit steps of “Disassembly”is the
mounting steps. The following must be paid
attention when mounting:
1.Lubricate the inner surface of bushing subassembly ¢Ù.(Lubrication oil is lithium base
grease).
2.Fix nut
Nut torque:45Nm
Caution
Must ensure the correctionof bolt mounting
direction of left /right front wheel fork, bolt
head position is the position showing on the
drawing¢Ùfront, behind¢Ú that make the bolt
head is outward.
means the vehicle is forward.
3.Mount left/right front seat assy ¢Ù
4.Fix the nut ¢Úof left/right front seat assy.
Attached: Nut torque :25Nm
-104-
5.Mount the split pin ¢Û
Caution
Don’t loosen the nut after marking the standard torque.If the recess on the nut is not correspondence with split pin hole on the bolt,
correct it by tightening the nut.
Warning
Must use new split pin.
6.Mount:
Front shock absrober ,front shock absorber nut
¢Ý,bolt ¢Þunder the front shock absorber.
Caution
Before fixing the front shock absorber nut¢Ý,
Must ensuring the side plane ¢à of universal
joint¢ßis limited by frame limited block.
In order to the head of bolt is forward, the correction of bolt mounting direction ¢Þunder the
front shock absorbe should be guaranted.
7.Tightten the nut ¢Ý,bolt of front shock
absorber ¢Þ
Attached:Nut torque of front shock absorber:
55Nm
Botl torque :78Nm
8.Mount circlip¢ß
9.Mount steering lever ball pin assembly ¢Ù,
nut
¢Úand split pin ¢Û
Attached: Nut torque:25Nm
-105-
Caution
Don’t loosen the nut after markingthe standard torque.If the recess on the nut is not correspondence with the split pin on the bolt, correct it by fixing the nut.
Warning
Must use new split pin ¢Û
10.Mount front brake cap assy brake shoe assy
front brake hub and front wheel.
Refer to “installation of front wheel and front
brake”of this chapter.
11.Adjust front wheel toe-in
Refer to “Adjustment of Front wheel toe-in”in
champer.
12.Mount front fender,safty lever, front carrier,
Refer to the second section of chapter2.
-106-
Section 5 Rear shock absorber and Rear wheel fork
(I)Disassembling steps
1.Take off left rear wheel, rear wheel joint plate
right rear wheel rear brake hub, rear brake
and rear wheel axle.
Refer to “Disassembly of rear wheel/rear
brake and rear wheel axle”section in this
chapter.
2.Take off lower cap ¢Ùof gear case.
3.Take off the rear drivig gear case subassembly ¢Ù
¢Ù
Refer to “Dischargement of rear driving gear
case sub-assembly and driving shaft”section
of this chapter.
4.Take off split pin3.2 ¡Á24 ¢Ù ,washer 12 ¢Ú
and rear shock absorber pin shaft ¢Û.
Caution
When take off rear shock absorber pin shaft
¢Û,hold rear wheel fork in order to rear wheel
fork don’t drop when takingoff the rear shock
absorber pin shaft ¢Û.
-107-
5.Take off nut ¢Ùon the rear shock absorber,
bolt ¢Ú,rear shock absorber ¢Û.
6.Take off rear brake tension spring ¢Ù
7.Take off dusty cap on rear arm axle (¢Ù.¢Ú
point)
8.Check the free clearance of rear wheel fork
checking steps.
a:Check the torque value of rear arm joint bolt
¢Ùand the torque value of rear arm bolt ¢Ú
and nut ¢Ûof rear wheel fork right side.
Attached:Torque of rear arm joint bolt ¢Ùand
nut¢Û is 130N.m
Torque of rear arm joint nut ¢Ú is 6N.m
b:Move the rear wheel fork across to check
the side clearance (A).If the clearance is big,
check the relevant parts of bush bearing 30203
and frame.
Attached:Free clearance value is less than 1.
00mm
c:Move the rear wheel fork up and down to
check the vertical clearance.If the clearance
is too tight limited or uneven, check the relevant parts of bush bearing 30203 and frame.
-108-
9.Take off rear bush ¢Ù
10.Take off driving axle clamp assy(front)¢Ù,
rear arm nut (right side)and rear arm joint bolt.
11.Take off rear wheel fork assy ¢Ù.
(II)Checking steps
1.Check
a:If rear shock absorber is leakage, if any ,
replace it.
b:If rear shock absorber is bent or damaged, if
any, replace it.
c:Pull the spring up and down to check if the
spring fatiguer or damaged,if any, replace rear
shock absorber.
-109-
2.Check if the rear wheel fork assy is crack
bend and damaged, if any, replace it.
Check if the rear wheel bush is crack, bend
and damaged. If there is one of these problems replace it.
3.Check the gear case lower cap, if there is
one of crack bend damagement problems, replace this part.
4.Check the rear arm joint bolt ¢Ù and rear
arm joint botl ¢Úand bush ¢Û.If one of these
parts is worn or damaged, replace it.
5.Check thje bearing 360203 ¢Ù of rear wheel
fork assy, if ther is free clearance during the
bearing matches with the rear wheel fork, or
uneven swirl, replace the bearing.Check the
oil sealing¢Ú,if it is worn or damaged, replace
it.
Replacing steps of bearing 30203and oil sealing .
a:Clean the bearing round
b:Take off the oil sealing ¢Ùwith flat
screwdriver.
Caution
Put a wooden block ¢Úat the outer side in order to protect the outer side.
-110-
Take off bearing ¢Ûwith usually bearing tool
The reverse step of “bearig and oil sealing replacing step”is the mounting step of new bearing and new oil sealing.
Caution
Use a pressure tooling ¢Üwhich is match with
outer diameter of bearing race ¢ßand oil
sealing.
Warning
Don’t strike the bearing inner race ¢Ý and
roller.
The pressure tooling ¢Ü is only contact with
outer race ¢ß .
(III)Mounting steps:
The reverse steps of “disassembly is the mounting step,but the following points must be paid
attention during the installation: ”
1.Lubricate the bearing¢Ù, oil sealing¢Ú,bush
¢Û and rear arm joint bolt ¢Ü.
Lubrication oil is Lithium base grease.
2.Mount the real wheel fork assy, rear wheel
fork bushing and rear arm joint bolt.
-111-
3.Fix the rear arm joint bolt ¢Ù(left),rear arm
joint bolt¢Ú(right)and bush¢Û .
Fixing steps:
a:Fix the left t rear arm joint bolt ¢Ùby standard torque.
b:Fix the right rear arm joint bult¢Úuntil it contact with its bush ¢Û .
Attached:Bolt torque :6Nm
c:Fix right rear arm nut ¢Üby standard torque.
Attached:Rear arm nut torque:130Nm
4.Check rear wheel fork free clearance.
Refer to the 8step in “disassembly”
5.Lubricate the upper and lower end surface
of rear shock absorber(see figure)
Use Lithium base grease as lubrication oil
6.Mount rear shock absorber
Upper nut torque of rear shock absorber :50Nm
7.Mount split pin
-112-
8.Mount the rear driving gear case sub-assembly ¢Ù
Refer to “Installation of rear driving gear case
sub-assembly and driving shaft ”section of this
chapter.
¢Ù
9.Mount the rear wheel axle, rear brake, rear
brake hub, right rear wheel, rear wheel joint
plate and left rear wheel.
Refer to “Installtion of rear wheel/rear brake/
rear wheel axle”section of this chapter.
-113-
Chapter IV Electric Appliance
Section 1 Inspect switch
(I)Inspect switch
Inspect if the circuit between wire end is on
with pocket multimeter. If there is any failure
,replace the switch.
Pocket multimter
Remark
.Adjust the multimeter to “O”before inspecting
.Adjust the multimeter to “ ¦¸¡Á
1”when in-
specting the circuit.
.Should turn on and off the switch many times
when inspecting.
The manual explains how to inspect the switch
The left figure indicate the wire end position
of switch. The vetical line indicates switch
position.
The first row indicates color of switch wore.
To every switch.“O-O”indicates the circuit between the wire ends is on.
¢ÙWhen the siwtch is adjusted to “OFF”.the
“black”and “black/white”wire are on.
¢ÚWhen the switch is adjusted to “ON”,the
“red”and “brown”wire are on.
-114-
Section 2 Check Lamp (headlight)
Check the lamp condition
1.Remove the lamp
Caution
Pay attention to support the lamp seat. Don’t pull the lead wire, otherwise it wil be broke.
Warning
When the headlight light up, please remove the inflammable and your hand from the lamp.Because
it will be very hot,you can touch it only until it is cool.
2.Check if the circuit of lamp teminal is on.
checking steps
**************************************
.Adjust the choice knob of pocket multimeter to
“ ¦¸¡Á 1”
.Connect the multimeter pen to corresponding
lamp wire end. Firstly connect the multimeter
pen(+)to wire end ¢Ùand pen(-)wire end ¢Úto
check the circuit between ¢Ùand ¢Ú.Then connect the multimeter pen(+)to wire end pen (-)
to wire end ¢Û.to check the circuit between ¢Ù
and ¢Û.If it display “ ¡Þ”one time, replace the
lamp.
3.Mount a checked lamp to check the lamp seat.
The same as checking the lamp, connect the
multimeter pen to related lamp seat wire and
check the circuit by the same method as above.
Color indication:
Br-Brown
R-Red
B-Black
B/W-Black/White
Bl/Blue
G-Green
Y-Yellow
Br/W-Brown/White
R/W-Red/White
O-Orange
Sb-Sky blue
G/Y Green/Yellow
W-White
G/Bl-Green/Blue
Y/R-Yellow/Red
Y/G-Yellow/Green
B/Y Black/Yellow
-115-
-116-
Ignition system diagram
24.Controller
23.Automatic air choke
15.Engine stop switch
8.CDI assy
10.Spark plug
7.Magneto
1.Main switch
Section 3 Troubleshooting the ignition system failure
If the ignition system does not work(no spark or spark stops)
Step
Check
1.Spark plug
2.Ignition park clearance
3.Resistance value of spark plug cap
4.Resistance value of ignition coil
5.Engine stop switch
6.Main switch
7.Resistance value of triggering coil
8.Resistance value of charge coil
9.Circuit connection (whole ignition system)
Remark
.Remove following components before
troubleshooting:
1)Cushion
2)Front frame
3)Front fender
Check and repaire with following special tools.
1.Spark plug
.Check the spark plug condition
.Check the spark plug type
.Check the spark plug clearance
Refer to chapter 3 “Check spark plug”
Spark plug clearance
0.6~0.7mm(0.024~0.028in)
correct
Power spark tester:
Ignition tester:
Pocket multimeter:
Standard spark plug
D8RTC
Incorrect
Repair or replace the spark plug
-117-
2.Ignition spark clearance
.Remove the spark plug cap from spark plug
.Connect as shown in figure
¢ÙSpark testing instrument
¢ÚSpark plug cap
¢ÛSpark plug
.Rotate the main switch to “ON”
.Check the ignition spark clearance.
.Press down the starting switch to start the engine.
And increase the spark clearance until the engine
can not be started.
Conformig to specification
Min spark clearance
6.0mm(0.24in)
Ignition system has no problem
Not conforming to specification
or no spark
3.Resistance of spark plug cap
.Remove the spark plug cap
.Connect the pocket multitester to spark plug cap
.Inspect if the resistance of spark plug conform to specification
Resistance of spark plug cap:20¡æ(68¡ã
Not conforming to specification
F)4-7K ¦¸
Replace spark plug cap
conforming to specification
4.Resistance of ignition coil
.Remvoe the ignitioin coil connector from cable
.Connect the pocket multimeter (¦¸¡Á 1)to ignition
coil.
-118-
.Inspect if the resistance of primary coil conforms to specification
Primary coil resistance
At20¡æ(68¡ãF)0.43~0.5 ¦¸
.Connect the multitester£¨¦¸¡Á1K£©to ignition coil
.Inspect if the secondary coil resitance conforms to
specification
Not conforming to specification
Secondary coil resistance
At 20¡æ(68¡ãF)4.6-7.6K ¦¸
Replace ignition coil
All conform to specification
Abnormal
5.Engine stop switch
Refer to “Check switch”
Replce handlebar switch (left)
Normal
Abnormal
6.Main switch
Refer to “Check switch”
Normal
Replace main switch
7.Resistance value of triggering coil
.Remove CDI magneto connector from clabe
.Connect the multitester(¦¸¡Á100) to wire end of
triggering coil
Multitester pen(+)¡úblue wire end ¢Ù
Multitester pen(-)¡úblue wire end ¢Ú
.Inspect if the resistance of triggering coil conforms
Not conforming to specification
to specification
Resistance value of triggering value:
At 20¡æ(68¡ãF)180~220 ¦¸
Conforming to specification
Replace triggering coil
-119-
8.Resistance value of charge coil
.Remove the corresponding connector of charge
coil from cable.
.Connect the mulitester(¦¸¡Á100) to wire end
of charge coil
Multitester pen (+)¡úyellow/green wire end¢Ù
Multitester pen (-)¡úyellow/green wire end ¢Ú
Inspect if the resistance value conform to specification
Coil resistance value
At 20¡æ(68¡ãF)450~550¦¸
Not conforming to specification
Conforming to specification
Replace charge coil
Poor connect
Connect the ignition systen correctly
Correct
replace CDI assy
-120-
-121-
Electric starting diagram
1.Main switch
2.Battery
3.Protecting device
4.Starting relay
5.Starting relay
11.Power off relay
12.Rear brake switch
16.Start switch
20.Neutral switch
Section 4 Running of starting circuit
The starting circuit of this vehicle include starting motor, cut-off relay, rear brake switch and
neutral switch. If the main switch is in position,
the startig motor could be operated only at the
following conditions:
.Driving device is at neutral position(neutral
switch is closed)
.Tension brake switch (rear brake is closed)
When the vehicle is in driving or reverse start,
and the rear brake is in idle start, then the cutoff relay will prevent starting device from
running.On this condition, cut-off relay is
closed, which leading the current can’t reach
to starting motor.
When driving device is at neutral
position.
When rear brake is tensioned
¢ÙBattery
¢ÚStart motor
¢ÛStart relay
¢ÜCut-off relay
¢ÝStart switch
¢ÞRear brake switch
¢ßNeutral switch
(A)To main switch
(B)From main switch
-122-
Section 5 Troubleshooting electric starting system
If starting motor doesn’t work
6.Main switch
7.Neutral switch
8.Rear brake switch
9.Staring switch
10.Circuit connection(Whole starting system)
Pocket-multimeter
Remark
.Remove the following parts before troubleshooting
1)Cushion
2)Front frame
3)Front fender
.Use the following special tool to troubleshoot
No electrification
1.Safety
Refer to “check of switch”
Pass
Incorrect
2.Battery
.Check the battery condition
Refer to “check battery”in chapter 3
Voltage of open circuit
.Clean the battey terminal
At 20¡æ(68¡ãF)12.8V or much more
.Recharge or replace battery
Pass
3.Starting motor
Warning
.Connect positive terminal ¢Ùof battery with cable
.Jumper wire must have the same or bigger loading capa-
¢Ú fo starting motor by wire ¢Û.
bility than battery wire, otherwise it would be burned.
.Inspect the running condition of starting motor.
.This kind of testing is similar to marking electric spark,
therefore, no inflammable air or liquid nearby must be
ensured.
-123-
No rotation
Repair or replace starting motor
4.Power off relay
.Remove the relay from cable
.Connect portable multitester (¦¸¡Á1)and battery (12V)
to wire end of power off relay
Battery end(+)¡úred/white wire end ¢Ù
Battery end(-)¡úgreen/yellow wire end ¢Ú
Multitester pen(+)¡úred/white wire end ¢Ù
Multitester pen(-)¡úblue/white wire end ¢Û
.Inspect if the power off relay is on
Replace power off relay
The circuit is on
5.Starting relay
.Remove the connector of starting relay from cable
.Connect the multimeter (¦¸¡Á1)and battery (12V)to
terminal of power off relay.
Battery wire end(+)¡úblue/white wire end ¢Ù
Battery wire end(-)¡úblack wire direction ¢Ú
Multitester pen(+)¡úred white end ¢Û
Multitester pen(-)¡úblack wire end ¢Ü
The circuit is on
-124-
The circuit is not on
Replace starting off relay
6.Main switch
Refer to “Check switch”
Incorrect
Replace main switch
Correct
Incorrect
7.Neutral switch
Refer to “Check switch”
Correct
Incorrect
8.Rear brake switch
Refer to “Check switch”
Replace rear brake switch
Correct
Incorrect
9.Starting switch
Refer to “Check switch”
Replace handlebar switch (left)
Correct
Incorrect
10.Circuit connection
.Check the circuit connection of whole starting
system
Refer to “Electric diagram”
Connect the whole starting system correctly
-125-
Section 6 Check starting Motor
1.Check
.Reverser
Not clean ¡úClean with #600 sand paper
2.Ensure
.Reverser diameter @
Not conforming to specification ¡úchange the
startig motor
Outer diameter
28mm(1.10in)
(Wear range)
27mm(1.06 in)
3.Measure
.Mica cut sheet
Not conform to specification ¡úScrape the
mica with square scraper
Mica cut sheet:0.7mm(0.028 in)
Remark
Scrap the mica with square scraper to get
proper dimension fit the reverser.
4.Check
.Armature winding (insolation /power on)
Failure ¡úReplce starting motor
**************************************
Check procedure of armature winding
.Connnect the multitester to check power on
¢Ùand insolation¢Ú condition
.Measure the armatur resistance
Inner resistance of armature winding
Power on condition check :At 20¡æ
(68¡ãF)0.004~0.005¦¸
Insolation check :At 20¡æ(68¡ãF)exceed 1M ¦¸
.If the resistance is incorrect, replace the motor.
**************************************
-126-
5.Measure
.Length @of brush (every one)
Out of specification ¡úreplace it
Length of brush:10mm(0.39 inches)
Range of wear:<6mm(0.14 inches)>
6.Measure
.Brushing spring force
Fatigue/out of specification ¡ú replace whole
device
Brushing spring force:326~970g(3.2~3.
8N)
7.Check
.Oil sealing
.Bushing
.O-ring
Wear/damage ¡úrepalce it
Installation of starting motor:
1.Mount
.Magnetic steel
.Bracket
Remark
Mark the matching mark @On the magnetic
steel is align to that on the bracket.
-127-
-128-
Diagram of charqine system
2.Battery
3.Safety
6.Recified adjsuter
7.Magneto
Section 7 No charging in the Battery
Steps
Check:
1.Safety
2.Battery
3.Charging voltage
4.Startor coil
5.Coupling of circuit
(Whole charging system)
Remark
.Remove some parts before maintenance
1)Cushion
.Repair with following special toolings
Coil techometer
Engine techometer
Pocket multimeter
NO.electrification
1.Safety
Refer to “Inspection of switch”
Pass
Replace the safety
2.Battery
.Check battery condition
Refer to “Inspection of Battery”in charter 3
Voltage:
12.8V or more at 20¡æ(68¡ãF)
Incorrect
Correct
.Clean battery terminal
3.Charging voltage
.Recharge or replace battery
.Connect engine techometer to the wire of spark
plug
.Connect pocket tester(DC20V)to the battery
Pocket multimeter(+)¡úWhite terminal
Pocket multimeter(-)¡úWhite terminal
-129-
.Start the engine and accelerate to 2000r/m or so.
Meet specification
Charging voltage:14-15V at 2000r/m
Remark:
Use battery with full capacity
No failure on charging circuit
Oil of specification
4.Resistance value for startor coil
.Take out the lighting coil of AC magneto from inserter
.Connect pocket multiconeter to stator coil(¦¸¡Á 1)
Pocket multimeter(+)¡úWhite terminal
Pocket multimeter(-)¡úWhite terminal
Pocket multimeter(+)¡úWhite terminal
Pocket multimeter(-)¡úWhite terminal
Measure the resistance value of startor coil
Out of specification
At 20¡æ(68¡ãF)11.10-1.50¦¸
Meet specification
Repalce parts of startor coil
5.Coupling of ciucuit
.Check the whole coupling of charging wire.
Refer to “Electric diagram”.
Poor connection
Correct
Connect the charging system correctly
Replace recticed adjuster
-130-
-131-
Diagram of lighting system
1.Main switch
2.Battery
3.Safety
13.Tail light
17.Lamp switch
18.Headlight
Section 8 Troubleshooting
If the headlight or taillight is not work
Steps
Check:
1.Safety
2.Battery
3.Main switch
Remark:
.Remove out the following parts before maintenance of troubleshooting
1)Cushion
2)Front luggage carrier
3)Front covering parts
.Use special toolings for troubleshooting
4.Lamp switch
5.Coupling of wires(for entire lighting system)
Pocket multimeter:P/N YU-03112
90890-03112
No electrification
1.Safety
Refer to “Inspection of switch”
Pass
Replace fuse
2.Battery
.Check the battery condition
Refer to “Inspection of battery”in chapter 3
Incorrect
Voltage of open circuit
12.8V or more at 20¡æ(68¡ãF).
Correct
3.Main switch
.Clean terminal of battery
.Recharge or replace battery
Incorrect
Refer to “Inspection of switch”
Correct
Replace main switch
*
-132-
*
Incorrect
4.Switch for lamps
Refer to “Inspection of switch”
Correct
If the lamp switch is failure replace the switch
of handle(left)
5.Coupling of wires
.Check the wire compling or whole lighting system
Poor coupling
Refer to “Diagram”
Correct
Connect whole lighting system correctly.
Check the returning condition of each lighting
system. Refer to “Inspection of Lighting System”.
-133-
Section 9 Inspection of Lighting system
(I)If the headlight is out of work
1.Bulb and bulb socket
.Check the bulb and bulb socket condition
No electrification
Replace bulb and bulb socket
2.Voltage:
Connect multimeter to the coupler of headlight socket(DC,20V)
A
B
Multimeter(+)¡úgreen terminal ¢Ùor yellow
terminal ¢Ú
Multimeter(-)¡úblack terminal ¢Û
A When lamp switch is adjusted to LO position.
B When lamp switch is adjusted to HIposition.
.Adjust main switch to “ON”position.
.Adjust main switch to “ON”or
“HI”position.
.Check the voltage of
“green”and“yellow”wires in coupler of bulb
socket.
Meet specification
No failure on circuit
-134-
Out of specification
There is failure on the circuit from main switch
to bulb socket coupler. Repair it.
(II)If the taillight is out of work
1.Bulb and bulb socket
No electricfication
.Check if the bulb and bulb socket is correct
Meet specification
Replace bulb and bulb socket
2.Voltage
.Connect the pocket tester (DC 20V)to the
terminal of taillamp.
Multimeter (+)¡úblue terminal ¢Ù
Multimeter (-)¡úblack terminal ¢Ú
.Adjust main switch to ON postion
.Adjust lamp switch to “LO”or “HI”postion
.Check the voltage of blue wire in coupler of
Out of specification
bulb socket(12V)
Meet specification
There is failure on the circuit from main switch
to bulb socket coupler. Repair it.
No failure on this circuit
-135-
-136-
Diagram of signal system
1.Main switch
2.Battery
3.Fuse
12.Rear brake switch
14.HB indicated lamp
17.Lamp switch
19.Neutral indicated
20.Neutral switch
21.Reverse indicated lamp
22.Reverse switch
Section 10 Troubleshooting
(I)If indicated lamp is out of work
Steps
Check:
1.Safety
2.Battery
4.Coupling of wires
3.Front switch
(Whole signal system)
Pocket multimeter
Remark:
.Remove the following parts before
troubleshooting.
1)Cushion
2)Front frame.
3)Front pedal
.Use special toolings for trouble shooting
1.Satety
No electrification
Refer to “Inspection of switch”
Correct
Replace fuse
2.Battery
.Check the battery condition
Refer to “Inspection of battery”in chapter 3.
Volatage of open circuit
Incorrect
12.8V or more at at 20¡æ(68¡ãF)
Correct
.Clean battery terminal
.Recharge or replace battery
*
-137-
*
Incorrect
3.Main switch
Refer to “Inspection of switch”
Correct
Replace main switch
4.Coupling of wires
.Check the coupling of whole signal system
wires
Poor connection
Refer to “Diagram of wires”
Correct
Connect it correctly
Check each signal system condition
Refer to“Inspection of signal system”
-138-
Section 11 Inspection of Signal system
(I)If the neutral indicated lamp is out of work
1.Bulb and bulb socket
No electrification
.Check if bulb and bulb socket circuit is correct
Replace bulb and/bulb socket
Correct
No electrification
2.Neutral switch
Refer to “Inspection of switch”
Correct
Replace neutral switch
3.Voltage
.Connect pocket tester (DC 20V)to the terminal of bulb socket
Multimeter (+)¡úbrown terminal ¢Ú
Multimeter (+)¡úsky blue terminal ¢Ù
.Adjust main switch to “ON”position.
.Check voltage (12V)
Out of specification
Meet specification
No failure on this circuit
If there is failure on the circuit from main
switch to the bulb socket coupler, repair it.
-139-
(II)If the reverse indicated lamp is out of work
1.Bulb and bulb socket
No electrification
.Check if bulb and bulb socket is correct
Pass
Replace bulb and bulb socket
No electrification
2.Reverse switch
Refer to “Inspection of switch”
Pass
Replace reverse switch
3.Voltage
.Connect pocket multimeter (DC 20V)to the
taillight terminal
Multimeter (+)¡úbrown terminal ¢Ú
Multimeter (+)¡úgreen/bule terminal ¢Ù
.Adjust main switch to “ON”position.
.Check voltage (12V)
Out of specification
Meet specification
No failure on this circuit
-140-
If there is failure on the circuit from main
switch to the bulb socket coupler, repair it.
(III)If the HB indicated lamp is out of work
1.Bulb and bulb socket
No electrification
.Check if bulb and bulb socket circuit B are
correct.
Replace bulb and bulb socket
Pass
2.Reverse switch
No electrification
Refer to “Inspection of switch”
Pass
Replace handlebar switch(left)
3.Voltage
.Connect pocket tester (DC 20V)to the taillight terminal
Multimeter (+)¡úbrown terminal ¢Ù
Multimeter (+)¡úgreen/bule terminal ¢Ú
.Adjust main switch to “ON”position.
.Check voltage (12V)
Out of specification
Meet specification
No failure on this circuit
If there is failure on the circuit from main
switch to the bulb socket coupler, repair it.
-141-
Chapter V Engine
Section 1 Disassembly of engine
(I)Remove the engine from finished ATV
1.Remvoe
.Cushion
.Front luggage carrier
.Front bumper
.Front fender
.Rear luggage carrier
.Rear fender
The disassembling method refers to “Fender,
fuel tank disassembly” of chapter II.
2.Oil draining
Screw out oil draining screw plug. Drain off
the lubricating oil of the engine from the oil draining hole.
3.Exhaust pipe and sillencer
1)Remvoe
.Exhaust pipe ¢Ù
2)Remvoe
Silencer ¢Ú
4.Carburetor and air intake pipe
Place the throttle cock grip on “OFF”postion,
and remove:
.Throttle cable ¢Ù
.Oil pipe ¢Ú
.Hoop ¢Û
.Carburetor, carburetor seat and hook hitch assy
¢Ü.
Caution
Before disassembling., drain off the gasoline of
the carburetor float cabinet firstly. Wrap the
overflow pipe with cloth to absorb the splashed
gasoline. The gasoline is inflammable, Pay attention not to splash the gasoline on hot engine.
5.Starting motor
1)Remove
.Starting motor line ¢Ù
-142-
2)Remove
.Connecting plate of sharting motor¢Ú
.Starting motor ¢Û
6.Rear brake cable and footrest
1)Remove
.Adjusting nut ¢Ù
.Pin ¢Ú
.Spring ¢Û
.Rear brake cable and tension rod¢Ü(Remove
from rear brake arm)
2)Remove
.Left footrest ¢Ù
.Shift pedal ¢Ú
.Supporting rod of front fender¢Û
3.Remove
.Right footrest ¢Ù
.Spring ¢Ú
7.Wire and hose
1)Remove
.Spark plug cap
.CDI magneto wire ¢Ù
.Reverse switch wire ¢Ú
.Neutral switch ¢Û
.Air pipe ¢Ü
-143-
8.Rear driving unit and rocker(rear wheel fork
and shock absorber)
1)Remvoe
.Remvoe the air ¢Ù(air case of last grade and
rear brake hub)from the clip on the frame.
.Fix the front wheel and raise up the rear wheel
(place the supporter on the frame)
2)Remove
.Bolt ¢Ù(upper end of the rear shock absorber)
3)Remove
.Hoop ¢Ù(rubber hood)
.Dustproof cap of rear arm shaft ¢Ú
.Rear arm nut ¢Û(right)
.Connecting screw column of rear arm ¢Ü
(right)
Connecting bolt of rear arm ¢Ý (left)
4)Remove
.Rear wheel driving unit /rocket assy
Caution:
.When disassembling the rocker assy, support
the shock absrober to avoid droping down.
.When removing the rocker from the rubber
hood, the driving shaft may drop down,Pay
attention not to lose components.
9.Disassembly of engine
1)Remove
.Bolt¢Ù (top supporting of engine)
.Bolt ¢Ú(bottom supporing of engine)
.Bolt¢Û(rear upper supporting of engine)
.Bolt¢Ü(rear lower supporting of engine)
2)Remove the engine unit from right side
-144-
(II) Disassembly of engine
1.Remove
.Hand starting unit ¢Ù
¢Ù
2.Remove
.Screw ¢Ù¢Ú¢Û
.Reverse controlling bar unit¢Ü
.Wahser
Pay attention not to lose washer
3.Remove
.Sproket cabinet cover ¢Ù
¢Ù
4.Remove
¢Ú
¢Û
.Spark plug¢Ù
.Upper valve cap(intake)¢Ú
.Lower valve cap(exhaust)¢Û
¢Ù
-145-
5.Remove
.Chain tensioner ¢Ú
¢Ú
Caution:
¢Ù
Before removing the chain tensioner, loosen
the screw ¢Ùfirstly.
6.Remove
.Bolt
Timing sproket
¢Ù
¢Ú
Caution:
¢Û
.When loosening the bolt, it is needed to fix
the hand starting ratchet ¢Ü
.Grasp the metal wire ¢Ûto avoid the timing
¢Ü
chain to drop into crankcase.
7.Remove
.All the bolts and nut on the cylinder cover.
¢Ú
¢Û
Caution:
Loosen every bolt and nut by1/4 circle, then
¢Ù
¢Ü
disassembly
.Loosen them, from big one to small one according to the numbers marked on the cylinder cover.
¢Þ
¢Ý
8.Remove
¢Ù
.Cylinder cover unit ¢Ù
.Cylinder cover pad ¢Ú
.Location pin ¢Û
.Oil seal ¢Ü
.Lower guide plate ¢Ý(exhaust side)
¢Ý
¢Û
¢Ü
¢Ú
¢Û
¢Û
-146-
9.Remove
¢Ú
.Screw ¢Ù (cylinder body)
.Cylinder body assy¢Ú
¢Ü
¢Ü
.Cylinder body pad¢Û
.Location pin ¢Ü
¢Û
¢Ù
¢Ý
¢Ù
.O-ring ¢Ý
10.Remove
.Circlip¢Ù
.Piston pin¢Ú
.Piston unit ¢Û
¢Ù
.Before disassembling the piston pin circlip,
¢Ú ¢Ù
¢Û
cover the crankcase with a clean cloth to avoid
the circlip to drop into case suddenly.
.Before disassembling the piston pin, remove
the burr of circlip groove and pistion pin. If it
¢Ú
is still difficult to remove the piston pin, remvoe
it with drawing aid
.Do not remove the piston pin with wood hammer
¢Ù
11.Remove
.Starting ratchet ¢Ù
Caution
Fix the starting ratchet with special tool, and
loosen the bolt on the starting ratchet.
12.Remove
.Left crankcase cover ¢Ù
-147-
13.Remove
.Gasket of left crankcase cover ¢Ù
.Location pin ¢Ú
.Intermediate gear shaft ¢Û
.Washer ¢Ü
.Duplex intermediate gear(starting motor)
14.Remove
.Magneto ¢Ù
Caution:
Disassemble the magneto rotator with special
tool
¢Û
¢Ú
15.Remove
¢Ù
.Semicircle key ¢Ù
.Electric starting gear assy ¢Ú
.Washer ¢Û
¢Ù
16.Remove
.Upper guide plate ¢Ù(air intake side)
¢Ú
.Timing chain¢Ú
¢Ù
17.Remove
.Screw ¢Ù(rear cover)
-148-
¢Ù
18.Remove
.Screw ¢Ù(rear driving cover)
¢Ú
.Rear driving cover ¢Ú
¢Ù
¢Ú
19.Remove
.Output shaft unit ¢Ù
¢Ù
.Location pin ¢Ú
¢Ú¢Û ¢Ü
¢Ù
20.Remove
.Output shaft assy ¢Ù
.Bearing ¢Ú
.Washer ¢Û
.Forward gear ¢Ü
¢Ü
21.Remove
¢Þ
¢Ù ¢Û
.Fine filter cover of engine oil¢Ù
¢Ú
.Fine filter of engine oil¢Ú
.O-ring ¢Û
.Right crankcase cover ¢Ü
¢Ý
.Location pin ¢Ý
.Gasket of right crankcase cover ¢Þ
22.Remove
¢Ü
¢Û¢Ú
¢Ù
.Compressing spring¢Ù
..Upper cam plate assy ¢Ú
.Steel ball bracket assy ¢Û
.Lower cam plate ¢Ü
-149-
23.Remove
.Main clutchnut ¢Ú
Caution
Loosen the locking pad¢Ùbefore removing the
nut, and fix the main clutch shoe¢Ûwith special tool¢Ü, then remove then nut.
24.Remove
.Locking pad ¢Ù
.Main clutch shoe unit¢Ú
.Washer ¢Û
¢Ý
¢Û
¢Ú
¢Ü
.Main clutch housing unit¢Ü
.Washer ¢Ý
¢Ù
Caution
¢Ù
The two are grooves ¢Ùon auxiliary clutch
when installing the main driving gear ¢Ú.So
when removing the main clutch unit, must
aim any one of the two are grooves at the
main driving gear firstly.
25.Remove:
.Nut ¢Ù
¢Ú
.Ouput gear ¢Ú
Caution
.Slap flat the self-locking part of the nut
.Place the engine to 1st gear to operate
.When loosening the nut(output gear),must fix
¢Ù
the auxiliary hub assy ¢Üwith special tool.
¢Ù
¢Ü
26.Remove
.Clutch post rod ¢Ù
.Bearing ¢Ú
¢Ú
.Compressing cover ¢Û
¢Û
-150-
.Clutch spring ¢Ü
27.Remove
.Nut ¢Ú (clutch hub assy)
Caution
Slap the locking washer¢Ùflat before removing the nut. Must fix the clutch hub assy ¢Û
with special tool when screwing the nut.
28.Remove
¢Ù
¢Ú ¢Ü
¢Û
.Locking washer ¢Ù
.Clutch hub assy ¢Ú
¢Þ
¢Ý
¢ß
.Friction wafer ¢Û
.Clutch piece ¢Ü
.Compressing plate ¢Ý
.Spline washer ¢Þ
¢Ù
.Clutch gear assy ¢ß
¢Ú
29.Remove
.Right connecting case ¢Ù
.Location pin ¢Ú
.Gasket of right connecting case ¢Û
30.Remove
.Oil pump unit¢Ù
.Pad
¢Ù
-151-
31.Remove
.Shift lever unit¢Ù
.Washer ¢Ú
.Limit torsion spring¢Û
.Limit lever unit¢Ü
Caution
Pull the limit lever unit and shift lever unit along
the arrow direction, then you can remove them
from the star-shaped gear.
32.Remove
.Star-shaped gear ¢Ù(on shift cam)
Caution
.The location pin is easy to drop down. pay
attention not to lose it.
¢Ù
33.Remove
.Nut ¢Ú (balance shaft gear)
Caution
.Slap the locking washer¢Ùflat before removing the nut
.Put a cloth¢Ûfolded thickly between the balance shaft gear ¢Üand balance shaft driving
gear ¢Ýfor seizing to prevent the rotation of
the two gears when removing the nut.
¢Ü
¢Ý ¢Ú¢Ù
-152-
¢Û
34.Remove
.Locking washer ¢Ù
.Balance shaft gear ¢Ú
.Flat key ¢Û
¢Ú
¢Û
¢Ù
35.Remove
.All the closing case screw.
Caution
Loosen every screw1/4 circle with cross-slot
screwdriver, then remove all of them
36.Remove
.Left crankcase ¢Ù
.Location pin ¢Ú
Caution
.Disassemble the left crank case with crankcase separator.
.Tighten up the screw of separator, and must
keep th separator body parallel with crankcase face. If necessary, screw the screw in
reverse direction to adjust the separator body
level.
.When appling force to case body separator,
knock the front supportor of engine, shift shaft
and balance shaft alternatly and continuely.
¢ß
¢Ù
¢Ü
¢Ú
¢Þ
37.Remove
.Long fork shaft ¢Ù
.Short fork shaft ¢Ú
.Shift cam shaft ¢Û
.Fork 3 ¢Ü
.Fork 2 ¢Ý
.Fork 1 ¢Þ
¢Û ¢Ý
Caution
Pay attention to position of every part, especially the position and direction of every fork.
-153-
38.Remove
.Main shaft assy and driving shaft unit¢Ù
¢Ù
.Washer¢Ú(driving shaft unit)
39.Remove
.Circlip¢Ù
.Balance shaft driving gear ¢Ú
.Crankshaft ¢Û
.Semicirlcle key¢Ü
Caution
.Press out the crank shaft with pressure device.
40.Remove
.Stop plate ¢Ú
.Pressing plate ¢Û
¢Ù
¢Ú
Caution
Knock the locking part ¢Ùof stop plate flat
before removing the stop plate.
¢Û
41.Remove
.Distribution cam shaft ¢Ù
Caution
.Screw in the bolt¢Ú10mm to cam shaft screw
hole to draw out the distribution cam shaft.
-154-
42.Remove
.Rocker shaft ¢Ù
.Air intake and exhaust rocker ¢Ú
Caution
.Screw the slip hammer assy into rocker shaft,
then pull out the rocker.
43.Remove
.Valve lock clip¢Ù
Caution
.Disassemble the valve lock clip with valve
spring compressing device.
44.Remove
.Valve spring cover ¢Ù
.Valve outer spring ¢Ú
.Valve inner spring ¢Û
.Valve ¢Ü
.Oil seal of valve rod ¢Ý
.Spring seat of valve ¢Þ
Caution
.Pay attention to position of each component
for installation to original position.
45.Remove
.Starting lever cap ¢Ù
.Starting lever ¢Ú
¢Ú
¢Ù
¢Ü
Caution
.Before uniting the knot ¢Û,pull out the rope
long enough to tie a knot to avoid to be pulled
into the cap
¢Û
¢Û
¢Ù
¢Ú
¢Ù
¢Ü
¢Ý
¢Þ
¢Ý
¢Þ
46.Remove
.Screw pin ¢Ù
.Guide plate ¢Ú
.Compressing spring¢Û
.Circlip¢Ü
.Driving jaw ¢Ý
.Torsion spring¢Þ
-155-
47.Remove
.Coiling spring¢Ù
¢Ú
.Coiling spring backboard¢Ú
.Driving plate assy ¢Û
.Left sidecover assy ¢Ü
¢Ù
¢Û
¢Ü
48.Remove
.Pressure plate ¢Ù
¢Ù
Caution
.Remove the screw with impact screwdriver
49.Remove
.Bearing ¢Ù
.Washer ¢Ú
¢Ú
50.Remove
.Circlip¢Ù
¢Ù
.Rear joint ¢Ú
Caution
The disassembling method of rear joint is as
following:
.Pull and press the driving fork downward
.Use a sleeve with proper diameter below the
¢Ú
front joint, and press the earing into the sleeve
as shown as figure.
.Repeat the procedure to corresponding bearing
¢Ù
-156-
.Repeat the driving fork and rear joint ¢Ú.
51.Remove
.Nut ¢Ù
.Washer ¢Ú
.Front joint¢Û
¢Ù
¢Ú
¢Û
Caution
Clamp the front joint with gymbals, then loosen
the nut.
¢Ú
¢Ù
52.Remove
.Output shaft ¢Ù
.Connecting jaw ¢Ú
53.Remove
.Inner-hexagon screw bushing ¢Ù
.Bearing ¢Û
.Washer ¢Ü
¢Ü
¢Û
¢Ù
¢Ú
Caution
Use inner-hexagon screw bushing wrench ¢Ú
¢Ú
¢Ù
¢Ü
¢Û
54.Remove
.Irregular left handed nut ¢Ù
.Reverse gear ¢Û
.Washer ¢Ü
Caution
.The irregular left handed nut is left handed
screw thread, Rotate the nut clockwise when
loosening it.
.Use irregular nut wrench ¢Ú
-157-
55.Remove
.Nut ¢Ù
.Bearing ¢Û
Caution
¢Ù
¢Û
¢Ú
Use inner-hexogon screw bushing wrench ¢Ú
56.Remove
.Reverse fork shaft ¢Ù
¢Ù
¢Ú
.Reverse fork ¢Ú
.Steel ball¢Û
¢Û
.Compressing spring¢Ü
¢Ü
Caution
When disassembling the reverse fork shaft, the
steel ball is easy to rollout. Pay attention not to
lose it.
57.Remove
¢Û
.Circlip¢Ù
¢Ú
¢Ù
.Reverse controlling rod¢Ú
.Reverse controlling rod¢Û
.Reverse controlling shaft ¢Ü
¢Ü
-158-
Section 2 Inspection and Maintenance of Engine
1.Cylinder cover
1)Clean
.Carbon eposit
Use circular scraper ¢Ù
Caution
Please do not use sharp tool to avoid scraping
.Nut of spark plug
.Valve seat ring
.Bottom face of cylinder
2)Measure
.Flatness of cylinder cover bottom face
Recorrect the bottom face or replace if unqualified
Flatness of cylinder bottom face is less than 0.
10mm(0.004in)
2.Intake and exhaust valve
1).Check
.Valve surface
.Valve rod end
Repalce it if it is worn, exfoliation corroded or
unqualifled
Min thickness (working limit)
0.8mm(0.031in)
Slope
0.05mm(0.020in)
Min length (working limit)
4.0mm(0.157in)
2)Check
.Valve rod end ¢Ù
Repalce the valve, valve guide pipe and valve
rod oil seal if it is mushroom-shaped or its diameter is bigger than other rod diameter.
Caution
Remove the deformation of valve rod end ¢Ù
by polishing the valve end with oilstone.
-159-
3)Measure
.Rod part run-out of valve rod
Replace it if unqualified
The rod part run-out of valve rod is less than
(0.03mm0.0012in)
4)Measure
.Clearance between valve rod and valve guide
pipe
Clearance=A-B
Inner diameter of valve guide pipe A
Valve rod diameter B
Repalce the valve or valve guide pipe if
unqualified.
Measure with micrometer and inner diameter
gauge ¢Ù
Clearance between valve rod
and valve guide pipe
Intake
0.010~0.037mm
valve
(0.004~0.0015 in)
Exhaust
0.025~0.052mm
valve
(0.0010~0.0020 in)
Limit
0.08mm
(0.0031 in)
0.10mm
(0.0039 in)
Caution
.When replacing the valve, should replace the
valve guide pipe and valve rod oil seal together.
3.Valve guide pipe
1)Check
.Valve guide pipe
Replace it if it is worn or the oil leaks into the
cylinder
2)Disassemble
.Valve guide pipe
Use valve guide pipe diassembling device¢Ù
Caution
Place the cylinder cover in the furnace to heat
to 100¡æ(212F)for the econvience of disassembly and installation of valve quide pipe. And it
can ensure correct installating clearance.
-160-
3)Install
.Circlip ¢Ù(new)
.Valve guide pipe ¢Ú(new)
Use the installing and disassembling device of
valve guide pipe
4)Ream the inner diameter of valve guide pipe
to get proper valve rod clearance.
Caution
Regrind the valve race after installing valve
guide pipe
4.Valve race
1).Clean
.Carbon deposit(valve raue and value face)
2)Check
.Valve seat ring
Regrind the valve if it is exfoliation corroded.
3)Measure
.Contacting width of valve and valve race.
Regrind the valve race if unqualified.
.Paint red lead powder on the valve fit pyramidal foce of valve race
.Place the valve into the cylinder cover.
-161-
.Press the valve on through valve guide pipe
to leave clear trace on the valves.
.Remove the valve from cylinder cover
.When the valve contancts with valve race,
the redle is marked on the valve form vavle
race, Then can measure the contacting width
of valve and valve race.
Contactingwidth of valve
and valve race
Limit
0.9~1.1mm
(0.035~0.043mmin)
1.6mm
(0.063in)
Intake
Exhaust
.If the contacting width is too wide, too narrow or not in the middle, it is necessary to
recorrect valve race
4)Correct
.Valve race
Use reamers of30¡ã.45¡ã and60¡ã
Caution
Rotate the reamer with even force to avoid
cutting mark. And remove surplus part to get
ideal valve race.
Reamer used on each part
Part
Reamer
A
30¡ã
B
45¡ã
C
60¡ã
Valve race correcting procedure
The contacting part A is in the middle of valve
face. But the contacting width is too wide.
Reamer assy of valve race
Operate
lightly
-162-
Result
Reamer 30¡ã
Reduce the contacting
Reamer 60¡ã
width to 1.0mm(0.04 in)
The contacting part B is the middle of valve
face. But the width is too narrow
Reamer assy of valve rale
Use
Reamer 45¡ã
Result
Get unified contacting width
1.0mm(0.04 in)
The contacting part C is too narrow, and on
the upper edge of valve face
Reamer assy of valve rale
Use
Result
Reamer 35¡ã Make the contacting part in
the middle and get the conReamer 45¡ã tacting width 1.0mm(0.04in)
D The contacting part is too narrow and on
the bottom of valve.
Reamer assy of valve rale
Use
Result
Use reamer of 30¡ã Make the contacting part in
firstly
Reamer of 45¡ã
the middle and increase
the width
5)Grind
.Valve face
.Valve race
Caution
Should grind the valve face and valve race
after correcting the ralve race or replacing
valve and valve guide pipe.
Grinding procedure of valve face
.Paint a layer of grinding powder¢Ù
Caution
Ensure no grinding power entering the clearance between the valve and valve guide pipe.
-163-
.Pain molybdenum disulfide oil on the valve
Apply molybdemum
disulfide oil
rod part.
.Place the valve into the cylinder cover
.Rotate the valve to grind in with seat fully on
the valve face, then clean the dirty
.repeat procedure until the contacting width
of valve face and valve seat
In order to get the best grinding quality, you
may slap the valve lightly when rotating the
valve forward and backward.Be sure to clean
all the dirty on the valve face and valve race
after every grinding.
6)Measure the contacting width again after
correcting and grinding
.Meassure the contacting width and position
of valve and valve race again according to
method explained in3
.If the contacting width and position do not
conform to specification yet, recorrect and
grind the valve race.
5.Valve spring
1)Measure
.If the free length @(inner and outer spring)
of valve spring unqualified, replace it.
Free length of valve spring
-164-
Inner spring(intake/exhaust)
Outer spring(intake/exhaust)
35.5mm(1.4 in)
37.2mm(1.46 in)
2)Measure
n o i t a l l a tpressure
snI
.Installing
of valve spring
htgnel
If unqualified, replace the inner and outer
spring totally.
Installing pressure of valve spring
When it is 30.5mm(1.2 in),the
Inner spring(intake/
pressure8.4~10.2kg(18.5~22.
exhaust)
5pods)
Apply nolybednum
disulfide oil
Apply molybdenum
disulfide oil
When it is 32.0mm(1.26 in),the
Outerspring(intake/
pressure16.6~20.4kg(36.6~45.
exhaust)
0pods)
6.Seal check of valve
1)Installation of valve
Lubricate
.Valve rod part ¢Ù
.Valve rod oil seal ¢Ú
Install
.Valve spring seat ¢Ù(Lower part)
.Oil seal of valve rod ¢Ú
.Valve ¢Û
.Inner spring ¢Üof valve
.Outer spring ¢Ýof valve
.Spring cover ¢Þ of valve
.Locking clip ¢ßof valve
-165-
Caution
Must install the long pitch end of all valve
spring upward.
2)Check the valve seal
If there is leakage on the valve face, repair
again and regrind or replace the valve and
regrind.
Inspecting procedure of valve seal
.Inject the clean solvent ¢Ùinto intake way and
exhaust way respectively.
.Check the valve seal. There should be no leakage on valve race ¢Ú.
3)Regrinding procedure
.Remove components of the cylinder cover
again
.Grind repeatedly with fine grinding powder.
.Clean totally
.Reassemble and check the leakage with solvent
.Repeat above procedures until getting ideal
seal
7.Distribution cam
1)Check
.Distribution cam
Replace if there is cave, scratch or discoloration
2)Measure
.Distribution cam(use micrometer)
Unqualified ¡úReplace
-166-
Limit value “A” of Limit value “B” of
distribution cam
distribution cam
Intake cam
Exhaust cam
36.437mm
(1.435 in)
30.031mm
(1.182 in)
36.482mm
(1.436in)
30.152mm
(1.187 in)
8.Valve rocker and rocker shaft
1)Check
.Rocker hole
.Contacting surface with distribution cam
If over worn, replace it
2)Check
.Rocker shaft surface
Replace or check lubrication if there is bent,
scratch or discoloration
3)Measure
.Measure inner diameter of valve rocker hole
Replace it if unqualified
Inner diameter of rocker hole:12.000~12.018mm
(0.4724~0.4731 in)
.Measure the outer diameter
of rocker shaft
Replace it if unqualified
Outer diameter of rocker
11.985~11.991mm(0.4718~0.4721 in)
-167-
.Substract the outer diameter of rocker shaft
from inner diameter of valve rocker hole to
calculate the clearance.
Clearance between rocker hole and shaft=@Inner diameter of valve rocker hole@
Outer diameter of rocker shaft
Replace a set if unqualified
Clearance between rocker shaft and hole:
0.009-0.037mm(0.0004-0.0031 in)
Limit:
0.037mm(0.0015 in)
9.Timing chain
Check
.Timing chain
Replace it if the chain is stretched, or not flexible or broken.
10.Timing sprocket and crankshaft sproket
Check
.Crankshaft sproket (on crankshaft)
If there is wear and damaged, replace the
sproket and chain totally
11.Guide plate
1)Check
.Lower guide plate ¢Ù(exhaust side)
.Upper guide plate ¢Ú (intake side)
Replace it if it is worn or damaged
12.Chain tensioner
1)Check
.Pushing rod of chain tensioner ¢Ù
.Washer ¢Ú
Replace it if it is worn or damaged
-168-
2)Check
Flexibility of chain tensioner
Checking procedure
.Press the tensioner pushing rod lightly with
finger, ad rotate it clockwise with thin screwdriver to screw it in.
.Press the pushing rod lightly with finger and
remove the screwdriver, then the pushing rod
screws out stably
.If the operation is unflexible, replace chain
tensioner.
13.Valve cover and sproket cabinet cover
1)Check
.Valve cover (upper valve cover ¢Ùand lower
valve cover ¢Ú )
.spocket cabinet cover ¢Û
.O-ring ¢Ü
Replace it if there is crack and damaged
14.Cylinder and piston
1)Check
.Carbon deposit (from piston top to ring slot)
2)Check
.Surface of cylinder and piston
Rebore cylinder or replace cylinder and piston
if there is vertical scratch.
3)Measure
.Clearance between cylinder and piston
Measuring method is as following
.Measuring the inner diameter “C”of cylinder
with inner diameter gauge@is the measuring
position @is 40mm(1.6 in)far away from cylinder top
Remark:
Measure twice the inner diameter “C”of cylinder from two directions vertical with each
other in the same face. Then find out average
value.
Inner diameter
“C”of cylinder
Standard value
Wear limit value
70.97-71.02mm
(2.794~2.796 in)
71.10mm
(2.799 in)
C=
X+r
2
-169-
If out of specification, rebore or replace the
cylinder and piston (Replace in a set)
.Measure the diameter “P”of piston lower part
with micrometer,
is the measuring position
is 4mm away from piston bottom(0.16 in)
Pistor lower part diameter “P”
Standard
70.92~70.97mm(2.792~2.794 in)
If out of specification. replace the piston and
piston ring as a set at the same time.
.Calculate the mating cylinder clearance with
the following formula
Mating cylinder clearance= “C”- “P”
Inner diameter of cylinder“C”
Pistion lower part diameter “P”
Mating cylinde clearance: 0.04~0.06mm
(0.0016~0.0024 in)
Limit:
0.15mm(0.0059 in)
.If out of specification, rebore or replace the
cylinder, and replace the piston and piston ring
as a set at the same time
15.Piston ring and piston pin
Piston ring
1)Measure
.Clearance between piston ring and ring groove
.Use feeler gauge ¢Ù
If out of specification, replace piston and a set
of ring
Caution
First clean the carbon deposits inside the pistion
ring and ring groove, followed by measuring
the clearance between piston ring and ring
groove.
-170-
Clearance between piston ring and ring groove
Standard
First ring
0.03-0.07mm
(0.001-0.003 in)
0.02-0.06mm
Second
ring (0.008-0.024 in)
ring
Limit
0.12mm
(0.005 in)
0.12mm
(0.005 in)
2)Measurement
¡ý
20mm(0.8 in)
¡ü
.Closed clearance of piston ring
.Install the piston ring to the cylinder,pull forward about 20mm(0.8 in),then pull the piston
ring with piston top to make it vertical with cylinder wall.
.Use feeler gauge ¢Ù
If out of specification replace a set of ring
close deamance
Piston
ring 1
Piston
ring 2
Limit
Standard
0.15-0.30mm
0.4mm
(0.006-0.012in)
0.15-0.30mm
(0.016in)
0.4mm
(0.006-0.012in)
0.2-0.7mm
(0.016in)
Oil ring (0.008-0.028 in)
Caution
You cannot measure the closed clearance of
scraping place of oil ring assy,if the clearance
of scraping plate is bigger,replace a set of oil
ring
-171-
Piston pin
1)Inspection
.If the color is changed, or indent is found,replace piston pin, then inspect the Lubrication
system.
2)Measurement:
.Outer diameter @ (Piston pin)
Out of specification,replace it
Outer diameter(piston pin):15.991-16.00mm
(0.6296-0.6299 in)
3)Measurement:
.Inner diameter
of piston pin
Out of specification,replace it
Inner diameter of piston pin hole
16.002-16.013mm (0.63-0.6304 in)
4)Measurement
.Clearance between piston pin and piston pin
hloe
Clearance between piston pin
and piston pin hloe= -@
Inner diameter of piston pin hole
Outer diameter of piston pin@
Clearance between piston pin and piston pin
hole
0.002-0.022mm (0.0001-0.0009 in)
Limit 0.07mm (0.003 in)
-172-
16.Crankshaft
1)Measurement
.Dimension A of crankshaft assy
If out of specification replace it or repair it
Dimension of crankshaft assy
55.95-56.00mm(2.203-2.205 in)
.Runout C
If out of specification replace it or repair it
Runout Limit
C1:0.03mm(0.0012 in)
C2:0.06mm(0.0024 in)
.Side clearance D of big head of connecting
rod
If out of specification, replace it or repair it
Max side clearance
0.35mm-0.65mm(0.014-0.026 in)
.Runout E of big head of connecting rod
If out of specificaition, replace it or repair it
Runout amount of big head of connecting rod
0.010-0.025mm(0.0004-0.0010 in)
.Clearance F of small end
If out of specification, replace it or repair it
Clearance of small end:
0.8mm-1.0mm(0.032-0.040 in)
Limit: 2.0mm(0.08 in)
2)Inspection:
.Crankshaft bearing
If there is some noise or not active in operation or overbig clearance, replace it.
-173-
Main points of reassembly of crankshaft:
The oil traces on crankshaft ¢Ùand crank pin
¢Ú should be connected correctly, the malposition of two oil traces should be with in 1mm
(0.04 in)
17.Driving gear of balance shaft and gear of
balance shaft
Inspection:
.Driving gear of balance shaft ¢Ù
.Gear of balance shaft ¢Ú
If worn or damaged, replace two gears at the
same time
18.Primary gear and electric starting gear
1)Inspection
.Main driving gear ¢Ù
.Clutch gear assy ¢Ú
If scraped worn or damaged, replace it
If the noise is ovehigh during operation, replace
two gears at the same time.
2)Inspection
.Duplex intermediate gear ¢Ù
Intermediate gear axle ¢Ú
If scraped, worn , or damaged, replace it
.Electric staring gear assy ¢Û
.Contact surface of overrunning clutch ¢Ü
.Bimetallic bushing¢Ý
If scraped, worn or damaged, replace duplex
intermidiate gear, intermidiate gear axle, electric staring gear assy as a set.
3)Inspection of overrunning:
.Install the electric starting big gear to the running clutch and fascten the running clutch
.Turn the starting big gear counterclockwise in
direction A as shown on the drawing, the starting big gear wil drive the overrunning clutch, if
not, it indicatas the running clutch is out of
operation, replace it.
.Turn the electric starting big gear clockwise
in direction B as shown or the drawing, the
starting big gear will run in idle speed if not, it
indicates that the overrunning clutch is out of
operation, replace it.
-174-
.Inspection
.Bolt¢Ù(overrunning clutch)
Loosen ¡úreplace with new one and apply
fastening agent
Caution:
Fastening torgue of bolt (overrunning clutch)
is 30Nm(3.0m.kg 22ya.pound).
Apply the fastening agent on the bolt
19.Main clutch
Clutch case
1)Inspection:
.Clutch case assy ¢Ù(inner surface)
Ablation,wear or darmage,replace it
.Single direction¢Ú(inside the clutch case assy)
If scraped,worn or damaged,replace it.
2)Inspection the operation of single direction
clutch
Make sure that the inner spline cover ¢Ùcan
only rotate clockwise in direction A,if the inner spline cover functions unsmoothly or
rotates.
Counterclockwise,replace the inner spline
cover
¢Ùand main clutch case assy ¢Úat the same
time
Main clutch shoe
1)Inspection
.Clutch shoe
If ablation is found,replace it.
Wear limit of main clutch shoe:@
1.5mm(0.06in)
2)Measurement
.Thickness of main clutch shoe
If out of specification,replace.
20.Vice clutch
Clutch case
Inspection
.Split groove of clutch case
If there is pressing mark,worn or damaged on
the groove face,remove the burr,or replace it.
-175-
Clutch hub assy and pressing plate
Inspection
.Tooth groove on the clutch hub¢Ù
.Tooth groove on the pressing plate¢Ú
If there is scraped,worn or damaged,replace
the clutch hub or pressing plate.
Friction plate
1)Inspection
.Friction plate¢Ù
If damaged ,worn replace a set of friction plate
2)Measurement:
.Friction plate thickness
.Measure four positions
If out of specification,replace a set of friction
plate
Wear Limit:
2.8mm(0.110 in)
Clutch plate
Measurement:
.Planeness of clutch plate
Use flat plate and feeler gauge ¢Ù
If out of specification,replace it.
Planeness Limit:
0.2mm(0.008 in)
Clutch post rod and earing
Inspection:
.Bearing ¢Ù(Post rod)
If rough in surface or jammed in rotation,replace it
.Clutch post rod ¢Ú
.Pressing cover ¢Û
If worn,damaged,replace it.
-176-
Clutch spring
1)Inspection
.Clutch spling
If worn damaged,replace it
2)Measurement
.Free length of clutch spring@
If not of specification replace a set of spring
Min Limit of clutch spring length
32.9mm(1.30 in)
Clutch operartion rocker assy
Inspection
.Operation rocker assy ¢Ù
.Adjusting screw ¢Ú
.O-ring ¢Û
If cracks,wear or damage replace it
21.Oil pump
1)Measurement
.Clearance @ between oil pump and out rotor
¢Úwith feeler gauge
If out of specification,replace oil pump
Clearance Limit
0.09mm(0.004 in)
2)Measurement
.Side clearance between outer rotor¢Ù and inner rotor ¢Ú
If out of specification,replace oil pump
Side clearance limit
0.2mm(0.008 in)
3)Inspection
.Gear of driving oil pump on driving gear of
balance shaft
.Oil pump gear assy ¢Ú
If worn scraped damaged,replace it
-177-
22.Shift fork and fork shaft
1)Inspection
.Fork
Connection surface to gear and shift cam
If worn,scraped,bent or damaged,replace it.
2)Inspection
.Fork shaft
(Roll the fork shaft on a plane)
If bent replace it.
Warning
Never attempt to straight a bent fork shaft
3)Inspection .Movement of fork on the fork
shaft ¢Ù
If not smooth in operation,replace fork or fork
shaft
23.Shift cam
Inspection
.Groove of shift cam ¢Ù
If worn,damaged,scraped,replace it.
.Start wheel ¢Ú
If damaged or worn,replace it
.Needle bearing ¢Û
If rough in surface or not active in operation,
replace it.
24.Main/vice shaft and gtar
1)Measurement
.Runout of shaft ¢Ù (Main/vice shaft)
Measure with bracket and runout meter
If out of specification,replace it.
Runout Limit
0.08mm(0.0031 in)
-178-
2)Inspection
.Gear (refer to shift mechanism and output
gear ¢Ú)
.Engaging jaw position
If cracks ,damage,wear,replace it.
Caution
When replacing the output gear,be sure to adjust the adjusting washer of output gear
3)Inspection
.Movement of gear(shift mechanism)
If not smooth in operation,replace it.
25.Shift shaft and limit lever
1)Inspection
.Shift shaft ¢Ù
.Hook plate ¢Ú
If bent,worn,damaged,replace it.
2)Inspection:
.Limit lever¢Û
If not smooth in operation,replace it
.If bent or damaged,replace it.
3)Inspection
.Shift torsion spring¢Ü(on the shift shaft)
.Tension spring¢Ý(Hook plate)
.Limit torsion spring¢Þ(On Limit lever)
If worn,damaged,replace it.
26.Disengaging mechanism of clutch Inspection
.Upper and lower camplates ¢Ù
.Steel ball stand/steel ball¢Ú
.Compressing spring¢Û
If worn,scraped,damaged,replace it
-179-
2.Bearing and oil seal
1)Inspection
.Bearing
If jammed in operation or there are pits and
dammagd,replace it.
2)Inspection
.Oil seal
If damaged or worn replace it.
28.Circlip and washer
Inspection:
.Circlip
.Washer
If damaged loose,bent replace it.
29.Crankcase
1)Clean crankcase with soft agent completely
2)Clean all sealing surfaces and closing surfaces completely
3)Inspection:
.Crankcase
Cracks/damage,replace it.
.Oil trace
If jamed,blow with compressed air.
Caution
When replacing the crankcase be sure to readjust the output gear washer.
-180-
30.Hand operated mechanism
1)Inspection
.Inspection ¢Ù
If cracks beat,damaged,replace it.
.Driving jaw¢Ú
.Compressing spring¢Û
.Torsion spring¢Ü(Driving jaw position)
Wear/cracks/damage,replace it.
2)Inspection:
.Rolling spring¢Ù(Starting)
Wear/cracks/damage,replace it.
.Tension wire ¢Ú
Wear/cracks/damage,replace it.
.Driving plate assy ¢Û
Cracks/damage,replace it.
31.Output mechanism
1)Inspection
.All gears ¢Ù
If pressing mark/abrasion/wear is foud,replace
it
.Connecting jaw ¢Ú
If pressing mark/abrasion/wear is foud,replace
it
.Driving shaft ¢Û
.Output shaft ¢Ü
If damaged or bent,replace it.
Caution
When replace arry gear or output shaft,be sure
to readjust core gear washer,refer to¡±Selection of adjusting washer¡±section.
2)Inspection
.Bearing ¢Ý
If pressing mark or abrasion is found,replace
it.
3)Inspection
.Front joint and rear join¢Ù
.Driving fork¢Ú
.Needle bearing ¢Û
-181-
4)Inspection
.Reverse fork ¢Ù
If wear/abrasion/bend/damage is found on the
surface connecting with connecting jaw and reverse operating shaft,replace it.
.Compressing spring¢Ú
If the elasticity is lost,or worn replace it
.Steel ball ¢Û
If wear,damage,or scratch marks is found,replace it
5)Inspection:
Reverse fork shaft
Roll the reverse fork shaft on the flat surface,
if bent,replace it.
Caution
Never straighten a bent shaft and reuse it
6)Inspection
.Flexibility of fork movement
Install the reverse fork ¢Ù to forkshaft,if not
active or smooth in operation,replace fork and
fork shaft.
7)Inspection
.Reverse control lever ¢Ù
.Operating plate ¢Ú
.Reverse operating shaft ¢Û
If bend,cracks or damage is found, replace it.
8)Inspection
.Rear cover ¢Ù
If cracks or damage on the position connecting
with left crankcase,rear driving cover is found,
replace the rear cover.
.O-ring ¢Ú
If damaged or deformed,replace it
Caution
When replacing the rear cover,be sure to readjust the gear core washer,refer to“Selection
of Adjusting washer”sectsion.
-182-
Section 3 Assembly and adjustment of Engine
(I) Closing assembly of left & right crankcase
1.Installment
.Crankshaft ¢Ù
(Install to right crankscae)
Caution:
When instlling the crankshaft, fasten the connecting rod to the installing hole of cyclinder
with hand.
¢Ù
¢Ù
2.Installment
Spindle assy and driving shaft assy¢Ù
¢Ù
¢ß
¢Ü
¢Ú
¢Þ
¢Ý
¢Û
3.Installment
.Balance shaft ¢Ù
.Fork 1 ¢Ú
.Fork 2 ¢Û
.Fork 3 ¢Ü
.Shift cam ¢Ý
.Short fork shaft ¢Þ
.Long fork shaft ¢ß
Caution
.Lubricate each gear and bearing.
.Before closing, be sure to set the shift mechanism at neutral and active in operation.
-183-
(II) Assembly of right crankcase
4. Applying
¡¤Seal agent ¢Ù
Apply the seal agent on the closing surface of
left crankcase.
Seal agent: Letai 518 anaerobic plane seal glue.
5. Installment:
¡¤Location pin ¢Ù
6. Install the left crankcase to the right cankcase.
Beat with soft hammer slightly.
Applying seal agent
Caution
6
2
Before installing the clossing screw, be sure to
rotate shaft at random direction so as to check
if the function of shifting mechanism is normal.
7
1
5
8
9
3
7. Tighten up
Screw (crankcase)
Caution
Tighten up the screw as the order shown on the
drawing.
8. Appling oil
¡¤4-stroke engine oil
Applying to the bearing and oil hole
9. Inspection:
¡¤Operation of crankshaft and shift mechanism
Not active replace
11
10
-184-
1. Balance shaft gear and driving gear
1) Installment
¡¤Woodruff key ¢Ù
¡¤Driving gear of balance shaft ¢Ú
¡¤Circlip ¢Û
Caution
Use the gear puller.
2) Installment:
¡¤Balance shaft gear ¢Ù (be driven)
¡¤Flat key ¢Ú
Caution
The mark ¢Ûof driving gear should align with
the mark of ¢Üdriven gear.
¢Ü
¢Ù
¢Û ¢Ú
¢Ü
¢Û
3) Installment:
¡¤Locking washer ¢Ù
¡¤Nut ¢Ú(Dirven gear)
Caution
¡¤Be sure to use new locking washer.
¡¤Install the locking washer locating plate ¢Û
inside the key groove of balance shaft ¢Ü.
¢Ú
¢Ù
4) Tighten up:
¡¤Nut ¢Ù (Driven gear)
Caution
Place a fold cloth ¢Úbetween the balance shaft
gear ¢Û and the gear of driving gear ¢Üso as to
avoid turning of shaft, then tighten up the nut.
¢Ü
¢Û ¢Ù50N.m
¢Ú
5) Bend the locking plate of locking washer.
-185-
2. Shift shaft and oil pump
1)Installment:
¡¤Star gear ¢Ù
¡¤Locating pin ¢Ú(long)
¡¤Shift pin ¢Û(short)
Caution
Install the location pin ¢Ú(long) to the filting mark
¢Ü position.
¢Ú
¢Ù
¢Ù
12Nm
2) Installment:
¡¤Star gear (install to shift cam)
Caution
The hole of shift cam should be align with the
location pin ¢Ú (long) of star gear.
3) Tighten up :
¡¤Screw ¢Ù (Star gear)
¡¤Apply the thread fastening agent on the screw
¢Ù.
4) Installment
¡¤Shift torsion spring ¢Ù(install to shift shaft)
¡¤washer ¢Ú
¡¤Limit lever ¢Ûand limit torsion spring assy
¢Ü
¡¤washer ¢Ý
5) Installment
¡¤Shift shaft ¢Ù
Caution
¡¤Before installing the shift shaft, apply the
grease to the oil seal lip (left crankcase).
¡¤Pull the hook plate ¢Ú in arrow direction and
limit lever ¢Ûand press and install them to the
star gear
¡¤Make sure that the torsion spring pin ¢Üin
whithin spring hook ¢Ü
-186-
6) Applying engine oil
¡¤4-stroke engine oil
(Apply the parts inside the oil pump)
7)Installment:
¡¤Oil pump seat ¢Ù
¡¤Outer rotor ¢Ú
¡¤Inner rotor ¢Û
¡¤Locating pin ¢Ü
¡¤Oil pump gear assy ¢Ý
¡¤Driving pin ¢Þ
¡¤Oil pump cover ¢ß
¡¤Screw ¢à
Applying engine oil
¡¤4-stroke engine oil
(Apply to the lubrication oil trace of crankcase)
Apply lubrication oil Apply lubrication oil
Caution
¢Ù
7Nm
The enough 4-stroke engine oil should be applied to lubrication oil trace of crankcase, otherwise the engine would be damaged.
9)Applying engine oil
¡¤4-stroke engine oil
(Applying on the lubrication oil trace of oil pump)
10)Installment
¡¤Oil pump pad
¡¤Oil pump (to crankcase)
¡¤Tighten up screw
Caution
¢Ú
¢Ù
¡¤Be sure to use new pad
3. Right connecting case
1)Installment
¡¤Right connecting case gasket ¢Ù(new)
¡¤Locating pin ¢Ú
¡¤Right connecting case ¢Û
Caution
¡¤Be sure to use new gasket.
2) Tighten up
Screw (right connecting case).
-187-
4. Main, vice clutch
1) Installment:
¡¤Clutch gear assy(secondary)
¡¤Spline washer ¢Ú
2) Installment:
¡¤Friction plate ¢Ù
¡¤Clutch plate ¢Ú(Install to clutch hub ¢Û)
Caution
¢Û
Install the clutch plate and friction plate to the
clutch hub alternately, from friction plate to friction plate.
¢Ú
¢Ù
¢Û
¢Ü
3) Installment:
¡¤Clutch hub ¢Ù
(Install to pressure plate ¢Ú)
Caution
The arrow mark ¢Ûof clutch hub should align
with the arrow mark ¢Üon the pressure plate.
¢Ú
¢Ù
¢Û
¢Ú
¢Ù
¢Ü
4) Installment:
¡¤Clutch hub, pressure plate, clutch plate and
friction plate assy ¢Ù (to main shaft ¢Ú)
¡¤Locking washer ¢Û
¡¤Nut ¢Ü (clutch hub)
Caution
Be sure to use new locking
¡¤Be sure to install the locking washer inside
the indent of clutch hub.
5) Tighten up:
¡¤Nut ¢Ü(Clutch hub)
Caution
Fasten the clutch hub, then tighten up the
-188-
6Nm
¢Ü ¢Û
¢Ú
¢Ù
¢Ù
¢Ú
6) Bend the locking plate ¢Ýof locking washer.
7) Installment:
¡¤Clutch spring ¢Ù
¡¤Pressure cover ¢Ú
¡¤Bearing ¢Û
¡¤Clutch post rod ¢Ü
8) Installment:
¡¤Output gear ¢Ù
¡¤N u t ¢Ú
Caution
Be sure to use new nut.
60Nm
9) Tighten up
¡¤N u t ¢Ú
Caution
Fasten the clutch hub of vice clutch, and tighten
up the nut.
10) Lock the nut ¢Úwith screwdriver.
-189-
11) Installment
¡¤Washer ¢Ù
¡¤Main clutch case assy ¢Ú
¡¤Washer ¢Û
¡¤Clutch shoe assy ¢Ü
Caution
¢Ù
¢Ú
¢Û
¡¤There are two indents ¢Ùon the vice clutch
case.
When installing the main clutch case, one of the
indents should align with the main clutch gear
¢Ú.
¢Ü
¢Ù
¢Ú
12) Installment:
¡¤Locking washer ¢Ù
¡¤Nut ¢Ú(Main clutch)
¢Ú
Caution
¢Ù
¡¤Be sure to use new locking washer
¡¤The locating plate of locking washer should
be installed in the indent of clutch shoe assy.
¢Ú
13)Tight up:
¡¤Nut ¢Ú(Main clutch)
¢Ù
Caution
Fasten the clutch shoe assy, then tighten up nut.
14)Bend the locking plate ¢Ûof locking washer.
-190-
¢Ù ¢Ú
¢Û ¢Ü
5. Clutch disenagaing mechanism and right case
cover
1)Installment:
¡¤Lower cam plate ¢Ù
¡¤Steel ball stand assy ¢Ú
¡¤Upper cam plate assy ¢Û
¡¤Compressing spring ¢Ü
Caution
¡¤The locating notch ¢Ýof lower cam plate
should aling with convex block ¢Þof shift shaft.
¡¤The locating notch ¢ß of upper cam plate
should align with guide rod ¢à.
¢Þ
¢Ý
¢ß
¢à
¢Û
2) Installment:
¡¤Locating pin ¢Ù
¡¤Right crankcase gasket ¢Ú
¡¤Right crankcase gasket ¢Û
¢Ú
¢ß
¢Ù
¢Þ
¢Ý
¡¤Oil fine filter ¢Ý
¡¤O-ring ¢Þ
¡¤Oil fine filter cover ¢ß
¡¤Clutch operating rocker assy ¢à
Caution
¢à
¢á
¡¤Be sure to use new gasket.
¡¤The hole of clutch operating rocker assy ¢à
should align with shift shaft.
3) Tighten up
¡¤Screw(right crankshaft cover)
-191-
(III) Assembly of left crankcase
1. Reverse operation system
1) Mount:
¡¤Reverse operation shaft ¢Ù
¡¤Operation plate ¢Ú
¡¤Reverse control lever ¢Û
¡¤Circlip ¢Ü
Mount the above on the rear driving cover.
2) Mount:
¡¤Compressing spring ¢Ù(on reverse gear fork
¢Ü)
¡¤Steel ball ¢Ú
Caution
Mount a positioning set pin ¢Û into the fork
first for fixing the steel ball and spring, that is
easy to mount the fork pin into fork.
¢Ü
¢Ù
¢Û
¢Ú
3) Lubrication
Apply lubrication oil(SAE20W/40) in the inner
diameter of fork and pin.
4) Mount
¡¤Reverse gear fork shaft (With O-ring)
¡¤Mount the reverse gear fork pin ¢Ù into the
hole of rear driving cover ¢Û
¡¤Reverse gear fork ¢Ú
¢Ù
¢Ú
¢Û
Caution
Mount the reverse fork shaft into the hole of the
reverse fork and then pull out the locating pin
and take it out.
¡¤Check if the fork is working.
-192-
¢Ù
2. Output shaft assy
1) Mount
¡¤Bearing ¢Ù(to rear cover)
¡¤Nut collar ¢Ú
Caution
¢Û
¢Ü
¢Û
¢Ú
¢Ù
Use the nut collar spanner ¢Ûto tighten the collar.
¢Ú
3) Mount
Washer ¢Ù
¡¤Reverse gear ¢Ú
¡¤Compromise left-turning nut ¢Û
Caution
¡¤Fasten the compromise left-turning nut by
counter clockwise direction, because it is leftturning thread.
¡¤Use special-shaped nut spanner ¢Ü
50Nm
4) Fasten
¡¤Special-shaped left-handed nut
5) Mount:
¡¤Washer ¢Ù
¡¤Bearing ¢Ú
¡¤Nut collar ¢Û
¢Ù
¢Ú
¢Û
¢Ü
Caution
¡¤Use allen wrench ¢Ü
¡¤Coat¡°518 anaerobic sealing gum¡± or equal
substitute on outer end surface of bearing ¢Ú
which side is near to washer.
¡¤Coat thread fastening agent on allen nut collar
¢Û
6) Fasten
¡¤Allen nut colar
-193-
¢Ú
¢Ý
¢Ù
¢Ü
¢Û
7) Mount:
¡¤Output shaft ¢Ù
¡¤Connecting claw ¢Ú
¡¤Front splice ¢Û
¡¤Washer ¢Ü
¡¤N u t ¢Ý
8)Fasten
¡¤N u t ¢Ý
¢Ù
Caution
¡¤Fix the front splice ¢Ûwith universal joint
holder and conncet the locking nut ¢Ý.
¡¤Apply the thread fastening agent on the nut
¢ÝWhen mounting it.
9)Mount
¡¤Rear joint and driving fork.
Mounting steps:
¡¤Mount the relative driving fork into the splice
¡¤Coat grease on the needle bearing
¡¤Press every needle bearing ¢Ùinto the front
splice with proper tube to ensure that the driving fork is inserted into the needle bearing hole.
¡¤Fix the hog ring ¢Úinto every bearing groove.
Caution
¡¤Check every needle bearing because the
needle maybe drop out from bearing cone to
lose. If it is like this the universal joint. Can’ t be
turned flexibly.
¡¤Insert the needle bearing into universal joint
entirely to ensure the hog ring ¢Úcan be
mounted.
-194-
3. Mount:
¡¤Locating pin ¢Ù
¡¤Washer ¢Ú
¡¤Bearing ¢Û
¡¤Forward shift gear assy ¢Ü
¡¤Output shaft assy ¢Ý
¢Þ
¢Û
¢Ú¢Ü ¢Ý
¢Ù
Caution
Apply grease on O-ring ¢Þ
Apply sealing gum
4. Coat
¡¤Sealing agent
(Coat on the matching surface of rear driving
cover.)
¡¤Brand of sealing agent is 518 anaevobic sealing gum or equal substitute.
5. Mount:
¡¤Rear driving cover ¢Ù
¡¤Tighten bolt ¢Ú
Caution
Before mounting the rear driving cover on the
crank, make the gear on the forward shift
position.
¢Ù
6. Tighten:
¡¤Bolt ¢Ù (rear cover)
4plces
Caution
When mounting rear cover to the crankcase,
the arrow must be upward.
7. Electric starting system.
-195-
¢Ú
8Nm
¢Ù
¢Û
7. Electric starting system
1)Mount
¡¤Timing chain ¢Ù
¡¤Up guide plate ¢Ú
Caution
Tight the shaft wire ¢Û of timing chain for
avoiding it is dropped into the crankcase.
2) Mount
¡¤Washer ¢Ù
¡¤Electric starting gear assy ¢Ú
¡¤Woodruff key ¢Û
¡¤Magneto rotor ¢Ü
¢Ù
¢Û
¢Ú
Caution
¢Ú
¢Ü
¡¤Clean the conical part of crank and magneto
¡¤When installing the magneto the key must be
in to key groove of crank for avoiding it.
¡¤Mount the magneto ¢Üdrops out on the
crank, and then fix the electric starting gear assy
¢Úturn the magneto by counterclockwise to
make it into the electric starting big gear.
3) Mount:
¡¤Double wheel ¢Ù
¡¤Washer ¢Ú
¡¤Wheel axle ¢Û
¡¤Locating pin ¢Ü
¡¤Sealing washer ¢Ý of left crankcase cover ¢Ý
¢Ü
¢Ú
¢Ý
¢Û ¢Ú
¢Ü
¢Ù
-196-
Caution
Must use new washer
4) Mount:
¡¤Left crankcase cover ¢Ù
¡¤Fasten screw (8 pieces)
7Nm
5) Mount:
¡¤Starting click pulley assy ¢Ù
¢Ù
Caution
¡¤Fix the click pulley with rotor seat and tighten
the bolt.
¡¤Before mounting the starting click pulley,
apply grease on oil sealing ¢Ú and O-ring ¢Û.
¢Ú
¢Ù
¢Û
50N.m
(¢ô)Selection and installation of adjusting
washer when mounting the crankcase.
When mounting the crankcase, output gear and
output shaft, the applied washer thickness is
determined by the actual machining dimention
of the following parts. Adjust the correct breaking of the bevel gear and the clearance of every
moving parts by washer thickness.
¡¤Crankcase
¡¤Output gear
¡¤Reverse gear
¡¤Rear cover
¡¤Forward gear
¡¤Output shaft
When replacing above parts, must select the
adjusting washer again.
1. Mounting position of washer
A =Washer of output gear
B =Washer of forward gear
C =Washer of reverse gear
D =Washer of output shaft
-197-
A =a-b
B =d-c-e-f
C =d-g-h-i
D =j+c-e-B-k-1-0.25
¢ÙLeft crankcase
¢ÚOutput gear
¢ÛForward shift gear
¢ÜOutput shaft
¢ÝReverse gear
¢ÞRear cover
Changed parts Washer needed to be adjusted
C D
A B
Crankcase
Output gear
A
Forward gear
D
B
Reverse gear
C D
Rear cover
C D
Output shaft
D
2. Choose washer A
¡¤When changing the crankcase or output gear,
adjust output gear washer A
1) Calculate the washer thickness of output gear
hy following formula¡°A¡±
:
Washer thickness of output gear:
A= a - b
a =Theory installing distance 42 of output gear
adds the value engraved on the output gear.
b is the value engraved on crankcase.
Caution
All the unit about the value is mm.
2) For example:
If¡°+0.02¡±is engraved on the output gear.
that is : a =42+0.02=42.02
If¡°41.45¡±is engraved on the left crankcase
So the washer thickness is :
A=42.02-41.45=0.57mm
3) The following is prepared thickness of washer
(mm):
0.2
0.3
-198-
0.4
0.5
Washer selection table
range of A
0.5 ¡ÜA ¡Ü0.32
0.35 £¼A ¡Ü0.42
0.42 £¼A ¡Ü0.52
0.52 £¼A ¡Ü0.62
0.62 £¼A ¡Ü0.72
0.72 £¼A ¡Ü0.75
Selected washer
0.3
0.4
0.5
0.6
0.7
0.8
The washer thickness is 0.57mm, by calculation,
the washer thickness should select 0.60mm according to above table.
3. Select washer B
When replacing left crankcase or forward gear,
the forward gear washer B need to be adjusted.
1) Calculate the washer thickness of forward
gear by following formula.
Washer thickness of forward gear:
B = d - c- e- f
d ¡¢
c is the value engraved on the left crankcase
e =(at the forward gear) bearing thickness
(no change)
¡°1 3 . 0 0 m m ¡±
f = Theory installing distance¡°37.5¡± of
forward gear adds value engraved on forward gear.
For example:
If¡°d=110.08¡±is engraved on left
crankcase,¡°c=59.02¡±
If¡°+0.02¡±is engraved on the forward gear,
f =37.5+0.02=37.52
So the washer thickness is :
B =110.08-59.02-13.00-37.52=0.54mm
3)The following is the prepared washer
thickness (mm)
0.2
0.3
0.4
0.5
-199-
Washer selection table
range of B
0.25 ¡ÜA ¡Ü0.28
0.28 £¼A ¡Ü0.38
0.38 £¼A ¡Ü0.48
0.48 £¼A ¡Ü0.58
0.58 £¼A ¡Ü0.68
0.68 £¼A ¡Ü0.75
Selected washer
0.2
0.3
0.4
0.5
0.6
0.7
The washer thickness is 0.54mm, by calculation,
the washer thickness should select 0.50mm according to above table.
3. Select washer C
When replacing left crankcase reverse gear,and
rear cover,reverse, gear washer
C need to be adjusted.
1) Calculate the washer thickness of forward
gear by following formula.
Washer thickness of reverse gear:
C = c- g- h- i
c is the value engraved on left crankcase
g is the value engraved on rear cover
(at the
h is the bearing thickness¡°12.00¡±
reverse gear)
i means that the theory installing distance
¡®39¡¯of reverse gear adds value engraved on reverse gear.
2)For example
¡°c =58.98 ¡±is engroved on left crankcase
¡°g =7.49 ¡±is engraved on rear cover
If¡°-0.02¡±is engraved on reverse
gear, i =39+(-0.02)=38.98
So washer C thickness is:
C=58.98-7.49-12.00-39.98=0.51mm
3) The following is the prepared thickness of washer(mm):
0.2
0.4
0.3
0.5
The way selected washer C is same with the way
of washer B. The washer thickness is 0.51mm
by calculation. So the washer thickness should
select 0.50mm according to washer C selection
way.
-200-
5. Select Washer D
When replacing left crankcase forward gear,
reverse gear, rear cover and output shaft, washer
D of output shaft needed to be adjusled.
1) Calculate the washer thickness of output shaft
by following formula
Washer thickness of output gear:
D = d + j - e - B-k-1-0.25
d is the value engraved on left crandcase
j is the value engraved on rear cover
e is the bearing (at output gear) thickness
¡°1 3 . 0 0 ¡±
¡°k¡±is the value engraved on forward gear
¡°l¡±is the value engraved on output shaft
2) For example:
¡¤If¡°0.97¡±is engraved on rear cover
¡¤
¡°110.05¡±is engraved on left crankcase
¡¤
¡°14.4¡±is engraved on forward gear
¡¤
¡°80.45¡±is engraved on output shaft
¡¤So the washer thickness is:
D =110.05-0.97-13.00-0.50-14.4-80.450.25=2.42mm
3) The following is the prepared washer
thickness(mm)
1.0
1.3
1.7
1.1
1.5
Washer selection table
selected washer
1.8 ¡ÜD ¡Ü1.9
1.7
1.9 £¼D ¡Ü2.0
2.0
2.0 £¼D ¡Ü2.1
2.1
2.1 £¼D ¡Ü2.2
2.2
2.2 £¼D ¡Ü2.3
2.3
2.3 £¼D ¡Ü2.4
2.4
2.4 £¼D ¡Ü2.5
2.5
2.5 £¼D ¡Ü2.6
2.6
2.6 £¼D ¡Ü2.7
2.7
2.7 £¼D ¡Ü2.8
2.8
2.8 £¼D ¡Ü2.9
2.9
2.9 £¼D ¡Ü3.0
3.0
The washer thickness is 2.42mm by calculation.
So the washer thickness should select 2.5mm
according to above table.
range of washer thickness
-201-
6. Installtion of adjusting washer
1) Washer A
Mount
¡¤Washer A ¢Ù
¡¤Bearing ¢Ú
Caution
This step is carried out before assembly with
closing case.
Mount:
¡¤Clamp plate ¢Ù
Caution
This step is carried out before assembly with
case.
¢Û ¢Ù
¢Ú
-202-
2) Washer B
Mount:
¡¤Forward gear ¢Ù
¡¤Washer B ¢Ú
¡¤Bearing ¢Û
¢Ü
¢Û
¢Ù
3) Washer C
Mount:
¡¤Washer ¢Ù
¡¤Reverse gear ¢Ú
¡¤Special-shaped left-handed nut ¢Û
Caution
¢Ú
¡¤The special-shaped left-handed nut left-handed
thread, so tighten it in counterclock wise
direction.
¡¤Use special-shaped nut wrench ¢Ü.
¢Ù
¢Ú
¢Û
¢Ü
4) Washer D
Mount:
¡¤Washer ¢Ù
¡¤Bearing ¢Ú
¡¤Bushing ¢Û
Caution
¡¤Use inner allen bushing wrench ¢Ü
¡¤Coat 518 anaerobic sealing gum or equal substitute on outer end surface of bearing ¢Úwhich
side is near to washer.
-203-
(V) Assembly of cylinder head
1. Mount:
¡¤Double end bolt ¢Ù
¡¤Mount:
¡¤Piston ¢Ù
¡¤Piston pin ¢Ú
¡¤Circlip ¢Û
¢Ú
Caution
¢Û
¢Ù
¢Ú
¢Û
¡¤Arrow ¢Üon the piston must point to the forward of engine
¡¤Before mounting the piston pin, cover
Crankcase hole with cleaning towel or clothes
for avoiding circlip and other small parts dropping into crankcase.
¡¤Be sure to use new circlip.
3. Apply oil:
¡¤Apply4-stroke machine oil on the piston pin,
piston ring groove and piston edge.
4. Installation of piston ring
Assembly the piston ring split clearance staggeringly according to showing figure.
¢ÙTop ring
¢ÚOil ring(lower ring
¢ÛThe second ring
¢ÜOil ring(up ring)
5. Install:
¡¤Cylinder body washer ¢Ù
¡¤Locating pin ¢Ú
¡¤O-ring ¢Û
Caution
Be sure to use new sealing washer and o-ring
¢Ú
¢Ú
¢Û
Caution
¢Ù
-204-
¡¤Be sure to check the standard of manufacture and engraved figure on the ring. The marking surface is toward to piston top.
¡¤Before mounting cylinder, apply a layer of 4stroke engine oil on piston ring.
6. Mount:
¡¤Cylinder ¢Ù
¡¤Tighten bolt (cylinder) temporally
Caution
¡¤When pressing the piston ring with one hand,
assembly the cylinder with another one.
¡¤The timing chain should through the bending locking end ¢Úof chain chamber.
¢Ù
¢Û
¢Ù
7. Lubricate:
¡¤Valve rocker ¢Ù
¡¤Rocker shaft ¢Ú
¡¤Lubrication oil: SAE 10W30 machine oil
¢Ú
8. Install
¡¤Valve rocker
¡¤Rocker shaft
Warning
¡¤Thread hole on the rocke shaft is toward out.
¢Ù
¢Ú
¢Ý
¢Û
¢Ü
¡¤Mount short rocker shaft ¢Ù(With O-ring¢Ú),
at the side of outlet and the long rocker shaft
¢Û (with slot ¢Ü at the side of inlet.)
¡¤The solt ¢Üdirection, need to be adjusted
when mounting inlet rocker shaft, to make the
slot align with hole of cylinder cover bolt¢Ý
-205-
10. Mount:
¡¤Valve cam ¢Ù
Caution
¢Ù
¢Û
The driving pin ¢Ú on the end of valve cam
must align to the timing mark ¢Ûon the cylinder cover.
¢Ú
¢Û
¢Ú
¢Ù
9. Mount:
¡¤Bearing ¢Ù(to valve cam)
¡¤Bearing ¢Ú(to valve cam)
Caution
The bearing ¢Ùwith oil sealing is toward out
when assembling it, and the bearing ¢Úwith
dust cap is toward inside when assembling it.
¢Ù
11. Mount:
¡¤Clamp plate ¢Ù(Bearing)
¡¤Locking plate ¢Ú(new)
¢Û
¢Ú
¢Ù
12. Fasten
¡¤Bolt ¢Ù
13. Bend locking plate end¢Ú
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14. Mount:
¡¤Lower guide plate ¢Ù
¡¤Oil sealing ¢Ú
¡¤Locating pin ¢Û
¡¤Cylinder cover washer assy ¢Ü
¡¤Cylinder head ¢Ý
¡¤Washer ¢Þ
¡¤Cylinder head nut ¢ß
¡¤Washer ¢à
¡¤Screw ¢á
Caution
¡¤Apply 4-stroke engine oil on the washer ¢ß
15. Fasten the bolt and nut according to the
order in the figure.
¢Ú
¢Û
¢Ü
¢Ù
¢Þ
¢Ý
¢Ú
16. Mount:
¡¤Timing spocket pulley
¡¤Mounting step of timing spocket pulley:
¡¤Turn the cam shaft to make the cam pin ¢Ù
is ¡¤correspondance with the matching mark
¢Úof ¡¤cylinder head.
¢Ù
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¡¤Turn the crank until the mark TDC ¢Û is
¢Ú
¢Ý
60Nm
¢Þ
correspondance with the mark on the crankcase cover ¢Ü.
¡¤Mount the timing chain to the timing spocket
pulley.
¡¤Mount the timing spocket pulley to the cam
shaft for ensuring the mark of timing spocket
pulley ¢Ý is correspondance with the mark ¢Ú
on the cylinder head, then fasten the spocket
pulley bolt with hand.
(Be ensure the tension of the timing chain at
the outlet when mounting the timing spocket
pulley)
¡¤Insert the special tooling into the tension hole
of timing chain and pull the tensioner timing
chain toward inside.
¡¤The matching mark ¢Ýof timing spocket is
sure to correspond to the matching mark¢Ú of
cylinder head when pulling the timing chain
tensioner.
¡¤Change the matching position between
spocket pulley and chain if the marks is not
aligned.
¡¤After the marks is aligned, fasten the bolt
of timing sprocket.
Caution
Fix the starting ratchet ¢Þand tighten the bolt
of timing spocket.
17. Mount:
Tensioner of timing chain
Mounting steps:
¡¤Take off bolt ¢Ùfrom the tensioner of timing chain.
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¡¤Insert the small screwdriver ¢Ûinto the
groove of tension rod, and turn the screwdriver
by clockwise, at same time to press tension
rod until the screwdriver can’t be turned.
¢Ü
¢Û
¢Ú
¢Ü
¡¤Hold the screwdriver at this position, and
mount the tensioner assy ¢Ú (with washer) on
the cylinder, then turn the locking bolt ¢Üof
tensioner sub-assembly.
¡¤Take off the screw drive from the tensioner,
and then tighten the locking bolt of tensioner
assy.
¡¤Mount tension bolt ¢Ùwith washer.
Caution
Always use new washer.
¢Ù
10Nm
18. Adjust:
¡¤The valve clearance
There is a valve clearance between two rocker
when the mark ¢Ûof timing spocket is align
with the mark ¢Üof cylinder cover.
¡¤Inlet valve clearance(cool):
0.05-0.09mm
¡¤Outlet clearance(cool):
0.11-0.15mm
19. Apply 4-stroke engine oil
(On the up side of cam shaft)
¡¤Oil quantity is 0.05L
-209-
20. Mount:
¡¤Valve cover ¢Ù(mount o-ring in the sealing
groove of throttle cover first)
¡¤Valve cover ¢Ú(mount o-ring in the sealing
groove of throttle cover first)
¡¤Spark plug ¢Û
Caution
Check the o-ring, if it is deformed or damaged,
replace it.
21. Mount:
¡¤Spocket chamber cover ¢Ù(mount o-ring in
the sealing groove of spocket chamber cover
first).
Caution
Check the o-ring, if it is deformed or damaged,
replace it.
22. Mount:
¡¤O-ring ¢Ù
¡¤Carburetor seat ¢Ú
¡¤Washer ¢Û
¡¤Carburetor ¢Ü (mount o-ring in sealing
groove first)
¢Ú
¢Ù ¢Û
¢Ü
Caution
Check all o-ring . If it is damaged, replace it.
¢Ù
23. Mount:
¡¤Carburetor seat and carburetor (on cylinder cover)
¡¤Wire clamp ¢Ù
Caution
The carburetor seat and the o-ring in the sealing groove of cylinder cover connecting surface can’ t be forgotten to mount.
-210-
(VI) Manual starting mechanism and others
1. Mount:
¡¤Coil spring backboard assy
¢Ù
Caution
Hang the coil spring hook hanger ¢Úinto the split
of spring backboard, and wind the coil spring
in counterclockwise.
¢Ú
2. Install:
¡¤Washer ¢Ù
¡¤Coil spring backboard assy ¢Ú
Caution
End of the coil spring is hung the inner race of
left side-cover coil spring
¢Ú
1
3. Wind the rope in the drive disc groove 4
2
circles by clockwise.
¢Û
¢Ù
¢Ü
4. Lubricate:
¡¤Coil spring backboard assy
¡¤Drive disc
¢Ú
5. Mount:
¡¤Drive disc ¢Ù
¢Ü
¢Û
Caution
¢Ù
Apply grease
¢Ý
The projection ¢Ûneed to be mounted into two
hole groove ¢Úand the coil spring hook hanger
¢Ý also need to be mounted into the hole groove
¢Ü.
-211-
¢Þ
12Nm
¢Ý
¢Û
6. Mount:
¡¤Torsion spring (starting ratchet pawl)¢Ù
¡¤Starting ratchet pawl ¢Ú
¡¤Hog ring ¢Û
¡¤Compress spring ¢Ü
¡¤Guide plate ¢Ý
¡¤Screw pin ¢Þ
¢Ú
¢Ù
¢Ü
¢Û
¢Ú
¢Ù
Caution
When mounting torsion spring (starting ratchet
pawl), make the end ¢ßof torsion spring align
to groove on the drive disc.
¢ß
a
7. Turn the drive disc 3 circles by clockwise,
and pre-tighten the coil spring.
¢Ù
¢Û
¢Ú
¢Ü
-212-
8. Mount:
¡¤Starting lever ¢Ù
¡¤Cover ¢Ú
Caution
Make the rope accross the hole of left side,
and knit it in order to the rope is not pulled into
left side cover.
¡¤After kniting ¢Ü, and untie it ¢Û.
9. Mount:
¡¤Washer ¢Ù
¡¤Washer ¢Ú
¡¤Reverse lever system ¢Ü
Caution
Coat sealing gum on the bolt ¢Û
10. Mount:
¡¤Manual starting system ¢Ù
¢Ù
7Nm
6 places
(VII) Mount the engine on the finished vehicle
Its steps is opposed to steps of “Engine Disassembly”
Caution
Support motorcycle firmly for avoiding turning over.
1. Mount:
¡¤Engine
Mount the engine from right side of frame.
2. Mount:
¡¤Bolt ¢Ù(Installation position of engine-rear
lower)
¡¤Bolt ¢Ú(Installation position of engine-rear
upper)
¡¤Bolt¢Û(Installation position of engine-front)
¡¤Bolt ¢Ü(Installation position of engine-top)
Caution
¡¤Mount all the installing bolts from right side
of motorcycle
¡¤Turn the nut and bolt temporily, but don’ t
fasten them at this time.
-213-
3. Mount:
¡¤Drive assy of rear wheel and rear wheel fork
Assembly steps:
1) Lubricate following parts before mounting
the rear wheel fork
¡¤Bearing ¢Ù
¡¤Oil sealing ¢Ú
¡¤Bushing ¢Û
¡¤Coupling bolt of rear arm ¢Ü
¡¤Spling of drive shaft ¢Ý
Spline of main drive gear¢Þ
Lubrication oil:
Lithium base lubrication oil
2) Mount the drive shaft ¢ßon the spline ¢Þof
main drive gear.
3) Pull rear wheel fork forward, and mount
drive shaft ¢ßon the rear joint of direction knot
¢à.
4. Connect:
Rubber bushing etc ¢Ù.
5. Mount:
¡¤Coupling bolt ¢Úof rear arm
¡¤Rear arm nut ¢Û
¡¤Coupling bolt ¢Üof rear arm
Caution
Turn the rear arm shaft bolt and rear arm shaft
nut temporaly, and don’t fasten them at this time.
6. Check:
¡¤Operation of drive shaft
Checking steps:
¡¤Hold the front wheel and put the proper
bracket on the fram for lifting rear wheel
¡¤Front and rear turning rear wheel
¡¤Front and rear turning rear wheel
Check the operation of driving shaft. If the operation is not good, check the installation of drive
shaft again.
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7. Fasten:
¡¤Bolt ¢Ù (Installation position of engine-rear
lower)
¡¤Bolt ¢Ú(Installation position of engine-rear
lower)
¡¤Bolt¢Û(Installation position of engine-front)
¡¤Bolt ¢Ü(Installation position of engine-top)
¡¤Coupling bolt of rear arm ¢Ý(Rear arm
shaft-right)
¡¤Coupling bolt of rear arm ¢Þ (Rear arm
shaft-ringt)
¡¤Rear arm nut ¢ß
Bolt (Installation position of engine-rear lower)
33Nm(3.3m.bg.24ft.lb)
Bolt(Installation position of engine-rear lower)
33Nm(3.3m.bg.24ft.lb)
Bolt(Installation position of engine-front)
48Nm(4.8m.bg.35ft.lb)
Bolt(Installation position of engine-top)
33Nm(3.3m.bg.24ft.lb)
Coupling bolt of rear arm(rear arm shaft-left)
130Nm(13m.bg.4.3ft.lb)
Coupling bolt of rear arm(rear arm shaft-ring)
0.6Nm(0.6m.bg.94ft.lb)
Rear arm nut:
130Nm(13m.bg.94ft.lb)
Bolt(rear shock absorber-top):
50Nm(5.0km.bg.36ft.lb)
8. Mount:
Dust cap ¢áof rear arm shaft
9. Connect:
¡¤Breather tube ¢Ù(rear drive)
Refer to “Diagram of vehicle” in section 6 of
chapter
10. Connect:
¡¤Spark plug terminal ¢Ù
¡¤CDI magneto terminal ¢Ú
¡¤“Reverse” switch terminal ¢Û
¡¤“Neutral” switch terminal
¡¤Breather tuke ¢Ü(rankcase)
¡¤Brake cable ¢Ý
Refer to “Diagram of vehicle” in section 6 of
chapter15-84
-215-
11. Mount:
¡¤Starting motor ¢Ù
¡¤Coupling plate ¢Úof starting motor
¡¤Wire of starting motor ¢Û
Caution
Lubricate o-ring before mounting the starting
motor.
12. Mount:
¡¤Spring ¢Ù
¡¤Foot rest ¢Ú(right)
Bolt(foot rest)
65Nm(6.5m.47ft.lb)
Bolt(shifting pedal):
10Nm(1.m.7.2ft.lb)
Bolt(foot rest)
65Nm(6.5m.47ft.lb)
Bolt(foot rest)
30Nm(3.0m.22ft.lb)
13. Mount:
¡¤Bracing ¢Ùof front fender
¡¤Shifting pedal ¢Ú
¡¤Foot rest ¢Û(left)
14. Connect
¡¤Rear brake cable ¢Ù(rear)
¡¤Rear brake rod ¢Ú
15. Adjust:
¡¤Rear brake
Refer to “Adjustment of rear brake lever and
brake pedal” in chapter 3
-216-
16. Mount:
¡¤Exhaust pipe ¢Ù
¡¤Silencer ¢Ú
17. Fill oil :
¡¤Crankcase
Total:2.2L
Refer to relevant part in section 5 of chapter
2.
18. Adjust:
¡¤Free clearance of plunger(clutch)
19. Adjust:
¡¤Position of drive selection lever
Refer to relevant part in section 5 of chapter
2
20. Adjust:
¡¤Idle speed
Refer to relevant part in section 5 of chapter
2 Idle speed:1400-1500r/min
21. Adjust:
¡¤Idle stroke of throttle cable
Refer to relevant part in section 5 of chapter
2 Idle stroke of throttle cable3-5mm
-217-
ChapterVI Vehicle Ordinary Trouble and
Judgment
Trouble
Caution:
The following trouble, not including all
possible troubles, is a help for trouble guide
.Please refer to relevent contents for the
inspection, adjustment and replacement of
parts.
( I )Starting trouble/difficulty
1`Fuel system
( 1 )Fuel tank
.No oil
.Fuel filter is clogged
.Fuel filter net is clogged
.Breather tube is clogged
.Fuel is deteriorated or polluted
( 2 )Fuel cock
.Inlet tube is clogged
.Fuel cock is not be opened
( 3 )Carburetor
.Fuel is deteriorated or polluted
.Starting nozzle is clogged
.Air tube is clogged
.Float is distorted
.Needle valve is worn
.Improper valve sealing
.Improper installation of starting nozzle
.Starting nozzle is clogged
.Improper work of starting plug
( 4 )Air filter
.Core of air filter is clogged
2`Electric system
( 1 )Spark plug
.Improper spark plug clearance (standard
clearance is 0.6-0.7mm)
.Terminal is worn
-218-
.Spark plug is polluted
.wrong spark plug heat value
.Inefficient spark plug cap
( 2 )Ignition coil
.Primary coil/secondary coil is broken
or shortened
.Inefficient high voltage wire
.Ignition coil is broken
( 3 )CDI magneto system
.CDI is failure
.Coil is failure
.Charging coil is failure
.Woodruff key is bad
( 4 )Switches and wires
.Main switch is bad
.The engine is off and switch is inefficient
.Wires is broken or shortened
.Neutral switch is bad
.Starting switch is bad
.Rear brake switch is bad
( 5 )Starting motor
.Staring motor is bad
.Starting relay is bad
.Off power relay is bad
.Super clutch is bad
3`Cylinder
( 1 )Cylinder body and cylinder head
.Spark plug is loosen
.Cylinder head or cylinder body is loosen
.Cylinder head washer is damaged
.Cylinder body is worn or damaged
( 2 )Piston and piston ring
.Wrong needle valve position
.Improper piston ring installation
.Main jet is clogged or loosened
.Piston ring is worn and out of elastic-
.Fuel is deteriorated or polluted
.Wrong float chamber oil level
ity
.Piston is damaged or crack
(2)Air filter
( 3 )Valve, camshaft and crank shaft
.Core of air filter is clogged
.Valve didnt closed entirdly
.Improper match between valve and valve
(IV)Shifting trouble
1.Shifting difficulty
seat
.Wrong port timing
.Valve spring is damaged
Refer to “slippig of clutch”and “ablation of
clutch”in this chapter
.Valve camshaft is damaged
.Crank shaft is damaged
2.Shifting pedle is clogged
(1)Shifting shaft groups
.Shifting shaft is bend
(II)Poor idle speed performance
.Shifting lever groups is damaged
(1)Carburetor
.Starting plug is not close entirely
(2)Shifting cam, shifting fork
.Idle metering jet is loose
.There is foriegn matter in shifting cam-
.Idle metering jet is clogged
.Idle air metering jet is clogge
.Improper idle adjustment
shaft recess
.Shifting fork is clogged
.Shifting fork shaft is bend
.Leakage of carburetor
(2) Electric system
(3)Driving system
.Spark plug is bad
.Driving gear is clogged
.CDI is bad
.Coil is bad
.Foreign matter is clogged
.Incorrect driving system installation
.Charging coil is bad
.Ignition coil is bad
3.Shift is out of gear
(3)Valve system
(1)Shifting shaft groups
.Improper adjustment of valve clearance
.Improper adjustment of limited lever
.Core of air filter is clogged
(III)Poor middle and high speed performance
Refer to “starting trouble/difficulty”and poor
idle speed performance section in this chapter.
(1)Carburetor
postion
.Limited lever can’t back
(2)Fork
.Fork is worn
(3)Shifting cam
.Recess of shifting cam is worn
-219-
(4) Driving system
¡¤Claw of gear end is worn
(V) Clutch slips
(1) Clutch
¡¤Improper adjustment of clamp plate release
rod clearance of clutch
¡¤Clutch spring is loosen (primary clutch and
/ secondary clutch)
¡¤Clutch spring is fatigue (primary clutch and/
secondary clutch )
¡¤Friction disc is worn
¡¤Clamp plate is worn or deformed
¡¤Main clutch shoe lining is worn
(2)Engine oil
¡¤Low oil level
¡¤Poor quality(viscosity is low)
¡¤Deteriorated oil
(VI) clutch is locked
¡¤(1)Clutch
¡¤Clutch is out of control or the clearance is
too big
¡¤Improper match between release lever and
release rod
¡¤Deformed clutch clamp plate
¡¤Friction disc is deformed
¡¤Clutch hub is broken
(2)Engine oil
¡¤High oil level
¡¤Poor oil quality(viscosityis high)
¡¤Deteriorated oil
(VII) Engine is overheat
(1)Ignition system
¡¤Improper spark plug clearance
¡¤Wrong spark plug heating value
¡¤CDI failure
-220-
(2) Fuel system
¡¤Main jet of carburetor is wrong
¡¤Improper oil level
¡¤Core of air filter is clogged
(3) Cylinder system
¡¤Serious carbon deposition
(4)Engine oil
¡¤Improper oil level
¡¤Improper oil toughness
¡¤Poor oil quality
(5)Brake
¡¤Brake is stagnant
(VIII) Brake trouble
Troubles: Poor brake efficient
¡¤Brake shoe lining is worn
¡¤Serious wear of brake shoe
¡¤Brake shoe oil is too much
¡¤Improper adjustment of brake clearance
¡¤Improper brake arm position
¡¤Returing spring is fatigue and damaged
¡¤Brake cable is broken
(IX) Shock absorber failure/improper operation
1. Shock absorber failure:
¡¤Damping rod is bent or damaged
¡¤Bad oil sealing lip
¡¤Spring of shock absorber is fatigue
2. Improper operation
(1) Handle bar
¡¤Improper installation or handlebar is bent
(2) Steering system
¡¤Wrong toe-in
¡¤Steering pillar is bend
¡¤Improper installation of steering pillar bearings
¡¤Holding seat of steering pillar or sealing ring
is damaged
¡¤Rod is bent
¡¤Spherical connection is bent
¡¤Battery fails
¡¤Rectifier fails
¡¤Wrong connection of ground
¡¤Main switch or lighting switch fail
¡¤Use-life of bulb is end
(3) Wheel tyre
¡¤Uneven pressure on two sides of tyre
¡¤wrong tyre pressure
¡¤uneven tyre wear
(4) Front/Rear tyre
¡¤deformed run
¡¤Loosen bearing
¡¤Front wheel axle is bent or loosen
¡¤Radial run out of front/rear wheel is too big
(5) Frame
¡¤Bend
¡¤Damaged frame
(6)Rear wheel fork
Bearing or bushing is worn
Rear wheel fork is bent or damaged
(X) Lighting system
1. Head light is out of work
¡¤buld is trouble
¡¤Too big load
¡¤Charging difficulty(Lighting coilor rectifier is
failure)
¡¤Wrong connection of wire
¡¤Wrong connection of ground
¡¤Poor connection(Main switch or lighting
switch)
¡¤use-life of bult is end
2. Bulb is off
¡¤Bulb is out of specification
-221-