Baja WD250U User manual

WD250U Service Manual
For any questions please contact Baja Motorsports at 888-863-2252

Content
Content...........................................................................................................................2
Chapter I General description........................................................................................6
Section 2 Special tools, instruments & meters.............................................................. 7
(I) Special tools....................................................................................................7
Section 3 Identication code, label of model and engine No........................................9
Section 4 Points for attention in maintenance................................................................9
Section 5 Specication................................................................................................. 13
I. How to use conversion table of unit............................................................... 13
(1) How to use conversion table........................................................................ 13
(2) Denition of unit..........................................................................................13
II. Basic specication.........................................................................................14
III. ATV body..................................................................................................... 15
IV. Electric system............................................................................................. 16
V. Maintenance specication of engine............................................................. 18
Section 6 Wiring diagram of ATV................................................................................ 21
(I) Technical explanation and requirement, details of relative component........ 21
(II) Wiring diagram (1)...................................................................................... 23
(III) Wiring diagram (2)..................................................................................... 24
(IV) Wiring diagram (3)..................................................................................... 25
Section 7 Requirements for torque of fastener............................................................. 26
(1) ATV body..................................................................................................... 26
(2) Engine.......................................................................................................... 28
(3) General torque specication........................................................................ 30
Section 8 Lubrication................................................................................................... 31
(1) Lubrication oil way........................................................................................31
(2) Lubrication diagram..................................................................................... 32
Section 9 Lubrication point and type of lubricants...................................................... 34
(1) ATV body..................................................................................................... 34
(2) Engine.......................................................................................................... 35
Chapter II Maintenance and adjustment of vehicle...................................................... 36
Section 1 Periodic maintenance/lubrication................................................................ 36
Section 2 Disassembly and assembly of cushion, fender and fuel tank....................... 37
(I) Cushion......................................................................................................... 37
(II) Rear fender.................................................................................................. 38
(III) Fuel tank..................................................................................................... 40
(IV) Front fender................................................................................................ 42
2

Section 3 Maintenance and adjustment of vehicle body.................................................................... 44
(I) Wear inspection of front and rear brake............................................................................ 44
(II) Adjustment of front brake..................................................................................................44
(III) Adjustment of free clearance of left lever and rear brake pedal.......................................45
(IV) Position adjustment of steering lever............................................................................. 47
(V) Lubricating oil level inspection of rear driving gearcase................................................. 47
(VI) Replacement of engine oil of rear driving gearcase....................................................... 48
(VII) Rubber sleeve inspection of rear wheel fork................................................................. 49
(VIII) Inspection of steering system....................................................................................... 49
(IX) Adjustment of toe-in of front wheel............................................................................... 50
(X) Inspection of front/rear shock absorber........................................................................... 51
(XI) Adjustment of rear shock absorber............................................................................... 51
(XII) Inspection of tire.......................................................................................................... 52
(XIII) Inspection of rim........................................................................................................ 53
Section 4 Maintenance and adjustment of electrical appliance......................................................... 54
(I) Inspection of battery......................................................................................................... 54
(II) Inspection of fuse............................................................................................................ 55
(III) Replacement of headlight lamp.......................................................................................56
Section 5 Maintenance and adjustment of engine.............................................................................. 58
(I) Adjustment of clutch......................................................................................................... 58
(II) Cleaning of air lter.........................................................................................................58
(III) Inspection of spark plug................................................................................................. 60
(IV) Adjustment of idle speed.............................................................................................. 61
(V) Adjustment of free clearance of throttle grip................................................................. 61
(VI) Adjustment of speed limiter........................................................................................... 62
(VII) Adjustment of valve clearance.................................................................................... 63
(VIII) Adjustment of timing chain tension.............................................................................65
(IX) Inspection of ignition timing........................................................................................ 66
(X) Measuring of compressive force..................................................................................... 67
(XI) Inspection oil quantity of engine................................................................................... 68
(XII) Replacement of engine oil and inspection of oil ow.................................................. 69
Chapter III Repair and maintenance of vehicle body.........................................................................71
Section 1 Rear driving gearcase and driving shaft.............................................................................71
(I) Troubleshooting.................................................................................................................72
(II) Inspection.........................................................................................................................72
(III) Troubleshooting table.....................................................................................................73
(IV) Disassembly.................................................................................................................. 74
(V) Inspection.........................................................................................................................77
(VI) Pad choice of main driving gear and shift gear............................................................ 79
(VII) Installation....................................................................................................................80
3

Section 3 Rear wheel/Rear brake/Rear wheel axle................................................................ 81
(I) Removal steps....................................................................................................... 83
(II) Inspection stepes.................................................................................................. 85
(III) Installation steps................................................................................................. 88
Section 4 Steering operation system...................................................................................... 92
(I) Removal steps of steering bar................................................................................ 93
(II) Removal steps of steering vertical column welding............................................ 94
(III) Inspection content............................................................................................... 95
(IV) Installation steps................................................................................................. 96
(V) Installation steps of steering bar.......................................................................... 99
Section 5 Front shock absorber and front wheel fork............................................................ 100
(I) Disassembly........................................................................................................... 101
(II) Inspection steps.................................................................................................... 103
(III) Installment steps................................................................................................. 104
Section 6 Rear shock absorber and rear wheel fork............................................................... 107
(I) Disassembling steps.............................................................................................. 108
(II) Checking steps..................................................................................................... 110
(III) Mounting steps................................................................................................... 112
Chapter IV Electric appliance................................................................................................ 115
Section 1 Electric assembly.................................................................................................... 115
Section 2 Inspect switch......................................................................................................... 116
(I) Inspect switch........................................................................................................ 116
(II) Inspect the switch circuit..................................................................................... 117
Section 3 Check headlight lamp............................................................................................. 118
Wire diagram.............................................................................................................. 119
Section 4 Troubleshooting the ignition system failure........................................................... 120
Section 5 Running starting circuit.......................................................................................... 124
Section 6 Troubleshooting electric starting system................................................................ 125
Section 7 Starting motor......................................................................................................... 128
Section 8 Check starting motor............................................................................................... 129
Section 9 Battery will not hold charge.................................................................................... 131
Section 10 Troubleshooting.................................................................................................... 133
Section 11 Inspection of lighting system................................................................................ 135
(I) Headlight not working........................................................................................... 135
(II) Taillight not working............................................................................................ 136
Section 12 Troubleshooting.................................................................................................... 137
(I) If indicated lamp is out of work............................................................................. 137
Section 13 Inspection of signal system.................................................................................. 139
(I) If the neutral indicated lamp is out work............................................................... 139
(II) If the reverse indicated lamp is out work............................................................. 140
(III) If the HB indicated lamp is out work.................................................................. 141
Chapter V Engine................................................................................................................... 142
Section 1 Disassembly of Engine........................................................................................... 142
(I) Remove the engine from nished ATV.................................................................. 142
(II) Disassembly of engine......................................................................................... 145
4

Section 2 Inspection and maintanence of engine............................................................................... 159
Section 3 Assembly and adjustment of engine................................................................................... 183
(I) Closing assembly of left & right crankcase...................................................................... 183
(II) Assembly of right crankcase............................................................................................ 187
(III) Assembly of left crankcase............................................................................................. 196
(IV) Selection and installation of adjusting washer............................................................... 207
(V) Assembly of cylinder head.............................................................................................. 209
(VI) Manual starting mechanism and others.......................................................................... 209
(VII) Mount the engine on the nished vehicle..................................................................... 219
Chapter VI Vehicle Troubleshooting.................................................................................................. 220
(I) Starting trouble/difculty................................................................................................... 227
5

Chapter I General Description
Section 1 Description
1. Front wheel
2. Headlight
3. Forward/Reverse lever
4. Shift pedal
5. Fuel valve
6. Hand-operated lever
7. Air choke
8. Taillight
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 rear brake lever
17. Hand-operated parking brake
18. Main switch lock
19. Throttle grip
20. Right front brake lever
21. Left switch unit
22. Left and right mirror
CAUTION:
The ATV you purchased may be slightly different from the pictures in the
manual due to improvements.
1
2
34
56 7 8
9
10 11 12 13 14 15
16 17 18 19
20
21
22
22
6

Section 2 Special tools, instruments and meters
(I) Special tools
There are special tools needed to properly adjust and assemble this unit. These tools are
intended to prevent maintenance defects and damage.
1. Wrench for valve adjustment, mainly used to adjusting the valve clearance. Specication:
3mm, 90890-01311
2. Puller for piston pin, used for removing piston pin.
3. Remover for rotator, mainly for pulling the magneto rotator from crank.
4. Clamp for rotator, for clamping magneto rotator when removing it to prevent it’s rotation due
to torque force.
5. Stop rotating meter for rotator, used for removing and assembling rotator of kick starter.
6. Puller for crank, for disassembling crank from crankcase.
7. Puller for rocker shaft, used for the removing rocker shaft.
8. Compressing tools for spring of valve, for xing and compressing spring when assembling
valve lock clamp.
9. Assembling and disassembling tools for valve guide.
10. Assembling buffer, used for assembling crank and balancing gear.
11. Hollow sleeve, for assembling crank and balancing gear.
12. Assembling tool for crank, used for assembling crank and balancing gear.
13. Assembling and disassembling joint for universal coupling.
14. Assembling and disassembling disc, used for assembling and disassembling reverse gear.
15. Fixed puller for gear.
7

(II) Instruments and meters
The following instruments and meters can be selected with
reference to the same type of vehicle.
8

Section 3 Identication code, label
of model and engine No.
Identication code
Engraved in the left or right side of the front
supporting main tube of engine of frame
Engine No.
This is engraved on the top middle part of the
right crankcase of engine.
Section 4 Points for attention in maintenance
1. Preparation when disassembling
1.1 First clean the dirt and mud from the vehicle before removing or disassebmling.
1.2 Use proper cleaning device and tools.
1.3 Keep all the components away from re. Pay attention to hot surfaces such as the engine,
exhuast etc.
1.4 When disassembling the ATV, keep alike parts such as gear pairs, cylinder, piston, etc.
together. When assembling or replacing these components they should be kept in pairs.
1.5 When disassembling the engine, clean all components and place in a tray in the order of dis-
assembly, not only increasing the assembling speed, but also ensuring the correct assembly.
2. Replace the components
When replacing components use only the products, lubricants and grease recommened by manu-
facturer.
3. Oil seal, shim, O-ring, clip, split pin, elastic washer
3.1 When disassembling to maintain the engine, to ensure that the reassembled engine has good
sealing and connected parts are xed and reliable, 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 a
clean condition.
3.2 When reassembling, apply lubricant to all the alike components and bearings,
apply grease for oil seal.
9

4. Clip
4.1 Before assembling, check all the clips carefully.
Replace with a new one after removing from piston
pin. When mounting clip ring (1), make the sharp
end face (2) on the opposite position of
impacted face (3) of clip. (see gure at left)
5. Locking washer/shim and location pin
5.1 When reassembling, replace all locking washer/
shim and location pin (a) . After bolt or nut is in the
lock position, bend and x 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 (specication of manufacturer) outside. When
assembling oil seal, apply a thin layer of lithium-
based grease on the lip of oil seal.
CAUTION:
Do not dry inside of bearing by blowing out with
compressed air, this will cause damage to the surface
of the bearing.
10

7. Check of electric parts
7.1 Make sure there is no rust, dirt or moisture at the
connection, if there is blow it dry or clean.
7.2 The electrolyte inside the battery is corrosive,
take extra precautions as to not get this on your
body.
7.3 When repairing wires on electrical parts, remove
the wire on the terminal of negative pole of battery
(see gure 7.1). When tightening or loosening bolt
on terminal of battery, do not let the wrench contact
the engine or other metal parts of the vehicle body to
avoid electric shock.
7.4 When connecting the wire to battery, rst con-
nect the positive pole then connect the negative pole.
After wires are connected, apply clean grease on the
terminal to increase resistence of rust.
7.5 Check the terminal of connector
A. Grip the two terminals of connector together,
check with the multimeter (see gures 7.3 and 7.4)
11

B. If there is slack in the joint, bend the plug pin
upward, then connect with connector plug (see gure
7.5)
7.6 Before mounting the new fuse, check if the load
of fuse on the components are correct, especially the
portion being broken regularly, then mount the fuse
having proper current value.
7.7 There are two kinds of wire connectors, a single-
head connector, another a multi-head connector.
Before connecting single-head connector, make sure
there are no defects on the housing of the joints.
When inserting the joint, after defects are xed, put
plastic coating on.
In general, multi-head connectors are plastic and
designed to lock. When disassembling the connector,
rst open lock; when connecting again make sure the
joints are in good condition and there are no bends
or twists. After connecting, align the lock device and
lock.
8. Use torque spanner to tighten screw and nut, and
as per specied torque. It should be tightened in
steps from big to small, from inside to outside and
along the direction of a diagonal line that intersects
(see gure 8.1).
12

   Section5Specication
I. How to use conversion table of unit
(1) How to use a conversion table
All the specied documents in this manual are taken SI and Metric as unit. With the following
conversion table, metric unit could ne conversed into imperial unit.
Metric Multiply Imperial
mm 0.03937 in
2mm x 0.03937 = 0.08in
Conversion Table
Known Unit Multiply Product
Torque m•kg
m•kg
cm•kg
cm•kg
7.233
86.794
0.0723
0.8679
ft.lb
in•lb
ft•lb
in•lb
Weight kg
g
2.205
0.03527
lb
oz
Length km/hr
km
m
m
cm
mm
06.214
0.6214
3.281
1.094
0.3937
0.03937
mph
mi
ft
yd
in
in
Volume/capacity cc(cm³)
cc(cm²)
lit(liter)
lit(liter)
0.03527
0.06102
0.8799
0.2199
oz(IMP lig.)
cu•in
qt(IMP lig.)
gal(IMP liq.)
Others kg/mm
kg/cm²
Centrigrade
55.997
14.2234
9/5(˚C)+32
lb/in
psi(lb/in2)
Fahrenheit(˚F)
Unit Read Denition Measurement
mm
cm
Millimeter
Centimeter
10ֿ³Meter
10ֿ²Meter
Length
Length
kg kilogram 10³Gram Weight
N Newton 1 lilo x meter/second Force
Nm
m•kg
Newton meter
Meter kilogram
Newton x meter
Meter x kilo
Torque
Torque
Pa
N/mm
Pascal
Newton per millimeter
Newton x meter²
Newton/centimeter
Pressure
Rigid of spring
L
cm³
Liter
Cubic centimeter ¯ ¯
r/min Revolutions per minute −Rotational speed
(2) Denition of unit
13

II.Basicspecication
Item Specications
Dimension:
Overall length 1960mm
Overall width 1010mm
Overall height 1120mm
Height of cushion 780mm
Axle base 1160mm
Front wheel distance 785mm
Rear wheel distance 770mm
Min.ground clearance 155mm
Min.turning radius 2900mm
Basic weight:
Engine oil(with full tank) 220kg
Engine Single-cylinder, 4
stroke, air cooled
Displacement 229.6cm³
Cylinder bore x stroke 71 x 58mm
Compression ratio 8.7:1
Starting system Electric starter or
handoperated starter
Lubrication system Pressure splash
Engien oil SAE20W40,
SAE10W30,
SAE5W30
Classication of Model SE,SF,SG or
recommended engine oil above
Periodic oil replacement 1.5L
Replace lter 1.6L
Overall capacity 1.8L
Oil capacity of gearbox 0.27L
Model: SAE80API”GL-4”
gear oil of standard
double curved face
Capacity of fuel tank 12L, Non-lead gas #90
Capacity of reserve fuel tank 1.6L
Carburetor:
Type Vacuum lm type
Type of spark plug D7RTC
Clearance of spark plug 0.6-0.7mm
Type of clutch Wet automatic
centrifugal type
Output
Primary reduction system Gear driving
Reduction ratio 73/22(3.318)
Secondary reduction system Axle driving
Reduction ratio 19/18x46/11(4.414)
Output type Non-cycle,5 gear
forward, gear back
Operation Left-foot operation
Item Specications
Shifting type
1st speed 34/12(2.833)
2nd speed 34/19(1.789)
3rd speed 29/22(1.318)
4th speed 26/25(1.040)
5th speed 23/28(0.821)
Reverse gear 73/22x34/12x19/18x46/11(41.5)
Frame
Bracket Steel tube
Caster angle 13˚
Toe-in of tire 0-5mm
Tire
Type Vacuum
Spec. of front wheel AT22x7-10
Spec. of rear wheel AT22x10-10
Pressure of front wheel 20kpa
Pressure of rear wheel 25kpa
Brake
Type of front brake Drum(full-closed)
Operation Right-hand
Type of rear brake Drum(full-closed)
Operation Left-hand and right foot
Front suspension Independent
Rear suspension Center shock absorber
Spec. of shock absorber
Front shock absorber Spring/oil pressure
Rear shock absorber Spring/oil pressure
Electric system
Ignition system C.D.I
Magneto system A.C. magneto
Battery/capacity Free of maintenance,
12N14-BS/12V, 14AH
Headlight 12V, 25W/25Wx2
Taillight 12V,10Wx1
Neutral indicator 12V,3Wx1
Reverse indicator 12V,3Wx1
High-beam indicator 12V,3Wx1
14

III. ATV body
Item Standard Limit
Steering system
Type of steering bearing
Powder metallurgy sliding
bearing
Type Spock rim, tubeless tire
Material of rim Steel plate
Size of tire AT22x7-10
Size of rim AT 10x5.5
Radial runout of rim 2.0mm
Lateral swing of rim 2.0mm
Type Hydraulic disc
Type Spoke rim, tubeless tire
Material of rim Steel plate
Sixe of tire AT22x10-10
Size of rim AT 10x8.0
Radial runout of rim 2.0mm
Lateral swing of rim 2.0mm
Type Drum type
Outside diameter of brake drum 160mm 161mm
Thickness of friction piece 4.0mm 2.0mm
Free length of back spring of brake
shoe
71.0mm
Free play of brake lever (left) 5-7mm
Free play of brake lever (right) 5-7mm
Free play of rear brake pedal 20-30mm
Free play of throttle grip 3-5mm
Front
Wheel
Front Brake
Rear
Wheel
Rear
Brake
Brake lever
and brake
pedal
15

III. ATV body
Item Specication Limit
Elastic coefcient of spring K1 10N/mm/0-117mm
Free length of suspending spring 293mm
Stroke of shock absorber 117mm
Pre-tension force of spring is
adjustable or not
Not adjustable
Elastic coefcient K2 49N/mm/8-85mm
Free length of suspending spring 263mm
Assembling length 244mm
Stroke of shock absorber 85mm
Pre-tension force of spring is
adjustable or not
Adjustable
Assembling free play (left-end) 1.0mm
Assembling free play (right-end) 1.0mm
Front suspension
system
Rear suspension
system
Rear wheel fork
Item Standard
Voltage of electric system 12V
Type D7RTC
Resistence 10Ω
Clearance of spark plug 0.6-0.7mm
Resistence of primary coil At 20˚C(68˚F), 0.5-1.5Ω
Resistence of secondary oil At 20˚C(68 ˚F), 4.6-7.6Ω
Clearance of min. spark 6mm(0.24in)
Ignition timming (before upper
stop point
10˚/2300r/min
Advancing angle of ignition (be-
fore ipper stop point)
30˚/4300r/min
Type of ignition advance
Spark plug
Ignition coil
Ignition system
IV. Electric system
16

IV. Electric system
Item Standard
Resistence of induction coil/color At 20˚C (68˚F), 189-231Ω Blue-black
Resistence of source coil/color At 20˚C (68˚F), 470-530Ω yellow/green-red
Type of C.D.I. Electric capacity contactless type
No-loading adjusting voltage 14.1-14.9V
Voltage-resisting value 200V
Type A·C magneto
Rated output voltage At 2000r/min 14-15V
Coil resistence/color At 20˚C (68˚F) 1.0-1.2˚ white-white
Specic gravity 1.28
Type/capacity 12N14-BS/12V, 14Ah
Type Fuse
Main fuse 20A
Reserved fuse 20A
Coil resistence At 20˚C (68˚F), 72-88Ω
Diode Yes
Type Constant mesh type
Output power 0.35KW
Resistence of armature coils At 20˚C (68˚F), 0.004-0.005Ω
Ampere 100A
coils resistence At 20˚C (68˚F), 4.8-5.3Ω
Magneto
Rectier
Charging
system
Battery
Broken
circuit of
system
Relay of cut-
off current
Electric start-
ing motor
system
Electric
starting relay
system
17

V.MaintenanceSpecicationofEngine
Item Standard Limit
Axle Drive
Meshing clearance of last end gear
Meshing clearance of middle gear (forward)
Meshing clearance of middle gear (backward)
0.1-0.2mm
0.1-0.2mm
0.10-0.25mm
Lubrication system:
Type of oil lter
Type of oil pump
Clearance of side
Endface clearance “A” or “B”
Releasing pressure of safety valve
Wire lter net
Rotor type, pressure splash type lubrication
0.04-0.09mm
0.15mm
80-120Kpa
0.09mm
0.20mm
Cylinder
Bore size
70.97-71.02mm
(Distance between measuring point and
upper endface of cylinder is 40mm) 71.10mm
Cylinder head
Flatness of lower endface
Measure the surface warp of every portion
on the lower endface of cylinder head with
ruler.
0.10mm
Timing chain
Type of timing chain
Tension type of timing chain
Roller chain
Free adjustment
Pneumatic camshaft:
Driving method
Roundness tolerance of camshaft
Outside diameter of camshaft
Cam size
Exhaust: A
B
C
Intake: A
B
C
Chain driven
24.96-24.98mm
36.582-36.682mm
30.252-30.352mm
6.572-6.692mm
36.537-36.637mm
30.131-30.231mm
6.527-6.647mm
0.03mm
36.482
30.152
36.437mm
30.031mm
Rocker arm/ Rocker arm shaft
Outside diameter of shaft
Inside diameter of rocker arm
Clearance between arm and shaft
11.981-11.991
12.000-12.018
0.009-0.037
Valve spring
Inside spring
Free length:intake/exhaust
Setting length when valve is closed:intake/exhaust
Compressing pressure when assembling:intake/exhaust
Limit value of squareness:intake/exhaust
Twisting direction of spring(topview):intake/exhaust
35.5mm
30.5mm
82.4-100.0N
counterclockwise
2.5˚/1.6mm
18

Item Standard Limit
Valve spring:
Outside spring:
Free length: intake/exhaust
Setting length when valve is closed:
Compressing pressure when assembling:intake/exhaust
Limit value of sqaureness:intake/exhaust
Twisting direction of spring (top view):intake/exhaust
37.2mm
32.0mm
162.8-200.1N
clockwise
2.5˚/1.6mm
Valve, valve seal, valve guide
Valve clearance (it’s cold): intake
exhaust
Size of valve
A-diameter of valve head exhaust
intake
B-width of valve face intake/exhaust
C-width of valve set intake/exhaust
D-limit thickness intake/exhuast
Outside diametes of valve stem exhaust
intake
Inside diameter of valve guide: intake/exhaust
Clearance between valve stem and guide:
exhaust
intake
Roundness of valve seem
0.05-0.09
0.11-0.15
28.4-28.6mm
33.9-34.1mm
1.7-2.8mm
0.9-1.1mm
0.8-1.2mm
5.960-5.975mm
5.975-5.990mm
6.000-6.012mm
0.025-0.052mm
0.10-0.037mm
1.6mm
0.10mm
0.08mm
0.03mm
Piston ring:
First ring
Type
Size (BxT)
Clearance of endface (in assembling)
Clearance of side (in assembling)
Second ring
Type
Size (BxT)
Clearance of endface (in assembling)
Clearnace of side (in assembling)
Oil ring
Size (BxT)
Clearance of endface (in assembling)
Bucket-shaped back round
1.2x2.8mm
0.15-0.30mm
0.03-0.07mm
Flat type
1.2x2.8mm
0.15-0.30mm
0.02-0.06mm
2.5x2.8mm
0.2-0.7mm
0.4mm
0.12mm
0.4mm
0.12mm
V.MaintenanceSpecicationofEngine
19

V.MaintenanceSpecicationofEngine
Item Standard Limit
Piston
Piston size “D”
Measuring point “H” (from bottom line of piston lower portion)
Piston offset
Direction of piston offset
Clearance between piston and cylinder
Outside diameter of piston pin
Inside diameter of pin hole
70.92-70.97mm
4.0mm
0.5mm
Inward
0.04-0.006
15.991-16.000mm
16.002-16.013mm
0.15mm
Driving method of balancing block gear driving
Connecting rod of crank
Limit value of runout: C1
C2
Width of crank “A”
Small end free play of connecting rod “F”
Big end free play of connecring rod “D”
Big end radial clearance of connecting rod “E”
55.95-56.00mm
0.8-1.0mm
0.35-0.65mm
0.010-0.025mm
0.03mm
0.06mm
2.0mm
Automatic centrifugal clutch
Clutch shoe: quantity
thickness
Clutch messhing revolution
Clutch stalled revolution
Free length of back spring of brake shoe
Clutch:
Action method of clutch
Clutch piece: quantity
thickness
Friction piece: quantity
thickness
Spring of clutch: quantity
free length
3 pieces
2.0mm
1800-2100r/min
3200-3600r/min
32.47mm
Outside pushing type
4 pieces
1.45-1.75mm
5 pieces
2.94-3.06mm
4
35.1mm
1.5mm
2.8mm
32.9mm
Shifting mechanism
shifting method
beding limit of fork guide
shift gear cam drunk and
fork 0.8mm
Transmission device
offset limit of spindle
offset limit of transmission output shaft
0.08mm
0.08mm
20