Yamaha YZ85(W) Service Manual Page 21
- Page / 255
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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SPEC
2-5
Item Standard Limit
Transmission
Transmission type Constant mesh, 6-speed •
• •
Primary reduction system Spur gear •
• •
Primary reduction ratio 65 / 18 (3.611) •
• •
Secondary reduction system Chain drive •
• •
Secondary reduction ratio 47 / 14 (3.357) (YZ85 for EUR, CAN) •
• •
48 / 14 (3.428) (YZ85 for AUS, NZL) •
• •
52 / 14 (3.714) (YZ85LW) •
• •
Operation Left-foot operation •
• •
Gear ratios
1st gear 27 / 11 (2.454) •
• •
2nd gear 32 / 17 (1.882) •
• •
3rd gear 26 / 17 (1.529) •
• •
4th gear 22 / 17 (1.294) •
• •
5th gear 26 / 23 (1.130) •
• •
6th gear 25 / 25 (1.000) •
• •
Max. main axle runout 0.01 mm
(0.004 in)
Max. drive axle runout 0.01 mm
(0.004 in)
Shifting mechanism
Shift mechanism type Cam drum / Guide bar •
• •
Guide bar bending limit •
• • 0.05 mm
(0.002 in)
Air filter type Wet element •
• •
Air filter oil glade Form air filter oil or 2-stroke motor oil •
• •
Carburetors
Model (manufacturer) PWK28 (KEIHIN) •
• •
Throttle cable free play (at the flange
of the throttle grip)
3.0 ~ 5.0 mm (0.118 ~ 0.197 in) •
• •
ID mark 5PA1 00 •
• •
Main jet #138 •
• •
Main air jet #60 •
• •
Jet needle-clip position NBKF-2 •
• •
Needle jet ø2.6 •
• •
Cutaway 3.0 •
• •
Pilot jet #45 •
• •
Bypass ø0.8 •
• •
Pilot outlet ø0.4 •
• •
Pilot screw turns out 2 •
• •
Valve seat size ø2.6 •
• •
Starter jet #62 •
• •
Float height 18 ~ 20 mm (0.71 ~ 0.79 in) •
• •
ENGINE SPECIFICATIONS
- YZ85LW(W) 1
- EAS00000 2
- IMPORTANT MANUAL INFORMATION 3
- HOW TO USE THIS MANUAL 4
- EAS00008 5
- TABLE OF CONTENTS 6
- CHAPTER 1 7
- GENERAL INFORMATION 7
- CAUTION: 10
- IMPORTANT INFORMATION 10
- FUEL AND ENGINE MIXING OIL 11
- CHECKING THE CONNECTIONS 12
- SPECIAL TOOLS 13
- CHAPTER 2 16
- SPECIFICATIONS 16
- ENGINE SPECIFICATIONS 18
- CHASSIS SPECIFICATIONS 23
- ELECTRICAL SPECIFICATIONS 27
- CONVERSION TABLE 28
- GENERAL TIGHTENING TORQUE 28
- TIGHTENING TORQUES 29
- EAS00031 32
- EAS00032 32
- CABLE ROUTING 33
- CHAPTER 3 38
- INTRODUCTION 39
- PERIODIC MAINTENANCE 40
- AND LUBRICATION INTERVALS 40
- EAS00042 41
- Order Job / Part Q’ty Remarks 42
- 14 Number plate 1 42
- EAS00054 43
- EAS00058 44
- CHECKING THE SPARK PLUG 45
- CHECKING THE IGNITION TIMING 46
- CHANGING THE TRANSMISSION OIL 47
- EAS00081 48
- EAS00090 48
- 2 Nm (0.2 m•kg, 1.4 ft•lb) 50
- CHECKING THE EXHAUST SYSTEM 51
- CHECKING THE COOLANT LEVEL 52
- CHANGING THE COOLANT 53
- CHANGING THE COOLANT / 55
- ADJUSTING THE FRONT BRAKE 55
- ADJUSTING THE REAR BRAKE 56
- almost touch the 58
- Front brake 58
- Rear brake 58
- EAS00135 59
- EAS00143 62
- EAS00147 62
- CHECKING THE FRONT FORK 63
- CHECKING THE FRONT FORK / 64
- ADJUSTING THE FRONT FORK LEGS 64
- CHECKING THE TIRES 68
- 3 Nm (0.3 m•kg, 2.2 ft•lb) 70
- CHAPTER 4 71
- FRONT WHEEL AND BRAKE DISC 73
- REAR WHEEL AND BRAKE DISC 80
- FRONT AND REAR BRAKES 100
- FRONT FORK 114
- HANDLEBAR 127
- STEERING HEAD 133
- REAR SHOCK ABSORBER ASSEMBLY 137
- SWINGARM AND DRIVE CHAIN 142
- CHAPTER 5 152
- 60 Nm (6.0 m•kg, 43 ft•lb) 154
- 5 Nm (0.5 m•kg, 3.6 ft•lb) 154
- 12 Nm (1.2 m•kg, 8.7 ft•lb) 155
- 7 Nm (0.7 m•kg, 5.1 ft•lb) 156
- 63 Nm (6.3 m•kg, 46 ft•lb) 157
- 69 Nm (6.9 m•kg, 50 ft•lb) 159
- 20 Nm (2.0 m•kg, 14 ft•lb) 160
- 30 Nm (3.0 m•kg, 22 ft•lb) 160
- EAS00222 161
- EAS00229 161
- 28 Nm (2.8 m•kg, 20 ft•lb) 163
- 13 Nm (1.3 m•kg, 9.4 ft•lb) 163
- EAS00263 167
- EAS00267 169
- 70 Nm (7.0 m•kg, 51 ft•lb) 171
- 6 Nm (0.6 m•kg, 4.3 ft•lb) 171
- 10 Nm (1.0 m•kg, 7.2 ft•lb) 171
- EAS00276 173
- EAS00280 174
- EAS00281 174
- EAS00282 175
- EAS00284 175
- EAS00285 175
- EAS00286 175
- EAS00288 176
- EAS00298 176
- KICK STARTER AND SHIFT SHAFT 179
- CDI MAGNETO 189
- CRANKCASE AND CRANKSHAFT 193
- TRANSMISSION 199
- CHAPTER 6 207
- COOLING SYSTEM 207
- RADIATOR 209
- WATER PUMP 211
- CHAPTER 7 214
- CARBURETOR 214
- CARBURETOR AND REED VALVE 216
- CHAPTER 8 224
- ELECTRICAL SYSTEM 224
- CHECKING SWITCH CONTINUITY 226
- IGNITION SYSTEM 227
- CHAPTER 9 231
- Full-closed 233
- 1 / 2 3 / 4 Full-open 233
- Diameter of straight portion 236
- Clip position 236
- ENGINE / CHASSIS 238
- CHAPTER 10 248
- TROUBLESHOOTING 248
- INCORRECT ENGINE IDLING SPEED 250
- FAULTY GEAR SHIFTING 250
- FAULTY CLUTCH 251
- OVERHEATING 251
- POOR BRAKING PERFORMANCE 252
- FAULTY FRONT FORK LEGS 252
- UNSTABLE HANDLING 252
- YAMAHA MOTOR CO., LTD 253
- YZ85W1 / YZ85(W) / YZ85LW(W) 254
- 2007 WIRING DIAGRAM 254
- YZ85W1/YZ85(W)/YZ85LW(W) 255
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