Yamaha TZR50 '03 Service Manual Page 133
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- Table of contents
- TROUBLESHOOTING
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COOL
THERMOSTAT AND RADIATOR
5-9
INSPECTION
1. Inspect:
• The radiator core
Obstruction
Eliminate this with com-
pressed air, blowing from the rear of the
radiator.
Squashed fins
repair / replace
2. Inspect:
• The inlet hose
Cracks / damage
Replace
• Output sleeve
Cracks / Damage
Replace
3. Measure:
• The opening pressure of the radiator cap
Measurement steps:
• Connect the tester of the cooling sys-
tem and the adapter to the radiator cap
.
• Apply the specified pressure for ten
seconds and make sure that this does not
drop.
4. Inspect:
• The thermostat
See the section on “DISMANTLING THE
ENGINE” in CHAPTER 4 CYLINDER
HEAD AND CYLINDER
The valve does not open
replace
Radiator cap opening pressure:
0.75 ~ 1.05 kg/cm
2
Cooling system tester:
90890 - 01325
Adapter:
90890 - 01352
- SERVICE MANUAL 1
- TZR50’03 / X-POWER’03 2
- HOW TO USE THIS MANUAL 3
- MANUAL FORMAT 4
- EXPLODED VIEWS 4
- SYMBOLS ILLUSTRATED 5
- CHAPTER 1 8
- GENERAL INFORMATION 8
- IMPORTANT INFORMATION 10
- SPECIAL TOOLS 12
- CHAPTER 2 19
- GENERAL SPECIFICATIONS 19
- SPECIFICATIONS 20
- MAINTENANCE SPECIFICATIONS 23
- TIGHTENING TORQUES 28
- CONVERSION TABLES 32
- GENERAL CHARACTERISTICS 32
- OF TIGHTENING TORQUES 32
- CABLE ROUTING 35
- CHAPTER 3 40
- LUBRICATION 41
- INTRODUCTION 41
- SIDE COVERS 42
- ADJUSTING THE IDLING SPEED 43
- BLEEDING THE AUTOLUBE PUMP 46
- INSPECTING THE SPARK PLUG 47
- “OIL” level indicator 49
- ADJUSTING THE CLUTCH 51
- ADJUSTING THE CLUTCH / 52
- CLEANING THE AIR FILTER 52
- BURETTOR GASKET 54
- INSPECTING THE FUEL HOSES 55
- THE LEVEL OF COOLANT 56
- CHANGING THE COOLANT 57
- BLEEDING THE AIR 62
- INSPECTING THE BRAKE HOSES 64
- ADJUSTING THE STEERING 67
- CHANGING THE FORK OIL 69
- INSPECTING THE TYRES 71
- INSPECTING WHEELS / 72
- INSPECTING CABLES 72
- INSPECTING THE BATTERY 75
- INSPECTING THE FUSES 76
- CHANGING A HEADLIGHT BULB 77
- CHAPTER 4 79
- REMOVING THE ENGINE 80
- REMOVING THE ENGINE / 86
- DISMANTLING THE ENGINE 86
- DISMANTLING THE ENGINE / 93
- C: Internal cylinder diameter 96
- P: External piston diameter 96
- INSPECTION AND REPAIR 100
- CRANKSHAFT 102
- SHIFT AND SELECTOR 104
- SELECTOR 105
- STARTER MOTOR 108
- PISTON PIN AND PISTON 116
- CYLINDER HEAD AND CYLINDER 117
- CHAPTER 5 124
- COOLANT SYSTEM 124
- COOLING SYSTEM 125
- WATER PUMP 128
- THERMOSTAT AND RADIATOR 132
- CHAPTER 6 137
- CARBURATION 137
- CARBURETOR 139
- CARBURETOR / REED VALVE 141
- REED VALVE 141
- CHAPTER 7 146
- FRONT WHEEL 147
- RUEDA DELANTERA 150
- REAR WHEEL 152
- FRONT BRAKE 156
- FRONT FORK 166
- STEERING HEAD AND HANDLEBARS 175
- STEERING HEAD 176
- STEERING HEAD AND HANDLEBAR 178
- 6.0 m • kg 186
- 4.0 m • kg 186
- E: USE A NEW ONE 192
- 1/4 tooth 194
- Correct 194
- Roller 194
- Rear wheel sprocket 194
- Rotation direction 196
- CHAPTER 8 199
- ELECTRICAL SYSTEM 199
- ELECTRICAL DIAGRAM 201
- ELECTRICAL COMPONENTS (1) 203
- BATTERY: 204
- CAPACITY: 204
- 12 V 3AH 204
- NO MAINTENANCE 204
- CIRCUIT DIAGRAM 205
- IGNITION AND STARTING SYSTEM 206
- ELECTRIC START SYSTEM 207
- CHARGING SYSTEM 211
- TROUBLESHOOTING 213
- LIGHTING SYSTEM 217
- SIGNALING SYSTEM 227
- ELECTRICAL DIAGRAM TZR50 251
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