TROUBLESHOOTING
9-2
Electrical system
1. Battery
• Discharged battery
• Faulty battery
2. Spark plug(s)
• Incorrect spark plug gap
• Incorrect spark plug heat range
• Fouled spark plug
• Worn or damaged electrode
• Worn or damaged insulator
3. Ignition coil(s)
• Broken or shorted primary or secondary
coils
• Cracked or broken ignition coil
4. Ignition system
• Faulty ECU
• Crankshaft position sensor
EAS28520
POOR MEDIUM-AND-HIGH-SPEED PER-
FORMANCE
Refer to "STARTING FAILURES" on page 9-1.
Engine
1. Air filter
• Clogged air filter element
• Faulty YCC-T and YCC-I
Fuel system
1. Fuel pump
• Faulty fuel pump
EAS28530
FAULTY GEAR SHIFTING
Shifting is difficult
Refer to “Clutch drags”.
EAS28540
SHIFT PEDAL DOES NOT MOVE
Shift shaft
• Improperly adjusted shift rod
• Bent shift shaft
Shift drum and shift forks
• Foreign object in a shift drum groove
• Seized shift fork
• Bent shift fork guide bar
Transmission
• Seized transmission gear
• Foreign object between transmission gears
• Improperly assembled transmission
EAS28550
JUMPS OUT OF GEAR
Shift shaft
• Incorrect shift pedal position
• Improperly returned stopper lever
Shift forks
• Worn shift fork
Shift drum
• Incorrect axial play
• Worn shift drum groove
Transmission
• Worn gear dog
EAS28560
FAULTY CLUTCH
Clutch slips
1. Clutch
• Improperly assembled clutch
• Improperly adjusted clutch cable
• Loose or fatigued clutch spring
• Worn friction plate
• Worn clutch plate
2. Engine oil
• Incorrect oil level
• Incorrect oil viscosity (low)
• Deteriorated oil
Clutch drags
1. Clutch
• Unevenly tensioned clutch spring
• Warped pressure plate
• Bent clutch plate
• Swollen friction plate
• Bent clutch pull rod
• Damaged clutch boss
• Burnt primary driven gear bushing
• Match marks not aligned
2. Engine oil
• Incorrect oil level
• Incorrect oil viscosity (high)
• Deteriorated oil
EAS28600
OVERHEATING
Engine
1. Clogged coolant passages
• Cylinder head(s) and piston(s)
• Heavy carbon buildup
2. Engine oil
• Incorrect oil level
Summary of Contents for YZFR1W 2007
Page 1: ...2007 MOTORCYCLE SERVICE MANUAL Model YZFR1W 4C8281972000 4C8281972000...
Page 50: ...LUBRICATION POINTS AND LUBRICANT TYPES 2 22...
Page 53: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 25 EAS20410 LUBRICATION DIAGRAMS...
Page 55: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 27...
Page 57: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29...
Page 59: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 31 A A A A...
Page 60: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 32 1 Main axle 2 Oil delivery pipe 3 Drive axle...
Page 61: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 33...
Page 62: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 34 1 Cylinder head 2 Crankshaft...
Page 63: ...COOLING SYSTEM DIAGRAMS 2 35 EAS20420 COOLING SYSTEM DIAGRAMS...
Page 64: ...COOLING SYSTEM DIAGRAMS 2 36 1 Water pump 2 Radiator 3 Radiator fan...
Page 65: ...COOLING SYSTEM DIAGRAMS 2 37...
Page 66: ...COOLING SYSTEM DIAGRAMS 2 38 1 Radiator cap 2 Radiator 3 Oil cooler 4 Thermostat...
Page 67: ...CABLE ROUTING 2 39 EAS20430 CABLE ROUTING...
Page 69: ...CABLE ROUTING 2 41...
Page 71: ...CABLE ROUTING 2 43...
Page 73: ...CABLE ROUTING 2 45...
Page 75: ...CABLE ROUTING 2 47...
Page 77: ...CABLE ROUTING 2 49...
Page 79: ...CABLE ROUTING 2 51...
Page 81: ...CABLE ROUTING 2 53...
Page 171: ...HANDLEBARS 4 49...
Page 197: ...CHAIN DRIVE 4 75...
Page 200: ...CHECKING THE TRANSMISSION 5 90 INSTALLING THE TRANSMISSION 5 91...
Page 293: ...TRANSMISSION 5 93...
Page 314: ...THROTTLE BODIES 7 8...
Page 317: ...AIR INDUCTION SYSTEM 7 11...
Page 320: ...IGNITION SYSTEM 8 1 EAS27090 IGNITION SYSTEM EAS27110 CIRCUIT DIAGRAM...
Page 324: ...ELECTRIC STARTING SYSTEM 8 5 EAS27160 ELECTRIC STARTING SYSTEM EAS27170 CIRCUIT DIAGRAM...
Page 330: ...CHARGING SYSTEM 8 11 EAS27200 CHARGING SYSTEM EAS27210 CIRCUIT DIAGRAM...
Page 333: ...CHARGING SYSTEM 8 14...
Page 334: ...LIGHTING SYSTEM 8 15 EAS27240 LIGHTING SYSTEM EAS27250 CIRCUIT DIAGRAM...
Page 338: ...SIGNALING SYSTEM 8 19 EAS27270 SIGNALING SYSTEM EAS27280 CIRCUIT DIAGRAM...
Page 344: ...COOLING SYSTEM 8 25 EAS27300 COOLING SYSTEM EAS27310 CIRCUIT DIAGRAM...
Page 347: ...COOLING SYSTEM 8 28...
Page 348: ...FUEL INJECTION SYSTEM 8 29 EAS27330 FUEL INJECTION SYSTEM EAS27340 CIRCUIT DIAGRAM...
Page 384: ...FUEL PUMP SYSTEM 8 65 EAS27550 FUEL PUMP SYSTEM EAS27560 CIRCUIT DIAGRAM...
Page 388: ...IMMOBILIZER SYSTEM 8 69 EAS27640 IMMOBILIZER SYSTEM EAS27650 CIRCUIT DIAGRAM...
Page 396: ...ELECTRICAL COMPONENTS 8 77 EAS27970 ELECTRICAL COMPONENTS...
Page 398: ...ELECTRICAL COMPONENTS 8 79...
Page 400: ...ELECTRICAL COMPONENTS 8 81 EAS27980 CHECKING THE SWITCHES...
Page 420: ...ELECTRICAL COMPONENTS 8 101...
Page 429: ...Yamaha Motor Canada Ltd 480 Gordon Baker Road Toronto ON M2H 3B4...