TROUBLESHOOTING
9-1
EAS28451
TROUBLESHOOTING
EAS28460
GENERAL INFORMATION
TIP
The following guide for troubleshooting does
not cover all the possible causes of trouble. It
should be helpful, however, as a guide to basic
troubleshooting. Refer to the relative proce-
dure in this manual for checks, adjustments,
and replacement of parts.
EAS28470
STARTING FAILURES
Engine
1. Cylinder(s) and cylinder head
• Loose spark plug
• Loose cylinder head or cylinder
• Damaged cylinder head gasket
• Damaged cylinder gasket
• Worn or damaged cylinder
• Incorrect valve clearance
• Improperly sealed valve
• Incorrect valve-to-valve-seat contact
• Incorrect valve timing
• Faulty valve spring
• Seized valve
2. Piston(s) and piston ring(s)
• Improperly installed piston ring
• Damaged, worn or fatigued piston ring
• Seized piston ring
• Seized or damaged piston
3. Air filter
• Improperly installed air filter
• Clogged air filter element
4. Crankcase and crankshaft
• Improperly assembled crankcase
• Seized crankshaft
Fuel system
1. Fuel tank
• Empty fuel tank
• Clogged fuel filter
• Clogged fuel strainer
• Clogged fuel tank overflow hose
• Deteriorated or contaminated fuel
2. Fuel pump
• Faulty fuel pump
• Faulty fuel pump relay
3. Throttle body(-ies)
• Deteriorated or contaminated fuel
• Sucked-in air
Electrical system
1. Battery
• Discharged battery
• Faulty battery
2. Fuse(s)
• Blown, damaged or incorrect fuse
• Improperly installed fuse
3. Spark plug(s)
• Incorrect spark plug gap
• Incorrect spark plug heat range
• Fouled spark plug
• Worn or damaged electrode
• Worn or damaged insulator
4. Ignition coil(s)
• Cracked or broken ignition coil body
• Broken or shorted primary or secondary
coils
5. Ignition system
• Faulty ECU
• Faulty crankshaft position sensor
• Faulty cylinder identification sensor
6. Switches and wiring
• Faulty main switch
• Faulty engine stop switch
• Broken or shorted wiring
• Faulty gear position sensor
• Faulty start switch
• Faulty sidestand switch
• Faulty clutch switch
• Improperly grounded circuit
• Loose connections
7. Starting system
• Faulty starter motor
• Faulty starter relay
• Faulty starting circuit cut-off relay
• Faulty starter clutch
EAS28490
INCORRECT ENGINE IDLING SPEED
Engine
1. Cylinder(s) and cylinder head
• Incorrect valve clearance
• Damaged valve train components
2. Air filter
• Clogged air filter element
Fuel system
1. Throttle body(-ies)
• Damaged or loose throttle body joint
• Improperly synchronized throttle bodies
• Improper throttle cable free play
• Flooded throttle body
• Faulty air induction system
Summary of Contents for YZF-R1 2012
Page 1: ...SERVICE MANUAL YZF R1 B 2012 1KB 28197 E0 ...
Page 6: ......
Page 8: ......
Page 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29 EAS20410 LUBRICATION DIAGRAMS ...
Page 72: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 31 ...
Page 74: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 33 ...
Page 76: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 35 ...
Page 77: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 36 1 Main axle 2 Oil water pump assembly ...
Page 78: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 37 ...
Page 79: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 38 1 Main axle 2 Oil delivery pipe 2 3 Drive axle ...
Page 80: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 39 ...
Page 82: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 41 ...
Page 84: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 43 ...
Page 85: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 44 1 Balancer shaft 2 Crankshaft ...
Page 86: ...COOLING SYSTEM DIAGRAMS 2 45 EAS20420 COOLING SYSTEM DIAGRAMS ...
Page 88: ...COOLING SYSTEM DIAGRAMS 2 47 ...
Page 89: ...COOLING SYSTEM DIAGRAMS 2 48 1 Radiator cap 2 Radiator 3 Radiator fan 4 Oil cooler ...
Page 90: ...CABLE ROUTING 2 49 EAS20430 CABLE ROUTING ...
Page 92: ...CABLE ROUTING 2 51 ...
Page 94: ...CABLE ROUTING 2 53 ...
Page 96: ...CABLE ROUTING 2 55 ...
Page 98: ...CABLE ROUTING 2 57 ...
Page 100: ...CABLE ROUTING 2 59 ...
Page 102: ...CABLE ROUTING 2 61 ...
Page 104: ...CABLE ROUTING 2 63 ...
Page 106: ...CABLE ROUTING 2 65 ...
Page 108: ...CABLE ROUTING 2 67 ...
Page 110: ...CABLE ROUTING 2 69 ...
Page 112: ...CABLE ROUTING 2 71 ...
Page 114: ...CABLE ROUTING 2 73 ...
Page 116: ...CABLE ROUTING 2 75 ...
Page 119: ......
Page 156: ...PERIODIC MAINTENANCE 3 37 ...
Page 248: ...CHAIN DRIVE 4 89 ...
Page 263: ...ENGINE REMOVAL 5 12 Installed depth of gasket c 3 5 mm 0 14 in ...
Page 295: ...PICKUP ROTOR 5 44 Yamaha bond No 1215 Three Bond No 1215 90890 85505 ...
Page 350: ...TRANSMISSION 5 99 ...
Page 366: ...WATER PUMP 6 15 ...
Page 388: ...AIR INDUCTION SYSTEM 7 21 EAS27040 AIR INDUCTION SYSTEM ...
Page 394: ...AIR INDUCTION SYSTEM 7 27 ...
Page 397: ......
Page 398: ...IGNITION SYSTEM 8 1 EAS27090 IGNITION SYSTEM EAS27110 CIRCUIT DIAGRAM ...
Page 404: ...ELECTRIC STARTING SYSTEM 8 7 EAS27160 ELECTRIC STARTING SYSTEM EAS27170 CIRCUIT DIAGRAM ...
Page 410: ...CHARGING SYSTEM 8 13 EAS27200 CHARGING SYSTEM EAS27210 CIRCUIT DIAGRAM ...
Page 413: ...CHARGING SYSTEM 8 16 ...
Page 414: ...LIGHTING SYSTEM 8 17 EAS27240 LIGHTING SYSTEM EAS27250 CIRCUIT DIAGRAM ...
Page 418: ...SIGNALING SYSTEM 8 21 EAS27270 SIGNALING SYSTEM EAS27280 CIRCUIT DIAGRAM ...
Page 425: ...SIGNALING SYSTEM 8 28 ...
Page 426: ...COOLING SYSTEM 8 29 EAS27300 COOLING SYSTEM EAS27310 CIRCUIT DIAGRAM ...
Page 429: ...COOLING SYSTEM 8 32 ...
Page 430: ...FUEL INJECTION SYSTEM 8 33 EAS27330 FUEL INJECTION SYSTEM EAS27340 CIRCUIT DIAGRAM ...
Page 503: ...FUEL INJECTION SYSTEM 8 106 ...
Page 504: ...FUEL PUMP SYSTEM 8 107 EAS27550 FUEL PUMP SYSTEM EAS27560 CIRCUIT DIAGRAM ...
Page 508: ...IMMOBILIZER SYSTEM 8 111 EAS27640 IMMOBILIZER SYSTEM EAS27650 CIRCUIT DIAGRAM ...
Page 517: ...IMMOBILIZER SYSTEM 8 120 ...
Page 518: ...ELECTRICAL COMPONENTS 8 121 EAS27972 ELECTRICAL COMPONENTS ...
Page 520: ...ELECTRICAL COMPONENTS 8 123 ...
Page 522: ...ELECTRICAL COMPONENTS 8 125 EAS27980 CHECKING THE SWITCHES ...
Page 546: ...ELECTRICAL COMPONENTS 8 149 ...
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