Yamaha YZF-R1P Service Manual

Contents

9 - 2TRBLSHTGSTARTING FAILURES/INCORRECT ENGINE IDLING SPEEDELECTRICAL SYSTEMSBattery• Discharged battery• Faulty batteryFuse(s)• Blown, damaged or incorrect fuse• Improperly installed fuseSpark plug(s)• Incorrect spark plug gap• Incorrect spark plug heat range• Fouled spark plug• Worn or damaged electrode• Worn or damaged insulatorIgnition coil(s)• Cracked or broken ignition coil body• Broken or shorted primary or secondarycoils• Faulty spark plug leadIgnition system• Faulty ECU• Faulty crankshaft position sensor• Broken generator rotor woodruff keySwitches and wiring• Faulty main switch• Faulty engine stop switch• Broken or shorted wiring• Faulty neutral switch• Faulty start switch• Faulty sidestand switch• Faulty clutch switch• Improperly grounded circuit• Loose connectionsStarting system• Faulty starter motor• Faulty starter relay• Faulty starting circuit cut-off relay• Faulty starter clutchEAS00846INCORRECT ENGINE IDLING SPEEDENGINECylinder(s) and cylinder head(s)• Incorrect valve clearance• Damaged valve train componentsAir filter• Clogged air filter elementFUEL SYSTEMThrottle body(-ies)• Damaged or loose throttle body joint• Improperly synchronized throttle bodies• Improperly adjusted engine idling speed(throttle stop screw)• Improper throttle cable free play• Flooded throttle body• Faulty air induction systemELECTRICAL SYSTEMSBattery• Discharged battery• Faulty batterySpark plug(s)• Incorrect spark plug gap• Incorrect spark plug heat range• Fouled spark plug• Worn or damaged electrode• Worn or damaged insulatorIgnition coil(s)• Broken or shorted primary or secondarycoils• Cracked or broken ignition coilIgnition system• Faulty ECU• Faulty crankshaft position sensor• Broken generator rotor woodruff key123456789