Yamaha YZFR6 (1999-2002) [3/7] Trbl shtg

STARTING PROBLEMS TRBL SHTG EB900000 TROUBLESHOOTING NOTE ______________________________________ _ _________________ 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 procedure is this manual for checks adjustments and replacement of parts STARTING PROBLEMS ENGINE Cylinders and cylinder head s Loose spark plug Loose cylinder head Damaged cylinder head gasket Worn or damaged cylinder Incorrect valve clearance Incorrectly sealed valve Incorrect valve to valve seat contact Incorrect valve timing Faulty valve spring Seized valve Pistons and piston rings Incorrectly installed piston ring Damaged worn or fatigued piston ring Seized piston ring Seized or damaged piston Air filter Incorrectly installed air filter Clogged air filter element Crankcase and crankshaft Incorrectly assembled crankcase Seized crankshaft FUEL SYSTEM Fuel tank Empty fuel tank Clogged fuel filter Clogged fuel tank breather hose Deteriorated or contaminated fuel Fuel pump Faulty fuel pump Faulty fuel pump relay Fuel cock Clogged or damaged fuel hose Carburetors Deteriorated or contaminated fuel Clogged pilot jet Clogged pilot air passage Sucked in air Damaged float Worn needle valve Incorrectly installed needle valve seat Incorrect fuel level Incorrectly installed pilot jet Clogged starter jet Faulty starter plunger Incorrectly adjusted starter cable ELECTRICAL SYSTEMS Battery Faulty battery Discharged battery Fuses Blown damaged or incorrect fuse Incorrectly installed fuse Spark plugs Incorrect spark plug gap Incorrect spark plug heat range Fouled spark plug Worn or damaged electrode Worn or damaged insulator Faulty spark plug cap Ignition coils Damaged ignition coil Broken or shorted primary or secondary Ignition system Faulty GDI unit Faulty pickup coil Switches 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 Incorrectly grounded circuit Loose connections Starting system Faulty starter motor Faulty starter relay Faulty starting circuit cutoff relay Faulty starter clutch 9 1