1997 Yamaha YFM600FWAK ATV Service Manual, Page 312Get this manual
THRTBilL IS GI-STARTING FAILUREHARD STARTING
TROUBLESHOOTING
NOTE: The following troubleshooting does not cover all the possible causes of troubleIt should be helpful, however, as guide to troubleshootingRefer to the relative procedure in this manual for inspection, adjustment and replacement of parts
STARTING FAILUREHARD STARTING
FUEL SYSTEM Fuel tank Empty Clogged fuel filter Clogged fuel strainer Clogged fuel breather hose Deteriorated or contaminated fuel Fuel cock Clogged fuel hose Carburetor Deteriorated or contaminated fuel Clogged pilot jet Clogged pilot air passage Sucked-in air Deformed float Worn needle valve Improperly sealed valve seat Improperly adjusted fuel level Improperly set pilot jet Clogged starter jet Starter plunger malfunction Air filter Clogged air filter element