1994-2001 Yamaha Venture/V-Max 500 Series Snowmobile Service Manual, Page 44Get this manual

1994-2001 Yamaha Venture/V-Max 500 Series Snowmobile Service Manual, Page 44

CARBURETOR TUNING IANOSJP Main jet selection chart Spark plug color Light tan or grayDry black or fluffy depositsWhite or
too richMixture is too leanReplace main jet with the next smaller sizeReplace main jet with the next larger sizeReplace the
piston and spark plugTune the carburetor again, starting with lowspeed tuningCheck the piston for holes or seizureCheck the
cooling system, gasoline octane rating and ignition timingAfter replacing the spark plug with colder type, tune the carburetor