1994-2001 Yamaha Venture/V-Max 500 Series Snowmobile Service Manual, Page 361Get this manual

1994-2001 Yamaha Venture/V-Max 500 Series Snowmobile Service Manual, Page 361

SPARK PLUGS 1Remove: Spark plugs 2Inspect: Electrodes CD Damagewear Replace the spark plug Insulator color 3Measure: Spark
the spark plugs with spark plug cleanerStandard spark plug: BR9ES (NGK) Before installing spark plug, clean the gasket surface