2001 Yamaha YFM660 Raptor Factory Service Manual, Page 288Get this manual

2001 Yamaha YFM660 Raptor Factory Service Manual, Page 288

IGNITION SYSTEM Spark plug gap: 0.80.9 mm (0.0310.035 in) CORRECT For USA and CDN 4.Ignition spark gap

INCORRECT

Repair or replace the spark plug

Disconnect the spark plug cap from the spark plugConnect the dynamic spark tester as shownTurn the main switch to "ON"Check the ignition spark gapCrank the engine by pushing the starter switch, and increase the spark gap until misfiring occursMinimum spark gap: 6.0 mm (0.24 in)

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