1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 107Get this manual

1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 107

INSPECTION AND REPAIR
INSPECTION AND REPAIR
CYLINDER HEAD 1Eliminate:Carbon deposit (from combustion chamber) Use rounded scraper CDNOTE:

Do not use sharp instrument and avoid damaging or scratching: -Spark plug threads -Valve seat 2Inspect:Cylinder head Scratches Damage

Replace
3Measure: -Warpage Out of specification

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