1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 112Get this manual

1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 112

INSPECTION AND REPAIR

3Eliminate: -Carbon deposit (from valve face) 4Inspect: -Valve face PittingWearGrind the face-Valve stem end Mushroom shape or diameter larger than rest of stem-s Replace

5Measure:Margin thickness Out of specification Replace

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