1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 108Get this manual

1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 108

INSPECTION AND REPAIR

VALVE SEAT 1Eliminate:Carbon deposit (from valve face and valve seat) 2Inspect: -Valve seat PittingWear Reface the valve seat
3Measure: -Valve seat width Out of speclfication-t Reface valve seatValve seat width: Intake: 0.9-1.1 mm (0.035-0.043 in) Exhaust 0.9-1.1 mm (0.035-0.043 in)
Measurement steps:

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