2008 Yamaha Snowmobiles FX NYTRO Factory Service Manual, Page 220Get this manual

2008 Yamaha Snowmobiles FX NYTRO Factory Service Manual, Page 220

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VALVES AND VALVE SPRINGS 10 Lap: Valve face Valve seat
CAUTION:
Do not let the lapping compound enter the gap between the valve stem and the valve guide Apply molybdenum disulfide oil onto