2008 Yamaha Rhino YXR70FX Factory Service Manual, Page 181Get this manual

2008 Yamaha Rhino YXR70FX Factory Service Manual, Page 181

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VALVES AND VALVE SPRINGS
aApply coarse lapping compound to the valve faceNOTICE
Do not let the compound enter the gap between the valve stem and the valve guidebApply molybdenum disulfide