1997 Yamaha YFM600FWAK ATV Service Manual, Page 133Get this manual

1997 Yamaha YFM600FWAK ATV Service Manual, Page 133

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VALVES AND VALVE SPRINGS
12.Measure: Spring tilt Out of specification

Replace
Spring tilt limit: Inner: 2.51.7 mm (0.067 in) Outer: 2.5 1.9 mm (0.075 in)