2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 141Get this manual

2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 141

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VALVES AND VALVE SPRINGS
3 Measure: Valve seat width Out of specificationReplace the cylinder headValve seat width Valve seat width (intake) 0.901.10 mm (0.03540.0433 in) Valve seat width (exhau