2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 139Get this manual

2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 139

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VALVES AND VALVE SPRINGS

2 Replace: Valve guide NOTE: To ease valve guide removal and installation, and to maintain the correct fit, heat the cylinder head to 100C (212F) in an ovenaRemov