2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 136Get this manual

2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 136

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VALVES AND VALVE SPRINGS
JobParts to remove Removing the valves and valve springs Cylinder head Rocker arm Camshaft Valve cotter Valve spring retainer Outer valve spring Inner valve spring Intak