2009 Yamaha Grizzly Service Manual, Page 35Get this manual

2009 Yamaha Grizzly Service Manual, Page 35

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ENGINE SPECIFICATIONS Valve head diameter (exhaust) 27.9028.10 mm (1.09841.1063 in) (YFM5FGYYFM5FGPY) 31.9032.10 mm (1.25591.2638 in) (YFM7FGYYFM7FGPY)
Valve stem diameter (intake) Limit Valve s