2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 137Get this manual

2007-2009 Yamaha F15/F20 Outboard Service Manual, Page 137

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Power unit
Do not reuse the cylinder head gasket, always replace it with new oneNOTE: Apply engine oil to the cylinder head bolts before installation Tighten the bolts to the specified torques i