Yamaha Outboard Motors Factory Service Manual F6 and F8, Page 276Get this manual

Yamaha Outboard Motors Factory Service Manual F6 and F8, Page 276

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CAMSHAFT AND VALVES CHECKING THE CYLINDER HEAD
REPLACING THE VALVE GUIDE
Replace: Valve guide Replacing steps:

Heat the cylinder head in an oven to 200C (392F) to ease valve g