Yamaha F100B F100C Outboards Factory Service Manual, Page 120Get this manual

Yamaha F100B F100C Outboards Factory Service Manual, Page 120

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Power unit

Valve guide inside diameter limit a: 6.016.02 mm (0.23670.2370 in) 2 Calculate the valve stem-to-valve guide clearance as followsReplace the valve guide if out of specification