2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 132Get this manual
Power unit
Valve stem runout: Intake: 0.01 mm (0.0004 in) Exhaust: 0.01 mm (0.0004 in)
Checking the valve guides
NOTE: Before checking the valve guide make sure that the valve stem diameter is within specification1Measure the valve guide inside diameter a
S69J5790
Valve guide remover: YB-06801 2Install the new valve guide by striking the special service tool from the camshaft side until the valve guide installer contacts the cylinder head
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