ENGINE 3-23
VALVE STEM WEAR
If the valve stem is worn down to the limit, as measured with a
micrometer, replace the valve.
If the stem is within the limit, then replace the guide.
After replacing valve or guide, be sure to recheck the deflection.
Valve stem O.D.:
Standard (IN) : 4.975 – 4.990 mm (0.2165 – 0.2170 in)
(EX) : 4.955 – 4.970 mm (0.1950 – 0.1956 in)
\ 09900-20205: Micrometer (0 – 25 mm)
NOTE:
If valve guides have to be removed for replacement after
inspecting related parts, carry out the steps shown in valve
guide servicing.
VALVE GUIDE SERVICING
• Using the valve guide remover, drive the valve guide out
toward the intake or exhaust camshaft side.
\ 09916-44310: Valve guide remover/installer
NOTE:
* Discard the removed valve guide subassemblies.
* Only oversized valve guides are available as replacement
parts. (Part No. 11115-30D70)
• Re-finish the valve guide holes in cylinder head with the
reamer and handle.
\ 09916-34580: Valve guide reamer (10.8 mm)
09916-34542: Reamer handle
When refinishing or removing the reamer from the
valve guide hole, always turn it clockwise.
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