CHECKING GUIDE CLEARANCE
1.
Remove carbon from the valve guide.
2.
After making sure that the valve stem
is
straight, insert the valve into the valve guide.
3.
Measure the stem guide clearance with a dial gauge.
4.
If the measurement exceeds the allowable limit, replace the stem guide
and
the
valve.
IMPORTANT:
When changing the valve guide, be sure
to
ream as the figure indicates after
inserting the
valve guide. See engine specifications.
Finishing size
of
inlet
valve guide
Finishing size
of
exhaust
valve guide
CHECKING
VALVE
SPRING
FREE
LENGTH
1.
Measure the spring with a set of vernier calipers.
2.
If the measurement exceeds the allowable limit, replace. See engine specifications.
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