Avoid damaging the
Remove the carbon deposits form
the
combustion
cylinder mating
chamber
[1]
and clean off the cylinder head gasket
surface and valve
surface.
seat surfaces.
INSPECTION
CYLINDER HEAD
Check the spark plug hole and valve areas for cracks.
Check the cylinder head for warpage
with
a straight
edge
and
a feeler gauge.
SERVICE LIMIT: 0.05 mm (0.002 in)
VALVE SPRING
Measure the free length of the valve springs.
STANDARD: IN/EX: 36.94 mm (1.454 in)
VALVE/VALVE GUIDE
Check that the valve moves smoothly
in
the
guide.
Check each valve for bends, burns, scratches, or
abnormal wear.
Measure each valve stem O.D. and record
it.
SERVICE LIMITS: IN/EX: 4.90 mm (0.193 in)
CYLINDER HEADNALVES
1
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