3. TROUBLESHOOTING
48
GUIDE
HEIGHT
1mm
GUIDE CLIP
VALVE
GUIDE
DRIVER
③
Valve Guide
Inspection
：
a) Inspect the valve guide for smooth, scratch and
damaged in the inner surface, and matching between
the valve guide and cylinder cover for fastness.
b) Using the valve guide reamer, ream the valve guides to
remove any carbon deposits before measuring.
If the valve guide inside diameter is lower than standard or
out of the service limit, replace the guide.
STANDARD
SERVICE LIMIT
5.50mm
5.572mm
Replacement:
a)
Chill the replacement valve guides
in the freezer
b)
section of a refrigerator for about
an hour.
c)
Drive the valve guide out of the
combustion
d)
chamber side using valve guide
driver.
VALVE
GUIDE
REAMER
