INSPECTION
CYLINDER
HEAD
CYLINDER HEADNALVE
Be careful not
/0
Remove
the
carbon deposits from the combustion
1-~~=:::::::=::;:=
;
;J
I~'I
~l
damage
the
valve
chamber [1) . I
seal and gasket Check the spark plug hole and valve areas for cracks.
surfaces
.
Check t
he
cylinder head for warpage with a straight
~iillIII":
~::
~~=
::
"::~~
::-
"'"
edge and feeler gauge across the stud holes.
SERVICE LIMIT: 0.10 mm (0.004 In)
VALVE
SPRING
Check the valve springs for fatigue or damage .
Measure the valve spring free length.
SERVICE LIMITS:
Inner
: 42 .08
mm
(1
.657
in
)
Outer
: 42.76 rnm (1.68 3
in
)
VALVE
I
VALVE
GUIDE
Check that the valve moves smoothly in the guide.
Check the valve for bending. burning
or
abnormal wear.
Measure each valve stem
0 .0 . and record it.
SERVICE LIMITS:
IN
: 5.95
mm
(0.234 in)
EX: 5.93
mm
(0
.2
33 in)
10-11
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