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HEAD/VALVES
(1)
COMBUSTION CHAMBERS
CYLINDER
HEAD
INSPECTION
CYLINDER
HEAD
Remove
carbon
deposits
from
the
combustion
chambers
Check
the
spar* plug hole
and
valve areas
for
cracks.
Avoid
damaging
the gasket surface
Gasket
will
come
off
easier
if
soaked
in
solvent.
Check
the
cylinder
head
for
warpage
with a
straight
edge
and
feeler
gauge.
SERVICE
LIMIT: 0.10
mm
(0.004
in)
VALVE SPRING
Measure
the
free
length
of
the inner
end
outer valve
springs.
SERVICE
LIMITS:
Inner
29.0
mm
(1.14
in)
Outer
37.0
mm
(1.46
in)
Replace
the
springs
if
they
are shorter
than
the service
lim-
its.
VALVE/VALVE GUIDE
Inspect
each
valve
for
bending, burning
or
abnormal stem
wear
Check
valve
movement
In
the guide,
measure and
record
each
valve
stem
O.D.
SERVICE
LIMITS:
IN:
5.42
mm
10.213
in)
EX; 5,40
mm
(0-213
In)
9
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