CYLINDER
HEADNALVES
8·14
INSPECTION
CYLINDER
HEAD
Check the sparl< plug hote 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)
ROCKER ARM/SHAFT
Disassemble the cylinder head (page 8-12).
Check the rocker arm shafts and rocker arms for wear
or damage.
Turn the rocker
affil
rollers [1]
wi
th your finger.
The rollers should tum smoothly and quielly.
Measure the 1.0.
of
each rocker arm.
SERVICE LIMIT: INfEX : 10.10
mm
(0
.3
98 in)
Measure the
0.0
. of each rocker arm shaft.
SERVICE LIMIT: INfEX: 9.
91
mm (0.390 in)
Calculate Ihe rocker arm-to-shaft clearance.
SERVICE LIMIT:
IN
/EX: 0.044
mm
(0.0017 in)
VALVE
SPRING
Disassemble the cylinder head (page 8-12).
Measu
re
the free length of the valve springs.
SERVICE LIMIT:
IN: 29.82
mm
(1.174 In)
EX: INNER: 30.35
mm
(1
.
195In)
OUTER: 31.08
mm
(1.224 in)
Replace the springs
if
they are shorter than the service
limit.
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41
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