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ENG
INSPECTION AND REPAIR
●Calculate the clearance by subtracting the
rocker-arm-shaft outside diameter from
the rocker-arm inside diameter.
Out of specification → Replace as a set.
Arm-to-shaft clearance =
Rocker arm inside diameter a –
Rocker arm shaft outside diameter b
Arm-to-shaft clearance:
0.009 ~ 0.037 mm
(0.0004 ~ 0.0013 in)
<Limit>:
0.037 mm (0.0015 in)
2.Lubricate:
● Rocker arms 1
● Rocker arm shafts 2
● Cam shaft 3 (cam lobe/journal)
3.Install:
● Rocker arms
● Rocker arms shafts
NOTE:
● Thread hole of the rocker arm shaft
should be placed outside.
● Install the shorter rocker arm shaft 1
(with O-ring 2) on the exhaust side and
the longer shaft 3 (with cutaway 4) on
the intake side.
● Align the slit 4 on the rocker arm shaft
(intake) with the cylinder head bolt hole 5
and install the rocker arm shaft.
4.Install:
● Camshaft 1
(to cylinder head)
NOTE:
The pin 2 on the end of the camshaft must
align with the timing mark 3 on the cylin-
der head.
Rocker arms/rocker arm shafts:
Molybdenum disulfide oil
Cam shaft:
SAE 10W30 motor oil
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