CHECKING OIL CLEARANCE BETWEEN ROCKER
ARM
SHAFT AND BUSHING
1.
Measure the rocker arm
1.0.
2.
Measure the rocker
arm
0.0.
3.
If the clearance exceeds the allowable limit, replace. See engine specifications.
CHECKING
TOP
CLEARANCE
1.
Remove
the nozzle
holder.
2.
Lower the piston
in
the cylinder
to
be
measured.
3.
Insert a high-quality fuse from the nozzle holder hole.
Be
careful not
to
let the fuse touch the
valve surface.
4.
Rotate the engine with your hand.
5.
Take
the fuse out carefully.
6.
Measure the place where the fuse
was
crushed with vernier calipers.
7.
If the clearance
is
not within the reference value, adjust
by
inserting a shim between the
cylinder head and the gasket.
131
Reference value
Thickness of gasket
when tightened
Thickness of gasket shim
0.6
to
0.8
mm
0.0236 to
0.00315
in.
1.05
to
1.15
mm
0.0413
to 0.0453 in.
0.20 mm
0.0079
in.
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