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ENGINE
3.12
4. Measure free length of tensioner spring. Replace
spring if excessively worn.
Tensioner Spring Free Length:
2.06² (5.23 cm) Std.
1.92² (4.88 cm) Limit
5. Replace entire tensioner assembly if any part is
worn or damaged.
ROCKER ARM/SHAFT
INSPECTION
1. Remove rocker cover.
2. Mark or tag rocker arms to keep them in order for
assembly.
Inspect surface
of followers
Wave
washer
PTO
3. Inspect each rocker arm cam follower surface. If
there is any damage or uneven wear, replace the
rocker arm. NOTE: Always inspect camshaft
lobe if rocker arms are worn or damaged.
4. Remove cylinder block plug using a 14 mm hex
head wrench.
Cylinder block
plug
5. Measure O.D. of rocker shaft. Inspect it for wear
or damage. Compare to specifications.
Rocker Shaft O.D.:
.8656-.8661I (21.987-22.0 mm)
6. Measure I.D. of each rocker arm and compare to
specifications.