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3.39
ENGINE
3
14. Measure the distance from the Mag crankcase mating
surface to the balance shaft bearing using a dial caliper and
a straight edge. Subtract the thickness of the straightedge
and record.
15. Measure the distance from the PTO crankcase mating
surface to the bearing using the same method outlined in
Step 1, 2, and-3.
16. Add the readings obtained in Step 3 and Step 4.
17. Subtract the counter balancer shaft width measured in Step
2 from the figure obtained in Step 5.
18. Subtract the thickness of the existing shim from the result
of Step 6 to determine if a different shim is needed. The
result must be within the specified range listed at below.
Oil Pump Shaft End Play Adjustment
1. Make sure the pump shaft bearing is firmly seated in the
Magneto side crankcase.
2. Measure the distance from the magneto crankcase mating
surface to the bearing using a dial caliper and a straight
edge. Subtract the thickness of the straightedge and record.
3. Install the gear on the oil pump and measure the width of
the pump and gear. Subtract this measurement from the
measurement recorded in Step 2.
4. Subtract the thickness of the existing shim from the result
of Step 3 to determine if a different shim is needed. See
Shaft End Play Spec.
Counter Balance Shaft End Play:
.008”-.016” (.02-.04 cm)
Oil Pump Shaft End Play:
.008”-.016” (.02-.04 cm)