CRANKSHAFTS & CAM GEARS
End Play
Fig. 20. Checking Crankshaft End Play
If the end play is more than .008" (.20 mm) with one
.015" (.38 mm) gasket in place, a .009" (.23 mm) or .005"
(.13 mm) gasket may be used. Fig. 20.
If the end play is more than .008" (.20 mm) with one
.005" (.13 mm) gasket in place, a thrust washer is
available and is placed on the crankshaft power take-off
end. Fig. 20.
222949 Thrust Washer for 1.181" (30 mm) diameter
crankshaft.
222951 Thrust Washer for 1.378" (35 mm) diameter
crankshaft.
NOTE: Thrust washer cannot be used on ball bearing
engines.
Checking End Play
On models with a removable base, the end play can be
checked with a feeler gauge between the crankshaft
thrust face and the bearing support on plain bearing
engines. Fig. 20.
Fig. 21. Correcting Crankshaft End Play
SERVICE PROCEDURE FOR
ENGINE MODEL SERIES 300400 and
320400
Install breaker plunger and tappets, then insert cam gear
from power take-off side of cylinder. See Fig. 22.
Fig. 22. Inserting Cam Gear
Slide cam gear shaft through power take-off bearing and
into cam gear. See Fig. 23.
Fig. 23. Sliding Cam Gear Shaft
Insert magneto side cam gear bearing on cylinder.
Torque cam gear bearing screws to 85 inch pounds (1.0
mkp, 9.6 N•m). Install long cam gear shaft bolt (5-1/2")
(14 cm) to prevent loss of shaft. See Fig. 24.
Fig. 24. Inserting Cam Gear
CHECKING AND CORRECTING
CAM GEAR END PLAY
Cam gear end play tolerance is machined at the factory
and normally requires no adjustment, unless the
magneto side cam gear bearing or cam gear is replaced.
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