10.4
Section 10
Reassembly
Figure 10-11. Thrust Bearing, Washer, and Shim
Used on Some Models.
Closure
Plate
Bearing
Race
Thrust Shim
Needle Thrust
Bearing
Thrust
Washer
Governor
Cross Shaft
Timing
Marks
3. Turn the governor cross sha clockwise until the
lower end of the sha contacts the cylinder. Make
sure the cross sha remains in this position while
installing the camsha . See Figure 10-10.
4. Slide the camsha into the bearing surface of the
crankcase, positioning the timing mark of the
camsha gear at the 6 o’clock position. Make sure
that the camsha gear and cranksha gear mesh,
with both timing marks aligned. See Figure 10-10.
Figure 10-10. Aligning Crankshaft and Camshaft
Timing Marks.
Oil Pump Assembly
The oil pump is mounted inside the closure plate. If
service was required, and the oil pump was removed,
refer to the assembly procedures under Oil Pump
Assembly in Section 9.
Governor Gear Assembly
The governor gear assembly is located inside the
closure plate. If service was required, and the
governor was removed, refer to the assembly
procedures under Governor Gear Assembly in
Section 9.
Thrust Bearing, Washer and Shim
Some specifi cations use a needle type thrust bearing,
thrust washer and shim spacer to control the end
play of the cranksha . See Figure 10-11. If these items
are noted during disassembly, make sure they are
reinstalled in the sequence shown in Figure 10-12. A
diff erent procedure will have to be followed to check
and adjust cranksha end play on these models.
Figure 10-12. Correct Sequence of Thrust Bearing,
Washer, and Shim in Closure Plate.
The race for the thrust bearing presses loosely into
the closure plate. If it is not already installed, push it
into the cranksha bore inside the closure plate. Pack
the thrust bearing with heavy grease and stick the
bearing into the race. Wipe some grease on the face of
the thrust washer and stick it onto the thrust bearing.
Wipe some grease on the face of the original shim
spacer and stick it onto the thrust washer.
Install the closure plate onto the crankcase without
applying RTV sealant and secure it with only two or
three of the fasteners at this time. Use a dial indicator
to check the cranksha end play. End play should
be 0.070/0.270 mm (0.0028/0.0100 in.). Shim spacers
are available in the three color coded thicknesses if
adjustment is needed.
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