8.11
Section 8
Disassembly
8
NOTE: Engine Serial No. 332740003 and Lower, use
a rubber outlet between the oil pump outlet
and lower main bearing area. Some models
use an open seal with an internal passage to
feed oil to the lower bearing. Some models
use a closed or solid seal, and the cranksha
is crossed-drilled to feed oil to the lower
bearing. See Figure 8-44.
Engine Serial No. 332740003 and Higher, the
outlet of the oil pump is closed and no rubber
seal is used. See Figure 8-45.
2. Remove the screws securing the cam levers to the
crankcase. See Figure 8-41. Mark the cam levers
for proper reassembly.
NOTE: Cam Gear assemblies may contain either two
or four rivets. The four rivet design is shown
in figures.
Figure 8-41. Removing Cam Levers.
3. Pull the exhaust side cam sha and sloed thrust
washer, out of the crankcase. See Figure 8-42.
Figure 8-42. Removing Exhaust Side Cam Shaft
and Slotted Thrust Washer.
4. If the engine contains an internal drain back
tube, unhook it from the oil pump and pull it
out of the crankcase passage. Check for cracks,
brileness or damage. Replace if questionable in
any way. See Figure 8-43.
Figure 8-44. Outlet Seal Styles (Some Models).
Open Outlet Style
(Requires Seal)
Closed Outlet Style
Drain Back Tube
Figure 8-43. Removing Drain Back Tube (Some
Models).
Open Seal Closed Seal
Figure 8-45. Pump Outlet Styles.
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