10.7
Section 10
Reassembly
10
Figure 10-22. Exhaust Cam Shaft Installation.
3. Lubricate the cam surfaces of the cam gears with
light grease or oil.
4. Assemble and install the ACR (automatic
compression release) into the exhaust cam gear if
removed for servicing.
a. Install the spring onto the ACR weight with
loop around post, and the formed upper leg
hooked behind the upper section. See Figure
10-23.
b. Install the ACR assembly into hole of exhaust
cam gear and hook the long leg behind the
notchedtab. See Figure 10-24.
Figure 10-23. Spring Installed on ACR Weight.
2. Apply a dab of grease to the formed groove in the
thrust washer. Slide the washer onto the cam
shaft so the short drive pin is seated in the
groove. The grease will hold the washer in
position. Pivot the exhaust cam lever toward the
push rod bore, then insert the cam shaft into the
counterbore of the crankcase. Make sure the pin
stays in the groove of the thrust washer. See
Figure 10-22.
Figure 10-25. Installing Exhaust Cam Gear.
Exhaust Lever
Exhaust Cam
Shaft
Figure 10-24. Hooking ACR Spring onto Exhaust
Cam Gear.
5. Lift the exhaust cam lever and install the exhaust
cam gear with assembled ACR onto the cam
shaft, engaging the slot with the upper drive pin.
Rotate the gear and shaft so the “EX” timing mark
on the cam gear is in the 8 o’clock position. Install
the thrust washer onto the cam shaft. See Figure
10-25.
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