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MAINTENANCE
NOTE: At this point watch the camshaft sprocket
locating pin and slowly rotate engine until locating
pin is facing upward, directly in line with the
crankshaft to camshaft center line as shown. The
camshaft lobes should be pointing downward.
6.
Verify accurate TDC positioning by observing the "T"
mark aligned with the pointer in the timing inspection hole.
In this position there should be clearance on all valves.
Intake Valve Clearance Adjustment
1.
Insert a .006" (.15mm) feeler gauge between end of intake
valve stem and clearance adjuster screw.
2.
Using a 10 mm wrench and a screwdriver, loosen adjuster
lock nut and turn adjusting screw until there is a slight drag
on the feeler gauge.
3.
Hold adjuster screw and tighten adjuster lock nut securely.
4.
Re-check the valve clearance.
5.
Repeat adjustment procedure if necessary until clearance is
correct with locknut secured.
6.
Repeat this step for the other intake valve.
Intake Valve Clearance:
.006" (.15 mm)
Exhaust Valve Clearance Adjustment
1.
Insert .006 feeler gauge(s) between end of exhaust valve
stem and adjuster screw(s).
Feeler Gauge for Both Valves
2.24
NOTE: Both feeler gauges should remain inserted
during adjustment of each valve.
2.
Loosen locknut(s) and turn adjuster screw(s) until there is
a slight drag on feeler gauge(s). The Valve/Clutch Adjuster
Tool (PA-44689) can be used to adjust the engines valves.
NOTE: The exhaust valves share a common rocker
arm, and must be adjusted using two feeler gauges.
Exhaust Valve Clearance:
.006" (.15 mm)
3.
When clearance is correct, hold adjuster screw and tighten
locknut securely
4.
Re-check the valve clearance.
Exhaust Pipe
WARNING
Do not perform clean out immediately after the engine
has been run, as the exhaust system becomes very hot.
Serious burns could result from contact with exhaust
components.
To reduce fire hazard, make sure that there are no
combustible materials in the area when purging the
spark arrestor.
Wear eye protection.
Do not stand behind or in front of the vehicle while
purging the carbon from the spark arrestor.
Never run the engine in an enclosed area. Exhaust
contains poisonous carbon monoxide gas.
Do not go under the machine while it is inclined. Set the
hand brake and block the wheels to prevent roll back.
Failure to heed these warnings could result in serious
personal injury or death.
The exhaust pipe must be periodically purged of accumulated
carbon as follows:
1.
Remove the clean out plugs located on the bottom of the
muffler as shown below.
Clean Out Plug
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Troubleshooting
