THE FUEL SYSTEM AND GOVERNOR
36
Governor cup and the governor gear
The Governor gear and cup are located inside the
crankcase cover.
See Figure 4.25.
The flyweights and the governor cup are inter
locked on this family of engines. The governor gear
and cup are not serviceable. If there is a failure of the
governor gear, cup or flyweights the crankcase cover
must be replaced as an assembly.
Governor adjustment
To adjust the governor:
1. Remove the fuel tank by following the proce-
dures described in the fuel tank section of this
chapter.
2. Loosen the governor arm nut but do not remove
the nut completely.
3. Pry open the governor arm crimp with a flat head
screwdriver.
See Figure 4.26.
4. Using pliers, grab the flat section at the top of
the governor shaft and rotate it in a counter
clockwise direction as far as it can go.
5. Push the governor arm to the right (the spring
should pull it in this direction).
NOTE: Rotating the shaft counter clockwise will
ensure the governor cup is pressed all the way
down on the governor gear flyweights. Pushing
on the governor arm to the right ensures the
throttle is wide open against the throttle stop.
6. Re-tighten the governor arm nut to crimp the
governor arm onto the governor shaft.
7. Install the fuel tank.
8. Test run the engine in a safe area. Set the
engine RPM’s to 3500
+ 100.
Figure 4.25
Governor gear
Figure 4.26
Loosen nut
Rotate shaft
Push on arm
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