Chapter 4: The Fuel System and Governor
48
7. Slide the governor shaft into the engine block
from the inside of the engine.
8. Carefully slide a new seal over the governor
shaft and seat using a 1/4” deep well socket.
See Figure 4.57.
9. Install the hair pin clip.
10. Rotate the governor shaft so that the bent end is
standing straight up. See Figure 4.58.
NOTE: If the governor shaft is not pointing up
while sliding the sump on, the governor shaft will
not catch the governor cup. This will prevent the
governor from changing the engine rpm and
usually presents as an overspeeding engine.
11. Install the sump by following the steps described
in Chapter 10: Disassembly.
12. Rotate the governor shaft clockwise as far as it
will go.
13. Position the top of the arm about 3/16” (.476cm)
from the boss on the casting that provides a
mounting point for the fuel tank bracket.
14. Install the governor arm by following the steps
described in the previous section.
15. Install the engine on the unit.
16. Test run the engine and adjust the top no load
engine rpms by following the steps described in
“Disassembly and rebuilding the carburetor” sec-
tion of this chapter.
Governor cup and the governor gear
1. Remove the engine from the unit.
2. Remove the sump by following the steps
described in Chapter 10: Disassembly.
3. Remove the two screws that hold the governor
gear plate to the sump using a 10mm wrench.
See Figure 4.59.
Figure 4.57
Seal
Figure 4.58
Governor shaft must point
straight up while sliding
the sump on
Figure 4.59
Remove these screws
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