INSTALL GOVERNOR ASSEMBLY AND SPEED CONTROL (Refer to Figures 10 and 11)
Socket, Socket Wrench, 10 mm
Combination, 19 mm
Handle, Socket Wrench, Ratchet, 3/8" Drive
Key, Socket Head Screw, 8 mm
Screwdriver, Flat Blade (1/8 x 6 in.
Refer to Figure 10.
The adjustments described in the following steps are critical to proper operation of the engine. Improper
adjustment will cause RPM fluctuation, hard starting and loss of engine power.
Installation of the governor assembly and speed control involves shifting the camshaft in and out of the
crankcase to provide access for installation of governor assembly and speed control.
Using a vernier caliper, adjust governor rod (1) until the distance (A) between governor rod bearing holes is 1.476 in.
(36.5 mm) center to center, 1 turn.
Assemble the two pieces (2 and 3) of the governor assembly (4), using a rubber band to temporarily hold those two
pieces of the governor assembly together. Attach governor rod (1) to governor assembly (4).
For ease of installation of the governor assembly, as necessary, partially remove the camshaft to gain
access during installation of the governor assembly.
Lift the camshaft enough to insert and align the governor assembly in the crankcase. Insert the governor journal (5)
through external crankcase hole (6), through the holes (7) in the governor assembly (4) and into mounting hole on
opposite side of crankcase. Press governor journal (5) into position. Ensure governor is free to move without binding.
Remove rubber band.
Install washer (8) and governor plug (9) over the governor journal (5).
Install O-ring (10) on inside speed control lever (11).
Attach governor spring (12) to inside engine speed control lever (11).
It may be necessary to rotate camshaft to allow for installation of speed control lever. After completion of
speed control lever installation, ensure timing marks on camshaft gear are on either side of timing mark on
crankshaft gear (figure 9).
Install inside speed control lever (11) from inside crankcase. On outside of crankcase install retaining clip (13) on inside
speed control lever (11).