Run engine in clean area when air intake ducting is removed. Dirt, dust, and
particles in unfiltered air can enter engine and damage parts or cause mechanical
Do not exceed engine speed required to set governor gap adjustment. Hand
operation of governor differential lever bypasses the governor function.
Overspeeding could cause engine damage.
Start and operate engine between 1100 and 1300 RPM by manually operating the differential
Check gap between low speed spring cap (30) and high speed spring plunger (31) with feeler
gage (32). Gap must be 0.0015 to 0.0020 inches.
To adjust governor gap, loosen nut (33) and turn screw (34) in governor operating shaft lever (35).
Governor gap must be 0.0015 to 0.002 inch with engine operating between 1100 to 1300 RPM.
Stop engine. Move the differential lever (29) to NO FUEL position.
Hold adjusting screw (34) in position and tighten locknut (33).