Kohler COMMAND CH18, Service Manual

Page: 55 / 232

5.22
Section 5
Fuel System and Governor
Figure 5-41. Governor Control Connections.
Choke Control Cable
Throttle
Control
Cable
Kill Switch
Choke Control Lever #1
Throttle Control Lever #2
Choke Linkage
Z Bend
Throttle Control Cable
Choke
Control
Cable
Right Side Pull
High Speed
Control Lever
High Speed
Adjusting
Screw
Dual Control High
Speed Lever Stop Screw
"Do Not Remove"
Kill Switch Adjusting Screw
Left Side Pull
Sensitivity Adjustment
Governor sensitivity is adjusted by repositioning the
governor spring in the holes of the governor lever. If
speed surging occurs with a change in engine load, the
governor is set too sensitive. If a big drop in speed
occurs when normal load is applied, the governor
should be set for greater sensitivity. See Figure 5-40
and adjust as follows:
1. To increase the sensitivity, move the spring closer
to the governor cross shaft.
2. To decrease the sensitivity, move the spring
away from the governor cross shaft.
High Speed (RPM) Adjustment (Refer to Figure 5-41.)
1. With the engine running, move the throttle
control to fast. Use a tachometer to check the
RPM speed.
2. Loosen the lock nut on high speed adjusting
screw. Turn the screw outward to decrease, or
inward to increase the RPM speed. Check RPM
with a tachometer.
3. When the desired RPM speed is obtained,
retighten the lock nut.
NOTE: When the throttle and choke control cables
are routed side-by-side, especially under a
single clamp, there must be a small gap
between the cables to prevent internal
binding. After the high-speed setting has
been completed, check that there is a gap of
at least
0.5 mm (0.020 in.) between the
control cables.
Figure 5-40. Governor Sensitivity Adjustments.
Governor
Lever