Governor (7.5Kw) - Kohler l654 Service Manual

Figure 7-11. Governor Sensitivity Adjustment (4.5kW Twin)
1. To increase speed, loosen the inside speed adjusting
nut (Figure 7-12) and tighten the outside nut to draw the
eyebolt closer to the bracket which is mounted on the
governor. This will pull the throttle open.
2. To decrease speed, ~Ioosen the outside nut and tighten
the inside nut tovforce the eyebolt away from the bracket.
.3. When speed is correct, tighten the nut that was loosened
to lock the eyebolt at the new setting.
SPEED ADJUSTING
EYE BOLT
UPPER NUT
CRANKCASE
BREATHER
INCREASE SPEED
\
DE NUT
THROTTLE /I-VI
LINKAGE
~-??5lll
SENSITIVITY
BRACKET
GOVERNOR'
GOVERNOR
SPRING
INCREASE SENSITIWITY
Figure 7-12. Governor Components
and Adjustments (5.5kW, 7kW)
7-8.3. Sensitivity Adjustment. If the governor is too sensi-
tive, speed surging will occur with change in load. If the
governor is not sensitive enough, a big drop in speed will
occur
when normal load is applied.
1. To make the governor moresensitive, loosen the upper
nut and tighten the lower nut to force the eyebolt down-
ward.
2. To
make the governor less sensitive, loosen the lower
nut and tighten the upper nut to draw the eyebolt upward.
3. Retighten the nut that was loosened to lock the eyebolt
at the new setting.
7-8.4. Anti-Dieseling Control Adjustment. Used with car-
buretor assembly 48 053 29. See Figure 7-13 for dimen-
sions.
1. With anti-dieseling control dimensions correct, hold
governor arm in fully closed position. See Figure 7-13 (bot-
tom view).
2. With solenoid plunger fully in solenoid, adjust solenoid
coil so chain is taut. Tighten solenoid hold-down clamp.
3. With governor arm fully closed, adjust carburetor idle
stop screw one-turn in after screw makes contact with stop
spring.
NOTE
Solenoid is energized only when stop button is
held in stop position.
7-9. GOVERNOR (7.5kW)
7-9.1 General. This model is equipped with a constant
speed type governor. The governor drive gear is driven by
the cam gear. Lubrication is provided through an external
oil line which connects to the engine lubrication system.
79.2. Speed Adjustment. The throttle shaft is fixed
at a
definite length to establish a load speed of 1800 RPM
(1500 RPM, 50 Hz models). Any variation in speed fre-
quency changes the output of the generator. For this reason
only slight readjustment of speed is possible. Proceed as
follows:
NOTE
Due to variances in generator output wave-
shape, not all pointer type frequency meters are
compatible.
1. To increase speed, loosen locking nut on speed adjusting
screw (Figure 7-14), and turn screw in clockwise direction.
7-7