Onan CCK Service Manual

Two-Speed Governor (Electric Solenoid Type)
Low speed is controlled by the Jow-speed governor
spring. High speed is controlled by both governor
springs {low-speed and high-speed spring).
To adjust the two-speed governor, follow the steps as
outlined below, and refer to Figure 13a.
1. Run the engine and make necessary carburetor
adjustment.
2. Adjust low-speed tension for the desired low
speed (recommended minimum idling speed of
1,500 rpm for engines operating under load at idie
speed). Decreasing spring tension decreases
enginespeed. Increasing spring tension increases
engine speed.
3. Adjust high-speed tension by turning the plunger
on the adjusting stud (with locking nut loosened)
so when the plunger is pulled all the way into the
solenoid it gives the desired high speed. Approx¬
imately 3,000 rpm is the recommended maximum
full load speed for continuous operation.
Extreme tension on the high
speedgovemorspringvfiltcause
damage to the solenoid colt Tension must be
loose enough so that the plunger will pull all the
way into solenoid when operating at high speed.
Failure to do so will not open the contact points
within the solenoid, which will cause the coll to
overheat
4. Adjust the sensitivity for high-speed operation to
attain the smoothest no-load operation.
To decrease sensitivity (allow more speed drop
from no-load to full-load operation): Move the
high-speed governor spring outward into a dif¬
ferent hole in the bracket so that the point of pull
by the spring is moved slightly farther from the
governor shaft.
To increase sensitivity (closer regulation by the
governor which permits less speed drop from no-
load to full-load operation): Move the high-speed
governor spring inward intoadifferent hole of the
bracket so that the point of pull by the spring is
moved slightly closer to the governor shaft.
SOLENOID
CARBURETOR
THROTTLE THROTTLE PLATEf
-T» I
BRACKET
HIGH SPEED
GOVERNOR SPRING
THIS DISTANCE
DETERMINES SENSITIVITY
GOVERNOR ARM
AND SHAFT
GOVERNOR CUP
GOVERNOR SHAFT
YOKE
FIGURE 13*. ELECTRIC GOVERNOR
The low-speed governor spring normally requires
no sensitivity adjustment and can be moved to
another hole in the bracket to allow proper
adjustment of the high-speed sensitivity. If sensi¬
tivity adjustment is required for low speed, move
the low speed spring in the same manner as
instructed for the high-speed spring.
18

Onan CCK Specifications

General

Cylinders	2
Ignition System	Battery ignition
Fuel Type	Gasoline
Cooling System	Air-cooled
Fuel System	Carburetor
Starter	Electric
Governor	Mechanical
Max RPM	1800 RPM
Engine Type	4-cycle
Bore and Stroke	3.25 x 3.625 inches (82.55 x 92.08 mm)