Onan CCK Series Operator's Manual And Parts Catalog

ELECTRIC CHOKE
If extremes in starting temperatures require a readjust*
ment of the choke, loosen slightly the two cover retain¬
ing screws. For less choking action, turn the covet
assembly a few degrees in a clockwise direction. For
more choking action, turn counterclockwise. Retighten
the covet screws.
GOVERNOR
Before making fittal governor adjustments, run the
plant about 15 minutes under light load to teach normal
operating temperature. (If governor is completely
out of adjustment, make a preliminary adjustment at
no load to first attain a safe voltage operating range).
Engine speed determines the output voltage and current
frequency of the generator. By increasing the engine
speed, generator voltage and frequency are increased,
and by decreasing the engine speed, generator voltage
and frequency ate decreased. An accurate voltmeter
or frequency meter (preferably both) should be con¬
nected to the generator output in order to correctly
adjust the governor. A small speed drop not noticeable
without instruments will result in an objectionable
voltage drop. The engine speed can be checked with
a tachometer.
A bindihg in the bearings of the governor shaft, in the
ball joint, or in the carburetor throttle assembly will
cause erratic governor action or alternate increase
and decrease in speed (hunting). A lean carburetor
adjustment may also cause hunting. Springs of all
kinds have a tendency to lose their calibrated tension
through fatigue after long usage, if all governor and
carburetor adjustments are properly made, and the
governor action is still erratic, replacing the spring
with a new one and resetting the adjustments will
usually conect the trouble.
1. Adjust the carburetor main jet for the best fuel
mixture while operating the plant with a full rated
load connected.
2. Adjust the carburetor idle needle with no load
connected.
3. Adjust the length of the governor linkage and
check linkage and throttle shaft for binding or
excessive looseness.
4. Adjust the governor spring tension for rated speed
at no load operation with booster disconnected
(or held inoperative).
5. Adjust the governor sensitivity. g
6. Recheck the speed adjustment.
7. Set the carburetor throttle stop screw.
8. Set the vacuum speed booster.
GOVERNOR AND BOOSTER
The governor and booster control the speed of the
engine. A speed adjustment includes adjusting both
devices (Figure 12).

Onan CCK Series Specifications

General

Fuel Type	Gasoline
Fuel System	Carburetor
Frequency	60 Hz
RPM	1800 RPM
Starting System	Electric or Recoil
Starting Method	Electric or Recoil Start
Voltage	120/240V
Compression Ratio	6.5:1
Ignition System	Battery Ignition
Phase	Single-phase