Onan CCK Service Manual

Starting
PRE-STARTING
Preparations for the initial and each additional star¬
ting operation should include careful checks of the
oil, fuel, cooling, and electrical systems. The cylinder
air housing door should be closed withal! airshrouds
in place.
Crankcase Oil: Be sure the crankcase has been filled
with oil to the “FULL” mark on the oil level indicator,
Figure 1. Use oil with the API (American Petroleum
Institute) designation SE or SE/CC. Do not use an oil
with the designation CD unless it is also designated
SE and the oil manufacturer certifies it will perform
satisfactorily in gasoline engines.
For gaseous operation, use an ashless or low-ash
detergent oil specifically made for gaseous-fueled
engines.
CAP AND OIL
LEVEL INDICATOR
KEEP OIL
AT THIS LEVEL.
NEVER OPERATE
ENGINE WITH OIL
BELOW THIS LEVEL.
A874
-FULL
ALWAYS REPLACE
CAP TIGHTLY, OR
OIL LEAKAGE HAY
OCCUR.
FIGURE 1. OIL LEVEL INDICATOR
WARNING ) Crankcase pressure could blow out
fj 0 f 0 /7 and cause serious burns. Do
NOT check oil while the engine is operating.
OIL CAPACITIES
Electric Start
3-1/2 qts. (3.31 litre)
4 qts. (3.8 litre with filter)
Manual Start
3 qts. (2.8 litre)
3-1/2 qts. (3.3 litre with filter)
Engine oil should always bedrained when the engine
is warm. Remove pipe plug to drain engine oil.
Recommended Fuel: Use clean, fresh, regular grade,
automotive gasoline. Do not use highly-leaded
premium types.
For new engines, the most satisfactory results are
obtained by using nonleaded gasoline. For older
engines that have previously used leaded gasoline,
heads must be taken off and all lead deposits removed
from engine before switching to nonleaded gasoline.
I^CAUTION^ If lead deposits are not removed
—*~*-^*-*~& irom engine before switching from
leaded to nonleaded gasoline, pre-ignition could
occur causing severe damage to the engine.
WARNING I Spilled fuel might Ignite and cause
serious personal Injury or death.
Never fill the fuel tank when the engine is running.
STARTING
Electric Start
1. Move the ignition switch to ON.
2. Push the START button to crank the engine.
Manual Start
1. Engine priming before starting is shown in Figure
5 (manual start only).
2. Pull the choke control about 3/4 of the way closed
or as necessary according to temperature con¬
ditions.
3. Pull the start rope with a fast steady pull to crank
the engine. Do not jerk or let rope snap back
under its own power.
4. As the engine warms up, adjust the choke
gradually to its fully open position.
APPLYING LOAD
Apply load to a new or reconditioned engine gradual¬
ly in about four steps; not less than 30 minutes
running time for each step. Start with 1/4 load, then
1/2, 3/4 and full-load.
STOPPING THE ENGINE
When possible, disconnect all load before stopping
the engine. Engines equipped with battery ignition
are stopped by setting the ignition switch to the off
position.
Open the fuel line valve (when used) and operate
primer to assure fuel supply after filling an empty
tank.
Engines equipped with magneto ignition are stopped
by pushing the stop button (located on the blower
housing). Hold in until engine completely stops.

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)