Onan CCK Service Manual

'HEX. CAP SCREW
'FLAT WASHER
breather
HOSE
HOSE CLAMP
clamp
breather
TUBE
by-pass valve
bapfle
CRANKCASE BREATHER
Clean or replace crankcase breather baffle periodically. Be sure
baffle material doesn't come apart and work into me manifold.
FIGURE 10. OIL SYSTEM COMPONENTS
CRANKCASE BREATHER
The crankcase breather maintains a partial vacuum in
the crankcase during operation to control oil loss and
ventilate the crankcase, Figure 10.
To disassemble, remove the rubber cap from the
crankcase tube and pry the valve out of thecap. Wash
the valve in fuel at regular intervals and, if defective,
replace it. Also, pull thebaffleoutofthebreathertube
and clean it. Install the valve with the perforated disk
toward the engine.
OIL FILTER (OPTIONAL)
The full-flow filter (Figure 10) is mounted on the filter
plate at the left front comer of the crankcase. Replace
normally after every 200 hours of operation. Remove
the filter by turning counterclockwise. Lubricate the
gasket on the new filter with engine oil. install the
filter until the gasket touches the base and tighten 1/2
turn; do not overtighten.
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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)