Onan CCK User Manual

BATTERY CARE
To increase battery life, the operator can perform a
number of routine checks and some preventive
maintenance.
1. Keep the battery case clean and dry.
2. Make sure the battery cable connections are
clean and tight. Use a terminal puller when
removing cables for any reason.
3. Coat the battery terminals with a mineral grease
or petroleum jelly to reduce corrosion and oxida¬
tion.
4. Identify each battery cable to be positive or
negative before making any connection. Always
connect the ground (negative) cable last.
5. Maintain the electrolyte level by adding water
(drinking quality or better) as needed for filling to
split level marker. The water ingredient of the
electrolyte evaporates, but the sulphuric acid
ingredient remains. Therefore, add water, not
electrolyte.
6. Avoid overcharging when recharging. Stop the
boost charge when the specific gravity is 1.260
and the electrolyte is 80° F (26.7° C).
FUEL SOLENOID
The positivefuel shutoff valveprevents flooding of the
generator set, when not in use, should the vehicle fuel
tank become pressurized.
ONAN ELECTRIC FUEL PUMP
Every 100 operating hours or sooner, clean the filters.
To gain access to the filters in the Onan fuel pump
(Figure 8), remove the four top Phillips head screws
and lift off the top filter assembly. Clean the two
screen filters, reinstall and remount the top filter
assembly. Be sure the gasket is in place.
COOLING SYSTEM
The generator set is cooled by a flywheel blower fan
which pulls air over the cylinders and cooling fins.
The air path is directed by sheet metal shrouds and
plates. These shrouds and plates must always be
installed properly so unit does not overheat.
Check and ciean (if necessary) the cooling fins at
least every 100 hours of operation. Remove any dust,
dirt or oil which may have accumulated. Check
compartment air inlet and power plant air outlet for
buildup of dirt, chaff, etc.
AIR CLEANER
Under normal operating conditions clean the airfilter
every 50 hours. To clean, remove foam strip and
element and tap element on a clean flat surface to
dislodge the dirt particles. Do not use high pressure
compressed air as damage may occurto paperpleats.
Replace element every 200 hours. Replace more often
in dusty conditions.
WARNING \ Re P lace with Onan fuel pump only (as listed
in PARTS INFORMATION section). Standard
automotive pumps are high pressure type which may force
excessive gasoline into engine causing a fire or explosion.
Replace with “UL Tested” Onan air filter only.
Improper filter may bum due to backfire.
AIR CLEANER AIR CLEANER
FiGURE 9. AIR CLEANER ELEMENT

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)