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circuit breaker panel . In the event of an over-
loaded circuit, the cause should be corrected and
a new fuse of the same capacity installed . For
explanation of 12-volt fuse block number code,
refer to GENERAL DATA AND SPECIFICA-
TIONS later in this manual .
The main circuit breaker panel, also located
in the living area electrical compartment, con-
tains circuit breakers that are designed to snap to
the "OFF" position in the event of an overloaded
120-volt circuit . Once the cause of the overload
is corrected the circuit breaker switch may be
moved back to the "ON" position .
The 120-volt/12-volt power converter, lo-
cated in the living area electrical compartment,
requires no periodic maintenance but care must
be taken to ensure a proper flow of air through
and around the unit. Do not set objects close to
or on top of it. Do not let the power converter
get wet and keep it as clean as possible to help
assure long life. The unit could be cleaned with
air pressure (30 psi max .) if necessary.
ONAN MOTOR GENERATOR
MAINTENANCE
SERVICE INTERVALS
For service intervals refer to the Maintenance
Chart provided earlier in this section on page 73 .
CHECKING OIL LEVEL
Check the oil level daily, or at least every
eight hours of operating time. Check more often
on a new unit as oil consumption is generally
higher until piston rings seat properly.
CHANGING OIL
Initial oil change should be made after the
first 25 hours of operation; change every 50 to
100 hours after that. If operating in extremely
dusty or cold weather conditions, change oil
more frequently.
The 4KW Model has an oil capacity of 3
quarts, 3 1
/2
quarts if replacing oil filter .
The 6KW Model has an oil capacity of 4
quarts; 4 1
/2
quarts if replacing oil filter.
9 1
1
VOLTAGE REGULATOR-RECTIFIER
2 35 AMP CIRCUIT BREAKER
3 BREAKER POINT BOX
4 GOVERNOR LINKAGE
5 BLOWER SCROLL
6
ELECTRIC CHOKE
7 DIPSTICK (OIL FILL)
8 CHOKE LINKAGE
9 CARBURETOR
Onan Motor Generator (Top View)
Do not mix brands or grades of motor oil . Use
a good quality oil with the designation SE/CC .
If necessary to add oil between changes, use the
same brand and grade of oil .
Use the following chart as a guide for the
proper oil according to temperature ranges
NOTE:
Fill engine with oil through dipstick tube.
The oil drain plug is located on the bottom
side of the engine oil base. Unit must be pulled
out on its slide rail to gain access.
OIL FILTER
Change the crankcase oil filter at least every
200 hours on the 4KW Model and every 100
TEMPERATURE
RECOMMENDED OIL
Above 30°F.
SAE 30
0°F. to 30°F.
SAE 5W30 or 1OW40
Below 0°F.
SAE 5W30
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