Onan 3.0 AJ Operator's Manual page 10

3. Drain the oil from oil base while engine is still
warm. Replace the oil filter if so equipped.
Replace drain plug and refill. Attach a warning tag
stating type and viscosity of oil used.
4. Remove spark plug. Spray 1 ounce of rust in¬
hibitor oil (or SAE #10) into the cylinder. (Spray
cans work well for this application.) Turn engine
over by hand at least 2 complete revolutions.
Replace the spark plug.
5. Replace the air cleaner at least on an annual
basis.
6. Plug the exhaust outlet to prevent entrance of
moisture, dirt, bugs, etc.
7. Clean and oil all exposed engine parts including
carburetor and governor linkage.
8. Wipe generator brushes, slip rings, housing, etc.
Do not apply any lubricant or preservative.
9. Remove the battery and store in a cool dry place.
Coat the battery terminals and cable connections
with vasoline or grease to prevent any corrosion.
Recharge the battery at least monthly or maintain
with a trickle type battery charger.
10. Provide a suitable cover if the unit is exposed to
the elements.
RETURNING THE UNIT TO SERVICE
1. Remove the cover and all protective wrapping.
Wipe the oil film off all exposed engine parts.
Remove the plug from the exhaust outlet.
2. Visually inspect the unit for any damage. Check to
be sure the carburetor and governor linkage are
free. Remove the generator end bell band and
check to be sure the brushes work freely in their
holders.
3. Check the tag to ensure oil of the proper brand
and grade has been installed. Check the oil level.
4. Install the battery (be sure battery is fully charg¬
ed), observing proper polarity. Ground is
negative.
5. Remove spark plugs, clean and gap. Turn the
engine over by hand several times. Reinstall spark
plugs.
6. Remove all load and start the generator set at the
unit. Initial start may be slow due to oil or rust
inhibitor in the cylinders. Excessive smoke and
rough operation will occur until the oil or rust
inhibitor is burned off.
7. Apply a 50 percent load after the set runs smooth.
Allow the generator set to warm up (1 hour) with
the load connected. Check speed and voltage.
8. Unit is now ready for service.
GENERATOR MAINTENANCE
The generator normally needs little care other than a
periodic check of the brushes, commutator and
collector rings. If a major repair job on the generator
should become necessary, have the equipment
checked by a competent electrician who is thorough¬
ly familiar with the operation of electric generator
equipment.
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