BREAK-IN
PROCEDURE
The unit should be run in the following sequence
using MS/DG, DM, SE or SE/CC oil (see oil re-
quirements for correct viscosity).
1.
One half hour at half
load.
2.
One half hour at three quarter
load.
3. Full
load.
This method of load application speeds piston ring
seating.
Continuous running athalf (light) load forthe
first few hundred hours usually results in poor piston
ring seating, causing higher than normal oil
con-
sumption and blowby.
DUST
AND DIRT
1.
Keep set clean. Keep cooling surfaces clean.
2.
Service air cleaner as frequently as necessary.
3. Change crankcase oil every 50 operating hours or
sooner.
4.
Keep oil and gasoline in dust-tight containers.
5. Keep governor linkage clean.
6. Clean generator brushes, slip rings, and com- -
mutator — do not remove normal (dark brown)
film.
Do not polish.
EXTENDED
OUT-OF-SERVICE
PROTEC-
TION
—
GASOLINE
ENGINES
Generator sets removed from service for extended
periods of time (over 30 days) should be protected
from rust and corrosion. Onan recommends the
following protective procedure:
1.
Run set until thoroughly warm; generator under
at least 50 percent
load.
Stop engine by shutting
off fuel supply to allow engine to drain fuel lines
and carburetor.
2.
'-
>r
fllB[I^Hr
vh
'
le stj
" warm. Refill and attach a
tag indicating viscosity of oil used.
3. Remove spark plugs. Pour
1-ounce
of rust
inhibiting oil (or SAE #10 oil) into each cylinder.
Crank engine over several times. Install spark
plugs.
4.
Service air cleaner.
5. Clean throttle and governor linkage, protect by
wrapping with a clean cloth.
6. Plug exhaust outlets to prevent entrance of
moisture, bugs, dirt, etc.
7. Clean off dirt and dry entire unit. Coat parts likely
to rust with a light film of oil or grease.
8. Disconnect battery and follow standard battery
storage procedure. Apply a film of non-
conductive grease
(e.g.,
vaseline) to battery cable
terminal lugs.
9. Fill fuel tank to prevent condensate contamina-
tion.
10.
Provide a suitable protective cover for the entire
unit.
RETURNING
UNIT
TO
SERVICE
1.
Remove cover and all protective wrapping.
Remove plug from exhaust outlet.
2.
Check tag on oil base and verify that oil viscosity
is still correct for existing ambient temperature.
3. Clean and check battery. Measure specific gravity
(1.260 at 25° C (77° F) and verify level to be at split
ring.
If specific gravity is low, charge until correct
value is obtained. If level is low, add distilled water
and charge until specific gravity is correct: DO
NOT OVERCHARGE.
WARNING |
Do no, smoke
while servicing batteries.
^HBBH^^H^^
Explosive gases are emitted from
batteries in operation. Ignition of these gases can cause
severe personal injury.
4.
Connect batteries.
5. Verify that ' no loads are connected to the
generator.
6. Start engine.
After engine has started, excessive blue smoke will be
exhausted and the engine will run rough until the rust inhibitor
or oil has burned away.
7. After start, apply load to at least 50 percent of
rated capacity.
8. Check all gauges to be reading correctly. Unit is
ready for service.
LOW
TEMPERATURES
1.
Use correct SAE No. oil for temperature
con-
ditions. Change oil only when engine is warm. If
an unexpected temperature drop causes an
emergency, move the plant to a warm location or
apply heated air (do not use open flame) external-
ly until oil flows freely.
2.
Use fresh (not premium) gasoline. Protect against
moisture condensation. Below 0
o
F adjust car-
buretor main jet for slightly richer fuel mixture.
3. Keep ignition system clean, properly adjusted,
and batteries in a well charged condition.
4.
Partially restrict cool airflow but use care to avoid
overheating.
HIGH
TEMPERATURES
1.
See that nothing obstructs air flow to-and-from
the set.
2.
Keep cooling fins clean. Air housing should be
properly installed and undamaged.
3.
Keep
ignition
timing
properly adjusted.
HIGH
ALTITUDE
For operation at altitudes of 2500 feet above sea level,
close carburetor main jet adjustment slightly to
maintain proper air-to-fuel ratio (refer to the
Adjustmeni Seclion). Maximum power will be reduced
approximately 4 percent foreach 1000 feet above sea
level,
after the first 1000 feet.
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