
BASIC
OPERATION
INITIAL START UP
-
Use the following checklist to verify
the correct preparation of your engine generator before
-
starting.
On All Units Check:
1. Engine oil, fill as required with correct grade and
quantity.
2.
Check fuel level and fill as required with clean fresh
fuel.
3. Visually check unit for loose parts.
STARTING AND STOPPING
-
The throttle control on
these generators is preset and locked to operate at 3600
RPM (nominal) with no load speed set at 3690 RPM. On-
ly a trained service technician should be allowed to ad-
just this speed setting. See "Operating Speed" section
for additional information.
1.
Manual starting
-
Refer to the engine manual for addi-
tional starting, operating, and stopping instructions.
A. Turn the stop switch to run.
B. Move the choke to the full on position. A warm
engine will require less choking than a cold engine.
C. Grasp starter grip and pull slowly until starter
engages, then pull cord rapidly to overcome com-
pression, prevent kickback and start the engine.
Repeat if necessary.
D.
When the engine starts, open the choke gradually.
E.
The engine should promptly come up to operating
speed.
2.
Starting Hints
A. Cold weather
1. Be sure to use the proper oil for the temperature
expected.
2 .A warm battery has much more starting capaci-
ty than a cold battery.
3.Use fresh winter grade fuel. Winter grade
gasoline has higher volatility to improve start-
ing. Do not use gasoline left over from summer.
4.
A slightly richer fuel mixture will usually improve
cold starting.
B.
Hot weather
1. Be sure to use the proper oil for the tempera-
ture expected.
2. Use only summer blended gasoline. Using gas-
oline left over from winter may cause the unit
to vapor lock, because of the higher volatility of
the winter fuel.
3. Do not over-choke the unit.
3.
Stopping and Storage
A. For gasoline units turn the stop switch to stop.
B. Before extended storage (over 30 days) certain
precautions must be taken to ensure the fuel
doesn't deteriorate and clog the fuel system. Note:
-
The use of fuel additive, such as STA-BIL, or an
equivalent, will minimize the formation of fuel gum
deposits during storage. Such an additive may be
added to gasoline in the fuel tank of the engine,
or to gasoline in a storage container.
1. Remove the remaining fuel from the fuel tank.
2. Start the engine and allow it to run until all the
fuel in the carburetor and the fuel lines has been
used up and the engine stops.
3.
While the engine is warm drain oil and refill with
fresh oil.
4.
Remove the spark plug, pour approximately 112
ounce (15 cc) of engine oil into the cylinder and
crank slowly to distribute oil. Replace spark plug.
5.
Clean dirt and chaff from cylinder, cylinder head
fins, blower housing, rotating screen and muffler
areas. Store in a clean and dry area.
OPERATING SPEED
-The engine-generator must be run
at the correct speed in order to produce the proper elec-
trical voltage and frequency.
The output voltage should be checked
A
to insure the generator is working prop-
erly prior to connecting a load to the
generator. Failure to do so could result
in damage to equipment plugged into
the unit and possible injury to the indi-
vidual.
1.
All engines have a tendency to slow down when a
load is applied. The governor on the engine is de-
signed to hold the speed nearly constant. When the
electrical load connected to the generator is increas-
ed, the engine is more heavily loaded, and as a result
the speed drops slightly. This slight decrease in
speed, together with the voltage drop within the gen-
erator itself, results in a slightly lower voltage when
the generator is loaded to its full capacity than when
running no load. The slight variation in speed also af-
fects the frequency of the output current. This fre-
quency variation has no appreciable effect in the
operation of motors, lights and most appliances.
However, electronic equipment and clocks will be af-
fected if correct RPM is not maintained. See load vs.
Output chart.
Although individual units and models may vary
slightly, the normal voltage and frequency of the
engine-generators described in this book are approx-
imately as follows, under varying loads:
I
LOAD vs. OUTPUT
Generator Frequency Voltage
Speed
Applied* Recpt.
Half 3600 60.0 120V
I
Full 351 0 58.5 115V
*Portion of plant's rated output current.
2. The speed of the engine was carefully adjusted at
the factory so that the generator produces the prop-
er voltage and frequency. For normal usage, the
speed setting should not be changed. If the gener-
ator is being run continuously on a very light load,
it is often advisable to lower the operating speed
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