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Electric Starting
- If the engine is cold and stiff or if the
battery is not fully charged, starting can be made easier by
slowly hand cranking the engine through the compression
stroke before pushing the starter switch. This permits the
starter to gain momentum before the heavy load of the
compression stroke occurs. This minimizes the drain on the
battery and improves the possibility of starting under such
adverse conditions. Always keep the battery charged, but
especially during cold weather operation.
1. Turn on the fuel supply.
2. Move the choke to the full "on" position (for gasoline
only). A warm engine will require less choking than a
cold engine.
3. Engage the engine start switch briefly to the START
position. The starter life is improved by using shorter
starting cycles with time to cool off between cranking
cycles. Do not operate the starter more than 15
seconds during each minute. Repeat if necessary.
4. When the engine starts, open the choke gradually.
5. The engine should promptly come up to operating
speed.
CAUTION: EQUIPMENT DAMAGE
Never permit the choke to remain on after the engine has
run for a short time. It is not necessary to choke the engine
when it is warm. Avoid over-choking.
STARTING HINTS
NOTE:
For areas of the country where seasonally blended
fuel is used do not keep and use winter blended fuel in the
summer time. This may cause your unit to vapor lock during
the hot summer use.
1. Cold weather
a. Use the proper oil for the temperature expected.
b. Use fresh winter grade fuel. Winter grade
gasoline is blended to improve starting. Do not
use summer gasoline.
c. A slightly richer fuel mixture will usually improve
cold starting.
2. Hot weather
a. Use the proper oil for the temperature expected.
b. Use only summer blended gasoline. Using
gasoline left over from winter may cause the unit
to vapor lock.
c. DO NOT over-choke the unit.
STOPPING AND STORAGE
1. Remove the load.
2. Turn off key the on engine to ‘ground out’ the spark
and shut the unit down.
3. 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 a fuel additive, such as STA-BIL, or an
equivalent, will minimize the formation of gum
deposits during storage. Such an additive may be
added to gasoline in the engine’s fuel tank or to
gasoline in a storage container.
a. Remove the remaining fuel from the fuel tank.
b. 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.
c. While the engine is warm, drain the oil and
refill with fresh oil.
d. Remove the spark plug, pour approximately
1/2 ounce (15 cc) of engine oil into the cylinder
and crank slowly to distribute oil. Replace spark
plug.
e. Clean dirt and chaff from cylinder, cylinder
head fins, blower housing, rotating screen and
muffler areas.
f. 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 electrical voltage and
frequency.
CAUTION: EQUIPMENT DAMAGE
The output voltage should be checked to insure the
generator is working properly 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 individual.
All engines have a tendency to slow down when a load is
applied. When the electrical load is connected to the
generator, 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 generator
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 affects the frequency of
the output current. This frequency variation has no
appreciable effect in the operation of motors, lights and
most appliances. However, electronic equipment and
clocks will be affected 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 approximately as follows, under
varying loads:
LOAD vs. OUTPUT
__________________________________________________________________________________________________________________
Generator Frequency
Voltage
Load
Speed
120V
Applied*
(RPM)
(Hz)
Recpt. **
__________________________________________________________________________________________________________________
None
3750
62.5
129V
Half
3600
60.0
120V
Full
3540
59.0
115V
__________________________________________________________________________________________________________________
*Portion of plant’s rated output current.
** These voltage will vary some unit to unit.
The speed of the engine was carefully adjusted at the
factory so that the generator produces the proper voltage
and frequency. For normal usage, the speed setting
should not be changed. If the generator is being run
continuously on a very light load, it is often advisable to
lower the operating speed slightly. Whenever making any
speed adjustments check the unit with a voltmeter or
tachometer and be sure the speed is correct.
Lower voltage may damage both the generator and any
load connected to it. Running the engine at excessively
high speeds results in high voltage, which may
significantly shorten the life of appliances being used.
