17
1’
.
io
FIGURE
4.
OPERATING CYCLE
MANUAL CRANKING (Older Models)
1.
2.
’
3.
4.
5.
6.
7.
Prime carburetor. Make certain priming lever is
down when finished.
Set hand choke as required by temperature.
Engage crank with crank dog.
Position crank handle at
7
o’clock.
Pull crank with hard, steady pull to
12
o’clock.
See that oil pressure is at least
20
psi.
Readjust choke as engine warms up.
ENGINE SHUT-DOWN
Disconnect as much load as practical from the engine
before shut-down. Stop engines having momentary-
contact Stop switches by holding switch to Stop
position until engine stops completely. Releasing
switch before engine isfullystopped will allow engine
to continue to run.
APPLYING THE LOAD
Apply the load for new and reconditioned engines in
four steps. Wait
30
minutes between each step.
Maximum end thrust on the main bearingsshould not
exceed
1000
pounds.
INSPECTION
Check for alignment of engine and load. Misalign-
ment will cause excessive vibration and bearing wear.
Make
a
visual inspection of the entire installation.
OPERATION WITH
GAS-GAS0
CAR-
BURETORS
Gas-gas0 carburetors installed at the factory are
adjusted with
1000
BTU natural gas. Readjust the
carburetor when using gas of a different BTU rating.
Readjust the carburetor when operating above
2500
feet for best fuel/air mixture. Derate engine power
4
percent for each
1000
foot increase in altitude above
1000
feet from sea level. Make necessary adjustments
only after checking engine performance.
CHANGING TO GASOLINE
Use the following procedure to change from gas to
gasoline:
1.
Close gas supply shut-off valve.
2.
Open gasoline supply shut-off valve.
3.
Unlock optional electric choke.
4. Start engine; follow normal procedure.
CHANGING TO GAS
Use the following procedure to change from gasoline
to gas:
1.
Close gasoline supply shut-off valve.
2.
Open gas supply shut-off valve (on the initial start
only, operatethe primerto forceair from the line).
3.
Open manual choke (optional electric choke held
open by lock wire inserted through hole in choke
shaft). Choking not required. Starting at low
temperatures may be aided by pressing priming
button on Algas regulator.
4.
Start engine; follow normal procedure.
HIGH TEMPERATURES
1.
See that nothing obstructs air flow to and from
engine.
2.
Keep cooling fins clean. See that air housingsare
properly installed and undamaged.
3.
Keep ignition timing properly adjusted.
4.
Be sure fuel-air mixture gives best operation.
LOW TEMPERATURES
1.
2.
3.
4.
Use proper SAE
No.
oil for temperature con-
ditions. Change oil only when warm from run-
ning. If an unexpected temperature drop occurs,
move engine to a warm location, or apply
flameless heat directly to cran kcase until oil flows
freely.
Use fresh, regular (not “premium” type) gasoline.
Protect against moisture condensation. Below
0”
F,
open carburetor main jet oneadditional turn.
Keep breaker points and spark plugs clean and
properly adjusted. Keep batteries
in
a well-
charged condition.
Partially restrict flow of cooling air. However, use
care to avoid overheating.
10
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by any means, is strictly prohibited.
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