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STOPPING THE ENGINE
1. Remove all welding and generator power loads
and let the engine cool by running it for several
minutes at low idle.
2. Place the IGNITION switch in the OFF position.
When an engine is started for the first time, some of the
oil will be needed to fill the passages of the lubricating
system. Therefore, on initial starting, run the engine for
about five minutes and then stop the engine and
recheck the oil. If the level is down, fill to the full mark
again.
The engine controls were properly set at the factory
and should require no adjusting when received.
At the end of each day’s welding, drain accumulated
dirt and water from the sediment bowl under the fuel
tank and from the fuel filter per instructions in the
engine manufacturer’s operating manual. Refill the
fuel tank to minimize moisture condensation in the
tank. Also, running out of fuel tends to draw dirt into the
fuel system. Check the crankcase oil level.
In diesel engines, if the fuel supply is cut off or runs out
while the fuel pump is operating, air may be entrapped
in the fuel distribution system. See “How to Eliminate
Air From the Fuel System” in the
Maintenance
section.
COLD WEATHER STARTING
When temperatures are between 10
o
F (-12
o
C) and
freezing, use the standard Thermostart feature. Follow
the instructions on the nameplate and in the engine
manual shipped with the welder. With a fully charged
battery and the proper weight oil, the engine should
start satisfactorily even when the air temperature is
down to about 0
o
F (-18°C).
If the engine is frequently started below 10
o
F (-12°C),
you may want to remove the “Thermostart” and install
the optional ether starter kit. Installation and operating
instructions are included in the kit. Use ether starting
only when required because excessive use shortens
engine life.
It is important to follow the engine manufacturer’s rec-
ommendations for oil and fuel to obtain satisfactory
cold weather performance. Consult the engine manu-
al and the
Maintenance
section of this manual.
BREAK-IN PERIOD
Any engine will use a small amount of oil during its
break-in period. For the diesel engine on the SA-250,
break-in is about 200 running hours.
Check the oil twice a day during break-in. Change the
oil and oil filter cartridge after the first 25 hours of oper-
ation. Also change the fuel filter cartridge. For more
details, see the
Maintenance
section of this manual.
During break-in, subject the SA-250 to only moderate
loads. Avoid long periods running at idle. Before stop-
ping the engine, remove all loads and allow the engine
to cool several minutes.
OPERATION
B-9 B-9
SA-250
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CAUTION