Lincoln Electric RED-D-ARC GX 300, Operator'S Manual, Page: 17 / 48

B-1 OPERATION B-1
SAFETY PRECAUTIONS
Do not attempt to use this equipment until you
have thoroughly read the engine manufacturer’s
manual supplied with your welder. It includes
important safety precautions, detailed engine
starting, operating and maintenance instructions,
and parts lists.
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ELECTRIC SHOCK can kill.
• Do not touch electrically live parts or
electrode with skin or wet clothing.
• Insulate yourself from work and
ground
• Always wear dry insulating gloves.
• Always operate the welder with the hinged door
closed and the side panels in place.
• Read carefully the Safety Precautions page
before operating this machine. Always follow
these and any other safety procedures included
in this manual and in the Engine Instruction
Manual.
GENERAL DESCRIPTION
The GX 300 is a gasoline engine powered DC multi-
process welding power source and 120 / 240 volt AC
power generator. The engine drives a generator that
supplies three phase power for the DC welding circuit
and single phase power for the AC auxiliary outlets.
The DC welding control system uses state of the art
Chopper Technology (CT tm) for superior welding per-
formance.
DESIGN FEATURES
FOR AUXILIARY POWER:
Start the engine and set the IDLER control switch to
the desired operating mode. Full power is available
regardless of the welding control settings providing no
welding current is being drawn.
The auxiliary power of the GX 300 consists of two 20
Amp-120 VAC (5-20R) duplex GFCI receptacles and
one 50 Amp 120/240 VAC (14-50R) receptacle. The
240 VAC receptacle can be split for single phase 120
VAC operation.
ENGINE OPERATION
Before Starting the Engine:
• Be sure the machine is on a level surface.
• Open top engine door and remove the engine oil
dipstick and wipe it with a clean cloth. Reinsert the
dipstick and check the level on the dipstick.
• Add oil (if necessary) to bring the level up to the full
mark. Do not overfill. Close engine door.
• See Engine Owner’s Manual for specific oil recom-
mendations.
ADD FUEL
GASOLINE can cause fire or
explosion.
• Stop engine when fueling.
• Do not smoke when fueling.
• Do not overfill tank.
• Avoid contact with skin or breathing of vapor.
• Keep sparks and flame away from tank.
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• Remove the fuel tank cap.
• Fill the tank approximately 4 inches (100mm) from
the top of the filler neck to allow for fuel expansion
(observe the fuel gauge while filling). DO NOT FILL
THE TANK TO THE POINT OF OVERFLOW.
• Replace the fuel cap and tighten securely.
• See Engine Owner’s Manual for specific fuel recom-
mendations.
GX 300
WARNING
WARNING