12
INSTALLING THE FEET
Locate the two black plastic feet for the
welder. (The front feet are slightly larger than
the back feet.)
1. Lay the welder on its side.
2. Align the holes of the front feet with the
front screw holes on the bottom of the
welder. The curved face of the front feet
should face the front of the welder.
3. Insert the two Phillips head screws (includ-
ed in the accessories bag) into the holes.
4. With a Phillips head screwdriver, securely
tighten both screws.
5. Align the holes of the back feet with the
rear screw holes on the bottom of the
welder. The curved face of the back feet
should face the rear of the welder.
6. Insert the two Phillips head screws
(included in the accessories bag) into the
holes.
7. With a Phillips head screwdriver, securely
tighten both screws. (see Figure 3)
SELECTING SHIELDING GAS
The shielding gas plays an extremely impor-
tant role in the MIG welding process. It is criti-
cal that the molten weld puddle be shielded
from the atmosphere. The shielding gas cre-
ates a protective pocket around the weld
puddle which keeps impurities in the air from
contaminating the weld. Inadequate shield-
ing will result in porous, brittle welds.
Although there are many gasses and gas mix-
tures available for MIG welding, the following
recommendations are based on the electrical
output characteristics and metal thickness
capabilities of this specific MIG welder.
Gas Selection For Steel Welding With Steel
Wire
For either mild or low carbon (High Strength
Structural) steel, use a gas mixture of 75%
Argon and 25% Carbon Dioxide. DO NOT USE
Argon gas concentrations higher than 75% on
steel. The result will be extremely poor penetra-
tion, porosity, and brittleness of weld.
This gas mixture helps to prevent burn
through and distortion on very thin steel yet
provides good penetration on thicker steel.
Its ability to minimize spatter results in clean,
smooth weld appearances. In addition, it pro-
vides good puddle control when welding ver-
tically or overhead.
Gas Selection For Stainless Steel Welding
The best shielding gas for stainless steel
welding is a mixture of 90% Helium, 7.5%
Argon, and 2.5% Carbon Dioxide. However,
the 100% Argon, can also be used, but an
increase in the area being heated by the arc
will be experienced causing slightly greater
distortion of the base metal.
Gas Selection For Steel Welding With
Silicon Bronze Wire
Use only pure Argon when welding steel with
Silicon-Bronze wire.
Gas Selection For Aluminium Welding with
Aluminium Wire
Use only pure Argon when welding
Aluminium.
INSTALL THE SHIELDING GAS
WARNING
IMPROPER HANDLING AND MAINTENANCE
OF COMPRESSED GAS CYLINDERS AND REG-
ULATORS CAN RESULT IN SERIOUS INJURY OR
DEATH! Always secure gas cylinders to the
welding cart, a wall, or other fixed support to
prevent the cylinder from falling over and rup-
Figure 3. Feet Installation
Figure 2. Handle Installation
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