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the top piece of metal and the arc is
directed through the hole to penetrate
into the bottom piece. The puddle is
allowed to fill up the hole leaving a spot
weld that is smooth and flush with the
surface of the top piece.
Select the wire diameter, heat setting, and
tune in the wire speed as if you were weld-
ing the same thickness material with a con-
tinuous bead.
3. The LAP SPOT METHOD directs the weld-
ing arc to penetrate the bottom and top
pieces, at the same time, right along each
side of the lap joint seam.
Select the wire diameter, heat setting, and
tune in the wire speed as if you were weld-
ing the same thickness material with a con-
tinuous bead.
SPOT WELDING INSTRUCTIONS
1. Select the wire diameter and heat setting
recommended above for the method of
spot welding you intend to use.
2. Tune in the wire speed as if you were
going to make a continuous weld.
3. Hold the nozzle piece completely perpen-
dicular to and about 1/4 inch off the work
piece.
4. Pull the trigger on the gun and release it
when it appears that the desired penetra-
tion has been achieved.
5. Make practice spot welds on scrap metal,
varying the length of time you hold the
trigger, until a desired spot weld is made.
6. Make spot welds on the actual work piece
at desired locations.
GENERAL
This welder has been engineered to give
many years of trouble-free service providing
that a few very simple steps are taken to
properly maintain it.
1. Keep the wire drive compartment lid
closed at all times unless the wire needs
to be changed or the drive tension needs
adjusting.
2. Keep all consumables (contact tips, nozzles,
and gun liner) clean and replace when nec-
essary. See CONSUMABLE MAINTENANCE
and TROUBLESHOOTING later in this sec-
tion for detailed information.
3. Replace power cord, ground cable,
ground clamp, or gun assembly when
damaged or worn.
4. Periodically clean dust, dirt, grease, etc.
from your welder. Every six months, or as
necessary, remove the side panels from
the welder and air-blow any dust and
dirt that may have accumulated inside
the welder.
WARNING
Electric shock can kill! To reduce the risk of
electric shock, always unplug the welder
from its ac power source before removing
side panels.
CONSUMABLE MAINTENANCE
IT IS VERY IMPORTANT TO MAINTAIN THE
CONSUMABLES TO AVOID THE NEED FOR
PREMATURE REPLACEMENT OF THE GUN
ASSEMBLY.
The GUN LINER is intended to provide an
unrestricted path for the welding wire to flow
through the gun assembly. Over time the
liner will accumulate dust, dirt, and other
debris. Replacement is necessary when these
accumulations begin to restrict the free flow
of wire through the gun assembly.
MAINTAINING THE CONTACT TIP
The purpose of the CONTACT TIP is to trans-
fer welding current to the welding wire while
allowing the wire to pass through it smoothly.
Always use a contact tip stamped with the
same diameter as the wire it will be used with.
MAINTENANCE
