Northen MIG 135 Operator's Manual - page 11
Operating Instructions and Parts Manual
Northern Industrial Welder
9
MIG 135
MIG WELDER
on the outside edge of the wire spool
and bend it over to hold the wire in
place. Remove the spool of wire from
the spool hub by removing the drive
tensioning wing nut and hardware.
3.4. Removal of drive roller.
Use the “L” shaped hex wrench in the
accessory package, insert the wrench
into the set screw in the drive roller
and loosen by turning it counter-
clockwise. Pull the Drive Roller off of
the Drive Roller Shaft., see following
images
3.5 Based on the wire diameter select
the correct groove using the following
table:
Wire Diameter
Roller Groove
.024 inch
0.6
.030 inch
0.8
.035 inch
0.9
The drive roller has two wire size
grooves. When installing the drive
roller, the number stamped on the
drive roller for the wire size you are
using should face out. This identifies
the inside groove the wire will line up
with. Assemble the drive roller onto
the drive roller shaft and use the “L”
shaped hex wrench to tighten (turn
clockwise) it in place.
4. Install the wire
4.1 Selecting the wire
Available wire for this machine
Wire Type
Available
MIG wire
.023 inch
Yes
MIG wire
.030 inch
Yes
Flux core
wire .030 inch
Yes
Flux core
wire .035 inch
Yes
MIG wires available are: mild steel,
stainless steel or aluminum solid wire
and must be used with shielding gas.
Four or eight inch spools are
available.
NOTE:
• Burn through will occur if you
attempt to weld mild or stainless steel
thinner than 24 gauge.
• Remove all rusted wire, if the whole
spool is rusty discard it.