ASSEMBL
Y INSTR
UCTIONS
25
MIG 140 INVERTER WELDER 058-9305-6
5. Setting the wire spool tension:
a. Turn the wire spool clockwise with one hand.
b. Increase the spool tension by tightening the wing nut while turning the spool. Turn the
spool until turning becomes harder.
c. Stop tightening the wing nut. Repeat the steps a
-
c until proper spool tension is achieved.
Note: If high tension is applied to the wire spool, the wire slips off the drive roll or the wire gets
stuck. If less tension is applied, the wire spool unspools itself when the trigger is released. Readjust
the spool tension using the wing nut if the tension is high or low.
9. Disconnect the welder from the power source, and remove the leading end of the wire from
the spool.
10. Cut off any bent portion of the wire using a wire cutter.
11. Loosen the tension adjusting knob and lift up the drive tension arm off the drive roll.
12. Insert about 6" of the wire into the inlet guide tube, across the drive roll and into the MIG gun
assembly.
13. Align the wire with the correct groove in the drive roll.
14. Fix the drive tension arm above the drive roll.
15. Tighten the drive tension adjusting knob until the tension roller applies enough force on the
wire to prevent it from slipping out of the drive roll.
16. Plug in and turn the welder ON. Set the welding voltage control to the voltage setting
recommended for the gauge of the work piece. Refer to the set up chart on the back side of
the wire drive compartment.
17. Set the wire speed control
.
Straighten the MIG gun cable and pull the trigger in the gun
handle to feed the wire through the torch assembly
.
18. Turn the power switch to the OFF position. Select a contact tip having the same diameter as
the wire being used
.
Note: Due to inherent variances in flux
-
cored welding wire, it is necessary to use a contact tip larger
than the wire.
19. Slide the contact tip over the wire, thread the contact tip into the end of the gun and tighten
securely.
20. Install the nozzle on the gun assembly, and use anti
-
spatter spray or gel to keep the spatter
from sticking to the inside of the nozzle.
21. Cut off the excess wire that extends past the nozzle leaving 1/4" of the wire to stick out.
22. Turn the power switch ON.