Lincoln Electric IMt10143 MARQUETTE AutoPro 140_180 - Manual (Page 20)

B-11 OPERATION B-11
1. Loosen the THUMB SCREW, and disconnect 100L
Gun.
2. Insert K3295-1 100SG spool gun into the brass
block and tighten the THUMB SCREW.
3. Depress Gun selector SWITCH to Spool Gun posi-
tion. (See Figure B.20 and B.21)
4. Connect a bottle of 100% Argon shielding Gas per
previous section.
5. Follow the MIG welding steps in the previous sec-
tion.
FIGURE B.20
6. Turn machine on and make weld per recommended
settings on Procedure Decal inside machine door.
AUTOPRO™ (140/180 MODELS)
SETTING UP AND MAKING A ALUMINUM WELD USING SPOOL GUN
FIGURE B.21
(Location of Selector Switch and Thumb Screw)
100SG
SWITCH
THUMB SCREW FOR
CONNECTING THE GUN.
100L