Slide the spool onto the holder so it unrolls from the bottom. Feed the wire through the guide and into the drive rolls, ensuring the groove on the roller matches your wire diameter (e.g., 0.8mm).

Current is usually adjusted via a stepped switch, while wire feed speed is managed by a single variable knob. 3. Setup & Maintenance Tips POWER MIG® 180 Dual MIG Welder - Lincoln Electric

If you can't find the specific PDF, don't worry. Operating a transformer MIG welder like this is fairly universal. Here is a cheat sheet to get you started:

The manual provides a troubleshooting matrix for exactly these scenarios. It also stresses that you should always cut the wire to a sharp point (about 10mm protruding) after each weld to improve arc starting.

| Item | CEM Part (typical) | Equivalent | |------|--------------------|------------| | Contact tip 0.8 mm | CEM-M8 | MB15/M6 thread | | Gas nozzle | CEM-NZ15 | 15 mm bore | | Liner (3 m) | CEM-L3S | Steel, 0.8-1.0 mm | | Drive roller (0.8/0.9) | CEM-R2 | V-groove / knurled |

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