Often caused by a worn-out liner or incorrect drive roll tension .

: Features a multi-position switch (often 4 to 9 positions) to adjust welding power for different metal thicknesses.

The arc will be unstable and may melt the wire back into the contact tip. 5. Maintenance and Troubleshooting

If you need the official documentation, you can find the digital Solar 2150 Manual or the equivalent Campbell Hausfeld WF2150/WG2160 Manual , which covers very similar internal mechanics.

The is a vintage 110-amp MIG / wire-feed welder originally manufactured by Century. Because this line has long been discontinued, standard manufacturer landing pages no longer host a simple PDF download button. ⚡ How to Find the Manual & Parts