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Old 07-05-2014, 10:03 AM
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smdubovsky smdubovsky is offline
 
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I have a MM 175. Any machine in this class only drives one of the drive wheels. Bigger machines drive both. Even w/ a new liner, if I twist my gun one way or the other it may not feed well. I've accepted thats just the way it is and will twist or flip it around if it slips until it works. I've always run VERY little spool tension - technically none at the moment because the nut fell off and went somewhere across the floor a few years ago. Though a 10# spool if operating at high wire speeds will unwind a bit w/o any tension.

Technically you're supposed to run as much tension on the drive as possible but still not birdcage when the gun nozzle is pressed up against something. The manual covers it. Through trial and error I've figured out the # on my tension adjustment that satisfies this. Heavier wire (0.030"+) is much easier to use/adjust than the fine stuff (0.023").
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