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TROUBLESHOOTING & REPAIR
F-13 F-13
POWER MIG 350MP
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely,
contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
1-888-935-3877.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
PUSH PULL WIRE FEEDING PROBLEMS
During welding the wire continues to
burn back to the tip.
1. Check to see that the spindle
brake is not set too tight. There
should be an aluminum spacer
behind the spindle brake. Refer
to the push-pull connection kit for
this spacer.
2. Power Mig 350MP drive rolls set
too tight. The tension arm should
be set at 1 to 1-1/2.
3. Push-pull torch drive rolls set too
tight. Refer to owners manual for
proper setting.
4. If pulse welding the trim value
may be set too high.
5. Clean or replace contact tip.
6. If problem continues after a thru e
are checked then the Stall Factor
Number needs to be increased.
See Stall Factor Number
Adjustment.
CAUTION
Wire bird nests while welding. 1. Torch liner conduit not inserted all
the way so that it is touching the
inner black plastic wire guide.
2. Inner black plastic wire guide is
worn out. Replace guide.
3. Push-pull torch drive rolls set too
tight. Refer to owners manual for
proper setting.
4. If problem continues after a thru c
are checked then lower your Stall
Factor Number. See Stall
Factor Number Adjustment.
Observe Safety Guidelines
detailed in the beginning of this manual.
TROUBLESHOOTING GUIDE