Possible causes include:


  • Wrong size gun tip. The contact tip size and wire size must be the same.
  • Wire liner is too far from drive deck rollers. The wire liner should be almost, but not quite touching the drive deck rollers.
  • Liner is clogged or damaged and should be replaced
  • Feed roller is worn and should be replace.
  • Tension is too loose. Slowly tighten the tension screw.