Miller Electric

Welding Discussion Forums

Home » Resources » Communities » Welding Discussion Forums

  • If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.


Announcement Module
No announcement yet.

Big 40 Problem

Page Title Module
Move Remove Collapse
Conversation Detail Module
  • Filter
  • Time
  • Show
Clear All
new posts

  • Big 40 Problem

    Ive got an older Big 40, gas engine. The engine runs great, but after sitting without being used for quite some time, it doesnt weld. If I turn the Fine Current Adjustment up to 100%, it will weld, but not anywhere else on the dial. I would appreciate any advice. Thanks

  • #2
    It could be the contacts on the switches are corroded some after sitting so long. With the engine shut off, try moving each switch thru the full range Several times each, 8 or 9 times at least maybe more. This may knock off some of the corrosion and make contact so it can work again. I've had this happen before on welders left outside for extended periods, and this method worked for me. Won't hurt to give it a try.


    • #3
      Thanks That worked a couple of years ago but doesnt seem to now, but Ill keep trying


      Special Offers: See the latest Miller deals and promotions.