Lincoln Welding Tools - Page 6 - Recent Questions, Troubleshooting & Support

It is likely a hole in your muffler.

Time to buy a new one

The leads are soldered to the switch internally. I performed services like that for 18+ years and if you're not familiar with using a brazing tip and silver solder, I suggest you take it to a professional. It won't be easy and you run the risk of damaging your machine.

If you're talking about an AC 225 "Cracker box", the cord attached directly to the power switch and grounds directly to the chassis of the machine. Take care when removing the cover screws as not all need to be removed. There are one 5/16" screw in the recessed area at the back of the machine, two directly under the recessed area, and 2-3 3/8" bolts at the bottom rear. When those are removed, the machine will tilt front/backwards... That's normal. It's been a while since I opened one of these up. Hope I remembered the screw positions correctly.
When you remove the rear cover, you'll see the switch and how the old cord is attached. Good luck.

Contact me with the code number and I'll see if I have that information in PDF format.

[email protected]

The green wire gets attached to the frame .

You will need a 50 amp circuit for that machine for the supply. If you are talking about the wiring inside the machine, then you will need to take it to an authorized repair facility.

Check if one of your polarity is not diconected inside the welder, check fuses if any

I need more. But this is a machine worth fixing and if time is money take it to the shop.

Make sure the ground clamp has a good connection to both the work piece and to the welder Sometimes the welder connection is overlooked.

Check the dial indicator. Sometimes if someone changes the amps while welding, there will be a break in the coil. It will work at a different setting as long as you are away from the break.

Maybe you can get lucky like I did . Some times the acr volt selector switch gets corrosion in it and wont let the circuit board know to send power to the wire feed motor. You can cycle this arc volt. switch in my case it is the a,b,c,d,e, switch back and fourth a few times and this will brake the corrosion and your wire might feed again as mine did . This corrosion build up happens from not using and or sollecting the switch much usually on a welder at hm that gets very little use. it is common good luck .

There is something wrong with the auto load sensing switch which is part of the generator. That is the sensor that detects when current load from the generator drops as in when you strike an arc or turn on a power tool and cranks the throttle to full power. It is obviously working on manual because the manual switch is cranking the revs up so the solenoid that operates the throttle is ok. My advice is to take it to a service centre that deals in welder/generator sets as you are playing with dangerous voltages and may possibly damage the machine by tinkering with it or fry yourself (nasty)

Have you got the TIG torch and earth lead pluged in the wrong way around ? Should the torch be negative and earth positive ?

Sounds like your CT or CT board is bad. CT stands for Current Transformer. A CT senses an increase in voltage draw or current, which will trigger the idle solenoid.

Go to Lincoln welders.com. They will have parts breakdowns and diagrams.

Believe it or not call Wallmart, they just might have the tires you need. Or try one of the tire .com places, just enter your tire and rim size, most the time they will be tax free with no shipping charge. automotivewarehouse.com might carry them. Hope this helps, please post solved on fixya.com. So I get credit for a solved problem if it does.