How to fix erratic wire feed on Miller Welding Accessories?
- WWilliam PriceAug 14, 2025
To address erratic wire feed or lack of wire speed control, try the following: change to the correct size contact tip or liner, and clear any obstruction in the contact tip or liner. Readjust the drive roll pressure and change to the correct size drive roll. Clean or replace a dirty or worn drive roll, and readjust the spool brake pressure. Check the resistance and connections of the Wire Speed control R4, replacing it if necessary. Also, check the motor B2, replacing it if needed, and check control cords for continuity, repairing or replacing if necessary.