How Do I Find the Code Number on my Machine?

Finding the Code Number

There are normally three ways to identify a Lincoln Electric welder:

  1. Product Number – letter "K" or "U" followed by numbers and/or letters. For example: K2175-1
  2. Code Number – 4 to 5 digit number. For example: 10859
  3. Serial Number – 11 digit alphanumeric. For example: U1060512345

When you register your product on, you need to enter the code number of the welder. A common mistake is to enter the product number.

The code number can be found on the nameplate of the welder, located either on the front or back of the unit.