That would also help those surfing for specific problem info.
How about a sticky at the top of each welder brand.
like the one at the top of Lincoln that is no help.
As a repairman I like to know Make, model. serial number, code/stock number.
And complaint. (whats not working). It helps us pull up the correct diagrams with out having to ask for information. And we can give better answers.
Some models were made over many years with many changes.
That would also help those surfing for specific problem info.