If your Lincoln SA-200 welder is missing while running and you're sure there's no lack of fire, the issue could be related to fuel delivery, such as a clogged fuel filter or a faulty fuel pump. Additionally, check for ignition problems, such as worn spark plugs or a malfunctioning ignition coil. Electrical connections and grounds should also be inspected, as poor connections can lead to misfiring. Lastly, ensure that the carburetor is clean and properly adjusted, as improper air-fuel mixture can cause the welder to miss.
i have one and only a guess of about 1200 lbs.
It should be a 1947
The SA200 Lincoln arc welder with the serial number A183755 was manufactured in 1969. This model is identified by its serial number, which follows Lincoln Electric's dating system. The first two letters of the serial number indicate the production year.
Put number 4 cylinder closest to generator at tdc then turn mag by hand until #4 sparks turn mag back 1/4 turn and install