[QUOTE=ArchaicArcane;6621745]Are you sure it needs a new motor? There are lots of things you can do to service one of those little motors - like changing the brushes, filling the grease tubes, cleaning the commutator, sometimes even just removing old oil that was put in that shouldn't have been. Even wiring can be addressed.
I had it serviced last year and it helped a little, but it overheats very quickly whenever I use it. My service guy is good and I trust his judgement. He thought a new motor was the answer. I don't remember if all was rewired, but it does have a new foot pedal and wiring to the machine. I used that baby a lot and wouldn't be surprised if the previous owner did also. It's a sweet machine! It is 68 years old, it wouldn't surprise me to need a new motor. It's the original that's on there.