My son went through the motor on my 201-2 -- they were so old they crackled and crumpled when they were bent --that had to go! So, he pulled the motor (and they can be difficult to get off the machine), removed the wrapping from the coils, re-wrapped the coils with glass cloth tape, replaced the leads and the grommets (spelling?), soldered all the leads back, re-assembled the motor and it's terriffic!
Jeanette