Checking my manual, I found mention of the "V" Belt being a bit too tight. This belt can be loosen or tighten if needed but be very sure not to tighten it too tight. Tighten just until the belt does not slip NO MORE. Another thing you might check are the motor brushes. The brushes are what gets the electricity directed to your machine to make it run. If you remove the brushes to inspect them, make sure you note exactly how them came out of the machine. They need to go back in exactly how they came out. New brushes cost a lot less than a new motor. Hope this may help you get back to sewing.
I am not a mechanic, but I have received a lot of information from a featherweight manual by David McCallum, "The Featherweight 221 and I". And about any part for the featherweight can be found at 221parts.com
Last edited by Bobbielinks; 10-29-2016 at 07:46 AM.