I have a problem with sprag clutch from a oil additive I put in. Took it apart and it spun only one way.sprayed with brake cleaner andput it back in.
Am getting a motor wash to clean out additive as it coated every thing. It starts fine in warm weather, spins in cold weather Lately. New battery has helped alot.
A new clutch,Gasket etc.was about 480. from dealer and a week to get. Hope you have better luck.