I have the drive sheave out and I wonder since it slipped right off if there should be some retaining ring. Would love if someone had a manual or knew where one was online as a pdf. Basically, the key us banged up because either it was off balance from ruined plastic slides or the lack of retaining ring. I'd like to rebuild it but I wouldn't know where to get parts. Its a 70's era machine. Got pics but cant post them on forum .
