First thing I would check are your battery connections, especially the grounds for a solid connection. My ground is hooked directly to the lower starter mounting bolt. And of course with a 6V heavy gauge cables are a must. Starters aren't cheap so maybe a bolter in your area can give you a lead on somewhere to get it checked out/rebuilt. Bearing/bushings could be worn causing armature to drag, brushes could need replacement.
Last edited by Forty9; 12/11/2012 10:51 AM.