If your comfortable taking the starter apart you should have no trouble changing the starter drive. The starter drive is the part that engages the flywheel. Make sure you purchase a good quality drive. While you have it apart check the brushes and bushings in the starter also. Don
If you do a search I think Denny Graham has pictures of his starter when he had it apart and rebuilt it.

Last edited by don stocker; 06/02/2011 2:38 PM. Reason: added line