where can i find an exploded repair diagram on line?

The transaxle in your Craftsman tractor was made by Peerless
It is Model 930-057

Copy and paste this link into your address bar:

http://www3.sears.com/

Enter the transaxle model number into the search box and click the Go button. There you will find the pasts list and a diagram.
Transaxles are complicated even with the proper service manuals.

Rick
October 2006