I've had to move your post to the general section of the site due to this being a MTD product and not a Cub Cadet product.
I went to parts tree and I didn't know the year of your thrower so I used 2010. Here's a link to the parts break down. You can buy a new right angle drive or order parts for it.
http://www.partstree.com/parts/?lc=m...n=6901933G0002