Product review (5 stars): Worked like a charm
Found a "how-to" video on youtube made by partsdirect that walked me through it.  I requires a bit of muscle and effort but watching the video before you order will give you the confidence that you can do it.  The only challenge was that I needed to borrow a socket wrench from a friend long enough to reach where it needed to go.  Still, even if I had to buy one from the store, I'd be dollars ahead of having someone come and do the repair for me.

It was great to see how it works.  It turned out that my chopper blade was also broken, so I had to order that and replace that before I could get it back up and running.  (A few more days of washing dishes by hand made me appreciate it all the more...)