From a pretty weird (to me at least) source called "e replacement parts" that seems to sell a VERY wide variety of things. Here is the page for the one I needed. I got the "1156750" part number from the schematics.

http://www.ereplacementparts.com/kick-lever-p-1491639.html

Mikesreelrepair.com is another good site (especially for finding schematics) but I had problems trying to place an order with them.