I ordered both the on/off switch and thermal fuse. As I wasn't sure which was the problem. The thermal fuse was the issue and the installation was as easy as it gets. Literally, 5 minutes start to finish. The "how-to" videos associated with the repair are always helpful. In addition, the 62% likelihood of it being the problem was accurate. I just installed the new start switch as well as it was inexpensive and couldn't hurt.