Thanks, but that was just a pdf of the owners manual.
I took it apart and figured it out. The Varimax has the push/pull tiller for forward and reverse. Inside the upper unit, attached to the end of the tiller is a ring shaped magnet. When the tiller is pushed/pulled the magnet moves and activates a magnetic switch on the board. The ring magnet is friction fit to the tiller...there's no glue that holds the magnet in place. Well, the ring magnet worked it's way off the tiller handle and slid all the way down the throttle, rheostat shaft. I'm going to reaffix the magnet, with some glue this time, put it all back together and see what happens.