Proud owner of a b6200 for 2 weeks now Had trouble yesterday, tractor would turn over once click and not start. Took the battery to get tested and charged. Brought it back and hooked it up, same thing. After reading the forums here I decided to check the ground cable, it was rusted and corroded around the wire clamp, cleaned it put it back on and it turned over perfectly. When I turned the key before and it would turn over once all the lights would go dim like it did not have enough power. That is what made me take the battery to get tested. Someone in one of the previous post had suggested checking ground cable.. Thought I would post this just to say thanks for all the great info on this site.