I've got a TG1860 diesel I keep in a barn at a rental property, and since my wife enjoys mowing she goes up there and mows around the barn, drive, tree rows, etc. I had used the 1860 a couple of times when she was push mowing just to be sure it was working fine.
Next time she goes up to mow I was doing something else, and she had that nice mower to do all the work! Comes back and says she mowed the whole thing with the push mower. The big mower would start, but when she went to back it out of the barn it would quit. It would start up right away, but do it again.
I went up there and started, backed out of the barn and mowed for a while. Put the mower back in the barn and came home and told it was working fine.
Next week, same song, second verse.
The third week she comes home and tells me she's figured it out. The barn has rock inside the door and is built up a few inches going into the barn. The 1860 is parked inside the big door but then turned left and parked parallel to the other big door. When she started it she had to turn the wheel to back out/down a bit to get out. She would get to a certain point in that maneuver and her weight would shift and the tractor would shut off.
Kind of comical when she explained it to me!