every time I engage the pto or try to move the tractor in any gear it dies. If I just start the tractor and let it run there are not any problems and it runs just fine. any one have an idea on this issue:
Sounds like the seat safety switch is not working properly. Checking that when you sit on the seat it pushes the switch in all the way. If it does, then unhook the electrical connection going to the switch and use a piece of wire in the plug to bypass the switch. Then try moving the tractor to see if this solves the problem. If it does, then probably the switch has gone bad and needs replacing.