i was using the tractor the other day with the tractor shovel and got hung up on a tree stub i was moving.the tractor was on a pretty good incline and justshut down. i checked fuel which was 3/4 full ,checked spark,coolent all the simple stuff (i think?) checked fuel filter could blow air right through it.put the filter back on removed air per operators manual.couldn't get fuel to circulated again.took of seat and pulled the fuel pump fuel pump would run when i put jumpers on it out of the tank.when i put the pump and sensor back in the tank i checked the power at the pig tail comming from the tractor i had power to the tank sensor but not to the fuel pump.is there a fuel shut off thant i dont know about like in a car ? the tractor was running fine before i got on the incline btw the tractor has less than 50 hours on any ideas would help im about 100 miles away from a jd dealer thanks in advance andy