I have a 3000 series cub, not sure which model but it has the 22 or 23 hp. kohler motor on it. i can not get it to turn over with the key, motor is not locked up, have power at the key till i turn it all the way for start position then nothing happens. seat saftey switch is jumped out, brake pedal switch is made, whats the other swich up under the tractor about mid-way for? I see the seat swich and the brake switch but dont know what the 3 rd switch is for. What all can i check for ?