I have a John Deere 250 Skid Steer, unsure of year hence pin number in title. Here is my problem, when i sit in the seat, start the machine and hook up the seat belt and disengage parking break all lights go out in the dash as normal. The hydraulic system and parking break are locked up. I can move foot pedals for bucket and boom but nothing happens. When i reengage parking break i cannot move pedals as normal. I checked all fuses and seat belt and seat switches, all apear to be fine. Could the problem be the parking break switch or something else. Should i order a switch or could anyone lend me some additional advice. I check my email often could someone please help by sending me an email at [email protected] or responding on this site! thank you any help is greatly appreciated.