My B2650 will start just fine, I can increase RPM with no issues, hydraulics work just fine, however, if i engage the PTO or press the pedal forward/backward, even slightly it will stall out. I thought perhaps it was the seat safety switch, so I jumped it with no luck, even zip tied the switch itself, and ohmed it out, everything checked out. I did replace the diesel as it didn't get used much this winter, replaced the fuel filter. Replaced the safety switch, and still no luck. I'm at a loss. Anyone have any suggestions on what to try next?