Morbark 2400 4BT won't stay running

[Jason Bex]

I just bought a used Morbark 2400 with 1160 hrs. Guy said everything worked great and no problems. Ran for 2 hours and now it will only run if you leave the key in the start position. OR if you go to the back of the chipper and wire open or hold the Manual fuel shut off lever. Morbark dealer says he has to see it in order to help diagnose....Hoping you guys have an idea. I'm thinking Murphy switch, fuel shut off solenoid or some other solenoid commanding it to close off fuel. Oil level and water are both correct and full. Thanks for any help