The inst panel should show a diagnostic code for this problem, probably 13-05,13-06,13-07,or 14-02,14-03. to indicate that the fuel shutoff solenoid is not working. To check it, you must remove the operator seat. You can disconnect the wire connector. With an ohm meter, the reading between the white and black should read between .4-.5 ohms. If that doesn't seem to be the problem, it could be the shut down sequence in the computer, which might reset if you disconnect the battery for a few minutes and then reconnect. After that, it's off to high priced bobcat territory. Good luck
Goatman