I was using the backhoe- L39 tractor and the GST light started flashing on the control panel. Error 61 through 66 starter flashing on panel, along with 1 7 8 NG, 2 9 10 NG, 3 4 11 NG, 5 6 12 NG, 1 - - - 6 NG, 3579 NG. The hydraulics still work, I used the backhoe to pull the tractor to a good...