1) make sure that fuel tank is near full and that fuel is running freely to the injection pump.
2) set throttle to high motor RPM speed
3) there should be a bleed valve on the injection pump, open it and let the air and fuel drain until there is no more air. Tighten the valve back up.
4) crack the injection lines to the injector at the injector (not near the pump)
5) if there is a decompression knob pull it out
6) crank the engine in short bursts 30 seconds and then wait about a minute to let the starter cool off
7) watch the injector pipe and notice if any air bubbles are coming out. When you don’t see any more bubbles then tighten up the nut on the line.
8) repeat for all injectors until all are tightened back
9) try to start the tractor but don’t burn out your starter.
10) repeat steps 4 to 9 until tractor is starting.