I had a 1050 several years ago and as I remember the fuel system was gravity fed..no fuel pump. At the location where the fuel filter is, there is a fuel shut off and three bleeder screws. With the shut off in the open position open the screw to the left to bleed the line from the tank to the filter housing until you get fuel with no air bubbles then close the screw. Next open the center screw which will fill the filter housing with fuel pushing out the air. When you get fuel and no air bubbles close that screw. There should be a bleeder screw at the injector pump which also needs to be bled. After bleeding out these locations the engine should be getting fuel with no air in the system and should start. Let us know.