Just want to say that's a real testiment to the machine and to the person doing the maintance to get 4200 hrs out of a combine.Did you have the machine from newIJ
Remove the whole valve assembly, slide the nut back on the lines and clamp a piece of 3_8 fuel line hose in place of it. Or run a safe jumper wire from the positive starter post. Just remember to disconnect to shut down. Good idea to repair this later - could save your engine (has helped me in the past).