It seems as though that tractor model did not have a lift pump, in the line from the tank, to the injector pump. Once you have fuel from the tank to the injector pump there are usually two bleed screws, upper and lower,on the injector pump. These need air free fuel flowing from them, lower first, close bleed screw, then upper, close bleed screw. Loosen the injector feed pipe at #1 injector and attempt to start the engine with the starter. When all the air is pumped out of the injector line, the tractor should start-on #1 at first, then all four.
If many attempts have been made to start , before doing the above, I have found it sometimes needs all the injectors removed, the engine spun over , just to clear the amassed fuel/guck. With injectors replaced and the lines bled, it usually starts right away. This is how I start my relatives 434,I think it is basically the same as yours.
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Today's Featured Article - Women and Tractors - Tractor Engine Repair - by Teri Burkholder. One of the great things about working on a tractor engine with your other half is that you know what he is thinking of at all times and can anticipate his every move and his next thought of what he will do. With Ben, anyway, I can tell! He'll be busy working and I’m handing him tools and he says, "give me that..." and I’ve already got it in his hand or "hand me that....."and I’ve got the portable light right where he needed it placed to see. "Run in the house and get me a...."as I open th
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