I have a Kubota L2500 (600 hours) that will not start now due to a fuel problem. For the past month my wife would tell me the tractor would kill on her but when I would try it later it would start. However the other day when I was cutting grass the power dropped as if fuel was being cut off. It shut off a couple of times, restarted and continued cutting but the same thing happened. This time it started but would only idle no matter how much you pumped the accelerator, then it would not start. Had plenty of fuel, cracked the lines going into the injectors and did not have as much flow as I thought it should have from the first two and had no fuel from the 3rd injector line. I drained the tank and flushed it, put on a new fuel filter, pulled, took apart and cleaned the injectors and the hard line to them and inspected and flushed all hoses on the fuel system. Put everything back and still no start. I took the hard line off the injectors and cranked. The first 2 ports off the injection pump would put out fuel about 1/4" (seemed low but not sure) and the 3rd port would not put out fuel at all. So I am assuming the problem is this pump. Is this a part that is serviceable, maybe has trash that got past the fuel filter plugging it? Or is there something else i am overlooking?