Might be late to the party, but...
I suspect you might have a fuel blockage. Check that your line from the fuel tank isn't pinched: I once managed to get a stick jammed up underneath on the tank side that wedged the line closed against the frame. Also might want to disconnect that line to the filter and blow back through it (loosen up fuel cap): this is how I found out my line was pinched- hauled my portable air tank out and blew back and got nothing but resistance!
If you get it to run momentarily and it then shuts back off it could be that there's debris inside the fuel tank that is being sucked up against the outlet (and it'll drift back away when the engine shuts back off- loss of vacuum to pull the debris against the outlet). I also had this situation, but it was due to an ice pellet! (looking back, that happened around 100 hrs, I think it was the result of a crappy fuel cap (allowing water in; I was getting water-in-fuel fairly regularly, and ONLY on this tractor [not on any of my other diesels- all using fuel from my on-site tank])- dealer got me a new one, one that was slightly different [suspect design change]- first cap's key had cuts on one side only and it felt really cheap; second cap's key has cuts on both sides and feels a lot better).
