No fuel to injector line

[James57025]

I have a john deere 2700 which I just use for splitting wood every now and again and it usually starts up with a puff of smoke and then runs good after that but the last time I tried to start it I had no luck, I have checked all the lines leading up to the injection pump and they all have fuel, If I pump the priming pump enough I can hear fuel bypass too tank, but nothing is coming out of the top of the pump to the injection lines,

Any help would be appretiated