MF 384S (orchard) fuel issues??

[camelot]

So I parked my Massey 384S yesterday and went to move it today and it will not start. I figured bad fuel so I pump fuel through the filter and injector pump without any issues. I did notice there is no smoke when turning over and I unhooked 1 injector and there is no fuel pumping. It has a cable shut off on the injector pump.
I'm baffled, could it be an electrical issue? It was running fine yesterday

Thanks

 

[camelot]

Today I tapped the side of the injector pump and she started but as I pulled the shut off knob out I couldn't start it again. I have it narrowed down to the mechanical shut off on the injector pump. Now the question is how to fix it? It seems I just need to pull out the shut off knob slowly and then it will not stick