Case 580B won't crank

[tomttomtom]

My cousin has this tractor. It"s been sitting under
a pecan tree for years. He"s trying to get it
started. It has a new battery and fuilds. It turns
over but just won"t crank. Fuel seems to be getting
thru..... Does this thing use a glow plug? How does
it fire? Where is it? All I see is a SENDER UNIT?
Can anyone help???
Thanks,
Thomas