I am wandering if anyone can help me identify my tractor it came with my house, the manuals left for it cover 12models 2000-5550 1965-1975. I fond the identification numbers and here is where my problem began mod#c5c12k prod#1l22b ser#c322163. and I know it does not necessarily mean much but the front has a decal that says 4500 however the sites all seem to say its a 1971 3000 but given the decal and pictures I've seen it does not seem right. I'm just trying to order the front hydraulic pump which says Cessna 245xx I think but part of the number is scratched off any help would be greatly appreciated. thanks mel