I bought this tractor the same year I bought this 200 acre property. I used it like a bulldozer. What I did to this tractor is a crime in all 50 states.
Aside from some chintzy controls, linkages, etc, this tractor has been an absolute beast. It has had relatively few problems so far. It is a heavy, sure footed and powerful tractor, more stable than my Kubota.
For a normal guy using this tractor as a normal guy should, it should be a twenty year machine or better. I bought it from Barry Clagg, OKC. Claggs are amazing before and after the sale. I can't say enough about them. I am buying a 4520R from them to replace this one, more for tax reasons than any other. I sold it today to a guy who was thrilled to get her.