My JD 425 is 23-24 years old, I think it was a 2001. With 915hrs on the clock it still runs like a champ. I bought it used many years ago. I changed the carb, replaced the fuel stop solenoid, put on rougher tires, and years later I replaced a lower radiator hose and all the plastic hood and sides. That's it, everyting else is factory, even the blade belt. I bought a new belt a few years back just in case, but have never installed it. To say it's a good tractor would be a huge disservice. I mow 5 acres of hills and pasture a week during the summer, so it's no garage queen, but it still looks and runs new.....when cleaned up, that is.