2185 is a 2000 series. OK machine but not nearly as tough as the older tractors. Pretty much run them till they take a dump then sell the remaining good parts. CH18 Kohler in decent running condition is worth the asking price for that tractor. If you take care of a 2185 it will run a long time, how well that one has been treated, who knows? No Warranty Expressed or Implied.
This is the before and after on a 2185 that I picked up a couple years ago. Plan was to part it out but I patched it up and gave it to my BIL. It's still going and when it comes to maintenance he is a total A-Hole. Muffler was destroyed and I was not about to spring for a factory muffler for a tractor that I was going to give away so that's why the muffler is sticking out of the hood.