I'm thinking about buying this used model 30137. From what I can gather, they were sold between 1992 and 2002. Is there a way to narrow it down more than a ten year spread? I have the serial number as well. The current owner is not the original owner but guesses it's about 8 years old. It has the Kohler 14 and recycler deck, seems to be in good shape, clean but not freshly pressurewashed so I could see that there were no leaks. Pulleys and spindles seemed good as were the belts. He did say that it would occasionally kick the belt when shifted into reverse but no problems other than that. Cold engine started on second pull. He's asking $1250. Any comments? Thanks.