I have a pm310, approximately ten years old. The previous owner had blown the engine with about 500 hours on it, so I had the dealer put a new 27hp Kohler engine it. The machine now has 940 hours (approx) and is in really good shape. Only issues I've had, I replaced the electric pto clutch in the last two months and had to weld the frame going to the front caster, as it had cracked. I would like to sell and get a zero turn, so any info on it's value would be appreciated.