I am in the market for a zero turn mower and have looked at several brands, but just found a dealer with a used Toro Z that appears to be in good shape. It has a 25 hp Kohler engine with 1500 hrs on it. He is asking $4000 for the unit. My question is how long should this mower and motor last before needing serious work done assuming normal maintenance? Also is this a decent price?. I would probably not use this mower more than about 50 hrs a year tops. Was wondering if this might be the way to go or should I just bite the bulllet and go new? Thanks for any help.