I am looking at a Lazer Z w/22hp Kohler. Model # LZ22KC532 Serial #165281 , Kohler eng# CH22S. This mower has 740 hours but was used by a city. All of the bearings are out in the blade spindles. My question is, what is a reasonable price for this mower given that I am going to have to repair all the bearings in the spindles? I have never owned an Exmark but I am a very competent mechanic and will fix the problems myself. About what will parts cost? I ran the mower and it runs well. Last "zero turn" mower I had was an old Grasshopper 1844D and ths hydro system on these was a NIGHTMARE - are these Exmark hydro systems reliable? Is this 22hp Kohler engine a good engine without particular widespread known problems? Thanks for any help.