I'm looking at buying a used Toro Time Cutter 1638z zero turn mower. Cosmetically in very good shape and has a new 16hp Kohler motor. Dealer is asking $1200. Is this a reliable machine? This will be for just routine residential use for a half acre corner lot. Have had an old Toro 260 series tractor that has served me well but its time for something a little more updated.