I have two Toro Zero Turns.....both with busted cases due to mis-torqued case halves. One I repaired and am using, the other is a parts machine now....was the neighbors, but he blew it up when it ran out of oil without him noticing in time. A search shows a number of folks had the same problem.......it was a factory fk up, but they convinced me since they haven't chased down any owners to correct the error. I'm done with them.