I was mulching up leaves and going in circles with my ZTR. All of the sudden my right rear wheel became non responsive. I moved the right lever back and forth and nothing. I heard a funny sound coming from the hydro pump,or motor. I checked the oil and that was ok. I check the lines and they were ok. Some thing really bad just happened to my right hand hydro didn't it?? Crap... thats all I need! Thank god I have my back up walk behind 52. But it ain't no ZTR. This every happen to anyone where it wasn't a big deal to fix?