I took my Z in for service this week while I was in school. When I returned they told me they drained all my hydro fluid and replaced it because it smelled burnt. Now I dont have a problem with the service. What I do have a problem with is the fact that it was burnt after only 400 hrs. I have been telling the dealer for over 6 months that it didnt respond like it should when turning. I always got the same answer. Which didnt fix the problem and now he finds that the fluid is burnt. What would cause this after only a short period of time? Do I have hydro problems in my pumps? And I still havnt had any luck with the problem I told you about earlier. The one about it cutting off at the top of a hill. The only other dealer close by is this guys cousin. So I am leary about carrying it to him. I love my Exmark. All I want is for it to perform and last. I just have a couple of small problems preventing it from running properly.