I have a 52 inch walk behind scag that i purchased in July of 2004 and on thursday it blew up . Shot oil out all over the place at the bottom. Its a kohler 18 hp. It has a 2 year warranty that is not up for a month but the dealer took it apart and said "it looks like it was run low on oil" I just changed the oil a month ago and there is no way it should been low. They said the kohler rep would be by on Monday and he makes the final decision. Can they get away with not replacing it like that? What the f is the warranty 4? Thanks for any response.