I have a good friend who bought a Yard Shark ZTR a few months ago and has had a lot of trouble with it. Now it has blown a pump out and yard shark is telling them that it is his fault for not changing the hydro filter after the first 10hrs. of use. I have never heard of that one before on a hydro filter. Engine filter yes but not a hydro. Now she is back to using her 1995 model dixie chopper that has had one hydro pump replaced since she got it new. With all the troubles they have had with it I told her to see if she could get it exchanged for another one. What do you guys think?