I bought my Hustler Super Z in the fall of 2006 and did not use it until the Spring of '07. I currently have about 50 hrs on the machine. Since then I have gone through at least 24 in line fuel filters and 4 drop filters in the gas tanks. The in-line filters would have some noticable dirt and the drop filters were plugged. I have bypassed the drop filters all together (expensive to buy) and I am running solely on the in line filter. Last year I totally took off the gas tanks, cleaned them out of any debris, dumped the old gas, and then used some new 89 octane gas with 10% ethanol to dry out any residual water deposits in one tank. Then I used the same type of fuel from a different gas station (rule out bad fuel). Also I did a complete maintenance of the machine this March (new plugs, oil filter, adn oil). Currently I put a new filter on and with in minutes the engine is coughing and killing the engine due to a lack of fuel (I can see the lack of fuel in the in-line filter). I'm no longer 100% sure that it is the fuel filter getting clogged. I still see some dirt in the in line filter, but I don't see how that would totally stop the fuel. So is this a fuel filter problem? Is it the fuel pump? Any other ideas? Has anyone had these problems too? Thanks for the input and help.