I have an FS481-V on a Exmark Metro 32" that is giving me problems. First thing it started doing is making a snapping noise from the exhaust but still had power. I accidentaly broke the fuel pump fooling with it in the cold. It broke being brittle do to the cold while I was trying to remove the breather filter. I ordered a fuel pump for it thinking they are all similar and got the wrong one first time. I now have the right one but im not sure what the deal is. Im wondering if I have a blown head gasket. Either that or its where I tried the wrong fuel pump and it pumped gas the wrong way into the crankcase. Im frustrated with this engine and ready to scrap it. Is there a common problem with these newer Kawasaki engines? Im thinking of going to all Briggs Vanguards and Kohlers at this point.