CUSTOMER BOUGHT UNIT 07-15-2014. HIS COMPLAINT IS AFTER ABOUT 20 MIN OF RUN TIME UNIT STALLS AND IS HARD TO START. THIS MOWER STARTS AND RUNS GREAT. IT DOES HAVE A INLINE FUEL FILTER. AFTER RUNNING UNIT A FEW TIMES THE ENGINE WILL STALL--ACTS LIKE IT IS RUNNING OUT OF FUEL. I AM WATCHING THE CLEAR FILTER START OUT FULL AND AS IT RUNS THE LEVEL GETS LOWER AND LOWER UNTIL THE FILTER APPEARS TO BE DRY AND THEN ENGINE STOPS. TO ME IT SEEMS THAT THE FUEL FLOW FROM TANK CAN'T KEEP UP WITH THE CARBURETOR BURNING IT. DOESNT SEEM TO MAKE SENSE TO ME THAT THE FILTER IS BAD. ORIGINALLY THESE UNITS DID NOT USE A FUEL FILTER. AS OF 2012 THEY ADDED ONE. HAVENT TRIED A STRAIGHT FUEL LINE YET(WITH OUT FILTER). ANY THOUGHTS FROM THE EXPERTS.