I have read about 20 posts which sort of describes my problem, however none fit my symptoms. So here we go. When I top off my tank, bleed out the air in the fuel line. My 751 will start and run about 20 minutes then slowly runs out of fuel. I can repeat the above procedure over and over and over with the same results. I am hoping someone can point me to the problem instead of me wildly replacing parts. Thanks in advance. AsForMe