what style fuel filter do you have on it ? does it have a fuel pump? if it doesnt have a fuel pump you might have the wrong filter on it if yours is clear with a yellowish tannish cone inside you have the one meant for a mower with a fuel pump if so and you dont have a pump you need the small round one that is flat on both ends that not including the nipples is about 1/2 to 1 inch long and about the same size around if you have the correct filter then i would be checking the gas cap vent to make sure its clear and if it has a fuel pump check that it is working correctly