machine de idled a couple times and i thought the fuel filter was plugged- i put a new fuel filter on and primed bulb- machine ran for a bit then died out- hard restart- had to sqeeze primer bulb again- has done it a couple times- bled air out screw on top of housing- still doing it- primer bulb collapses and doesnt allow constant squeezing- squeeze it and it doesnt reinflate..........