Acts like it ran outta fuel. I disconnected fuel like at primer bulb and blew in hose. no resistance from fuel in tank although tank is almost full. I know I drew vacuum as it was like sucking on an empty Coke bottle. Vacuum ceased when I loosened tank fill cap. To finish job and load up machine, I ran it off a 5 gallon jug on top of radiator. I'm wondering if fuel p/u has fallen off inside fuel tank. This is a BobCat with fuel tank under motor. Anyone know how to access fuel tank p/u ? Help !