To adjust the fuel level, you will need to take out the sight plug in the side of the fuel bowl. With it running, loosen the lock screw on top of the fuel bowl and turn the nut clockwise to lower the level or counter clockwise to bring up the level. You want it to be at the bottom of the sight hole. If you turned it too far down, it might have bent the tang on the float. To get back to a starting place, you will need to take out the lock screw and turn the nut so the needle & seat is 1/2 way through the thickness of the nut. Then put the screw back in, take the fuel bowl off and hold it upside down & level then bend the tang on the float so the float is level in the center of the fuel bowl. This will get you back to a starting place.