Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Single cylinder Briggs engine, The round plastic piece is the fuel pump. A pulse pump that uses the piston pulses of the cylinder to move a diaphragm in the fule pump to pump the fuel fromtank to the carburetor. It has to pickup the fuel from the top of the tank, through a suction tube. If there is a break in the vacuum before the pump, it will not suck.
If you tank the fuel line off after the pump or at the carburetor end, do you have fuel squirting when cranking? If you d , the fuel pump and supply are ok. That would leave the electric fuel solenoid in the carburetor base as a possible trouble spot. It has to have 12 volts to it , as link as the key is on
as long as the key is on
I see question is still open, did you find the problem?