Pump- Primer

This is a single primer bulb for a small engine. The primer bulb is clear and made of rubber. The bulb gets pressed with your finger to purge the carburetor of air. Fuel then gets forced up from the fuel tank through the fuel line and back to the carburetor. The extra fuel then gets pushed back into the fuel tank through the return line. The primer bulb can easily crack due to its constant contact with fuel and will need to be replaced.