How do you replace Tecumseh lawn mower primer bulb?

To replace a Tecumseh lawn mower primer bulb, first, ensure the mower is off and cool. Remove any screws or clips securing the old bulb to the carburetor and gently pull it out. Clean the area around the carburetor, then insert the new primer bulb into the opening, ensuring it fits snugly. Finally, secure it with the screws or clips, and you're ready to go.