A carburetor is a device that is typically bolted to the side or top of a lawn mower engine depending on the manufacturer. The carburetor is designed to essentially draw gas from the gas tank and air through a filter into a mixing chamber. The gas and air are combined to form a highly combustible mixture that powers the engine of the mower. It may be necessary to locate the carburetor on a lawn mower engine to perform basic maintenance or troubleshooting.
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Turn off the ignition on the mower if necessary. Set the parking brake and place the lawn mower in gear to prevent accidental rolling.
Release any hood latches or other restraining devices so that the hood or covering of the lawn mower engine may be accessed.
Locate the carburetor by identifying the air intake and filter. Look for a round or square-shaped filter housing that is located on the top or side of the engine; it has holes or slits in the top. The housing is mounted to the carburetor by latches or screws and contains a paper or foam filter. The filter inside the housing is used to prevent dirt and dust from entering the carburetor.
Locate the carburetor by also tracing the fuel line from the gas tank. Determine the location of the gas tank. Typically, the tank will be black in color and mounted in a position that allows for easy access when fueling.
Identify the fuel line attached to the tank. The line will most often be located near the bottom of the gas and attached by means of a small clamp. Follow the fuel line from the tank to the connection point with the carburetor.
Refer to the owner's manual or online schematics for more help in determining the location of the carburetor on specific engine models.
Allow the lawn mower engine to completely cool before attempting to locate or work on the carburetor.