Patent ID: 8333366

Claim:
A carburetor for use with an internal combustion engine, the carburetor comprising: a body including an air/fuel passageway and a fuel passageway formed therein; a throttle valve positioned in the air/fuel passageway; a fuel bowl coupled to the body; a fuel bowl chamber at least partially defined by the fuel bowl; a one-piece fuel-metering insert coupled to the body, the insert including an idle circuit passageway having a first end in fluid communication with the fuel passageway and a second end in fluid communication with the fuel bowl chamber, the idle circuit passageway configured to carry fuel from the fuel bowl chamber to the air/fuel passageway via the fuel passageway during engine operation when the throttle valve is oriented in a substantially closed position; and a main circuit passageway having a first end in fluid communication with the air/fuel passageway and a second end in fluid communication with the fuel bowl chamber, the main circuit passageway configured to carry fuel from the fuel bowl chamber to the air/fuel passageway during engine operation when the throttle valve is opened from the substantially closed position.