| 摘要 |
A carburetor prevents priming of a combustion engine under certain operating conditions. The carburetor includes a body member having a wall portion defining an orifice extending through the body member, a fuel nozzle positioned through the wall portion and in operative communication with the orifice, a fuel bowl positioned in operative communication with the fuel nozzle, a primer device in operative communication with the fuel bowl, and a primer lockout operatively positioned between the primer device and the fuel bowl. A method of controlling the carburetor during start-up and warm-up of a combustion engine is also described, including the steps of actuating the primer device to prime the carburetor, starting the engine with the external vent in open communication with the fuel bowl, disabling the primer device when the engine reaches a first operating temperature, and closing the external vent when the engine reaches a second operating temperature.
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