Patent ID: 6615792
Filing Date: 2003-09-09
Classification: F02M,Y10S

Abstract:
A fuel shut-off system for a combustion engine carburetor having a body and a fuel-and-air mixing passage extending from an inlet and through the body, a fuel chamber carried by the body, and a fuel nozzle, the fuel chamber communicating with the fuel-and-air mixing passage via the fuel nozzle, the fuel shut-off system comprising:a vacuum bypass passage carried by the body and communicating with the fuel-and-air mixing passage away from the inlet and in the region of the fuel nozzle; a fuel chamber passage carried by the body and communicating with the fuel chamber; a valve having an actuator exposed to the vacuum bypass passage and the fuel chamber passage, the actuator having an atmospheric position and a vacuum bypass position; wherein the actuator in the atmospheric position obstructs the vacuum bypass passage from communicating with the fuel chamber passage when the engine is running; and wherein the actuator in the vacuum bypass position is constructed and arranged to provide communication between the vacuum bypass passage and the fuel chamber passage during engine coast down.