![]() ![]() Simultaneously, the cam on the starter lever will open the throttle beyond the normal idle position, according to the setting of the fast-idle stop screw 4, to provide the fast-idle speed when the motor is cold. In the full rich position the largest hole will be in communication with the starter circuit and provide the richest mixture. While the choke remains in action the car may be driven away but the control knob should be released or pushed in gradually as the engine attains normal working temperature. When the motor fires the increased depression will lift the air valve 18 to weaken the initial starting mixture and prevent the engine stalling through over richness. Simultaneously, the cam on the lever 6 will open the throttle beyond the normal idle position according to the setting of the fast-idle stop screw 4 to provide the fast-idle speed when the motor is cold. ![]() In this manner the enriched mixture necessary to ensure cold starting is provided. ![]() In this manner, the correct level is automatically maintained the whole of the time the carburetter is in action. As the petrol level rises the float lifts and, by means of the float arm and tag, closes the needle on its seating when the correct level has been attained. ![]()
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