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SIMPLE CARBURETTOR MECHANISM

Air supplied to the engine passes through venturi 1. Owing to the increase in air velocity, the pressure in the venturi drops sharply. At this, fuel from chamber 2 is drawn up through gauged hole a in a tube located along the axis of the venturi. By means of float 3, a constant level of fuel is maintained in chamber 2. As the level drops, float 3 descends, turning about fixed axis A. At this, the …