The petrol inlet I, a parallel tube to accommodate a flexible fuel pipe is at the side of the main body. The carburettor has a cold start device interconnected with the throttle to provide for a specific degree of throttle opening to ensure a suitable fast-idle as necessary when the motor is cold. The CD carburettor is suitable for installation between horizontal and semi-downdraught, the features which permit this inclination are the concentric float chamber and a central jet orifice which gives a very steep flooding angle, ensuring good operation and stable idling in hilly terrain with no tendency to cut out on fast cornering. Resulting in an extremely light-weight carburettor relative to bore size and air flow. Three principal die-cast aluminium castings are used in the construction, the main body, suction chamber cover and the float chamber, It is a simple, compact and dustproof instrument with concentric float chamber surrounding the jet orifice with its attendant advantages over the more orthodox out-rigged float chamber some distance away from the jet. It operates on the" constant vacuum" principle, the choke area and the jet orifice varying according to the degree of throttle opening and the speed of the engine which will alter according to the load. or constant depression instrument is different from previous carburetters we have manufactured of fixed choke tube design.
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