Dave
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SuzukiSavage.com Rocks!
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The diagram came from an Google "image" search for a CV carb.
The air jet is not after the slide....you are putting 3 dimensional thinking on a 2 dimensional diagram. The dashed line is a passage that passes through the casting, and it is not connected to the venturi. The air jet is in the cavity underneath the diaphragm(18) for the slide, and that space is connected to the large air opening (15) at the top of the carb throat.
The air jet (9) is where the main jet/needle jet gets the air to mix with the fuel, and the jet (16) is where the pilot jet circuit get the air to mix with the fuel.
Both air jets (9) and (16) get filtered air at atmospheric pressure (minus whatever loss might occur as result of the air filter restriction).
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