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Looking down the throat of a CVK (Constant Velocity Keihin) while revving the engine on my 1980 Honda CX500. You can see at idle fuel being drawn around the needle, then as the slide lifts more fuel comes from both main jets (CX500s have two main jets, a pilot jet, and an idle jet. The latter two are nonremovable, though the pilot jet has an adjustible/removable needle).


Would have given it more beans but didn’t want to piss the neighbors off too much.

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