Reply To: Tillotson CO7A carburetor – Chrysler/Sea King 9.6HP

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November 4, 2025 at 10:51 am #301201
JOSEPH BRINCAT
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    Just be aware that the idle needle on Tillotsons is an air bleed, so closing it richens the mixture. This is just opposite from the more common idle which controls fuel flow.

    Now,,, I’m pretty sure that this information is true for all Tilotsons,,, someone correct me if I’m wrong.  One way to tell would be to see what passage the needle enters… air bleed it will enter the carb throat not a fuel passage.

    Joe B