Reply To: Neptune model 500 carb/ Tillotson HS93A

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July 17, 2025 at 7:03 pm #298246
JOSEPH BRINCAT
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    Correct me if wrong , but Tillotson carb low speed is an air bleed , so closing the needle richens , opening leans. Just the opposite from what might expect And might explain why you are having trouble.

    Joe B