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To adjust the choke on a Rochester 2-barrel carburetor, first ensure the engine is cold. Locate the choke adjustment screw and loosen it slightly. Rotate the choke plate until it is fully closed, then open it slightly (about 1/32 inch) to allow for airflow. Tighten the screw while holding the plate in this position, and then check its operation by starting the engine to ensure it opens as the engine warms up.

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1mo ago

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