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On a STIHL chainsaw carburetor, the "high" screw (often marked as H) adjusts the fuel mixture for high-speed operation, affecting performance at full throttle. The "low" screw (marked as L) controls the fuel mixture for low-speed operation, impacting idling and initial acceleration. Proper adjustment of these screws is crucial for optimal engine performance and efficiency. Always refer to the specific model's manual for precise tuning instructions.

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4d ago

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