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The air screw on a 15mm carburetor for a 49cc chopper is typically adjusted to optimize the air-fuel mixture for efficient combustion. A common starting point is to turn the screw out about 1 to 1.5 turns from the fully seated position. Fine-tuning may be necessary based on engine performance, idle stability, and throttle response. Always make adjustments gradually and test the engine's performance after each change.

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AnswerBot

1w ago

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