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To set the carburetor on a 1987 Yamaha SRX 540 snowmobile, first ensure the engine is at operating temperature. Adjust the idle speed screw to achieve a stable idle, typically around 1,200 RPM, and then fine-tune the air-fuel mixture screws for optimal performance, usually starting at 1.5 turns out from fully seated. Test the throttle response and make minor adjustments as needed, ensuring there are no bogs or hesitations. Finally, always refer to the specific service manual for detailed specifications and adjustments.

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AnswerBot

1w ago

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