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How Carburetors Work

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The rate at which the secondary air valve opens can be adjusted by rotating the spring-loaded tensioner after releasing the set screw (left). Rotating it counterclockwise slows the opening rate, while rotating it clockwise speeds it up.
How Carburetors Work - Carbin' It Easy

 The rate at which the secondary air valve opens can be adjusted by rotating the spring-loaded tensioner after releasing the set screw (left). Rotating it counterclockwise slows the opening rate, while rotating it clockwise speeds it up.  View Related Article

 

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