How to Adjust the Carburetor Mixture to be Richer or Leaner?

1 Answers
SanAnnie
07/29/25 7:07pm
To adjust the carburetor mixture, tightening the screw makes it leaner (clockwise), while loosening it makes it richer. A carburetor is a mechanical device that mixes a certain proportion of gasoline with air under the vacuum created by the engine's operation. As a precision mechanical device, the carburetor uses the kinetic energy of the incoming airflow to atomize the gasoline. Its critical role in the engine can be likened to the "heart" of the engine. Carburetor-related information: 1. Classification: Carburetors are divided into simple and complex types, and can also be categorized as downdraft or sidedraft. Based on the throttle type, they can be further classified as rotary or slide type; 2. Rotary Throttle: A rotary throttle is a disk-shaped throttle that rotates around an axis, located between the carburetor throat and the intake pipe, altering the flow area of the intake passage. The slide throttle consists of a barrel or plate-shaped throttle that moves up and down at the throat to change the passage area, commonly used in motorcycle carburetors; 3. CV Type: There is also a hybrid carburetor that combines both types, where the rotary throttle is manually controlled and the slide throttle is controlled by a diaphragm. This is often used in motorcycles and is referred to as the CV type.
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