Does tightening the carburetor mixture screw make it lean or rich?

[DeJuniper]

Carburetor mixture screw tightening. The following is an introduction to carburetors and cleaning precautions: Introduction to carburetors: A carburetor is a mechanical device that mixes a certain proportion of gasoline with air under the vacuum generated by the engine's operation. As a precision mechanical device, the carburetor uses the kinetic energy of the incoming air to atomize the gasoline. Its crucial role in the engine can be likened to the "heart" of the engine. Precautions for cleaning carburetors: If a significant amount of sediment is found in the carburetor float chamber, it is often caused by a failed gasoline filter. In this case, the gasoline filter should be inspected, and if confirmed to be faulty, it needs to be cleaned or replaced with a new one.