How to adjust the mixture ratio of motorcycle carburetor to be lean and rich, and how to know that it has been adjusted to the best state? Ask the masters for advice.

It depends on which carburetor it is. Generally, the vacuum membrane carburetors or carburetors of straddle-type vehicles above 125 are tightened clockwise and diluted counterclockwise, while the carburetors of some horizontal cylinder small displacement engines and some old two-stroke vehicles are tightened clockwise and diluted counterclockwise, just the opposite.

Carburetor is a mechanical device that mixes a certain proportion of gasoline with air under the vacuum generated by engine operation. As a precise mechanical device, carburetor uses the kinetic energy of inhaled airflow to atomize gasoline. Its important role in the engine can be called the "heart" of the engine.

The complete device of carburetor should include starting device, idle device, medium load device, full load device and acceleration device. The carburetor will automatically match the corresponding concentration and output the corresponding amount of mixed gas according to the requirements of different working conditions of the engine. In order to mix the mixture evenly, the carburetor also has the function of atomizing fuel for the normal operation of the machine.

A simple carburetor consists of three parts: the upper part has an air inlet and a float chamber, the middle part has a throat, a metering hole and a nozzle, and the lower part has? Throttle, wait.