How to adjust the mixing ratio of motorcycle carburetor! Who can answer it? Thank you!

This question is simple. You don't understand the principle of carburetor idling oil supply. When idling, you turn the mixture screw clockwise, resulting in less air intake, poor combustion, more oil and less gas, and of course the idling is unstable. According to what you said, the idle speed rises when screwing clockwise, which means that the original idle screw of carburetor is screwed too much. I suggest that you screw the mixture screw to the end, quit for 2 turns, and then adjust the idle screw until the idle speed is stable. Personally, I think the idle speed should not be too low. I won't go into details about oil. I analyze that the main problem of your car is that the carburetor oil level is low, so you can't supply oil if you run fast, or the carburetor needs to be cleaned, and the mixture is thin because the main metering hole is not smooth. In addition, check whether the connecting screws between carburetor and cylinder head are tightened to avoid air leakage. That's all. Leave me a message if you can't.