After the pedal of Haojue Yue Hang 125 was replaced by a carburetor with a miscellaneous brand, the car started and the throttle turned a lot before it left, and it slowed down first and then accelerated during driving.

It is normal for cold cars to idle at a high speed in winter. If this is still the case after warm-up, please adjust the idle throttle screw counterclockwise until the normal idle speed is reached. If the adjustment is ineffective and the idle speed is still high, you can adjust the idle speed mixing ratio at the side, screw it in clockwise and adjust it bit by bit until you are satisfied.