How to reduce the idle speed of Excelle?

There is a special screwdriver to adjust the idle speed of the throttle idle motor, and the idle speed of Excelle can be changed by left and right adjustment.

When the engine is idling, it is called idling. When the engine is running, if the accelerator pedal is completely released, the engine will be at idle speed. The engine speed at idle speed is called idle speed. Idle speed can be adjusted by adjusting the size of air door. Generally speaking, the lowest idle speed is the best when the engine does not shake.