How to adjust the idle speed of Great Wall m4?

1. Adjust the throttle screw of the carburetor so that the engine speed is slightly higher than the normal idle speed. Turn the idle engine oil concentration adjusting screw left and right to find out the highest engine speed at this throttle position.

2. Adjust the throttle screw slightly counterclockwise to reduce the engine speed.

3. Press the accelerator+idle oil several times until the throttle valve is adjusted to a certain position, and the highest speed is equal to the standard idle speed of the whole vehicle.