How to open the door of Suzuki Junchi gt 125?

The valves are all located on the carburetor, but the handle positions are different. Some have a handle directly on the carburetor, and some are connected to the left handle switch through cables, which is more convenient to use. The air door of the carburetor of the scooter is temperature-controlled, and it will automatically add air when the car is cold, without manual operation by the driver.

The function of shock absorber is to provide more concentrated mixture for the engine by reducing the air flow or increasing the gasoline flow when the cold car starts, which is beneficial to the cold car start. Whether it is a choke or a thickening type, the function is the same. ?

There is a black round handle on the carburetor on the right in the link below. Pulling it out will pull the wind, but pressing it back will not pull the wind.

The red circle in the picture is