Schematic diagram of freight car idle speed adjustment

The specific operation steps for adjusting the idle speed of freight cars are as follows:

1. Run the engine until the water temperature reaches 90 degrees.

2. Open the door on one side of the truck cab.

3. Pull the hood switch on the left side of the truck driver's leg. ?

4. Open the hood of Changan Xinbao. ?

5. Turn the idle adjusting screw on the throttle body with a screwdriver. Idle speed decreases clockwise and increases counterclockwise.