How to correctly install carburetor, oil needle and card of motorcycle?

A restless throttle? Same throttle position

If the position of the oil needle clamp spring is different, the height of the oil needle is also different, so the oil output is also different. When you turn the throttle. Different natural oil production? The higher the pointer, the higher the oil output, and vice versa.

Put the oil needle below, put the U-clip on it, and clamp the oil needle.