Traduciendo paso 3
Remove the centerpiece with the wheel and tilt it to the right so the spring can slip off.
Then remove the left wire by pulling it out of the socket it’s put in.
The spring here is what let’s you press down on the wheel without letting it get stuck there. It basically bounces it back up. And the wire on the left helps hit the small red button on the mouse which would send signals through the usb cable saying that you pressed down on the wheel. (Same thing happens when you click regularly.)