① First draw a line to make the center of the floor spring shaft coincide with the door clamp shaft.
② According to the instructions and the real object, open holes on the ground, and the size of the holes should be tightly matched with the ground spring housing and cannot be loosened.
③ Put the floor spring into the opened hole and straighten it.
④ Lift up the door leaf with the door clip installed, and insert the shaft of the floor spring into the shaft hole of the door leaf.
⑤ Adjust the screws in the three directions of the floor spring to keep the door leaf vertical and the axis of up and down rotation coincident.
⑥ Adjust the speed of closing the door and cover the floor spring decorative cover.