2. Turn it counterclockwise with a flat screwdriver and unscrew the mounting screw. Then lift the layer that is pressed on it.
3. Take the belt apart, take it out, determine the length to be reduced, and cut it with scissors. Because the belt will become longer due to stretching during use, the cutting length can be increased by 3-5 cm compared with the actual length during system testing.
4. Put the cutting piece with the mounting hole together with the belt to be kept, align the head, determine with reference to the position of the original mounting hole, and draw the new mounting hole position with strokes.
5. Punch a new hole with scissors at the newly installed hole position. Rotate while rotating, so that the hole is enlarged, which is about the same size as the original hole.
6. After opening the hole, install and clamp the belt head as it is, and then install the removed screw seat into the new installation hole.
7. Install the screw again and tighten it with a screwdriver. At this time, the tightening direction is clockwise, which is opposite to the disassembly. In this way, a new belt that fits will come out.