1. First, use a screwdriver to loosen the screws on the sewing machine mask.
2. After unscrewing the screws, take off the mask by hand.
3. Find the pressure rod responsible for running the presser foot, and continue to loosen the parts located below with a screwdriver.
4. When the parts are loose, the presser foot can be adjusted directly by twisting by hand.
5. When adjusting, do not twist the presser foot, and the presser needle on the presser foot must be aligned with the press hole.
6. After the adjustment is completed, use a screwdriver to tighten the parts and restore them.
