20. Needle: The place where the needle is worn.

21. Presser foot: Press the presser foot lifter down to install the presser foot. After the presser foot, press the release button to automatically drop the presser foot.

22. Needle plate: Use a needle plate screwdriver to remove the needle plate.

23. Bobbin cover: The bobbin cover can be removed with the right hand on the bobbin cover release button.

24. Feeding teeth: When the presser foot is lowered, the feed dog can operate by itself.

25. Needle plate data: Align the needle board data line when sewing.

26. Presser foot release button: Press and hold the release button behind the presser foot, the presser foot will automatically fall.

27. Needle clamp screw: Use the needle plate screwdriver to turn the upper needle clamp screw to remove the needle.