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Type | Mechanical |
---|---|
Number of Stitches | 12 |
Stitch Length | 4 mm |
Stitch Width | 5 mm |
Buttonhole Type | 4-Step |
Needle Threading | Manual |
Free Arm | Yes |
Buttonhole Styles | 1 |
Needle Threader | No |
Speed | 750 stitches per minute |
Bobbin | Class 15 |
Warranty | 25 years |
Adjusting play in the arm shaft and gear alignment.
Adjusting the timing between the needle and hook for proper stitch formation.
Adjusting the vertical position of the needle bar at its lowest point.
Ensuring the presser foot is parallel and at the correct height.
Adjusting the tension of the belt driving the hook mechanism.
Aligning the hook's rotation with the needle's position.
Adjusting the feed mechanism to prevent fabric movement.
Adjusting the buttonhole mechanism's movement.
Adjusting the tension of the upper thread.
Adjusting the bobbin winding mechanism.
Procedure for detaching the sewing machine motor.
Procedure for removing the hook and bobbin housing.