FS40s

FAQs & Troubleshooting

How do I install the bobbin wound with thread?

Before inserting or changing the bobbin, be sure to turn off the machine, otherwise injuries may occur if the foot controller or Start/ Stop button is accidentally pressed and the machine starts sewing.

Be sure to use the included bobbins (part code: SA156, SFB: XA5539-151) or the same type.
SA156 is Class 15 type bobbin.

(1) 11.5 mm (7/16 inch)
Make sure you follow the instructions carefully. If you do not cut the thread completely and the bobbin is wound, when the thread runs low, it may tangle around the bobbin and cause the needle to break.
Not winding the bobbin properly may cause the thread tension to loosen, and may break the needle.

(1) Wound evenly
(2) Wound poorly

Turn on the machine.

Press (Needle position button) once or twice to raise the needle.

Turn off the machine.
Raise the presser foot lever.
Open the bobbin cover.
Place the bobbin in the bobbin case so that the thread unwinds to the left.

(1) Bobbin case

For the correct winding direction of the bobbin thread, be sure to place the bobbin into the bobbin case in the same orientation that it was on the bobbin winder shaft.
Hold the end of the thread, push the bobbin down with your finger, and then pass the thread through the slit, as shown.
Reattach the bobbin cover.
* Make the end of the thread come out from the left side of the cover.