FAQs & Troubleshooting
How do I wind the bobbin? (For models equipped with the fast bobbin winding system)
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 that the thread unwinds as shown.
If the spool of thread is not in the right place, the thread may tangle on the spool pin.
|(1) Thread guide||(2) Pretension disk|
Make sure that the thread passes under the pretension disk.
(3) Slit (cutter)
Make sure the notch fits the projection.
Checking the orientation of the bobbin will be helpful in later procedures. By placing the bobbin into the bobbin case in the same orientation that it was on the bobbin winder shaft, the bobbin can be installed with the correct winding direction of the bobbin thread.
The "b" mark on one side of the bobbin included with this machine can be used as a reference.
Be sure to wind the thread clockwise around the bobbin, otherwise the thread will become wrapped around the bobbin winder shaft.
Pass the thread through the slit in the bobbin winder seat.
|(1) Slit (with built-in cutter)|
Be sure to cut the thread as described. If the bobbin is wound without cutting the thread using the cutter built into the slit in the bobbin winder seat, the thread may become tangled in the bobbin or the needle may bend or break when the bobbin thread starts to run out.
We recommend winding stretch thread, such as transparent nylon thread, at a low speed since the thread may stretch.
|(1) Wound evenly
(2) Wound poorly