FAQs & Troubleshooting
Bobbin winder shaft spring
| Spool pin|
If the spool is not positioned so that the thread unwinds correctly, the thread may become tangled around the spool pin.
|Thread guide cover|
| Hook of the bobbin-winding thread guide|
Make sure that the thread passes under the pretension disk.
|Slit in bobbin winder seat (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 bobbin may not be wound correctly. In addition, the thread may become tangled in the bobbin or the needle may bend or break when the bobbin thread starts to run out.
|Sewing speed controller|
When the bobbin winding becomes slow, stop the machine, otherwise the sewing machine may be damaged.
When the sewing machine is started or the handwheel is turned after winding the bobbin, the machine will make a clicking sound; this is not a malfunction.