APPENDIX ————————————————————————————————————————————————————————————————————————————————————————————————————————————100gCorrectly thread the machine.• For details on threading the machine, refer to“Threading the upper thread” on page 20.Note● The thread may have become tangled as aresult of incorrect upper threading. Makesure that the machine is correctly threaded.hPerform trial sewing with normal fabric.Note● Incorrect sewing may be the result ofincorrect upper threading or sewing thinfabrics. If there are poor results from the trialsewing, check the upper threading or thetype of fabric being used.When the thread becomestangled under the bobbinwinder seatIf the bobbin winding starts when the thread is notpassed under the pretension disk of the bobbin-winding thread guide correctly, the thread maybecome tangled under the bobbin winder seat.In such a case, wind off the thread according to thefollowing procedure.a Threadb Bobbin winder seataIf the thread becomes tangled under thebobbin winder seat, press / (start/stopbutton) once to stop the bobbin winding.When the foot controller is plugged in, removeyour foot from the foot controller.a Start/stop buttonbCut the thread with scissors beside thebobbin-winding thread guide.a Bobbin-winding thread guideabCAUTION● Do not remove the bobbin winder seat even ifthe thread becomes tangled under the bobbinwinder seat. It may result in injuries.● Do not remove the screw of the bobbinwinder presser, otherwise the machine maybe damaged; you cannot wind off the threadby removing the screw.a Screw of the bobbin winder presseraa