TroubleshootingA-10fTurn off the machine, and then install the bobbin andpresser foot.• Refer to “Installing the bobbin” and “Replacing thepresser foot” in the “Basic operations” section.gCorrectly thread the machine.• For details on threading the machine, refer to “UpperThreading” in the “Basic operations” section.hPerform trial sewing with cotton fabric.If the thread becomes tangled under thebobbin winder seatIf the bobbin winding starts when the thread is not passedunder the pretension disk of the bobbin-winding thread guidecorrectly, the thread may become tangled under the bobbinwinder seat.In such a case, wind off the thread according to the followingprocedure.1 Thread2 Bobbin winder seataIf the thread become tangled under the bobbin winderseat, press the “Start/Stop” button once to stop thebobbin winding.When the foot controller is plugged in, remove yourfoot from the foot controller.bCut the thread with scissors beside the bobbin-windingthread guide.1 Bobbin-winding thread guidec Slide the bobbin winder shaft to the left, and thenremove the bobbin from the shaft and cut the threadleading to the bobbin in order to be able to completelyremove the bobbin from shaft.Memo• The thread may have become tangled as a resultof incorrect upper threading. Make sure that themachine is correctly threaded.Note• Incorrect sewing may be the result of incorrectupper threading or sewing thin fabrics. If thereare poor results from the trial sewing, check theupper threading or the type of fabric being used.12CAUTION• Do not remove the bobbin winder seat even ifthe thread become tangled under the bobbinwinder seat. It may result in injuries.• Do not remove the screw on the bobbinwinder guide post, otherwise the machine maybe damaged; you cannot wind off the threadby removing the screw.1 Screw of the bobbin winder guide post11
