Note . If the needle is not raised, the upper thread cannot be threaded correctly. Be sure to press the needle position button to raise the needle before threading the upper thread. ¦ Remedy Thread the upper thread again correctly by following the procedure below. Turn off the machine. a b If the thread is tangled, remove the tangled thread. • Refer to “Cleaning the race” (page 91) and “Tangled thread on wrong side of fabric” (page 95). Remove the upper thread from the machine. c d Turn the handwheel toward you (counterclockwise) to check if the handwheel moves smoothly. Continue to step If the handwheel moves smoothly j. Continue to step If the handwheel does not move smoothly e. Remove the needle plate cover, and then e remove the bobbin and bobbin case. f Insert the bobbin case so that the .. mark on the bobbin case aligns with the .. mark on the machine. • Refer to “Cleaning the race” (page 91). Attach the needle plate cover. g • Refer to “Cleaning the race” (page 91). h Set the bobbin in the bobbin case. • Refer to “Cleaning the race” (page 91). i If the needle is bent, replace it with a new one. • Refer to “Replacing the needle” (page 32). j Turn on the machine, and then press the needle position button to raise the needle. • Refer to “Upper threading” (page 25). k Thread the machine correctly. • For details on threading the machine, refer to “Upper threading” (page 25). Symptom 2 : The upper thread is tangled, for example, in the race, or fabric is caught in the machine. ¦ Cause Thread is tangled below the needle plate. ¦ Remedy Remove the fabric and reset the thread and bobbin by following the procedure below. Turn off the machine. a b Remove the fabric from the machine. • Refer to “Fabric is caught in the machine and cannot be removed” (page 99). 4 103 APPENDIX APPENDIX Remove the upper thread and bobbin. • Refer to “Fabric is caught in the machine and cannot be removed” (page 99). d Remove the bobbin case. • Refer to “Fabric is caught in the machine and cannot be removed” (page 99). If threads remain in the bobbin case, remove e it. • Refer to “Fabric is caught in the machine and cannot be removed” (page 99). f Insert the bobbin case so that the .. mark on the bobbin case aligns with the .. mark on the machine. • Refer to “Cleaning the race” (page 91). Attach the needle plate cover. g • Refer to “Cleaning the race” (page 91). hSet the bobbin in the bobbin case. • Refer to “Cleaning the race” (page 91). i If the needle is bent, replace it with a new one. • Refer to “Replacing the needle” (page 32). j Turn on the machine, and then press the needle position button to raise the needle. • Refer to “Upper threading” (page 25). k Thread the machine correctly. • For details on threading the machine, refer to “Upper threading” (page 25). Symptom 3 : The needle breaks, or the needle bends and thus hits the needle plate. ¦ Cause You have not used the right combination of fabric, thread and needle. ¦ Remedy Choose a thread and needle that are appropriate for the type of fabric. • Refer to “Needle types and their uses” (page 31). Symptom 4 : The fabric is not fed. ¦ Cause The thread has become clogged as the stitch is too fine. ¦ Remedy Lengthen the stitch length. • Refer to “Adjusting the stitch length and width” (page 40). List of symptoms List of symptoms ¦ Before sewing Symptom Possible cause How to put it right Reference The needle threader can not be used. (For models equipped with the needle threader lever.) You have not moved the needle holder to its highest position. Raise the needle either by turning the handwheel toward you (counterclockwise) so that the mark on the wheel points up or by pressing (needle position button) once or twice. page 25 The needle is incorrectly installed. Correctly install the needle. page 32 The sewing light does not come on. The machine is not turned on. Turn on the machine. page 14 The thread is not passed through the bobbin-winding thread guide correctly. Correctly pass the thread through the bobbin-winding thread guide. page 19 Bobbin thread does not wind neatly on the bobbin. Bobbin spins slowly. (for models equipped with the sewing speed controller.) Move the sewing speed controller to the right (so that the speed will be fast). page 21 The thread that was pulled out was not wound onto the bobbin correctly. (For models equipped with the fast bobbin winding system.) Wind the thread that was pulled off round the bobbin five or six times clockwise. page 20 The thread does not pass through the eye of the needle. (For models equipped with the needle threader lever.) You have not moved the needle holder to its highest position. Raise the needle either by turning the handwheel toward you (counterclockwise) so that the mark on the wheel points up or by pressing (needle position button) once or twice. page 25 The needle is incorrectly installed. Correctly install the needle. page 32 The needle threader lever does not lower to the correct position. (For models equipped with the...