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TROUBLESHOOTING
Appendix
331
8
Bobbin thread breaks Bobbin is set incorrectly. Reset the bobbin thread correctly. 43
There are scratches on the bobbin or it doesn’t
rotate properly.
Replace the bobbin. 43
Thread is twisted. Use scissors, etc. to cut the twisted thread
and remove it from the race, etc.
—
A bobbin designed specifically for this machine
is not used.
Incorrect bobbins will not work properly. Only
use a bobbin designed specifically for this
machine.
43
Bobbin thread does
not wind neatly on the
bobbin.
The thread is not passed through the bobbin
winding thread guide correctly.
Correctly pass the thread through the bobbin
winding thread guide.
38
Bobbin spins slowly. Press [+] in the bobbin winding window to
increase the bobbin winding speed.
39
The thread that was pulled out was not wound
onto the bobbin correctly.
Wind the thread that was pulled off around the
bobbin 5 or 6 times clockwise.
39
Skipped stitches Needle is turned, bent or the point is dull. Replace the needle. 56
Using improper needle or thread for the
selected fabric.
Check the “Fabric/Thread/Needle
Combination” chart.
58
Machine is threaded incorrectly. Check the steps for threading the machine
and rethread it correctly.
46
Dust or lint has collected under the needle plate. Remove the dust or lint with the brush. 326
Needle is installed incorrectly. Reinstall the needle correctly. 56
Needle is defective. Replace the needle. 56
Thin or stretch fabrics are being sewn. Sew with one sheet of thin paper under the
fabric.
64
Needle breaks Needle is installed incorrectly. Reinstall the needle correctly. 56
Needle clamp screw is not tightened. Tighten the needle clamp screw. 57
Needle is turned or bent. Replace the needle. 56
Using improper needle or thread for the
selected fabric.
Check the “Fabric/Thread/Needle
Combination” chart.
58
Wrong presser foot was used. Use the recommended presser foot.
“STITCH SETTING
CHART”
Upper thread tension is too strong. Adjust the thread tension setting. 67, 227
Fabric is pulled during sewing. Do not pull the fabric during sewing. —
Spool cap is set incorrectly. Check the method for attaching the spool cap,
then reattach the spool cap.
46
There are scratches around the holes in the
needle plate.
Replace the needle plate, or consult your
authorized dealer.
86
There are scratches around the hole(s) in the
presser foot.
Replace the presser foot, or consult your
authorized dealer.
54
There are scratches on the race. Replace the race, or consult your authorized
dealer.
326
Needle is defective. Replace the needle. 56
Upper threading is incorrect. Check the steps for threading the machine
and rethread the machine.
46
Bobbin is set incorrectly. Reset the bobbin thread correctly. 43
Presser foot is attached incorrectly. Attach the presser foot correctly. 54
Screw of the presser foot holder is loose. Securely tighten the screw of the presser foot. 55
Fabric is too thick. Use fabric that the needle can pierce when
the handwheel is turned.
63
Fabric is fed forcefully when sewing thick fabric
or thick seams.
Allow the fabric to be fed without being
forcefully pushed.
Stitch length is too short. Adjust the stitch length. 67
Stabilizer is not attached to fabric being
embroidered.
Attach stabilizer. 152, 198
Bobbin thread is incorrectly wound. Use a correctly wound bobbin. 37
Problem Cause Solution Page