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Symptom
The presser foot that is used is not appropriate
for the type of stitch that you wish to sew.
The thread tension is incorrect.
The stitch is not
The thread is tangled, for example, in the
sewn correctly.
bobbin case.
Feed dogs are set in the down position.
■ After sewing
Symptom
Upper threading is incorrect.
Bobbin is set incorrectly.
Using improper needle or thread for the
selected fabric.
Thread tension is
incorrect.
Presser foot holder is not attached correctly.
Thread tension is set incorrectly.
Bobbin thread is incorrectly wound.
Needle is turned, bent or the point is dull.
A bobbin designed specifically for this machine
is not used.
Wrong presser foot was used.
Did not use a stabilizer material on thin fabrics
or stretch fabrics.
Pattern does not
Thread tension is set incorrectly.
turn out.
Fabric was pulled, pushed or fed at an angle
while it was being sewn.
The thread is tangled, for example, in the
bobbin case.
Probable Cause
Probable Cause
Remedy
Attach the presser foot that is appropriate for
the type of stitch that you wish to sew.
Adjust the tension of the upper thread.
Remove the tangle thread. If the thread is
tangled in the bobbin case, clean the race.
Slide the feed dog position switch to the right
.
Remedy
Check the steps for threading the machine and
rethread the machine.
Reset the bobbin. (If needle plate was removed,
reinstall needle plate and tighten screws prior to
installing bobbin case. Check to make sure
needle enter through the center of needle plate
opening.)
Check the "Fabric/Thread/Needle
Combinations" chart.
Reattach the presser foot holder correctly.
Adjust the thread tension.
Use a correctly wound bobbin.
Replace the needle.
Incorrect bobbins will not work properly. Only
use a bobbin designed specifically for this
machine.
Attach the correct presser foot.
Attach a stabilizer material.
Adjust the thread tension.
Sew while guiding the fabric with your hands so
that the fabric is fed in a straight line.
Remove the tangle thread. If the thread is
tangled in the bobbin case, clean the race.
Troubleshooting
Reference
B-31
B-40, A-6
A-7
B-2
A
Reference
B-20
B-17, A-2
B-27
B-31
B-40, A-6
B-14
B-28
B-14
B-31
S-4
B-40, A-6
B-34
A-7
Appendix A-17
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Table of Contents
Troubleshooting
