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Troubleshooting 113
4
The fabric is
wrinkled.
The thread tension is incorrect.
Adjust the tension of the upper
thread.
page 46
Stitches are
skipped.
The upper thread was not threaded
correctly.
Correct the upper threading. page 22
The combination of fabric, thread
and needle is not correct.
Select a thread and needle that are
appropriate for the type of fabric
being sewn.
page 30
The needle is bent or blunt. Replace the needle.
page 32
The needle is incorrectly installed. Correctly install the needle.
Dust has accumulated under the
needle plate or in the bobbin case.
Remove the needle plate cover and
clean the race.
page 100
A high-pitched
noise is made
while sewing.
Dust has accumulated in the feed
dogs or in the bobbin case.
Clean the race. page 100
The upper thread was not threaded
correctly.
Correct the upper threading. page 22
The bobbin case is scratched, or has
a burr on it.
Replace the bobbin case.
Contact your dealer or the nearest
authorized service center.
–
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.
page 16
The needle
threader cannot
be used.
The needle has not been raised to
the correct position.
Press the “Needle Position” button. page 25
The needle is incorrectly installed. Correctly install the needle. page 32
The stitch is not
sewn correctly.
The presser foot that is used is not
appropriate for the type of stitch that
you wish to sew.
Attach the presser foot that is
appropriate for the type of stitch that
you wish to sew.
page 94
The thread tension is incorrect.
Adjust the tension of the upper
thread.
page 46
The thread is tangled, for example,
in the bobbin case.
Remove the tangle thread. If the
thread is tangled in the bobbin case,
clean the race.
page 100
The fabric does
not feed.
The feed dogs are lowered.
Slide the drop feed lever to the right
(as seen from the rear of the machine).
page 69, 82
The stitch is too short. Lengthen the stitch length. page 48
The presser foot that is used is not
appropriate for the type of stitch that
you wish to sew.
Attach the presser foot that is
appropriate for the type of stitch that
you wish to sew.
page 94
The pressure of the presser foot is
weak.
Turn the presser foot pressure dial to
the left to increase the pressure of
the presser foot.
page 34
The thread is tangled, for example,
in the bobbin case.
Remove the tangle thread. If the
thread is tangled in the bobbin case,
clean the race.
page 100
Zigzag foot “J” is slanted on a thick
seam at the beginning of stitching.
Use the presser foot locking pin
(black button on the left side) on
zigzag foot “J” to keep the presser
foot level while sewing.
page 52
Symptom Probable Cause Remedy Reference
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