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Troubleshooting
Symptom, Cause/solution
There are scratches around the opening in the
needle plate.
* There is a notch on the left side of the opening
in the needle plate. This is not a scratch.
a
There are scratches around the opening in the
presser foot.
There are scratches on the bobbin case.
A bobbin designed specifically for this machine is
not used.
Upper threading is incorrect.
Bobbin is set incorrectly.
Presser foot is attached incorrectly.
Screw of the presser foot holder is loose.
Fabric is too thick.
Fabric is fed forcefully when sewing thick fabric
or thick seams.
Stitch length is too short.
Stabilizer is not attached to fabric being
embroidered.
Bobbin thread is incorrectly wound.
Upper thread breaks.
Machine is not threaded correctly (used the
wrong spool cap, spool cap is loose, the thread
did not catch the needle bar threader, etc.).
Knotted or tangled thread is being used.
The selected needle is not appropriate for the
thread being used.
Upper thread tension is too tight.
Thread is tangled.
Needle is turned, bent or the point is dull.
Needle is installed incorrectly.
There are scratches around the opening of the
needle plate.
* There is a notch on the left side of the opening
in the needle plate. This is not a scratch.
a
84
Reference
*
1 Notch
*
*
13
17
16
23
24
21, 32
32
29
60
13
17
–
21
29
79
22
22
*
1 Notch
Symptom, Cause/solution
There are scratches around the opening in the
presser foot.
There are scratches on the bobbin case.
Using improper needle or thread for the selected
fabric.
A bobbin designed specifically for this machine is
not used.
The thread is tangled on the wrong side of the fabric.
Upper threading is incorrect.
Using improper needle or thread for the selected
fabric.
The upper thread is too tight.
The bobbin thread is incorrectly installed.
Bobbin thread breaks.
Bobbin is set incorrectly.
Bobbin thread is incorrectly wound.
A scratched bobbin is being used.
Thread is tangled.
A bobbin designed specifically for this machine is
not used.
Fabric puckers.
There is a mistake in the upper or bobbin
threading.
Spool of thread is set incorrectly.
Using improper needle or thread for the selected
fabric.
Needle is turned, bent or the point is dull.
Stitches are too long when sewing thin fabrics.
Thread tension is set incorrectly.
Wrong presser foot was used.
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.
The thread tension is incorrect.
The thread is tangled, for example, in the bobbin
case.
Feed dogs are set in the down position.
• Slide the feed dog position switch to the right
(
).
Reference
*
*
21
13
17, 79
21
16, 79
16
13
16
80
13
13, 17
13
21
22
29
29, 79
23
23
29, 79
80
5, 47
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