Tabla de contenido
Publicidad
Troubleshooting
Condition
The needle thread
breaks.
The bobbin thread
breaks.
The needle
breaks.
Skipped stitches
Seam puckering
Stitches form
loops below the
work
The machine does
not work.
The machine does
not run smoothly
and is noisy.
Cause
1. The needle thread is not threaded properly.
2. The needle thread tension is too tight.
3. The needle is bent or blunt.
4. The needle is incorrectly inserted.
5. The needle and bobbin threads are not under and
behind the presser foot when start sewing.
6. The fabric is not being drawn to the back when sewing
is finished.
7. The thread is either too heavy or too fine for the needle.
1. The bobbin thread is not threaded properly in the bobbin
case.
2. Lint has collected in the bobbin case.
3. The bobbin is damaged and doesn't turn smoothly.
1. The needle is incorrectly inserted.
2. The needle is bent or blunt.
3. The needle clamp screw is loose.
4. The tension of the needle thread is too tight.
5. The fabric is not drawn to the back when sewing is
finished.
6. The needle is too fine for the fabric being sewn.
7. The pattern selector dial had been turned while the
needle was in the material.
1. The needle is incorrectly inserted.
2. The needle is bent or blunt.
3. The needle and/or threads are not suitable for the work
being sewn.
4. A BLUE TIPPED needle is not being used for sewing
stretch, very fine fabrics and synthetics.
5. The needle thread is not threaded properly.
1. The needle thread tension is too tight.
2. The machine is not threaded correctly.
3. The needle is too heavy for the fabric being sewn.
4. The stitch length is too long for the fabric.
* When sewing extremely light weight materials, place a
sheet of paper underneath the fabric.
1. The needle thread tension is too loose.
2. The needle is either too heavy or too fine for the thread.
1. The machine is not plugged in.
2. Thread is caught in the hook race.
3. Handwheel has been disengaged for bobbin winding.
1. Threads have been caught in hook mechanism.
2. The feed dog is packed with lint.
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Reference
Page 24
Page 26
Page 16
Page 16
Page 32
Page 26
Page 16
Page 22
Page 32
Replace the bobbin
Page 16
Page 16
Page 16
Page 26
Page 32
Page 18
Page 28
Page 16
Page 16
Page 18
Page 18
Page 24
Page 26
Page 24
Page 18
Make stitch denser.
Page 26
Page 18
Page 12
Page 50
Page 22
Page 50
Page 50
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