66
Trouble Shooting
Condition
The machine does not
run smoothly and is
noisy.
The needle thread
breaks.
The bobbin thread
breaks.
The needle breaks.
Skipped stitches
Seam Puckering
Stitches form loops
below the work.
The cloth is not
feeding smoothly.
The machine does not
work.
The buttonhole
stitches are not
balanced.
Cause
1. Threads have been caught in hook mechanism.
2. The feed dog is packed with lint.
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 fabric is not being drawn to the back when sewing
is finished.
6. 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 stretch 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 cloth being sewn.
4. The stitches are too long for the fabric being sewn.
*
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 feed dog is packed with lint.
2. The stitches are too short.
1. The machine is not plugged in.
2. A thread is caught in the hook race.
3. Clutch knob is disengaged for the bobbin winding.
1. The stitch length is not suitable for the fabric being
sewn.
2. The work is being pulled or held back.
Reference
See Page 62
See Page 64
See Page 26
See Page 32
See Page 16
See Page 16
See Page 38
See Page 16
See Page 24
See Page 62-64
Exchange bobbin.
See Page 16
See Page 16
See Page 16
See Page 32
See Page 38
See Page 16
See Page 34
See Page 16
See Page 16
See Page 16
See Page 16
See Page 26
See Page 32
See Page 26
See Page 16
Make the stitch length
shorter.
See Page 32
See Page 16
See Page 64
Make the stitch length
longer.
See Page 12
See Page 62
See Page 22
See Page 34
Do not force the fabric
