69
TROUBLESHOOTING
Condition
Cause
Remedy
The needle thread
breaks
1. The thread is not threaded properly.
2. The thread tension is too tight.
3. The needle is bent or blunt.
4. The needle is incorrectly inserted.
5. The needle thread and the bobbin thread are not set under the presser foot
when start sewing.
6. The threads were not drawn to the rear after sewing.
7. The thread is either too heavy or too
fi
ne for the needle.
Page 21, 22
Page 26, 27
Page 17
Page 17
Page 23
Page 28
Page 17
The bobbin thread
breaks
1. The bobbin thread is not threaded properly in the bobbin holder.
2. Lint has collected in the bobbin holder.
3. The bobbin is damaged and doesn’t turn smoothly.
4. The thread is wound loosely on a bobbin.
Page 20
Page 67
Replace the bobbin.
Page 19
The needle breaks
1. The needle is incorrectly inserted.
2. The needle clamp screw is loose.
3. The threads were not drawn to the rear after sewing.
4. The needle is too
fi
ne for the fabric being used.
5. An unsuitable presser foot is used.
Page 17
Page 17
Page 28
Page 17
Use proper foot.
Skipped stitches
1. The needle is incorrectly inserted, bent or blunt.
2. The needle and/or threads are not suitable for the work being sewn.
3. A blue shank needle is not being used for sewing stretch, very
fi
ne fabrics
and synthetics.
4. Threads are not threaded properly.
5. A poor quality needle is used.
Page 17
Page 17
Use stretch stitch
needles.
Page 21, 23
Change the needle.
Seam puckering
1. The thread tension is too tight.
2. The thread is not threaded properly.
3. The needle is too heavy for the fabric being sewn.
4. The stitch length is too long for the fabric.
5. A stabilizer is not used when sewing very
fi
ne fabrics.
Page 26, 27
Page 21, 22
Page 17
Make the stitches
shorter.
Apply a stabilizer.
The fabric is not
feeding smoothly
1. The feed dog is packed with lint.
2. The stitches are too
fi
ne.
3. The feed dog is not raised after “drop feed” sewing.
Page 67
Make the stitches
longer.
Page 16
Loops on the seams
1. The needle thread tension is too loose.
2. The needle is too thick or to
fi
ne for the fabric being used.
Page 26, 27
Page 17
The machine does
not work
1. The machine is not plugged in.
2. Thread has been caught in the hook race.
3. The bobbin winder spindle is not returned to the left after bobbin winding.
Page 10
Page 67
Page 19
Buttonhole sewing
is not sewn properly
1. The stitch density is not suitable for the fabric being sewn.
2. Suitable interface material has not been used for the stretch or synthetic
fabric.
3. The buttonhole lever is not lowered.
Page 43
Use an interfacing.
Page 42
The machine is
noisy
1. Thread has been caught in the hook race.
2. Lint has built up in the hook race or bobbin holder.
Page 67
Page 67
