44
Troubleshooting
Condition Cause Reference
The needle thread
breaks.
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 thread and the bobbin thread are not set under the presser
foot when starting sewing.
6. 7KHWKUHDGLVHLWKHUWRRKHDY\RUWRRÀQHIRUWKHQHHGOH
See pages 20, 24
See pages 20, 34
See page 32
See page 32
See page 30
See page 32
The bobbin thread
breaks.
1. The bobbin thread is not threaded properly in the bobbin case.
2. Lint has collected in the hook race.
3. The bobbin is damaged and doesn't turn smoothly.
See page 18
See page 42
Replace the bobbin.
The needle breaks. 1. The needle is incorrectly inserted.
2. The needle clamp screw is loose.
3. 7KHQHHGOHLVWRRÀQHIRUWKHIDEULFEHLQJXVHG
See page 32
See page 32
See page 32
Skipped stitches 1. The needle is incorrectly inserted, bent or blunt.
2. The needle and/or fabrics are not suitable for the work being sewn.
3. The needle thread is not threaded properly.
4. A poor quality needle is being used.
See page 32
See page 32
See pages 20, 24
Change the needle
Seam puckering 1. The needle thread tension is too tight.
2. The needle 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.
See pages 20, 34
See pages 20, 24
See page 32
Make the stitch
shorter
The cloth is not
feeding smoothly.
1. The feed dog is packed with lint.
2. 7KHVWLWFKHVDUHWRRÀQH
See page 42
Make the stitch longer
Stitches form loops
below the fabric.
1. The needle thread tension is too loose.
2. 7KHQHHGOHLVHLWKHUWRRKHDY\RUWRRÀQHIRUWKHWKUHDG
See pages 20, 34
See page 32
The machine does
not work.
1. The machine is not plugged in.
2. Thread has been caught in the hook race.
3. The presser foot is raised.
See page 8
See page 42
See page 12
The machine does
not run smoothly
and is noisy.
1. Thread has been caught in the hook race.
2. Lint has built up in the hook race or bobbin holder.
3. The machine needs oiling.
See page 42
See page 42
See page 42
