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Troubleshooting
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Condition
The needle thread
breaks.
The bobbin thread
breaks.
Cause
\
Reference
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 properly
under the presser foot at the beginning of sewing.
6. The threads are not drawn to the rear after previous sewing.
7. The thread is too heavy, or too fine for the needle.
1. The bobbin thread is not threaded properly in the bobbin
case and shuttle.
2. Lint has collected in the shuttle area.
3. The bobbin is damaged and doesn't turn smoothly.
Page 26
Pages 28,30
Page 10
Page 10
Pages 24, 26
Page 34
Page 16
Page 24
Page 74
Change the bobbin
The needle breaks. 1. The needle is incorrectly inserted. Page 10
2. The needle is bent or blunt. Page 10
3. The needle clamp screw is loose. Page 10
4. The needle thread tension is too tight. Pages 28, 30
5. The threads are not drawn to the rear after the previous sewing. Page 34
6. The needle is too fine for the fabric being sewn. Page 16
Skipped stitches 1. The needle is incorrectly inserted. Page 10
2. The needle is bent or blunt. Page 10
3. The needle and/or threads are not suitable for the work being Page 16
sewn.
4. A blue needle is not being used for sewing stretch, very fine Page 16
fabrics or synthetics.
5. The needle thread is not threaded properly. Page 26
6. The wrong needle is being used. Change the needle
Seam puckering 1. The needle thread tension is too tight. Pages 28, 30
2. The needle thread is not threaded properly. Page 26
3. The needle is too heavy for the fabric being sewn. Page 16
4. The stitch length is too long for the fabric. Make stitch shorter
The cloth is not 1. The feed dog is packed with lint. Page 72
feeding smoothly. 2. The stitches are too fine. Make stitch longer
3. The feed dog is not raised after "drop feed" sewing. Page 40
The machine
doesn't work.
Noisy operation
1. The machine is not plugged in.
2. A thread is caught in the shuttle race.
3. The push-clutch is disengaged.
1. There is thread caught in the hook race.
2. Lint has built up in the shuttle or the shuttle race.
Page 6
Page 74
Pages 20, 22
Page 74
Page 74
For customer assistance call or e-mail:
1-877-SEWING-U (1-877-739-4648)
9 am - 4:30 pm, CST, Monday - Friday
support@kenmore-sewing.com
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