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Condition
The needle thread
breaks.
The bobbin thread
breaks.
The needle
breaks.
Screen is not
clear.
Skipped stitches
Seam puckering
The cloth is not
feeding smoothly.
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 thread and the bobbin thread are not drawn to the
rear when sewing is started.
6. The fabric is not drawn to the rear when sewing is finished.
7. The thread is too heavy or too fine for the needle.
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 doesnÕt turn smoothly.
1. The needle is incorrectly inserted.
2. The needle is bent or blunt.
3. The needle clamp screw is loose.
4. The needle thread tension is too tight.
5. The fabric is not drawn to the rear when sewing is finished.
6. The needle is too fine for the fabric being sewn.
1. The sharpness of the liquid crystal display is not adjusted prop-
erly.
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
finefabrics or synthetics.
5. The needle thread is not threaded properly.
6. The presser foot pressure is not strong enough.
7. The wrong needle is being used.
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.
5. The presser foot pressure is not correctly adjusted.
1. The feed dog is packed with lint.
2. The presser foot pressure is too weak.
3. The stitches are too fine.
4. Feed dogs are lowered.
5. The correct presser foot is not being used.
Reference
Page 19
Page 22
Page 14
Page 14
Page 21
Page 23
Page 15
Page 18
Page 64
Change the bobbin
Page 14
Page 14
Page 14
Page 22
Page 23
Page 15
Page 4
Page 14
Page 14
Page 15
Page 15
Page 19
Page 13
Change the needle
Page 22
Page 19
Page 15
Make stitch denser
Page 13
Page 64
Page 13
Make stitch coaser
Page 13
Page 13
Troubleshooting
67


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