34
Condition
Cause
Reference
The needle breaks.
Skipped stitches
Seam puckering
The cloth is not fed
smoothly.
The needle thread
breaks.
The bobbin 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 drawn to
the rear and set properly under the presser foot when
starting sewing.
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 does not turn smoothly.
4. The thread is wound loosely on the bobbin.
1. Needle is incorrectly inserted.
2. The needle is bent or blunt.
3. The needle clamp screw is loose.
4. A proper foot is not used.
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 needle is incorrectly inserted.
2. The needle is bent or blunt.
3. The needle and/or thread are not suitable for the fabric
being sewn.
4. A blue tip needle is not used for sewing stretch, very fine
fabrics and synthetics.
5. The needle thread is not threaded properly.
6. A poor quality needle is 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.
* Use a stabilizer for very fine fabrics.
1. The feed dog is packed with lint.
2. The stitches are too fine.
3. The feed dog was not raised after being lowered.
4. The foot pressure is not adjusted properly.
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Replace the bobbin
Re-wind the bobbin.
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Use proper foot.
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Page 11
Replace the needle
Page15
Page 11
Page 7
Make stitch shorter
Page 32
Make stitch longer
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Page 5
The buttonhole is
not sewn well.
The machine does
not work.
Patterns are distorted.
1. The machine is not plugged in.
2. Thread is caught in the hook race.
3. The handwheel is pulled for bobbin winding.
1. The stitch is not balanced.
1. The stitch density is not suitable for the fabric being sewn.
2. Interfacing is not being used with stretch fabrics.
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Page 9
Page 14
Page 22
Page Use interfacing
Troubleshooting
The needle thread
loops.
1. The needle thread tension is too loose.
2. The needle size is not suitable for the thread.
Page 15
Page 7
Noisy operation
1. The feed dog is packed with lint.
2. Lint has collected in the bobbin holder.
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Page 32
Summary of Contents for Magnolia 7318
Page 1: ...INSTRUCTION MANUAL...
