Troubleshooting |
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Condition |
| Cause |
| Reference |
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The needle thread | 1. | The needle thread is not threaded properly. |
| Page 11 |
breaks. | 2. | The needle thread tension is too tight. |
| Page 15 |
| 3. | The needle is bent or blunt. |
| Page 7 |
| 4. | The needle is incorrectly inserted. |
| Page 7 |
| 5. | The needle thread and the bobbin thread are not drawn to |
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| the rear and set properly under the presser foot when |
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| starting sewing. |
| Page 16 |
| 6. | The fabric is not drawn to the rear when sewing is finished. |
| Page 16 |
| 7. | The thread is too heavy or too fine for the needle. |
| Page 7 |
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The bobbin thread | 1. | The bobbin thread is not threaded properly in the bobbin |
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breaks. |
| holder. |
| Page 10 |
| 2. | Lint has collected in the bobbin holder. |
| Page 32 |
| 3. | The bobbin is damaged and does not turn smoothly. |
| Replace the bobbin |
| 4. The thread is wound loosely on the bobbin. |
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The needle breaks. | 1. | Needle is incorrectly inserted. |
| Page 7 |
| 2. | The needle is bent or blunt. |
| Page 7 |
| 3. | The needle clamp screw is loose. |
| Page 7 |
| 4. | A proper foot is not used. |
| Use proper foot. |
| 5. | The fabric is not drawn to the rear when sewing is finished. |
| Page 16 |
| 6. | The needle is too fine for the fabric being sewn. |
| Page 7 |
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The needle thread | 1. | The needle thread tension is too loose. |
| Page 15 |
loops. | 2. The needle size is not suitable for the thread. |
| Page 7 | |
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Skipped stitches | 1. | The needle is incorrectly inserted. |
| Page 7 |
| 2. | The needle is bent or blunt. |
| Page 7 |
| 3. | The needle and/or thread are not suitable for the fabric |
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| being sewn. |
| Page 7 |
| 4. | A blue tip needle is not used for sewing stretch, very fine |
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| fabrics and synthetics. |
| Page 7 |
| 5. | The needle thread is not threaded properly. |
| Page 11 |
| 6. | A poor quality needle is used. |
| Replace the needle |
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Seam puckering | 1. | The needle thread tension is too tight. |
| Page15 |
| 2. | The needle thread is not threaded properly. |
| Page 11 |
| 3. | The needle is too heavy for the fabric being sewn. |
| Page 7 |
| 4. | The stitch length is too long for the fabric. |
| Make stitch shorter |
| * Use a stabilizer for very fine fabrics. |
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The cloth is not fed | 1. | The feed dog is packed with lint. |
| Page 32 |
smoothly. | 2. | The stitches are too fine. |
| Make stitch longer |
| 3. | The feed dog was not raised after being lowered. |
| Page 5 |
| 4. | The foot pressure is not adjusted properly. |
| Page 5 |
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The machine does | 1. | The machine is not plugged in. |
| Page 4 |
not work. | 2. | Thread is caught in the hook race. |
| Page 32 |
| 3. | The handwheel is pulled for bobbin winding. |
| Page 9 |
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Patterns are distorted. | 1. | The stitch is not balanced. |
| Page 14 |
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The buttonhole is | 1. | The stitch density is not suitable for the fabric being sewn. |
| Page 22 |
not sewn well. | 2. | Interfacing is not being used with stretch fabrics. |
| Page Use interfacing |
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Noisy operation | 1. | The feed dog is packed with lint. |
| Page 32 |
| 2. Lint has collected in the bobbin holder. |
| Page 32 | |
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