Symptom | Probable cause | Remedy | |||
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5. Lower thread is visible on the top | 1. | The upper thread tension is too strong. | 1. | Decrease the upper thread tension | |
| surface of the fabric |
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| using the upper thread tension dial. |
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| 2. | The upper or lower thread is not | 2. | Thread the upper and lower threads |
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| threaded correctly. |
| correctly. |
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| 3. | The thread has been threaded | 3. | Remove the bobbin, reset the bobbin |
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| incorrectly through the inner rotary |
| properly and pull the bobbin thread |
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| hook. |
| through the channel. |
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| 4. | A thread other than the designated | 4. | Replace with the designated lower |
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| lower embroidery thread is being used. |
| embroidery thread. |
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6. | Upper thread is loose | 1. | The upper thread tension is too weak. | 1. | Increase the upper thread tension |
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| using the upper thread tension dial. |
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| 2. | The upper or lower thread is not | 2. | Thread the upper and lower threads |
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| threaded correctly. |
| correctly. |
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| 3. | Threads other than the designated | 3. | Replace with the designated upper and |
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| upper and lower embroidery thread are |
| lower embroidery threads. |
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| being used. |
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7. | Embroidered pattern is out of shape | 1. | The fabric has been placed in the | 1. | Place the fabric in the embroidery |
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| embroidery frame incorrectly. |
| frame correctly. |
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| 2. | The embroidery frame has been | 2. | Attach the embroidery frame to the |
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| attached to the machine incorrectly. |
| machine correctly. |
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| 3. | Thin or stretch fabric is being used with | 3. | Attach stabilizer fabric. |
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| no stabilizer fabric attached. |
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| 4. | Threads other than the designated | 4. | Replace with the designated upper and |
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| upper and lower embroidery thread are |
| lower embroidery threads. |
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| being used. |
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| 5. | The thread is tangled. | 5. | Cut and remove the tangled threads |
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| inside the rotary hook using scissors. |
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| Clean the race or inner rotary hook. |
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8. | Threading is not possible | 1. | The needle is installed incorrectly. | 1. | Install the needle correctly. |
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| 2. | The needle threader lever will not turn. | 2. | Turn the balance wheel to raise the |
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| needle to its highest position. |
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9. Thread is not cut during automatic | 1. | Thread has accumulated around the | 1. | Remove the needle plate and clean | |
| thread cutting. |
| thread cutting knife. |
| away the accumulated thread. |
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63
