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Symptom | Probable Cause | Remedy | Reference |
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The needle breaks. | The upper thread was not | Correct the upper threading. | page 32 |
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threaded correctly. |
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| The upper thread was not |
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| threaded correctly (for example, |
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| the spool is not installed correctly, | Correct the upper threading. |
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| the spool cap is too big for the | Use the spool cap that best fits the | page 31 |
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| spool being used, or the thread | size of the spool being used. |
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| has come out of the needle bar |
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| thread guide.) |
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| There are knots or tangles in the | Remove any knots or tangles. | - |
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| thread. |
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| The selected needle is not | Select a needle that is appropriate for |
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| appropriate for the thread being | page 39 |
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| the type of thread being used. |
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| used. |
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| The upper thread tension is too | Loosen the upper thread tension. | page 62 |
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| tight. |
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The upper thread | The thread is tangled, for example, | Remove the tangled thread. If the |
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breaks. | thread is tangled in the bobbin case, | page 176 |
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in the bobbin case. |
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| clean the race. |
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| The needle is bent or blunt. | Replace the needle. | page 41 |
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| The needle is incorrectly installed. | Correctly install the needle. |
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| The area around the hole in the | Replace the presser foot. |
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| presser foot is scratched, or has a | Contact your dealer or the nearest | - | 5 |
| burr on it. | authorized service center. |
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| The bobbin case is scratched, or | Replace the bobbin case. |
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| Contact your dealer or the nearest | - |
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| has a burr on it. |
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| authorized service center. |
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| Incorrect bobbins will not work |
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| A bobbin designed specifically for | properly. Only use a bobbin | page 22 |
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| this machine is not used. | designed specifically for this |
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| machine. |
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| The thread is not passed through | Correctly pass the thread through the |
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| the | page 24 |
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| correctly. |
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Bobbin thread |
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| Move the sewing speed controller to |
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does not wind |
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Bobbin spins slowly. | the right (so that the speed will be | page 25 |
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neatly on the |
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| fast). |
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bobbin. |
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| The thread that was pulled out | Wind the thread that was pulled off |
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| was not wound onto the bobbin | around the bobbin five or six times | page 25 |
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| correctly. | clockwise. |
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| The bobbin thread is incorrectly | Correctly install the bobbin thread. | page 27 |
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| installed. |
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The lower thread is | The bobbin is scratched or does |
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not rotate smoothly, or has a burr | Replace the bobbin. | - |
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tangled or breaks. |
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on it. |
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| The thread is tangled. | Remove the tangled thread and clean | page 176 |
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| the race. |
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Troubleshooting 179