Symptom | Probable Cause | Remedy | Reference |
|
|
|
|
|
|
| The upper thread was incorrectly |
|
|
|
| threaded (for example, the spool is |
|
|
|
| incorrectly installed or the thread has | Correct the upper threading. | page 20 |
|
| come out of the needle bar thread |
|
|
|
| guide). |
|
|
|
|
|
|
|
|
| There are knots or tangles in the | Remove any knots or tangles. | – |
|
| thread. |
| ||
|
|
|
| |
|
|
|
|
|
| The selected needle is not | Select a needle that is appropriate for | page 30 |
|
| appropriate for the thread being used. | the type of stitch being used. |
|
|
| The upper thread tension is too tight. | Loosen the upper thread tension. | page 49 |
|
|
|
|
|
|
| The thread is tangled, for example, in | Remove the tangled thread. If the | page 95 |
|
The upper thread | the bobbin case. | thread is tangled in the bobbin case, |
| |
clean the race. |
|
| ||
breaks. |
|
|
| |
|
|
|
| |
| The needle is bent or blunt. | Replace the needle with a new one. | page 31 |
|
|
|
|
|
|
| The needle is incorrectly installed. | Correctly install the needle. | page 31 |
|
|
|
|
|
|
| The area around the hole in the | Replace the needle plate. |
|
|
| Contact your dealer or the nearest | – |
| |
| needle plate is scratched. |
| ||
| authorized service center. |
|
| |
|
|
|
| |
|
|
|
|
|
| The area around the hole in the | Replace the presser foot. |
| 4 |
| Contact your dealer or the nearest | – | ||
| presser foot is scratched. | |||
| authorized service center. |
| ||
|
|
|
|
|
|
| Replace the bobbin case. |
|
|
| The bobbin case is scratched. | Contact your dealer or the nearest | – |
|
|
| authorized service center. |
|
|
|
|
|
|
|
|
| Bobbins from older models, which |
|
|
The upper thread | A bobbin designed specifically for | have a different thickness, will not |
|
|
work properly. Only use a bobbin | page 15 |
| ||
breaks. | this machine is not used. |
| ||
designed specifically for this |
|
| ||
|
|
|
| |
|
| machine. |
|
|
|
|
|
|
|
| The bobbin thread is incorrectly | Correct the bobbin threading. | page 18 |
|
| installed. |
| ||
|
|
|
| |
|
|
|
|
|
| The bobbin thread is incorrectly | Correctly wind the bobbin. | page 15 |
|
| wound. |
| ||
|
|
|
| |
|
|
|
|
|
| There are scratches on the bobbin or | Replace the bobbin. | – |
|
The lower thread | it doesn’t rotate properly. |
| ||
|
|
| ||
is tangled or |
|
|
|
|
| Remove the tangled thread and clean |
|
| |
breaks. | The thread is tangled. | page 95 |
| |
|
| the race. |
|
|
|
| Bobbins from older models, which |
|
|
| A bobbin designed specifically for | have a different thickness, will not |
|
|
| work properly. Only use a bobbin | page 15 |
| |
| this machine is not used. |
| ||
| designed specifically for this |
|
| |
|
|
|
| |
|
| machine. |
|
|
|
|
|
|
|
107