Innov-is XJ1
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FAQs & Troubleshooting |
Incorrect thread tension
When the thread tension is incorrect, check the machine according the following procedure.
1. Check that the machine is threaded correctly.
- The bobbin thread is visible from the right side of the fabric.
- The upper thread appears as a straight line on the right side of the fabric.
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(1) Wrong side of fabric (2) Bobbin thread visible on right side of fabric (3) Upper thread (4) Right side of fabric (5) Bobbin thread |
The bobbin threading is incorrect.
Return the upper thread tension to the standard setting, and then correct bobbin threading.
For details, refer to “ How do I set the bobbin ? ”.
- The upper thread is visible from the wrong side of the fabric.
- The bobbin thread appears as a straight line on the wrong side of the fabric.
- The stitching on the wrong side of the fabric is loose or has slack.
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(1) Wrong side of fabric (2) Upper thread (3) Right side of fabric (4) Bobbin thread (5) Upper thread visible from wrong side of fabric |
The upper threading is incorrect.
Return the upper thread tension to the standard setting, and then correct the upper threading.
For details, refer to “ How do I thread my machine ? ”.
2. Check that a needle and thread appropriate for the fabric are being used.
A needle and thread appropriate for the fabric are not being used.
The machine needle that should be used depends on the type of fabric sewn and the thread thickness.
If a needle and thread appropriate for the fabric are not being used, the thread tension will not be adjusted correctly, causing wrinkles in the fabric or skipped stitches.
* Refer to ”Combination of fabric, thread and needle” to check that a needle and thread appropriate for the fabric are being used.
3. Select the appropriate setting on the thread tension.
An appropriate upper tension is not selected.
Adjust the upper thread tension to select an appropriate thread tension.
- The appropriate thread tension differs according to the type of fabric and thread being used.
- Adjust the thread tension while test sewing on a piece of scrap fabric that is the same as that used in your project.
- If the upper threading and bobbin threading are incorrect, the thread tension cannot be adjusted correctly. Check the upper threading and bobbin threading first, and then adjust the thread tension.
When the lower thread is visible on the upper side of the fabric.
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(1) Wrong side of fabric (2) Bobbin thread visible on right side of fabric (3) Upper thread (4) Right side of fabric (5) Bobbin thread |
Set the upper thread tension to a lower number. (Loosen the thread tension.)
Touch 
to loosen the upper thread.
When the upper thread is visible on the lower side of the fabric.
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(1) Wrong side of fabric (2) Upper thread (3) Right side of fabric (4) Bobbin thread (5) Upper thread visible from wrong side of fabric |
Set the upper thread tension to a higher number. (Tighten the thread tension.)
Touch 
to tighten the upper thread.
