SQ9100
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FAQs & Troubleshooting |
Incorrect thread tension
When the thread tension is incorrect, check the machine according the following procedure.
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(1) Lower side of fabric (2) Lower thread visible from upper side of fabric (3) Upper thread (4) Upper side of fabric (5) Lower thread |
The lower threading is incorrect.
Return the thread tension dial to “4”, and then refer to Upper thread tightened up to correct the threading.
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(1) Lower side of fabric (2) Upper thread (3) Upper side of fabric (4) Lower thread (5) Upper thread visible from lower side of fabric |
The upper threading is incorrect.
Return the thread tension dial to “4”, and then refer to Tangled thread on wrong side of fabric to correct the upper threading.
The sewing 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.
Turn the thread tension dial to select an appropriate thread tension.
The appropriate thread tension differs according to the type of fabric and thread being used.
When the lower thread is visible from the upper side of the fabric.
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(1) Lower side of fabric (2) Lower thread visible from upper side of fabric (3) Upper thread (4) Upper side of fabric (5) Lower thread |
Turn the thread tension dial to a lower number (toward the left). (Loosen the thread tension.)
When the upper thread is visible from the lower side of the fabric.
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(1) Lower side of fabric (2) Upper thread (3) Upper side of fabric (4) Lower thread (5) Upper thread visible from lower side of fabric |
Turn the thread tension dial to a higher number (toward the right). (Tighten the thread tension.)