Innov-is XV
FAQ et Diagnostic |
Incorrect thread tension
When the thread tension is incorrect, check the machine according the following procedure.
(1) Lower side of fabric (2) Lower thread visible on upper side of fabric (3) Upper thread (4) Upper side of fabric (5) Lower thread |
The lower threading is incorrect.
Adjust the upper thread tension and then refer to Upper thread tightened up.
(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.
Adjust the upper thread tension 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.
Adjust the upper thread tension to select an appropriate thread tension.
When the lower thread is visible on the upper side of the fabric.
(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 |
Set the upper thread tension to a lower number. (Loosen the thread tension.)
When the upper thread is visible on the lower side of the fabric.
(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 |
Set the upper thread tension to a higher number. (Tighten the thread tension.)