Brother International SE-400 Users Manual - English - Page 62

SEWING BASICS Memo z When you finish sewing, remove the bobbin cover and then make sure that the thread is shown as below. If the thread is not shown as below, the thread is not inserted through the tension-adjusting spring of the bobbin case correctly. Reinsert the thread correctly. For details, refer to page 29. ■ Upper thread is too loose If the upper thread is visible from the wrong side of the fabric, the upper thread is too loose. Note z If the upper thread was incorrectly threaded, the upper thread may be too loose. In this case, refer to "Threading the upper thread" (page 32) and rethread the upper thread. e a Memo z If the upper thread is not threaded correctly or the bobbin is not installed correctly, it may not be possible to set the correct thread tension. If the correct thread tension cannot be achieved, rethread the upper thread and insert the bobbin correctly. z The level "4" on the tension dial is a guide for working normal fabrics (medium weight). However, the actual stitch tension you'll want to use will vary according to the fabric and thread you are using, so you should always sew a stitch sample and adjust stitch tension before beginning on the actual piece to be worked. z The machine may stop sewing if tension is set extremely low. This is not a sign that there is anything wrong with your machine. Simply adjust to the correct stitch tension and begin again. b c d a Wrong side of fabric b Right side of fabric c Upper thread d Bobbin thread e The upper thread is visible from the wrong side of the fabric. Turn the thread tension dial to the right to tighten the upper thread. 60