Brother International Innov-is 4750D Operation Manual - Page 62
Setting the Thread Tension, CAUTION
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STITCH SETTINGS Example: Press to shorten the stitch length. ■ Proper Thread Tension The upper and lower threads should cross near the center of the fabric. If the thread tension is not properly set, the seam may have a poor finish or the fabric may pucker. a b → The value in the display gets smaller. Press to lengthen the stitch length. → The value in the display gets bigger. Memo • Using the Image Key, you can check changes made to the stitch. • Press to return the stitch length to the original setting. CAUTION If the stitches get bunched together, lengthen the stitch length and continue sewing. Do not continue sewing without lengthening the stitch length. Otherwise, the needle may break and cause injury. c d a Wrong side b Surface c Upper thread d Bobbin thread ■ Upper Thread is Too Tight If the bobbin thread can be seen on the surface of the fabric, press . c b d a a Bobbin thread b Upper thread c Surface d Locks appear on surface of fabric ■ Upper Thread is Too Loose If the upper thread can be seen on the wrong side of the fabric, press . Setting the Thread Tension You may need to change the thread tension, depending on the fabric and thread being used. Follow the steps below to make any necessary changes. c d a b a Upper thread b Bobbin thread c Wrong side d Locks appear on wrong side of fabric Memo • Press to return the thread tension to the original setting. 50