Singer One Instruction Manual 4 - Page 21

REGULATING NEEDLE-THREAD TENSION The tension dial regulates the degree of tension on your needle thread and lets you select just the right setting for your stitch, thread, and fabric. The numbers on the dial eliminate guesswork in duplicating settings. Correct tension is important because too much or too little will weaken your seams. To find the correct tension setting, make a test on a sample of your fabric. If the fabric puckers or the bobbin thread is pulled to the fabric surface, decrease tension. If the surface or underside stitches look loose, increase tension. • To increase tension, turn dial to a higher number. • To decrease tension turn dial to a lower number. NOTE: The tension dial controls needle-thread tension only. Bobbin-thread tension has been correctly set at the factory, and you do not need to adjust it. SETTING STITCH LENGTH The stitch-length dial regulates the length of both straight and zig-zag stitches. The numbers 6 to 20 represent the number of straight stitches per inch: the higher the number, the shorter the stitch. Generally, shorter stitches are best for lightweight fabric; longer ones for heavy fabric. Curved seams, bias-cut seams, and scallops require short straight stitches (15 to 20) for elasticity and smooth contours. Bound buttonholes should be sewn with a short stitch for durability and strength. • To set stitch length, turn dial to setting desired. • For reverse stitching, press dial all the way down and hold in place. Regulating Needle-thread Tension Too Loose #.ncreasej Too Tight ,rDecreas.e) Correct Setting Stitch Length Stitch-Length Dial FINE 1. 20 -16 Reverse Stitching 15