USEFUL FUNCTIONSSewing Basics452Adjusting the Thread TensionThe default thread tension, which is automatically set,can normally be used regardless of the type of thread orfabric being sewn. However, with some fabric andthread combinations, the thread tension may need to beadjusted.■ Correct Thread TensionThe upper thread and the bobbin thread shouldcross near the center of the fabric. If the threadtension is incorrectly set, the seam may have a poorfinish or the fabric may pucker.a Wrong side of fabricb Surface of fabricc Upper threadd Bobbin thread■ Upper Thread Is Too TightIf the bobbin thread can be seen on the surface ofthe fabric, press . Each press of the key reducesthe setting and decreases the upper thread tension.a Surface of fabricb Upper threadc Bobbin threadd Locks appear on the surface of the fabric.■ Upper Thread Is Too LooseIf the upper thread can be seen on the wrong side ofthe fabric, press . Each press of the key increasesthe setting and tightens the upper thread tension.a Wrong side of fabricb Locks appear on the wrong side of the fabric.c Upper threadd Bobbin threadPress to return the setting to its default.USEFUL FUNCTIONSAutomatic Reinforcement StitchingAfter selecting a stitch, turn on the automaticreinforcement stitching setting before sewing, and themachine will automatically sew reinforcement stitches(or reverse stitches, depending on the stitch) at thebeginning and end of sewing.a Select a stitch.b Press to select the automaticreinforcement/reverse stitching setting.→ The key appears as .abc dab cdabc dMemoThe automatic reinforcement/reverse stitching settingis already selected with some stitches, such asbuttonholes and bar tacks.
