Pfaff 362-261 Owner's Manual - Page 21
Correct, Tension, Regulation
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R8150 Correct Tension Regulation Balanced tensions are essential for sewing. If your tension is correct, you will have perfect seams as sketched below (Ill). Sketch I - The threads interlock on the underside of the fabric. Cause: Upper tension too loose or lower tension too tight. Sketch II - The threods interlock on the surface of the fabric. Cause: Upper tension too tight or lower tension too loose. V A To check whether the tensions are correctly bal anced, take a closely woven piece of fabric and sew a few straight and zigzag seams. If the straight stitches are tightly drawn in on both sides of the fabric (see seam sketch Ill), the tensions are correct. The surest way to double-check this is by eyamining a zigzag seam. If the zigzag seam is equally wide on surface and underside of the fabric, that is, if the threads are locked exactly at the zigs and zags of the seam, the tension adjust ment is correct. 20 --1 - - - - -- I I j. 1 I
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