Pfaff 332 Owner's Manual - Page 23

Ctrett 7encion 7 9 u1aZ tion Balanced tensions are essential for sewing. If your tension is correct, you will have perfect seams as sketched (Ill) below. Sketch I - The threads interlock on the underside of the fabric. Cause: Upper tension too loose or lower tension too tight. Sketch II - The threads interlock on the surface of the fabric. Cause: Upper tension too tight or lower tension too loose. V A R 7374 To check whether the tensions are correctly balanced, 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 fobric (see seam sketch Ill), the tensions ore correct. The surest way to double-check this is by examining a zigzag seam. If the zigzag seam is equally wide on surface and underside of the fabric, that is, if the threads ore locked exactly at the zigs and zags of the seom, the tension adjustment is correct. 22