Pfaff 230-260 Manual - Page 27

' . .'L; :' I t:. '.!/'' 4 ,, Cd'2Qd (7Q;Jj'g 'qi1atIoii 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. Ca use : Upper tension too loose or lower tension too tight. Sketch II - The threads interlock on the surlace of the fabric. Cause: Upper tension too tight or lower tension too loose. - -. - R 7070 A To check whether he tensions are correctly balanced, luke a closely woven piece of fabric and sew a mw straight and zig zncj seants. If the siroiglit stitches ore tightly drawn in on both sides of the fabric (see scorn sketch If), the tensions are cot ed. Tire surest way to double-check this is by examining a zigzag seam. If the zigzag seam is equally wide on sin face and underside of the Icibric, thot is, it lIre threads are locked exactly at tire zigs Cr rd zags of the seam, tire tension adjustment is correct. 22