Pfaff hobbylock 794 Owner's Manual - Page 33

ewing problems and solutions hs machine is easy to operate and there are no difficult adjustments to be made. Problems, similar the ones described below, occur because of simple adjustment errors. They can easily be corrected the solutions offered. Problem Cause Solution Material is not fed correctly Needle breakage Thread breakage Skipped stitches Incorrect stitch formation Puckered seams Sewing foot pressure too weak Turn sewing foot pressure screw clockwise to increase pressure. Needle bent or point damaged. Needle not correctly inserted. Material pulled Insert new needle. Insert new needle correctly (see page 26). Do not pull or push material during sewing. Incorrectly threaded Thread has caught Thread tension too tight Needle not correctly inserted Incorrect needle used Thread correctly (see pages 7-11). Check whether thread catches at the reel stand, etc. Regulate tension, (page 15, 16). Insert needle correctly (page 26). Use needle system DB x 1 (or 1738). Needle bent or damaged Needle not correctly inserted Incorrect needle used Incorrectly threaded Sewing foot pressure too weak Insert new needle. Insert needle correctly (page 26). Use needle system DB x 1, or 1738 Thread correctly (pages 7-11). Increase sewing foot pressure. Incorrect setting of thread tensions Set thread tensions correctly (pages 15, 16). Thread tension too tight Thread has caught due to incorrect threading Reduce thread tension (espe cially for light materials) pages 15, 16. Thread correctly (pages 7-11). 31