Pfaff hobbylock 756 Owner's Manual - Page 45

F move 26. TROUBLESHOOTING CHART Problem Fabric does not feed well Needle breaks Thread breaks Stitches skip Irregular stitches Fabric puckers Irregular trimming Fabric jams Machine does not operate Solution Lengthen stitch length - - Increase presser foot pressure for heavy weight fabric Decrease presser foot pressure for light weight - fabric - Insert needle correctly - Do not pull fabric while sewing Tighten needle set screw - - Use a larger needle on heavy fabrics Check threading - Check for tangled or caught thread - Insert needle correctly - Insert new needle, current needle may be bent or - have a blunt point Use a high quality thread - - Loosen thread tension - Insert new needle, current needle may be bent or have a blunt point Tighten needle set screw - - Insert needle correctly Change type or size of needle - Check threading - - Increase presser foot pressure Use a high quality thread - Balance thread tension - - Check for tangled or caught thread - Check threading Loosen thread tension - Check for tangled or caught thread - Use high quality light weight thread - Shorten stitch length - Decrease presser foot pressure for light weight fabrics Check alignment of knives - Replace one or both knives - Close looper cover before sewing Check for tangled or caught thread - Compress thick layers of fabric with conventional - machine before sewing with overlock Connect machine to power source - Page 23 38 38 8 18 8 39 10- 17 22 8 8 39 19 -21 8 8 8 4 10- 17 38 39 19- 21 22 10-17 19- 21 22 39 23 38 41 41 6 22 6 43