Pfaff 132 Owner's Manual - Page 11

Cause of faults and simple home service 4. Please always remember: many machine troubles may be caused by your not carefully following these working instructions. In many cases, faulty working of your machme can be remedied merely by cleaning and oiling. Machine works heavily 1. Thread ends have become entangled in the hook race - remove all obstructions. 2. Certain working parts of the machine are dry - apply a few drops of oil, 3. The machine is dirty - thoroughly clean it. 4. The wrong kind of oil has been used - clean the mach ine with paraffin. The machine is noisy 1. Thread ends have become entangled in the hook race - remove all obstructions. 18 2. Certain working ports of the machine are dry apply - a few drops of oil. 3. A component part has worked itself loose - retighten it with a screwdriver The upper thread breaks 1. Inferior quality, knotty sewing thread breaks easily - use a better quality. 2. The needle selected is too fine for the thread or ma terial used - use a thicker needle (see page 5: "Relat ive Needle and Thread Sizes"). The upper thread tension is too severe - loosen the setting flange on tensioner (see page 12: "Regulating the ThrecidTensions") 4. The needle is wrong inserted, or it is bent - change the needle (see page 6: Inserting the Needle) 5. The eye of the needle has a knife edge - change the needle. 6. Thread ends or dirt are interfering with the free move ment of the feed dog, resulting in bad feeding of the 19 i. .