Pfaff 6 Owner's Manual - Page 16

Cause: -- --I Thread breaking may occur for any of tne aforementioned reasons, Remedy: See preceding page. Tnreod tension too rign:. Use of inferior or knotty tnrecd. Race dry or 000 threads jamming in the race Adjust upper and lower tensions r accordance with Sections 10 and 11 Oty first-rate sewing machine thread or a good quaiity of silk should be usec. Clean cnd oil race in accordance witn Sections 18 ano 19. Binding of Machine Cause: Remedy: Driving belt too long and slips o. or too short causing excessive pressure on the bearings. Shuttle race dry or aostructed by odd thread. Mecrianism clogged up oy inferior o 1 .i Shorten belt or inser a oiece for lengthening. Cut the oelt straigrit, not on he DiCS. Cean and oil snuttle race. Use only PFAFF sewing macnine oil. never salad Oil or glycerine. The feed dog jams in the needle plate cutout. Winder engaged while sewing. and readjust properly. Disengage winder. Thread snarled up between oclance wneel and bushing. Remove and unwind thread with the aid of a thin needle. Needle Breakage 30 Cause: Needle bent and of the shuttle. struck by the point Needle too thin or thread too thick, Needle threaa tension oending needle. too right, thus Needle cue to pusned. Dent aria strikes needle plate the material oeing pulled or Boabin case inserted irnDroperlv. 31 Remedy: Replace needle damage. at on ce to prevent more Study Needle page 4. and Thread Chart on Either ease needle. tension or use a thicker Do not force the feeding cease pressure on thicker and so assure better feeding. motion. materict When inserting in until it ciicks the bobbin case, push into position oudioly. it