Pfaff 6 Owner's Manual - Page 17

Uneven Stitches Cause: ension tegulated improperly Thread :00 heavy, knotty, or stiff. Bobbin thread unevenly wound. Race too dry. Odd thread accumulated between the thread tension oiscs. Noisy Running Cause: Lint or odd thread accumulated in the snuttle race. Remedy: Adiusl tension in ccCOrOcflce with Sections 10 ana Ii. Use only rst'cIass threca. For wrnding do not run the thread over your finger but over the winder thread tens on. Aoply one or wo drops of oiL Loosen tension and remove thread. 32 Remedy: Clean and oil shuttle as instructed in Sections 18 and 19. Needle plate improperly inserted after removal, Feed aog jams in needle plate cutout. Unscrew needle plate and, if necessary, also feed dog, then readjust. Machine has run dry or was oiled with kerosene. 33 inaccurate Feeding Cause: Feed dog set too ow so that its teeth Oo nor come uo sufficiently above needle ølcte level. Clean and oil macnine as instructed in Sections 18 and 19. Remedy: Adjust position of eed dog so that it snows a full tooth 000ve me needle plate. Lint cn huff accumulated between tooth rows, Take off needle plate and remove lint with a pointed instrument. insufficient amount of pressure exerted 'n material. increase aressure oy tightening screw V iSee Section 161. Note: If macnine does nor feed at length lever in zero position. all, see whether feed dog is lowered or stitch 34