Pfaff hobby 808 Owner's Manual - Page 25

4 Cause: Remedy: 4. Seam is not uniform Tension out of adjustment. Thread too thick, knotty or hard. Bobbin thread wound unevenly. Kinks appear on top and bottom of material. 5. Machine feeds irregularly or not at all Lint has accumulated between tooth rows of feed dog. Feed dog dropped. (Reverse-feed control is at left.) Check upper and lower tensions. Use first-class thread only. During bobbin winding, do not hold thread in hand, but pass it through thread retainer stud. Thread machine properly and check both tensions. Remove needle plate and clean out lint. Flick reverse-feed control to the right. 6. Machine works heavily Thread ends in hook raceway. Remove thread ends and put a drop of oil into hook raceway. 7. Machine does not start Motor is disengaged. Turn the motor disengaging switch until the knob points downwards.