Pfaff 230-260 Manual - Page 36

Accumulations of lint packed between feed teeth. Take off needle plate and remove Jint with a tift brush. 6. Machine Works Heavily - Cause: Motor belt is loose and slips, or has shrunk and couses excessive pressure on bearings. Hook raceway forks oil or is obstructed by pieces ol thread. Mechanism clogged by inferior oil. Bobbin winder working while sewing. (When a bobbin is not being tilled) Snarled thread between balance wheel and bushing. Remedy: Loosen or tighten motor belt by adjusting idler. Clean and oil hook raceway. Use only Plait sewing machine oil - never salad oil or glycerine. Stop bobbin winder. Unwind and remove thread. Thread Jamming If thread lams iii the sewing hook mechanism arid blocks it, proceed as follows: The thread will come out more easily if you put a few drops of oil or cleaning fluid into the hook raceway. Tighten the slop motion knob. Move use balance wheel away from you. 0 Take the end of the thread and pull it out while rocking the balance wheel. If thread is still jammed, call your Pfaff dealer for help. Thread jamming can be avoided by following the instructions on pages ( and 5. 31