Pfaff hobbylock 783 Owner's Manual - Page 20

L \ N, 1 kf[J) Disengaging the upper knife Remove lint bn 8 Open work support 12 arid looper cover 10 If necessary, loosen screw '38 for axial upper knife hi ock ng Push rotary lenr 27 of the axial upper knife guide full,' to the rrght, hold it, and turn it forwards until pin A engages in the hole nf the knife Now the upper knife is disengiged A (2 Adjusting the seam width The standard scorn width setting is marked with N (3 5 mm). Disengage the upper knife according to the above description The desired seam width is set with adjusting knob 2b The scale on the seam width adjustment knob ranges from 3 to 5. Set the upper knife at its basic position again and close the looper cover. When processing thick fabrics, securely tighten screw 38 for blocking the upper knife, see page 14 Sew a test sewn Note, Atler adjusting the seam width, it may be necessary to re aillust the thread tension.