Pfaff hobbylock 788 Owner's Manual - Page 29
rolled-hem - lower looper
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Rolled hem with polyester thread Preparation of the sewing machine: Needle: Sewing foot: Seam width: Stitch length: Thread: remove left needle / insert right needle engage rolled-hem foot ,,R" from 3.0 to 4.0 mm (depending on material) from 1 .0 to 2.0 mm (short stitch length) polyester thread 120-140 for green, red and yellow thread tensions Threading path: 1 right looper, red path 2. left looper, yellow path 3. needle thread, green path polyester thread polyester thread polyester thread For threading of needle and loopers, see pages 7 to 11. Tension setting: fold-over 3-thread hem. Fig. 1 Red thread tension, right looper approx. ,,N" Yellow thread tension, left looper ÷5 Green thread tension, needle thread approx. ,,N" 3-thread hem, Fig. 2 approx. + 5 approx. ,,N" to - 1 approx. ,,N" to + 1 Depending on material and thread, the respective thread tension must be set higher or lower. Rolled hem, sewn with bulk thread: This hem requires three threads, one bulk thread and two polyester threads 120 -140. Preparation of the machine, as described above. Thread: bulk thread - red tension polyester thread 120-140 for green and yellow tensions Threading path: 1. right looper, red path 2. left looper, yellow path 3. needle thread, green path bulk thread polyester thread 120-140 polyester thread 120-140 For threading of needle and loopers, see pages 7 to 11. Tension setting: Red thread tension, right looper Yellow thread tension, left looper Green thread tension,, needle thread fold-over 3-thread hem, Fig. 1 approx. ,,N" to -3 approx. + 5 approx. N" 3-thread hem, Fig. 2 approx. ,,N" to +5 approx. ,,N" approx. ..N" Note: Rolled hems can also be sewn with two bulk threads and one polyester thread. The bulk threads must then be threaded in the left and right looper. Depending on material and thread, the respective thread tension must be set higher or lower. 27