Pfaff hobbylock 774 Owner's Manual - Page 16
adjustments, Maintenance
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D. Some adjustments / Maintenance a. Adjusting the seam width Standard seam width is 3.5 mm. It can be adjusted from 3.0mm to 5.0mm when using the different materials. 1. Open the side cover and looper cover. Push the upper knife control knob firmly to the right and, whilst maintaining pressure, turn the knob and knife towards you downwards, releasing the pressure as the knife is lowered. To raise the knife, simply reverse the oper ations above. 2. Adjust the required seam width by turning the dial. Wide Narrow seam width seam width After adjusting the seam width, it may be necessary to reset the thread tension. b. Adjusting the stitch length 1. To change the stitch length, open the side cover. 2. Loosen the feed regulator nut. 3. Align the feed regulator nut and the number on the feed regulator. To make the stitch length longer move the nut to a higher number. To make the stitch length shorter select a lower number. 4. After making the adjustment, tighten the feed regulator nut and close the side cover. 15