Pfaff hobbylock 794 Owner's Manual - Page 22
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U /cF WLfl Adjusting the differential feed The differential feed prevents interpIy shift. It consists of two teed dogs, arranged one behind the other, which both pick up and move the workpiece at the same time. The feed amount of either feed dog can be set separately. It is possible to have the workpiece moved more by the front teed dog than by the rear one and vice versa. Owing to that very good sewing results are accomplished. Set the differential feed according to the material you wish to process (see table on page 21). The following settings at button 16 are possible: Setting 0.5 = Short stroke of front teed dog, long stroke of rear feed dog Setting - = Same stroke of both feed dogs Setting 1.5 = Long stroke ot front feed dog, short stroke of rear feed dog Setting 2 = Front feed dog set for longest possible stroke, rear feed dog set for shortest possible stroke The differential feed can be set infinitely from 0.5 to 2, also during sewing.