Pfaff coverstyle 4850 Owner's Manual - Page 37

Setting the seam width, Illustration A, Illustration B

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Setting the seam width The required seam width can be adjusted anywhere between 3.5 and 6 mm by turning the adjusting knob for seam width 13. The setting can be seen through the viewing window 14. The two thread chainstitch is sewn with a clearance of 6.5 to 9 mm. Illustration A: Should loops project out of the workpiece, move the movable upper blade 23 to the right by turning the seam width adjusting knob upwards. Illustration B: Should the stitching be too tight, move the movable upper blade 23 to the left by turning the seam width adjusting knob downwards. Note: The top row of numbers on the dial refers to the seam width of a standard 3 thread overedge seam. The width settings 3.5 mm through 6.0 mm are measured from needle R1 to the outer fabric edge. This width is decreased by 2.0 mm when only using needle R2, i. e. you have a seam width that is completely adjustable from 1.5 mm to 4.0 mm. The bottom row of numbers refers to the seam of the 4 or 5 thread safety stitch seam. The width settings 6.5 mm through 9 mm are measured from needle L2 to the outer fabric edge. Measurements are shown in metric and fractions. 33

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33
Setting the seam width
The required seam width can be adjusted
anywhere between 3.5 and 6 mm by turning the
adjusting knob for seam width
13
. The setting
can be seen through the viewing window
14
.
The two thread chainstitch is sewn with a clea-
rance of 6.5 to 9 mm.
Illustration A:
Should loops project out of the
workpiece, move the movable upper blade
23
to the right by turning the seam width adjus-
ting knob upwards.
Illustration B:
Should the stitching be too
tight, move the movable upper blade
23
to the
left by turning the seam width adjusting knob
downwards.
Note:
The top row of numbers on the dial refers to the seam width of a standard 3 thread overedge
seam. The width settings 3.5 mm through 6.0 mm are measured from needle R1 to the outer fabric
edge. This width is decreased by 2.0 mm when only using needle R2, i. e. you have a seam width
that is completely adjustable from 1.5 mm to 4.0 mm.
The bottom row of numbers refers to the seam of the 4 or 5 thread safety stitch seam. The width
settings 6.5 mm through 9 mm are measured from needle L2 to the outer fabric edge.
Measurements are shown in metric and fractions.