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BA_170-22D_A14_180704_en
Fig. 8
4.7.2
The cloth retainer stroke is set by means of a knurled nut (2)
Setting the plunger limit stop for sewing over cross seams
(Fig. 8)
Fig. 8 which
serves as upper limit stop. To set the stroke place the material (a normal fabric
layer without cross seam). Close the cloth support arm and turn the handwheel
manually until the needle penetrates the fabric. In this position there should be
nearly no space between cloth retainer and fabric layer. If the setting is correct
the automatic plunger should be springy over cross seams so that the needle
does not penetrate the outer layer.
The pressure of the cloth retainer on the fabric layers or the hem edge can be
adjusted through turning the knurled nut (3) Fig. 8. The pressure should be as
low as possible to avoid twist or marks resulting from the pressure between
plunger and cloth retainer, mainly when sewing delicate fabrics as e.g. velvet.
However, the pressure should be high enough to keep the material between
plunger and cloth retainer during the time of needle penetration.
The setting of the plunger limit stop has a considerable influence on the stitch
quality.
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