4141
Securing the upper blade
Switch off the electrical power
It is recommended to secure the movable
upper blade 23 before sewing heavy fabrics.
Raise the needle(s) to its highest position and
open the swivel plate. Tighten the screw fully
using the Allen key. This screw should always
be slightly loosened again after sewing heavy
fabrics.
Note:
The seam width can no longer be adjusted
once the upper blade is secured.
Setting thread tension
The following pages contain directions for setting thread tensions for all programs. Adjust
the tension by turning the tensioning wheel until the dot marker is at the desired setting.
The settings for adjusting thread tension are recommendations. Fabric type, thread quality
and needle gauge will infl uence seam results. Always sew off a test seam onto a piece of
scrap fabric and check the thread loops. Adjust the thread tension if necessary.
Adjusting the tension settings is described on pages 46 to 56.
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