39
Securing the upper blade
Turn 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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