Operation
Operating Instructions 967 - 02.0 - 11/2016 37
Main tensioner
The main tensioner (2) determines the normal thread tension 
during sewing.
Proper setting
The main tensioner (2) should be set as low as possible. 
The thread interlacing should be exactly in the middle of the 
sewing material.
Disturbance
Due to excessively high tension:
• Ruffling on the seam
• Thread breaking
• Needle thread pops out of the tensioning plate
3. Press the button for the thread tension (3) to deactivate the 
additional tensioner.
Machines fitted with ECO equipment do NOT possess this 
feature
 The additional tensioner is active when the button is lit.
Additional tensioner
The additional tensioner (1) increases the needle thread tension 
during sewing, e.g. for thickened seams.
Proper setting
The additional tensioner (1) must always be set lower than the 
main tensioner (2).
Disturbance
Due to excessively high tension:
• Ruffling on the seam
• Thread breaking
• The needle thread pops out of the tensioning plate