Operation Manual

Operation
Operating Instructions 911-210 - 01.0 - 11/2015 23
4.7 Setting the thread regulator
The thread regulator determines the needle thread quantity to be guided
around the hook. The required thread quantity depends on the thickness
of the material to be sewn, thread strength, and stitch length.
Larger thread quantity for
• thick material
• high thread strengths
• large stitch lengths
Lower thread quantity for
• thin material
• low thread strengths
• small stitch lengths
Correct setting
The loop of the needle thread slides at low tension over the thickest point
of the hook. The largest amount of thread is required, and the thread ten-
sioning spring (1) should be pulled approx. 0.5 mm out of the lower end
position.
Fig. 11: Setting the thread regulator
1. Loosen the fastening screw (2).
2. Move the thread regulator (3):
• Lower thread quantity:
Slide the thread regulator (3) to the right
• Larger thread quantity:
Slide the thread regulator (3) to the left
3. Tighten the fastening screw (2).
Risk of injury from moving parts.
Switch off the machine before setting the thread regulator.
WARNING
(1) - Thread tensioning spring
(2) - Fastening screw
(3) - Thread regulator
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