Adjusting the needle thread tension
62 Service Instructions 867 - 04.0 - 10/2019
13 Adjusting the needle thread tension
13.1 Adjusting the needle thread regulator
The needle thread regulator determines the tension applied to guide
the needle thread around the hook. The required tension depends on
the thickness of the sewing material, thread strength, and stitch length.
Lower thread tension for
• thin sewing material
• low thread strengths
Greater thread tension for
• thick sewing material
• high thread strengths
Proper setting
The loop of the needle thread slides at low tension over the thickest point
of the hook, without forming loops or snagging.
Fig. 47: Adjusting the needle thread regulator
1. Open the throat plate slides ( p. 18).
2. Turn the handwheel and observe the cycle of the needle thread around
the hook.
3. Loosen the screw (1).
CAUTION
Risk of injury from moving parts!
Crushing possible.
Switch off the machine before adjusting the needle
thread tension.
(1) - Screw (2) - Needle thread regulator
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