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Setting the needle thread tension
12 Setting the needle thread tension
12.1 Setting 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.
Cover
• Throat plate slide ( p. 14)
Fig. 40: Setting the needle thread regulator
To set the needle thread regulator:
1. Turn the handwheel and observe the cycle of the needle thread around
2. Loosen the screw (2).
3. Moving the needle thread regulator
4. Tighten the screw (2).
Service Instructions 667 - 00.0 - 04/2016
the hook.
• Reduce tension: slide to the left
• Increase tension: slide to the right
(1) - Needle thread regulator
(2) - Screw
1 2 3 4
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