Setting The Tension Regulator - DURKOPP ADLER 381 Operating Instructions Manual

6.4 Setting the Tension Regulator

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2
3
4
The needle thread quantity required for the hook is adjusted with the tension regulator 2.
The setting is dependent on the following factors:
A prescisely set tension regulator assures an optimal sewing result at the lowest
possible needle thread tension.
With a correct setting, the needle thread loop must glide over the thickest point of the
hook with little tension.
In position " 1 " of the tension regulator the maximum thread quantity is released.
In position " 5 " of the tension regulator the minimum thread quantity is released.
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Loosen screws 1 and 3.
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Alter the position of the tension regulator 2.
The scale above the tension regulator serves as a setting aid.
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Tighten screws 1 and 3.
Setting note:
For a correct setting of the tension regulator 2 the following condition must be met:
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When the greatest thread quantity is required, the thread controller spring 4 must
be pulled approx. 0.5 mm up out of its upper end position.
This is the case when the needle thread loop passes the maximum diameter of the
hook.
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Caution Risk of Injury !
Set tension regular 2 only with the sewing machine turned
off.
- Material thickness
- Yarn characteristics
- Stitch length