Duerkopp Adler 367 Instructions d'exploitation télécharger pdf (Page 14)

6.7 Pre-setting the looper-thread tension

Caution: danger of injury

Turn off the main switch.

The looper-thread tension may only be adjusted with the machine

switched off.

Braking spring

The braking spring 1 prevents the bobbin from running on when the

machine halts and when the looper thread is severed and cannot be

adjusted!

Setting the tension spring

–

When the bobbin is full the top of the bobbin housing 2 should

gradually descend under its own weight (see right-hand

illustration).

–

Adjust the tension spring 4 with the regulating screw 3 until the

required tension is reached.

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Duerkopp Adler 367 Instructions d'exploitation Page 14