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Pfaff 3371-1 series

Pfaff 3371-1 series
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Adjustment
14 - 24
14.25 Thread check spring and thread regulator
Requirement
1. The thread check spring 1 should have a 6 – 8 mm stroke.
2. Screw 4 should be positioned in the centre of the slot of thread regulator 3.
Adjust thread check spring 1 (screw 2) in accordance with requirement 1.
Move thread regulator 3 (screw 4) in accordance with requirement 2.
Turn pin 5 to adjust the thread spring resistance. All settings of the thread check
spring 1 depend on the material and might have to be corrected to achieve the
desired result.
Fig. 14 - 21
3
1
4
5
2

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