Pfaff POWERLINE 3741, Instruction Manual

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Adjustment
87
4
.05.11
Thread check spring and thread regulator
Requirement
1. The movement of thread regulator 3 must be completed when the needle point enters
the material (spring stroke approx. 7 mm ).
2. When the thread loop is at its largest while being passed around the hook, the check
thread spring 3 should rise slightly from the rest 1 .
●
Position rest 1 (screw 2 ) in accordance with requirement 1 .
●
Turn sleeve 4 (screw 2 ) to adjust the tension of thread check spring 3 .
●
Position thread regulator 5 (screw 6 ) in accordance with requirement 2 .
For technical reasons it may be necessary to deviate from the indicated spring
stroke or spring tension.
Move thread regulator 5 (screw 6 ) towards (" + ") (= more thread) or (" - ")
(= less thread)
Fig. 4 - 11
2
4
5
6
3
7 mm
1