Adjustment
11 - 17
11.04.15 Thread check spring on PFAFF 1246 with thread trimmer -900/56
Requirement
The motion of thread controller springs 1 and 6 should cease as soon as the needle point
penetrates the material (= about 7 mm spring deflection).
Due to technical reasons, the length of the thread-check spring path can vary a
little in either direction.
● Turn screw 2 (screw 3) to adjust the spring resistance of thread check spring 1.
● Turn retainer 4 (screw 5) according to the requirement.
● Turn screw 7 (screw 8) to adjust the spring resistance of thread check spring 6.
● Turn retainer 9 (screw 10) according to the requirement.
Fig. 11 - 14a
7 mm
1
4
2
7
6
9
3
8
10
5
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