Thread Check Spring On Pfaff 1246 With Thread Trimmer -900/56 - Pfaff 1245 Instruction Manual

11.

Thread check spring on PFAFF 1246 with thread trimmer -900/56

04.15
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).
Fig. 11 - 14a
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.
Due to technical reasons, the length of the thread-check spring path can vary a
little in either direction.
7 mm
1
4
6
7
9
Adjustment
8 1 0
5
2
11 - 17
3