Thread Check Spring - Pfaff 335 Instruction Manual

Adjustment
11.

Thread check spring

04.09
11 - 11
Requirement
The movement of the thread check spring must be finished when the needle point enters
the material (= approx. 7 mm spring movement).
The length of the spring movement can vary a little upwards or downwards due to
changes in the sewing parameters.
7 mm
Fig. 11 - 10
Thread the machine, place the test material under the presser foot and lower the presser
foot onto the material using the hand lever.
Loosen screw 1.
Sew a few stitches by turning the handwheel and then raise the take-up lever to its tdc.
When continuing to turn the handwheel (in direction of rotation) the thread check
spring 2 should move back about 7 mm.
In this position bring stop 3 to rest on the thread check spring and tighten screw 1.
2
3
1