Thread Check Spring And Slack Thread Regulator - Pfaff 1053 Instruction Manual

Adjustment
11

Thread check spring and slack thread regulator

.05.12
11 - 14
Requirement
1. The motion of the thread check spring must be completed when the needle point
enters the material (spring stroke approx. 7 mm).
2. When the thread loop is at its largest when going around the hook, the thread check
spring must have moved by approx. 1 mm.
Fig. 11 - 13
Turn thread tension 1 (screw 2) according to requirement 1.
Refer back to chapter 11.05.11 Thread tension release and check. If necessary, carry
out adjustment.
Move slack thread regulator 3 (screws 4) according to requirement 2.
Due to technical sewing reasons it may be necessary to deviate from the
spring stroke indicated above.
Move the slack thread regulator 3 (screw 4) toward the "+" (= more thread) or
toward the "-" (= less thread)
4
+
3
2
-
1