Pfaff 3811-11/43, Instruction Manual

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28 Hook thread regulator
Requirement:
The distance between the front edge of the thread regulator 1 (fig. 1) and the
rear needle plate edge-guide should be 29 mm.
.1 Loosen the thread regulator 1 (fig. 1) (screws 2).
.2 Move the thread regulator 1 in accordance with the requirement.
.3 Taking care that the thread regulator 1 is laterally in the middle of the thread puller bracket 3,
tighten both screws 2.
.4 Carry out a check.
29 Hook thread controller
Requirement:
The front edge of the thread controller 4 (fig. 3) should be approx. 8 mm
behind the front edge of the thread regulator 1.
.1 Move the thread regulator 4 (fig. 1) in accordance with the requirement (screw 5).
.2 Carry out a control.
30 Hook thread puller
Requirement: With the needle bar at its t.d.c. (=adjustment hole “1”, fig. 3), both eyelets of
the hook thread puller 3 should be just in front of the front edge of the thread
regulator 4 (fig. 5).
.1 Loosen screw 6 (fig. 1) a little until the hook thread puller 3 can be moved by hand on its stud.
.2 Bring the needle bar to its t.d.c. (handwheel).
.3 Insert the cylindrical pin into hole “1” in the bearing disc (fig. 2) (lock the position).
.4 Adjust the hook thread puller 3 in accordance with the requirement.
.5 Taking care that the bracket of the hook thread puller 3 has the same clearance laterally from the
thread controller 1, tighten screw 6.
.6 Remove the cylindrical pin.