Pfaff 937

Adjustment
11.05.23 Hook bearing bracket
Requirement
The hook shaft must be touching the hook bearing bracket adjustment gauge 1 at the top
and the side.
11 - 25
418 - 419
438 - 439
Fig. 11 - 25
1
3
1
2
4
● Loosen screw 3.
● Swing the bobbin case opener to the right and remove the hook.
● Loosen screw 2 and loosen the draw key underneath it by lightly tapping the head of
the screw.
● Screw on the hook bearing bracket adjustment gauge.
● On the PFAFF 937 the numbers “438 - 439“ must be visible from the front.
● Move or turn hook bearing bracket 4 in accordance with the requirement.
● Tighten screw 2.
● Adjust the bobbin case opener in accordance with subsection 11.05.28 Bobbin case
opener position.