Position Of Bobbin Case Opener - Pfaff 3827-2 Instruction Manual

14

Position of bobbin case opener

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Requirement
With the bobbin case opener 3 at its left point of reversal:
1. the front edge of the bobbin case opener finger must be approx. 0.6 mm behind the
front edge of the bobbin case cam 7.
2. The bobbin case carrier 6 must be approx. 0.3 mm from the positioning finger 8 and
screw 1 must be touching stop pin 5.
7
3
8
Fig. 14 - 23
Loosen screw 1 and then loosen screw 2 so that the bobbin case opener 3 is still just
held in position.
Adjust the bobbin case opener 3 in accordance with requirement 1.
Turn the bobbin case opener 3 in accordance with requirement 2 and tighten screw 2.
Set fixing collar 4 against the bobbin case opener 3 and stop pin 5 and tighten screw 1.
0.6 mm
0.3 mm
6
3
2
3
2
Adjustment
5
1
4
14 - 25