Adjustment Of The Bobbin Opener - Pfaff 487 Adjustment Manual

1

Adjustment of the bobbin opener

.06.21
Requirement
1. The distance between the fi nger of the bobbin opener 3 and the edge of the bobbin
case base 5 must be 0.8 mm.
2. When the bobbin opener 3 is at its left point of reversal, the bobbin case base 5 should
be defl ected by approx. 0.3 mm by the retaining fi nger and screw 1 should be resting
on stop pin 7.
Fig. 1 - 23
● Loosen screw 1 and loosen screw 2 so that the bobbin opener 3 is still held slightly.
● Adjust bobbin opener 3 according to requirement 1.
● Tighten screw 2.
● Adjust retaining collar 4 according to requirement 2.
● Tighten screw 1.
5
0,8 mm
3
0,3 mm
6
3
Adjustment
3
2
7
1
4
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