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16 PFAFF
11 Vertical position of bobbin case opener
Requirement
1. Small hook (481 and 483)
At the left point of reversal of bobbin case opener 3 the bobbin case opener finger must
be roughly on one level with the lug of bobbin case base 4.
2. Large hook (481G and 483G)
At the left point of reversal of bobbin case opener
3
the top edge of the bobbin case
opener finger must be
0.5 mm
above the bottom edge of bobbin case cam 5.
1
2
4
3
5
3
● Turn bobbin case base 1 (screw
2) accoring to requirements 1 and 2.
0,5 mm