
Adjustment
14 - 24
14
.22
Height of the bobbin case opener
Requirement
At the left point of reversal of the bobbin case opener
3
the top edge of the bobbin case
opener finger must be
0.5 mm
above the bottom edge of the bobbin case cam
4
.
●
Turn the bobbin case base
1
(screw
2
) in accordance with the
requirement
.
1
2
3
4
0.5 mm
Fig. 14 - 22