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12.
Bobbin case opener stroke
04.07
Requirement
When the bobbin case opener presses the bobbin case to the furthest extent, the projection
of the bobbin case must protrude 0.3 - 0.5 mm from the rear edge of the needle plate
recess.
Fig. 12 - 07
Turn the handwheel until the bobbin case opener presses against the bobbin case to the
furthest extent.
Move the bobbin case base ( screw 1, accessible from the rear of the post ) in
accordance with the requirement.
This setting can vary according to the thickness of the thread.
Adjustment
0.3 - 0.5 mm
1
12 - 9
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