Adjustment
13 - 13
● 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.
Fig. 13 - 09
1
0.3 - 0.5 mm
13.04.10 Bobbin case opener stroke
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.
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