Bobbin Case Opener Stroke - Pfaff 1491E1 Instruction Manual

Adjustment
13.

Bobbin case opener stroke

04.10
13 - 13
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. 13 - 09
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.
0.3 - 0.5 mm
1