Needle Rise, Hook-To-Needle Clearance And Bobbin Case Positioning-Finger - Pfaff 937 Instruction Manual

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Needle rise, hook-to-needle clearance and bobbin case positioning-finger

.05.26
Requirement
1. With the needle position set at "middle", the zigzag stitch setting at "0" and the needle
bar position 2.0 past bdc (hole 1) the hook point must be in the middle of the needle and
the distance between the needle and the hook point must be 0.05 - 0.1 mm.
2. The bobbin case positioning-finger must be fitted so that there is a clearance of 0.5 mm
between the bottom section of the bobbin case and the front edge of the bobbin case
positioning-finger (see arrow).
Fig. 11 - 28
Loosen screw 1.
Adjust the hook in accordance with requirement 1.
Fit the bobbin case positioning-finger in accordance with requirement 2.
Tighten screw 1.
0.5 mm
0.05 - 0.1 mm
Adjustment
5
1
4
1
2
3
11 - 28