Pfaff 937 - Bobbin case opener motion

Adjustment
11.05.29 Bobbin case opener motion
Requirement
With the needle bar 2.0 past bdc (hole 1) the bobbin case opener 3 must be at its right
point of reversal.
11 - 31
4
2
5
1
3
3
1
2
● Loosen screws 2.
● Turn bobbin case eccentric 1 in accordance with the requirement.
● Tighten screws 2.
Fig. 11 - 31