Pfaff 474

Adjustment
11 - 16
11.04.12 Bobbin-case opener stroke
Requirement
When the bobbin-case opener has pushed the bobbin case down as far as possible, the tip
of the bobbin case must be 0.3 - 0.5 mm from the rear edge of the needle plate recess.
● Turn the balance wheel until the bobbin-case opener has pushed the bobbin case down as
far as possible.
● Adjust the bobbin-case base (screw 1) according to the requirement.
Repeat the adjustment on the right-hand post for the 474.
This setting may differ according to the thread thickness.
Fig. 11 - 12
1
0.3 - 0.5 mm