Adjustment
1.04.10 Height and stroke of the bobbin case opener
Requirement
1.The top edges of the bobbin case opener 1 and bobbin case base 3 should be on one level.
2.When the bobbin case opener 1 has deflected the bobbin case to its furthest point, the catch of the bobbin case should be 0.3 – 0.5 mm from the back edge of the needle plate recess.
3
1 
1
2 | 0,3 - 0,5 mm |
Fig. 1 - 10
●Adjust bobbin case opener 1 (screw 2) in accordance with requirement 1.
●Turn the balance wheel until the bobbin case opener has deflected the bobbin case to its furthest point.
●Adjust bobbin case opener 1 (screw 2) in accordance with requirement 2.
On the PFAFF 574 these adjustments must be repeated on the right post. Depending on the thread size, a variation of the setting in Requirement 2 is permitted.
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