Height And Stroke Of The Bobbin Case Opener - Pfaff 1571 Instruction Manual

Adjustment
12

Height and stroke of the bobbin case opener

.04.11
● 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
● Adjust bobbin case opener 1 (screw 2) in accordance with requirement 2.
12 - 15
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.
2
Fig. 12 - 11
furthest point.
On the PFAFF 1574 these adjustments must be repeated on the right post.
Depending on the thread size, a variation of the setting in Requirement 2 is
permitted.
3
1
1
0,3 - 0,5 mm