Height And Stroke Of The Bobbin Case Opener - Pfaff 3834-14/11 Instruction Manual

Adjustment
13

Height and stroke of the bobbin case opener

.04.05
● 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.
13 - 7
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.
1
Fig. 13 - 05
furthest point.
Depending on the thread size, a variation of the setting in Requirement 2 is
permitted.
2
3
1
0,3 - 0,5 mm