Pfaff 3339 Instruction Manual page 40

Adjustment
11. Dismantling work (continued)
08
11 - 8
Fig. 11 - 07
Remove roller lever 15 (screws 16).
Screw out screw 17.
Rotate the eccentric bearing bush 18 a little to the left (anti clockwise) and pull it out.
Remove the control cam disk 19.
16
15
17
19
18