Hook-To-Needle Clearance - Pfaff 3371-1 series Adjustment Manual

Adjustment
14

Hook-to-needle clearance

.10
14 - 9
Requirement
When the bottom marking of the ascending needle bar is level with the lower edge of the
needle bar bush
1. hook 5 should be 0.05 – 0.1 mm behind the needle and
2. the distance between the needle and the tip of the hook race should be 7.5 mm.
0,05 - 0,10 mm
1
Fig. 14 - 06
Loosen screws 1, 2 and 3.
Turn the eccentric pin 4 in accordance with the requirements.
Tighten screws 2 and 3.
Screw 1 remains loosened for further adjustments.
3
0,05 - 0,10 mm
5
4 2
7,5 mm