Pfaff 939 U Adjustment Manual

Justierung
22
Fig. 1 - 17
1.05.16 Differential feed synchronisation (only on the PFAFF 3704-2/..)
● Set the stitch length at "1.5" and set both levers 1 at "0".
● While 2 (screw 3) constantly turning the balance wheel, adjust shaft 3 in accordance with
the requirement.
● Bring clamp crank 4 to its top position and tighten screw 3.
Requirement
When the stitch length is set at "1.5" and both levers 1 are in the "0" position, the two feed
dogs 5 should move the same distance when the balance wheel is turned.
3
2
1
4
5

Pfaff 939 U Specifications

General

Brand	Pfaff
Model	939 U
Category	Sewing Machine
Language	English