Differential Feed Synchronisation (Only On The Pfaff 3704-2 - Pfaff 939 U Adjustment Manual

Justierung
1 Differential feed synchronisation
.05.16
● 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
● Bring clamp crank 4 to its top position and tighten screw 3.
22
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.
Fig. 1 - 17
the requirement.
(only on the PFAFF 3704-2/..)
1
2
5
3
4