Pfaff 3704-2/03 - Torsion Spring of the Reverse Feed Lever on the PFAFF 939 U

12 - 25
Adjustment
● Turn torsion spring 1 (screw 2 ) in accordance with the requirement using nut 3.
4
3
2
1
Fig. 12 - 24
12.05.23 Torsion spring of the reverse feed lever on the PFAFF 939 U
Requirement
With the presser foot raised, the longest stitch length set and the adjustment wheels 4 at
"0", the reverse feed lever 5 must return automatically to its uppermost point after being
activated.
5