Pfaff 939 U - Torsion Spring of the Differentiation Regulating Shaft on the PFAFF 3704-2

12 - 28
Adjustment
● Turn torsion spring 1 (screw 2) in accordance with the requirement using nut 3.
Fig. 12 - 27
12.05.26 Torsion spring of the differentiation regulating shaft on the PFAFF 3704-2/..
Requirement
When the presser foot is raised, the maximum stitch length set, lever 4 raised to its top
position and lever 5 set at "0", the pointer 6 should be touching lever 4.
112-019
3
2
1
112-018
4
5
6