Pfaff 3734-12 Instruction Manual page 56

Adjustment
12 Roller presser height level switch
.04.11
12 - 13
Requirement
1. There should be a space of approx. 1 mm between switch 1 and retaining collar 5.
2. When the roller presser is raised approx. 3mm with the hand lever, the diode 6 of
switch 1 should light up.
1
4
3
Fig. 12 - 11
Switch on the machine.
Adjust switch 1 (screws 2) in accordance with requirement 1.
Adjust bracket 3 (screws 4) in accordance with requirement 2.
The height adjustment of switch 1 defines from which material thickness the
increased thread tension becomes effective. This adjustment may therefore
differ depending on the material.
5
6
2