Preliminary Adjustment Of The Control Cam - Pfaff 939 U Instruction Manual

Adjustment
12

Preliminary adjustment of the control cam

.06.02
Requirement
1. In the needle rise position (hole 1) the roller lever 4 should lock into the corresponding
groove of the control cam.
2. The control cam 1 should be touching adjustment ring 3.
1
2
3
4
81-049
Fig. 12 - 48
● Turn control cam 1 (screws 2) in accordance with requirement 1 and shift it in
accordance with requirement 2.
12 - 49