Bobbin Winder - Pfaff 939 U Instruction Manual

Adjustment
12

Bobbin winder

.05.42
● Position drive wheel 1 in accordance with requirement 1 and tighten screw 2.
● Place a bobbin onto the bobbin winder, thread the bobbin and engage the bobbin winder
● Move regulating pin 4 in accordance with requirement 2 and tighten screw 5.
12 - 44
Requirement
1. With the bobbin winder engaged the bobbin winder spindle must be turned reliably,
but friction wheel 3 must not touch drive wheel 1 when the bobbin winder is switched off.
2. The bobbin winder must disengage automatically when the thread is approx. 1 mm
from the edge of the bobbin.
Fig. 12 - 43
1
3
2
5
4