Pfaff 441-O - Bobbin Winders

19
Correct
setting:
19.0.1
Bobbin winders
When the bobbin winders are engaged, the winder spindlesshould be driven reliably;
when the bobbin winders are disengaged, however, friction wheels 3 must not contact
drive wheels 2.
Furthermore, each bobbin winder should stop automatically when the thread wound
on
the bobbin has reached a point abt. 1.0 mm below Its rim.
19.0.2
19.1 Engage both bobbin winders.
19.2 Loosen screws 1 of both drive wheelswhich are accessible from the back of the machine
arm.
19.3 Adjust the position of drive wheels 2onthearmshaftsothat both winder spindles will be
driven reliably whenthe bobbin winders areengaged,butthat friction wheels3 will notbe
in contact with drive wheels 2 when the bobbin winders are disengaged.
19.4 Inthis position, tighten screws 1.
19.5 Loosen screw 4 of the right stop latch.
19.6 If the bobbinis too full, push regulating stud 5toward the right; ifitis not full enough,
push it toward the left.
19.7 Afterthe adjustment, tightenscrew 4 again.
19.8 Repeat the same adjustment forthe leftbobbinwinder.
19.9 Check this adjustment (see "Correct setting").
27
From the library of: Superior Sewing Machine & Supply LLC