Bobbin Winder - Duerkopp Adler 669 Service Instructions Manual

2.13 Bobbin winder

5 4
10
9
8
34
3 2 1
Caution: Risk of injury!
Turn off the main switch.
Check and set the bobbin winder only with the sewing machine
switched off.
Standard checking
The bobbin winding operation must stop automatically when the bobbin
is filled up to approx. 0.5 mm below the bobbin edge.
The winder wheel must not have end play but its moving should not be
to sluggish either.
Basic setting
11
–
Disassemble the bobbin winder.
In order to do so unscrew the two fastening screws 1 and 5 and pull
the winder off.
–
Screw in the screw 4 until the two arms of the winder flap 3 come
parallel to each other.
–
Insert a completely filled bobbin on the winder.
–
Twist the winder flap 3 so that it bears against the thread on the
bobbin.
7
–
Loosen the screw 7.
–
Set the switching cam 11 so that the corner 10 of the switching cam
and the corner 8 of the leaf spring 9 superpose (the spring is
loaded) and the winder flap 3 has no end play.
–
Fasten the screw 7.
6