Operation Manual

2.5 Threading of the Underthread (Hook Thread)
Caution Risk of Injury !
Pull the mains plug.
Thread the underthread only with the machine turned off.
The threading of the underthreads 1 (Page 28) is conducted as shown in the
illustrations on pages 26 and 28
in alphabetical order of the letters
:
–
Bring the machine in its end position (see Chapter 2.3).
In the end position the hook bracket with the underthread tension must point to the
front (to the seamstress).
–
Remove the clamp plates (see Chapter 2.1).
–
Tilt up the machine head.
The gas pressure spring aids the tilting and holds the machine head in its position.
–
Place the thread spool on the thread stand and guide the thread through hole
a
.
–
Guide the thread through the thread guide
b
in the thread guide tube
c
on the back
of the housing.
–
Guide the thread through the thread guide tube
d
.
–
Guide the thread with the aid of the threading wire from the accessories pack into
the spreader drive spindle
e
.
For this insert the threading wire into the spreader drive spindle from above.
–
Lead the thread over the guide pin
f
and past behind the tension plate
g
.
–
Lead the thread between the two tension discs of the underthread tension
h
up
over the guide pin
i
.
–
Guide the thread through the eye of the torsion spring
k
.
–
With sub-classes
-211241
,
-221301
and
-241291
additionally guide the thread
through the hole of the bring-forward lever
l
.
–
Lead the thread up through the thread guide tube
m
.
–
Lead the thread through the spreader stop
n
.
–
Guide the thread from below through hole
o
in the hook and needle hole
p
of the
needle plate. Hereby let an approx. 25 mm long underthread end hang out of the
needle hole.
2
= Gimp thread (Page 28)
27