Needle And Thread; Inserting The Needle - Singer 20U109 Instruction Manual And Parts List

3.7
Needle and
Thread
Caution
The power
supply should
be cut off
before attach-
ing the needle.
3.8
Inserting
the Needle
Caution
Switch off the
machine.
Do not operate
the machine
without the
finger guard '2'
(see Figure 10)
Selection of the proper needle
depends not only on the machine
model, but also on the material and
thread used. For selection of proper
Table 4 - Needle and Thread
Model
Application
Max. thread size (Nm)-
Synthetic*
Needle size (1/100mm)
Needle catalog
(Needle system)
* or an equivalent size of other types of thread
Use needle Cat. No. 1910-05 needle
system (135x9) only.
Raise needle bar to its highest
position by turning handwheel
toward you.
Loosen needle set screw '1' (see
needle and thread sizes to be used
on the various machine models
please refer to the table below.
20U-109 / 109C / 112 / 112C / 309, 20E-910
Light weight Medium weight
materials materials
120 60
10 (60) 12 ~ 16 (80 ~ 100)
1910-05 (135x9)
Figure 10). Insert the needle in the
needle bar and push it up as far as it
will go.
Make sure its long groove faces
toward the front. Tighten needle set
screw '1' securely.
Figure 10
Zigzag Sewing Machine
Mid-heavy weight
materials
30
18 ~ 19 (110 ~ 120)
1
2
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