Singer 20U-105C - Needle Thread Tension Adjustment; Thread Take-up Spring Adjustment

16
3.13
Needle
Thread
Tension
Adjustment
Figure 19
Adjusting the tension of needle
thread using tension adjusting nut
‘1’ according to different sewing
condition. (Figure 20)
Turn the nut ‘1’ clockwise (in direc-
tion of the marker ‘+’), the tension
will increase.
Turn the nut ‘1’ counterclockwise (in
direction of the market ‘-‘), the
tension will decrease.
3.14
Thread
Take-up
Spring
Adjustment
Figure
20
The adjusting of the pressure of the
thread take-up spring ‘4’ (Figure
21).
Turn the thread tension post ‘1’
clockwise (in direction of the marker
‘+’), the pressure will be increased.
Turn the thread tension post ‘1’
counterclockwise (in direction of
the marker ‘-’), the pressure will be
decreased.
The adjusting of the stroke of the
thread take-up spring ‘4’. (Figure 21)
Loosen setting screw ‘2’.
Turn the thread tension ‘3’ clock-
wise (in direction of the marker ‘+’),
the stroke of the thread take-up
spring will be increased.
Turn the thread tension ‘3’ counter-
clockwise (in direction of the marker
‘-’), the stroke of the thread take-up
spring will be decreased.
1
1
2
3
4
Zigzag
Sewing Machine
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