13
High Speed Straight Lockstitch Sewing Machine
|
Instruction Manual and Parts List
3.12
Thread
Take-Up Spring
Adjustment
The adjustment of the stroke of the
thread take-up spring (Figure 18)
Loosen setting screw
‘2’
.
Turn the thread tension post
‘3’
clockwise (in direction
‘A’
), the
stroke of the thread take-up spring
will be increased.
Turn the thread tension post
‘3’
counter-clockwise (in direction
‘B’
),
the stroke of the thread take-up
spring will be decreased.
Adjusting the pressure of the thread
take-up spring ‘1’ (Figure 19)
Loosen setting screw
‘2’
and take
out thread tension assembly
‘5’
.
Loosen setting screw
‘4’
and turn
the tension post
‘3’
.
Turn the tension post
‘3’
clockwise
(in direction
‘A’
), the pressure of the
spring will be increased.
Turn the tension post
‘3’
coun-
ter clockwise (in direction
‘B’
), the
pressure will be decreased.
• Usually, the thread take-up spring
‘1’
has been properly adjusted be-
fore leaving the factory.
• Only when sewing special clothes
or using special thread is readjust-
ment necessary.
Figure 18
Figure 19
Downloaded from
