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4-2-1. Adjusting the stroke of thread take-up
spring
1) Loosen setscrew
.
2) Turn tension post
clockwise (in direction
),
the stroke of the thread take-up spring will be
increased, and turn the post
counterclockwise
(in direction
), the stroke will be decreased.
4-2-2. Adjusting the pressure of thread take-up
spring
1) Loosen setscrew
, and remove thread tension
(asm.)
.
2) Loosen tension post setscrew
.
3) Turn tension post
clockwise (in direction
),
the pressure will be increased, and turn the post
counterclockwise (in direction
), the pres-
sure will be decreased.
4-1-6. Adjusting the bobbin thread tension
1) The tension of the bobbin thread is adjusted by
turning the tension adjusting screw
.
Turn it clockwise to increase.
Turn it counterclockwise to decrease.
Increase
Decrease
4-2. Thread take-up spring
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