– 4 –
(1) changing the stroke of thread take-up
spring
1
) Loosen setscrew
2
.
2) As you turn tenson post
3
clockwse (n drec-
ton
A
), the stroke of the thread take-up sprng
wll be ncreased.
3) As you turn the knob counterclockwse (n drec-
ton
B
), the stroke wll be decreased.
(2) changing the pressure of thread take-up
spring
1
) Loosen setscrew
2
, and remove tenson post
3
.
2) Loosen setscrew
4
.
3) As you turn tenson post
3
clockwse (n drec-
ton
A
), the pressure wll be ncreased.
4) As you turn the tenson post counterclockwse (n
drecton
B
), the pressure wll be decreased.
1
2
3
4
5
1
B
A
) When sewng heavy-weght materals, move
thread gude
1
to the left (n drecton
A
) to
ncrease the length of thread pulled out by the
thread take-up.
2) When sewng lght-weght materals, move
thread gude
1
to the rght (n drecton
B
) to
decrease the length of thread pulled out by the
thread take-up.
3) Normally, thread gude
1
s postoned n a way
that marker lne
C
s algned wth the center of
the screw.
1
C
B
A
(1) adjusting the needle thread tension
) The length of thread remanng at the needle
tp after thread trmmng s shortened by turn-
ng tenson regulatng nut No.
1
clockwse n
drecton
A
.
2) It s lengthened by turnng the nut counterclock-
wse n drecton
B
.
3) The needle thread tenson s ncreased by turn-
ng tenson regulatng nut No. 2
2
clockwse n
drecton
C
.
4) It s decreased by turnng the nut counterclock-
wse n drecton
D
.
(2) adjusting the bobbin thread tension
) The bobbn thread tenson s ncreased by turn-
ng tenson regulatng screw
3
clockwse n
drecton
E
.
2) It s decreased by turnng the screw counter-
clockwse n drecton
F
.
A
B
C
D
E
F
1
2
3
17. thread tension
18. thread take-up spring
19. adjusting the thread take-up stroke
WarNING :
Be sure to turn the power oFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
