Adjusting t
he Take-up Spring (Fig. 33)
25
1.Adjusting the tension of take-up spring
1)Unscrew screw
②
, and take out thread cl
-amp
⑤
(assembly).
2)Unscrew screw
④
in thread clamp
⑤
.
3)Rotating the screw
in the thread clamp
③
⑤
to adjust, The tension of the thread take-up
spring will become larger when turning toward
the clockwise(A), otherwise smaller when tow
-arding anti-clockwise (B).
4)Screw down screw
④
when adjustment is
over, fit thread clamp
⑤
(assembly) into the m
-achine,and screw down screw
②
.
Judgment basis for adjustment adequacy o
-f take-up spring:Confirm that the tension of t
-ake-up spring is properly adjusted, draw out
the needle thread in direction B. If place B of n
-eedle thread is drawn before take-up spring
reaches its lowest position, reduce the tensio
-n of take-up spring.
Caution:
1.To prevent the unexpected startup
of sewing machine, trim off the pow
-er supply before the operation is
conducted.
2.The take-up spring is already adju
-sted properly before the machine
leaves the factory as a rule, and it
requires readjustment only for sewing
of special materials or usage of special
stitch threads.
Fig.33
B
A
※
The tension of take-up spring
is
too high, so needle thread is
drawn out of place B in proces
s of
the action.
※
The take-up spring
kee
ps on functioning till
the end.
B
A
④
⑤
①
③
①
②
③
A
B
-21-
2 .Adjustment of the Stroke to the Thread
take-up Spring
ZOJE Europe 2022
