– 28 –
4-2. Adjusting the thread take-up spring and the thread take-up stroke
[When you want to change the stroke of the
thread take-up spring]
❷
Decrease
Increase
❹
B A
1) Loosen screw
❷
and adjust thread take-up
spring, left
❸
by moving the latter along the
slot.
2) Loosen screw
❹
and adjust thread take-
up spring, right
❶
by moving thread take-up
spring adjusting plate
❺
along thread take-up
spring base
❻
.
❼
❽
❾
❶
❸
❻
❺
[When you want to change the tension of
the thread take-up spring]
1) To change the strength of thread take-up
spring, left
❸
, loosen nut
❼
and turn spring
shaft
❽
counterclockwise to increase the
spring strength or clockwise to decrease it.
Secure the thread take-up spring, left by tight-
ening nut
❼
.
2) To change the strength of thread take-up
spring, right
❶
, loosen screw
❾
and turn nut
counterclockwise to increase the spring
strength or clockwise to decrease it.
Secure the thread take-up spring, right by
tightening screw
❾
.
[Adjusting the thread take-up stroke]
The length of thread pulled out by the thread take-
up is decreased by moving thread guide
to the
right (in direction
A
) or is increased by moving it
to the left (in direction
B
).
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
Summary of Contents for SC-956
Page 1: ...INSTRUCTION MANUAL LH 4500C Series SC 956...
Page 180: ...175 11 GAUGE PARTS LIST 43 22 TABLE OF EXCHANGING GAUGE PARTS LH 4578C TYPE F LH 4578C F type...
Page 181: ...176 23 TABLE OF EXCHANGING GAUGE PARTS LH 4578C 7 LH 4578C 7...
Page 182: ...177 47 24 TABLE OF EXCHANGING GAUGE PARTS LH 4588C 7 LH 4588C 7...