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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
DecreaseIncrease
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 o and ascertaining that the motor is at rest.
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