– 16 –
(1) When you want to change the stroke of the thread take-up spring
Loosen screw
❷
. Adjust thread take-up spring
❶
by moving it in the slot.
❷
❶
❶
❹
❸
❶
Turn presser spring regulating dial
❶
clockwise
A
to
increase the pressure of the presser foot, or counter-
clockwise
B
to decrease it.
Be sure to operate the sewing machine with
the pressure of the presser foot minimized
as long as the presser foot securely holds
the material.
The adjustable range extends from 38 mm to 60 mm
which represents the distance from the upper surface
C
of the arm to presser spring regulating dial
❶
.
The standard value at the time of shipment is 47 mm.
4-3. Thread take-up spring
4-4. Adjusting the pressure of the presser foot
(2) When you want to change the tension of the thread take-up spring
To adjust the tension of thread take-up spring
❶
, loosen nut
❸
first. Turn spring shaft
❹
counterclockwise to
increase the tension or clockwise to decrease it.
After the adjustment, fix the stud by tightening nut
❸
.
Decrease
Increase
B
A
❶
C
