17
1) Operation and control of the pedal
A. Loosen fixing nut② and turn pressure-adjusting screw①
in a clockwise direction as shown in Figure 20. The
machine will start running at a backward step 1. The pedal
will become heavier when the automatic presser foot is
raised. Likewise, the pedal will become lighter when the
screw is shifted in a counterclockwise position. After
adjusting the weight of the pedal, firmly tighten the fixing
nut②.
B. Unfasten the fixing nut④ and turn the pressure-adjusting
screw③ clockwise, then the machine will begin to run at a
backward step 2. The pedal will become heavier when the
trimming device begins to operate, and lighter when the
screw is turned counterclockwise.
C. In adjusting the pedal pressure while sewing forward,
secure the tension spring⑤ onto the left side groove to
decrease pressure and onto the right side groove to increase
pressure.
D. Pedal operation
You can perform various functions with the sewing
machine by moving the pedal (foothold) forward and
backward as illustrated below.
Function
Low-speed
operation
High-speed
operation
Neutral position
Presser foot lift
Trimming operation
When pedal is pressed down at forward step 1
When pedal is pressed down to
the maximum in forward position
When pedal is not pressed down
(Original position)
When pedal is pressed down
at backward step 1
When pedal is pressed down
at backward step 2
Machine rotates at a low speed
Machine rotates at a high speed
Machine stops
Presser foot is lifted
Trimming device starts running
and cuts the thread
Pedal position Peal operation Sewing machine operation
[ Fig. 20 ]
※For more detailed information on operation and functions of the Servo motor, please refer to our manual
Fortuna Ac Servo Motor Series III provided by SunStar.
3
Operation and functions of the Servo motor
①
②
③
④
⑤
Loosen the
screw if the
pedal feels
heavy during
trimming work.
Unfasten the
screw if the
pedal feels
heavy during
running the
presser foot.
Strong
Standard
Weak
Connect the
spring to the
rear-end
groove of
three control
levers if the
pedal feels
heavy during
forward
sewing.
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