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MODEL 520
ADJUSTING BUTTONHOLE LEVER POSITION
TO ADJUST THE BUTTONHOLE LEVER GUIDE:
1. Set the machine in buttonhole sensor adjusting mode.
(See below. The led should display "H" or "l".)
2. Remove the face cover and loosen setscrew (A).
3. Lower the buttonhole lever. Loosen the setscrew and position the buttonhole lever guide so
the led displays "l" . Tighten setscrew (A).
TO ADJUST THE BUTTONHOLE SENSOR POSITION:
4. Install the buttonhole foot (R).
5. Lower the buttonhole lever to its lowest position, and insert a 1.6 mm clearance gauge.
6. Turn the adjusting screw to the left until the led display changes from "l" to "H".
7. Next, turn the adjusting screw to the right until the led display changes from "H" to "l".
8. Check the led. When the clearance of the buttonhole foot is 1.4 mm, the led displays "H";
when the clearance is 1.8 mm, the led displays "l".
9. Turn off the power switch, and install the face cover.
NOTES:
If there is any lint in the buttonhole sensor slit, clean out with a swab.
Buttonhole
lever guide
Setscrew (A)
BH lever
Adjusting screw
Buttonhole sensor
Clearance
1.6 mm
TO ENTER ADJUSTING MODE:
1. Turn the power on while
pressing the #01 button and
#16 button simultaneously.
(Hold both buttons down until
the led displays the adjusting
mode.)
2. Press the #16 button
to select "2".
3. Press the needle
#01 button.
Setscrew (B)
Setscrew (B)
