29
Mechanical adjustment
Buttonhole lever adjustment
To prepare:
1. While pressing the needle up/down and lock stitch
buttons, turn the power switch on.
The LCD display “----”.
Press “5” key to enter the sesor test mode.
2. Attach the automatic buttonhole foot R.
Place a piece of paper between the presser foot and
the needle plate for easier adjustment.
Buttonhole lever sensor position adjustment:
1. Adjust the clearance between the stopper and the
presser foot slider to 1.6 mm.
Lower the buttonhole foot and the buttonhole lever.
2. Loosen the hexagonal socket screw until LCD displays
BH lever symbol. Tighten the hexagonal socket screw
slowly until the lever symbol disappears.
Buttonhole lever guide adjustment:
1. Adjust the clearance between the stopper and the
presser foot slider to 2.6 mm.
Lower the buttonhole foot.
2. Lower the buttonhole lever. Loosen the setscrew of the
Buttonhole lever guide.
Adjust the buttonhole lever guide left or right so the
Buttonhole lever slightly touches to the Buttonhole foot.
Tighten the setscrew.
To check:
1. While pressing the needle up/down and lock stitch
buttons, turn the power switch on.
The LCD display “----”.
Press “5” key to enter the sesor test mode.
2. Adjust the clearance between the stopper and the
presser foot slider to 1.4 mm.
Be sure that the LCD displays BH lever symbol.
Adjust the clearance between the stopper and the
presser foot slider to 1.8 mm.
Be sure that the BH lever symbol disappears.
If the BH lever symbol appears, adjust the buttonhole
sensor position again.
3. After checking the buttonhole sensor position, Slide the
buttonhole lever so the buttonhole lever does not touch
to the buttonhole foot (Buttonhole lever should be
released).
Be sure that BH lever symbol is not on the LCD.
Move the buttonhole lever to the right and left very
slightly, and be sure again that the BH lever
symbol is not shown on the LCD.
If the BH lever symbol appears, adjust the buttonhole
lever guide adjustment again.
Setscrew
Buttonhole
lever guide
Hexagonal
socket screw
Clearance
Stopper
Slider
Buttonhole lever
Clearance
1
2
BH lever symbol
Содержание HQ Stitch 710
Страница 1: ...Service Manual 05 29 18 HQ Stitch 710...
Страница 18: ...Oil Put a drop of oil on the following 1 The presser bar at the bottom bushing inside the left hinged cover 15...
Страница 24: ...Oil Put a drop of oil on the following 7 The hook felt under the needle plate and the bobbin case 21...
Страница 92: ...Appendix II Diagnostic Tests 89...