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20. BUTTONHOLE ADJUSTMENT (FORWARD AND REVERSE FEEDING)
1 STEP BH MODEL (B338
⋅
B341
⋅
B347
⋅
B348
⋅
B349
⋅
B351
⋅
B352)
STANDARD
When pattern dial is set to "1" (Buttonhole), there should be no feeding difference between left and right legs.
ADJUST
1. Set pattern dial to "1" (Buttonhole).
2. Set stitch length dial to "F" and lower the B.H Lever. After that, get the trial buttonhole stitch.
3. Set BH adjusting eccentric stud to fig. 3.
4. Sew the trial buttonhole stitch then check the difference of sewing pitch between right and left rows.
5. Loosen the nut for buttonhole feed adjusting screw.
6. Adjust forward and reverse feeding by turning the screw.
7.
Tighten the nut.
4 STEP BH MODEL (B346)
STANDARD
When pattern is set to "b" and "d", there should be no feeding difference between left and right legs.
ADJUSTMENT
1. Set pattern dial to "d".
2. Set stitch length dial to "F".
3. Set BH adjusting eccentric stud to fig. 3.
4. Set pattern dial to "b" and sew left row of buttonhole then check the difference of sewing pitch between
right and left rows
5. Loosen the nut for adjusting screw.
6. Adjust forward and reverse feeding by turning the screw.
7. Tighten the nut.
Содержание BL6200
Страница 1: ...4 1998 ...
Страница 24: ... 22 1 ADJUSTMENT OF EACH CONTROL UNIT 4 STEP BH MODEL B346 ...
Страница 25: ... 23 1 ADJUSTMENT OF EACH CONTROL UNIT 1 STEP BH MODEL B338 B341 B347 B348 B349 B351 B352 ...
Страница 63: ... 61 3 LEAD WIRES ARRANGEMENT B338 B346 B347 B348 B341 B349 B351 B352 ...
Страница 64: ... 62 LCD UNIT 1 LINE LCD TYPE ...
Страница 65: ... 63 DISPLAY SYSTEM LCD control PCB LCD module 4 LINE LCD TYPE ...
Страница 66: ... 64 MOTOR CONTROL UNIT 230V 120V MODE SWITCH UNIT 1 LINE LCD TYPE 4 LINE LCD TYPE ...
Страница 68: ... 66 BL6200 B338 BL6700 B341 H7110109 ...