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13. ADJUSTMENT OF AUTO TENSION (B341
⋅
B349
⋅
B351
⋅
B352)
(ADJUSTMENT OF ROLLER FOR THREAD TENSION CONTROL)
STANDARD
Thread polyester thread #60 between roller and thread holder.
Turn the pully counterclockwise. The thread should be locked when the top of the needle eye comes down 0
~ 1.5 mm down from the surface of needle plate.
(Remove presser foot and lower presser foot bar.)
ADJUSTMENT
1. Set pattern dial to straight stitch and lower the presser foot after threading polyester thread #60 properly.
2. Turn the pulley counterclockwise and adjust needle position at the top of needle eye 0 ~ 1.5 mm down
from the surface of needle plate.
3. Loosen the screw for roller adjusting shaft.
4. Turn the roller adjusting shaft by screw driver and adjust the roller position in between lock and release
condition with drawing thread.
(Adjust the roller so it is within one cycle of the roller adjusting shaft.)
5. Tighten the screw.
NOTE
Turn the pulley counterclockwise 2 ~ 3 times. Check if the roller should lock thread when top of needle eye 0
~ 1.5 mm down from the surface of needle plate. Also check if thread tension is proper on 2 pcs of broad with
needle #14(No. 90), polyester thread #60.
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 ...