![Brother HE-800B Скачать руководство пользователя страница 115](http://html.mh-extra.com/html/brother/he-800b/he-800b_service-manual_56506115.webp)
7. ADJUSTMENT
HE-800B
106
7-13-4. Adjusting the lower thread clamp opening amount
Loosen the two screws (6), and then adjust so that the
distance between the lower thread clamp (4) and the
lower thread presser (5) is approximately 5 mm when the
feed guide shaft (1) is projecting out at the front and is
firmly touching the roller (3) of opening plate (2).
7-14. Adjusting the bobbin presser
1. Turn on the power and set the sewing machine to the home position. Then press the THREAD key to lower the work clamp.
2. Loosen the set screw (1), and then adjust so that the bobbin presser (2) goes into the hole in the bobbin case (3).
3. Check that the work clamp is at the home position, and then loosen the nut (4) and turn the screw (5) to adjust the clearance
A between the bobbin presser (2) and the edge of the bed to approximately 12.5 mm.
4. Turn off the power, move the lower thread trimmer cam lever (6) by hand in the direction of the arrow to check that the
bobbin presser (2) presses the bobbin firmly before the lower thread retainer (7) starts to hold the lower thread.
Note:
If this timing is reversed, it will cause problems such as an excess trailing length of upper thread.
4351Q
4352Q
4350Q
3989Q
Approx.
5 mm
Содержание HE-800B
Страница 7: ...v HE 800B Oil tank accessory 4732M 4731M 4730M ...
Страница 75: ...6 ASSEMBLY HE 800B 66 D E 0688D 0690D ...
Страница 126: ...9 ELECTRIC MECHANISM HE 800B 117 Power PCB Cutter PCB LCD panel PCB 0831D 0768D 0769D ...
Страница 133: ...9 ELECTRIC MECHANISM HE 800B 124 0851D ...
Страница 134: ...9 ELECTRIC MECHANISM HE 800B 125 0852D ...
Страница 135: ...9 ELECTRIC MECHANISM HE 800B 126 0853D ...
Страница 177: ...MEMO 168 HE 800B ...
Страница 178: ...SERVICE MANUAL 2014 Brother Industries Ltd All Rights Reserved HE 800B I3061003D 2014 03 D 1 ...