Brother BAS-761 Service Manual download pdf (Page 7)

5. ADJUSTMENT.................................................................................................................................5-01

5-1. Adjusting the zigzag movement ...............................................................................................................5-02

5-2.

Adjusting the needle bar height and, the needle and the rotary hook timing

.......................................................5-05

5-3. Adjusting the thread trimmer timing..........................................................................................................5-07

5-4. Tension release ........................................................................................................................................5-09

5-5. Thread tension..........................................................................................................................................5-09

5-6. Adjusting the machine sensor ..................................................................................................................5-12

5-7. Adjusting the work clamp height...............................................................................................................5-13

5-8. Adjusting the rotary hook lubrication amount ..........................................................................................5-13

5-9. Adjusting the air pressure........................................................................................................................5-14

5-10. Adjusting the pressure switch .................................................................................................................5-14

5-11. Adjusting speed of the pneumatic mechanism .......................................................................................5-15

5-11-1. Folding clamp...................................................................................................................................5-16

5-11-2. Inner clamp.......................................................................................................................................5-16

5-11-3. Center blade.....................................................................................................................................5-16

5-11-4. Sewing clamp...................................................................................................................................5-17

5-11-5. Folding base (10 mm-stroke) ...........................................................................................................5-17

5-11-6. Folding base (1.5 mm-stroke) ..........................................................................................................5-17

5-11-7. Label attachment device (Option) ....................................................................................................5-18

5-11-8. Suction (Vacuum) cylinder................................................................................................................5-18

5-11-9. Stacker wiper....................................................................................................................................5-19

5-11-10. Stacker bar inside...........................................................................................................................5-19

5-11-11. Stacker bar outside.........................................................................................................................5-19

5-11-12. Stacker roller ..................................................................................................................................5-20

5-12. Adjusting the folding clamp.....................................................................................................................5-20

5-13. Adjusting the inner clamp........................................................................................................................5-21

5-14. Adjusting the center blade support .........................................................................................................5-21

5-15. Replacing and adjusting the bearings for center blade supporter ..........................................................5-22

5-16. Adjusting the folding base height............................................................................................................5-23

5-17. Adjusting the stacker wiper.....................................................................................................................5-23

5-18. Adjusting the stacker table and the outside stacker bar.........................................................................5-24

5-19. Checking the movement of the stacker ..................................................................................................5-24

5-20. Adjusting the label attachment device (option).......................................................................................5-24

5-21. Adjusting the work clamp pressure.........................................................................................................5-25

5-22. Adjusting the belt tension........................................................................................................................5-26

5-23. Replacing the nylon gears ......................................................................................................................5-27

5-24. Adjusting the AC servo motor backlash..................................................................................................5-28

5-25. Checking and adjusting the home position.............................................................................................5-28

5-26. Adjusting the bobbin winder....................................................................................................................5-30

5-27. Adjusting the cylinder sensors ................................................................................................................5-30

5-28. Adjusting the rise-and-fall equipment .....................................................................................................5-32

5-29. Upper thread breakage sensor. ..............................................................................................................5-32

5-30. Adjusting the upper thread breakage detector........................................................................................5-33

5-30-1. How to insert the fiber ......................................................................................................................5-33

5-30-2. Setting of MODE ..............................................................................................................................5-33

5-30-3. Setting of sensitivity .........................................................................................................................5-34

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Brother BAS-761 Service Manual Page 7

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