Baby Lock BL7800, Service Manual

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1. SETTING THE TEST MODE...............................................................................21
2. TENSION OF MOTOR BELT AND TIMING BELT.............................................22
3. NEEDLE DOWN POSITION ADJUSTMENT......................................................23
4. TIMING OF NEEDLE AND ROTARY HOOK
(CLEARANCE BETWEEN THE NEEDLE AND THE ROTARY HOOK POINT)....24
5. NEEDLE BAR HEIGHT.......................................................................................25
6. LOWER SHAFT ..................................................................................................26
7. FRONT/BACK, LEFT/RIGHT POSITION OF FEED DOG..................................26
8. HEIGHT OF FEED DOG .....................................................................................27
9. PRESSER BAR HEIGHT....................................................................................28
10. POSITION OF BUTTONHOLE SWITCH LEVER ...............................................29
11. BOBBIN WINDER...............................................................................................30
12. DIAL TENSION ...................................................................................................31
13. UPPER THREAD TENSION ...............................................................................31
14. INNER ROTARY HOOK BRACKET POSITION.................................................32
15. INNER ROTARY HOOK TENSION ....................................................................32
16. FEED ADJUSTMENT (VERTICAL FEED) .........................................................33
17. NEEDLE THREADER.........................................................................................34
18. NEEDLE THREADER
(CHECKING THE HOOK POSITION IN HORIZONTAL DIRECTION)...............34
19. NEEDLE THREADER (EXCHANGE) .................................................................35
20. NEEDLE THREADER (CHECKING THE HOOK IN STANDARD POSITION)...35
21. NEEDLE THREADER
(CHECKING THE HOOK POSITION IN VERTICAL DIRECTION) ....................36