CONTENTS
1
SPECIFICATIONS ............................................................................1
2
NAME OF EACH COMPONENT .....................................................2
1. Appearance ............................................................................................................... 2
2. Inside of the cover .................................................................................................... 3
3
STANDARD ADJUSTMENT / DISASSEMBLY AND ASSEMBLY... 4
1. Removing order of covers ....................................................................................... 4
2. Installation of the throat plate ................................................................................. 8
3. Height of the needle bar ......................................................................................... 10
4. Position of the feed dog ......................................................................................... 12
5. Adjusting the stroke of the sub feed dog ............................................................. 14
6. Height of the feed dog ............................................................................................ 16
7. Feed dog timing ...................................................................................................... 18
8. Position of the balance weights and the cams .................................................... 20
9. Projecting amount of the upper looper ................................................................ 22
10. Radius of the lower looper .................................................................................... 24
11. Adjustment of the loop lift ..................................................................................... 26
12. Timing between upper and lower looper .............................................................. 28
13. Installation of the needle guards .......................................................................... 30
14. Adjusting the looper thread take-up ..................................................................... 32
15. Height and lateral position of the presser foot .................................................... 34
16. Adjusting the oating of the disk of the thread tension controller ................... 36
17. Adjusting the tension of the thread tension controller ....................................... 38
18. Position of the needle thread take-up thread guide ............................................ 40
19. Tension of the belt .................................................................................................. 42
20. Adjusting the needle bar connection guide of the needle threader .................. 44
21. Adjusting the needle threader hook ..................................................................... 46
22. Adjusting the looper threader timing ................................................................... 48
23. Adjusting the pump unit ........................................................................................ 50
24. Position of the lower knife ..................................................................................... 52
25. Engagement of the upper knife with the lower knife .......................................... 54
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