Table of Contents
Safety rules for machines ..................................................................................................................................... 4
1. Specification ............................................................................................................................................................ 8
1) Sewing machine ......................................................................................................................................................... 8
2) Servo motor ................................................................................................................................................................ 8
3) 470 motor ................................................................................................................................................................... 8
4) 470 motor controller ................................................................................................................................................... 9
5) Clutch motor ............................................................................................................................................................... 9
2. Installation .............................................................................................................................................................. 10
1) Installation of machine head .................................................................................................................................... 10
3) Lubrication ............................................................................................................................................................... 11
4) Adjustment of belt tension ....................................................................................................................................... 11
6) Installation of belt cover .......................................................................................................................................... 12
9) Reverse button function ........................................................................................................................................... 14
10) Adjustment of synchronizer .................................................................................................................................. 14
3. Machine Adjustment ......................................................................................................................................... 15
1) Inserting needle ....................................................................................................................................................... 15
2) Adjusting needle bar ................................................................................................................................................ 15
5) Adjusting lubrication of hook .................................................................................................................................. 16
8) Routing upper thread ................................................................................................................................................ 18
9) Adjusting upper thread ............................................................................................................................................. 18
11) Adjusting stitch length ........................................................................................................................................... 19
15) Adjusting feed cam ................................................................................................................................................ 22
16) Adjusting for thread trimmer ................................................................................................................................. 22
17) Adjusting blade pressure ........................................................................................................................................ 26
18) Exchanging movable knife .................................................................................................................................... 26
19) Exchanging fixed blade ......................................................................................................................................... 26
20) Adjusting thread release ......................................................................................................................................... 27
5. Table drawing ........................................................................................................................................................ 29
1) KM-640BL ............................................................................................................................................................... 29
2) KM-640BL-7 ........................................................................................................................................................... 30