Safety rules for machines .................................................................................................... 4
1. Specification..................................................................................................................... 8
1) Sewing machine .......................................................................................................................................................... 8
2. Installation ........................................................................................................................ 8
1) Confirming oil supply................................................................................................................................................. 9
2) Lubricating each friction part ..................................................................................................................................... 9
3. Machine Adjustment ...................................................................................................... 11
1) Inserting needle ......................................................................................................................................................... 11
2) Inserting lower thread to bobbin............................................................................................................................... 11
3) Adjustment of inserting lower thread....................................................................................................................... 11
4) Inserting lower thread ............................................................................................................................................... 12
5) Routing upper thread................................................................................................................................................. 13
6) Adjusting upper thread tension................................................................................................................................. 13
7) Adjusting presser foot pressure ................................................................................................................................ 14
8) Adjusting forward and reverse stitch length ............................................................................................................ 14
9) Adjusting sub presser foot and upper feed presser foot........................................................................................... 15
10) Adjusting timing of sub presser foot, upper feed presser foot and needle............................................................ 16
11) Adjusting feed dog height....................................................................................................................................... 16
12) Timing of needle plate, needle and feed dog ......................................................................................................... 17
13) Adjusting timing of needle and hook ..................................................................................................................... 18
14) Adjusting clearance between hook and opener ..................................................................................................... 19
15) Assembling feed cam.............................................................................................................................................. 19
16) Adjusting safety assembly...................................................................................................................................... 19
4. Causes of Trouble and Troubleshooting....................................................................... 20
1) Sewing machine troubleshooting ............................................................................................................................. 20
5. Table drawing ................................................................................................................. 22
1) KM-380BL ............................................................................................................................................................... 22
2) KM-380BLB ............................................................................................................................................................ 23
3) KM-390BL ............................................................................................................................................................... 24
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