SunStar KM-957 Series, User Manual

Safety rules for machines

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1. Specification

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1) Sewing machine  ......................................................................................................................................................... 8
2) Servo motor  .................................................................................................................................................................8
3) 470 motor  ................................................................................................................................................................... 8
4) 470 motor controller ................................................................................................................................................... 8
5) Clutch motor ............................................................................................................................................................... 9
6) Peripheral automation devices (optional) .................................................................................................................. 9

2. Installation

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1) Installation of machine head .................................................................................................................................... 10
2) Installation of oil tray (oil fan) ................................................................................................................................. 10
3) Installation of automatic knee lifting solenoid and power switch box ................................................................... 11
4) Lubrication  ............................................................................................................................................................... 11
5) Adjustment of belt tension ....................................................................................................................................... 12
6) Installation of program unit (for automatic trimming type)  ................................................................................... 12
7) Installation of belt cover  .......................................................................................................................................... 12
8) Installation and adjustment of synchronizer (for automatic trimming type)  ......................................................... 13
9) Description of back tack button (for automatic trimming type) ............................................................................. 14
10) Check for machine stop position (for automatic trimming type) ......................................................................... 14

3. Machine Adjustment

1) Inserting needle  ........................................................................................................................................................ 15
2) Removing bobbin and bobbin case  ......................................................................................................................... 15
3) Inserting lower thread  .............................................................................................................................................. 16
4) Inserting bobbin  ....................................................................................................................................................... 16
5) Routing upper thread ................................................................................................................................................ 16
6) Adjusting thread tension  .......................................................................................................................................... 17
7) Adjusting roller presser foot height and pressure  ................................................................................................... 19
8) Rotating roller shaft  ................................................................................................................................................. 19
9) Adjusting automatic knee lifter (optional)  .............................................................................................................. 19
10) Adjusting stitch length  ........................................................................................................................................... 19
11) Adjusting feed cam  ................................................................................................................................................ 20
12) Adjusting feed dog height ...................................................................................................................................... 20
13) Adjusting timing of needle and hook  .................................................................................................................... 21
14) Adjusting clearance between upper side of hook stopper and of needle plate groove ........................................ 22
15) Adjusting clearance between hook and opener  .................................................................................................... 22
16) Adjusting for thread trimmer ................................................................................................................................. 23
17) Exchanging movable knife and fixed knife  .......................................................................................................... 26
18) Adjusting gear box ................................................................................................................................................. 26
19) Adjusting ascending amount of roller shaft clutch  ............................................................................................... 27
20) Exchanging needle width gauge set  ...................................................................................................................... 27
21) Adjustments for KM-957SR  ................................................................................................................................. 28

4. Causes of Trouble and Troubleshooting

1) Sewing machine troubleshooting  .............................................................................................................................29

5. Table drawing

1) KM-967  .....................................................................................................................................................................31
2) KM-967-7 ..................................................................................................................................................................32

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