Table Of Contents - SunStar KM-957 Series User Manual

Post bed with driven roller foot, drop-feed back tack sewing machine

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 ................................................................................................................................................... 8

5) Clutch motor ............................................................................................................................................................... 9

6) Peripheral automation devices (optional) .................................................................................................................. 9

2. Installation .............................................................................................................................................................. 10

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