7
4) Adjustment of thread tension ............................................................................................. 24
5) Adjustment of presser foot tension .................................................................................... 25
6) Adjustment of presser foot position .................................................................................. 25
7) Adjustment of stitch length ............................................................................................... 25
8) Adjustment of differential feed .......................................................................................... 27
9) Lubricating device of needle thread and needle cooling device ....................................... 28
8. Fine-tuning of the sewing machine ................................................................... 29
1) Adjustment of needle thread tension ................................................................................. 29
2) Adjustment of looper thread tension ................................................................................. 30
3) Adjustment of needle and spreader ................................................................................... 30
4) Adjustment of needle and looper timing ........................................................................... 32
9. Automatic Thread Trimmer................................................................................... 35
1) Operation ............................................................................................................................. 35
2) Wiring .................................................................................................................................. 37
3) Air pressure wiring map .................................................................................................... 42
4) Installation of synchronizer sensor..................................................................................... 45
5) Adjustment of automatic thread trimmer ........................................................................... 46
6) Adjustment of thread tension release mechanism ............................................................. 53
7) Adjustment of air wiper .....................................................................................................56
8) Presser foot lifter mechanism ............................................................................................ 57
9) ST-C device ......................................................................................................................... 58
10. SC 7310 (Left Fabric Trimmer) .......................................................................... 61
1) Installation of accessories .................................................................................................. 61
2) Adjustment of the suction pipe (A) ................................................................................... 62
3) Adjustment of the suction pipe cover plate ....................................................................... 62
4) Cutting length (Location of fabric cutting) ....................................................................... 62
5) Removal and installation of the fixed mes (left) ............................................................... 63
6) Installation of the moving mes(left) .................................................................................. 64
7) Adjustment of the moving mes(left) stroke ...................................................................... 65
8) Mes (Knife) adjustmeent ................................................................................................... 66
9) Adjustment of fabric guide ................................................................................................ 66
10) Separation of the left mes driving ................................................................................... 67