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6. Repairing the machine ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 28
1) Adjusting needle bar .................................................................................... 28
2) Adjusting needle and hook .............................................................................. 28
3) Adjusting feed plate height .............................................................................. 28
4) Adjusting the Presser Foot Devices ..................................................................... 29
5) Adjusting thread release and dish opening width ...................................................... 30
6) Adjusting parts related to trimming ..................................................................... 31
7) Adjusting the main thread control device............................................................... 33
8) Adjusting upper thread sensor device .................................................................. 34
9) Adjusting speed of arm lifter ........................................................................... 34
10) Adjusting hand pulley device ........................................................................ 34
11) Adjusting tension of operating belt .................................................................. 35
12) Setting X-Y original point.............................................................................. 38
13) Switch from up/down clamp method to cassette method .......................................... 39
14) Air system schematic diagram ........................................................................ 41
7. CAUSE OF BREAK-DOWN AND TROUBLESHOOTING ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 42
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