Contents
Contents ................................................................................. Chapter - Page
12 Adjustment ................................................................................................................ 12 - 2
12.01 Notes on adjustment................................................................................................... 12 - 2
12.02 Tools, gauges and other accessories .......................................................................... 12 - 2
12.03 Abbreviations .............................................................................................................. 12 -2
12.04 Explanation of the symbols ......................................................................................... 12 - 2
12.05 Adjusting the basic machine ....................................................................................... 12 - 3
12.05.01 Basic position of the hook drive unit ........................................................................... 12 - 3
12.05.02 Positioning the feed dog ............................................................................................. 12 - 4
12.05.03 Height of the feed dog ................................................................................................ 12 - 5
12.05.04 Adjusting the stitch length .......................................................................................... 12 - 6
12.05.05 Preliminary adjustment of the needle height............................................................... 12 - 7
12.05.06 Positioning the needle in centre of the needle hole .................................................... 12 - 8
12.05.07 Hook-to-needle clearance, needle rise, needle height and needle guard..................... 12 - 9
12.05.08 Hook to needle plate clearance ................................................................................... 12 -11
12.05.09 Bobbin case opener .................................................................................................... 12 -12
12.05.10 Hook lubrication .......................................................................................................... 12 -13
12.05.11 Presser foot to needle place clearance / presser foot pressure .................................. 12 -14
12.05.12 Thread check spring .................................................................................................... 12 -15
12.05.13 Needle thread tension release .................................................................................... 12 -16
12.05.14 Bobbin winder drive wheel and bobbin winder............................................................ 12 -17
12.05.15 Limiting the knee lever stroke..................................................................................... 12 -18
12.06 Adjusting the thread trimmer -900/93 ......................................................................... 12 -19
12.06.01 Basic position of the thread trimmer........................................................................... 12 -19
12.06.02 Thread catcher to hook clearance ............................................................................... 12 -20
12.06.03 Thread catcher position............................................................................................... 12 -21
12.06.04 Manual cutting test ..................................................................................................... 12 -22
12.06.05 Needle thread tension release .................................................................................... 12 -23
12.07 Adjusting the thread wiper -909/93 ............................................................................. 12 -24
12.08 Parameter settings (only on machines with Quick-motor)........................................... 12 -25
12.08.01 Selecting the user level............................................................................................... 12 -25
12.08.02 Example of a parameter input ..................................................................................... 12 -26
12.08.03 List of parameters....................................................................................................... 12-27
12.09 Internet update of the machine software.................................................................... 12 -28
12.10 Reset / Cold start ........................................................................................................ 12 -29
13 Circuit diagrams ........................................................................................................ 13 - 1
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