CONTENTS
1. SPECIFICATIONS ............................................................................................. 1
2. STANDARD SEWING SHAPE LIST ................................................................. 2
3. STANDARD ADJUSTMENT ............................................................................. 3
(1) Height of the needle bar.................................................................................................. 3
(2) Needle-to-hook timing..................................................................................................... 3
(3) Adjusting the feed timing belt tension .......................................................................... 5
(4) Knife drop position.......................................................................................................... 5
(5) Adjusting the stroke and initial position of the cloth cutting knife ............................ 7
(6) Adjusting the rotary play of the cloth cutting knife...................................................... 9
(7) Replacing the knife.......................................................................................................... 9
(8) Adjusting the needle thread trimmer........................................................................... 11
1) Adjusting the thread grasping force of the needle thread trimmer .......................................................... 11
2) Adjusting the height of the needle thread trimmer .................................................................................. 11
3) Needle thread trimming adjustment mode.............................................................................................. 13
4) Adjusting the needle thread trimmer origin sensor ................................................................................. 15
5) Lateral adjustment of the needle thread trimmer (start of sewing) ......................................................... 15
6) Longitudinal and lateral adjustment of the needle thread trimmer (at the time of trimming)................... 17
7) Opening amount of the needle thread trimmer ....................................................................................... 17
8) Adjusting the needle thread draw-in amount .......................................................................................... 19
(9) Adjusting the bobbin thread trimmer .......................................................................... 19
1) Bobbin thread trimmer adjustment mode ............................................................................................... 19
2) Adjusting the bobbin thread trimming origin sensor ............................................................................... 21
3) Adjusting the position of the trimmer ...................................................................................................... 21
4) Replacing the bobbin thread trimmer ..................................................................................................... 23
5) Open timing and open amount ............................................................................................................... 23
(10) Adjusting the presser lifter ......................................................................................... 25
1) Adjusting the backlash of the presser lifter gear ..................................................................................... 25
2) Adjusting the presser bar position bracket ............................................................................................. 25
3) Adjusting the presser lifter origin sensor ................................................................................................ 27
1 Adjusting the senor ............................................................................................................................. 27
2 Refer to the adjusting procedure of the presser lifter motor origin compensation .............................. 27
(11) Adjusting the thread tension ...................................................................................... 29
1) Adjusting the stroke of the thread tension solenoid ................................................................................ 29
2) Adjusting the thread take-up spring tension (purl stitching).................................................................... 29
(12) Adjusting the bobbin winder ...................................................................................... 31
(13) Adjusting the thread breakage detecting plate......................................................... 31
(14) Adjusting the bobbin presser..................................................................................... 33
(15) Adjusting the pedal ..................................................................................................... 35
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