CONTENTS
1. SPECIFICATIONS .................................................................................................. 1
2. STANDARD ADJUSTMENT ................................................................................... 6
(1) Needle entry position ............................................................................................................. 6
(2) Longitudinal position of the feed dog ..................................................................................... 6
(3) Lateral position of the feed dog .............................................................................................. 8
(4) Height of the feed dog ............................................................................................................ 8
(5) Height of the hook .................................................................................................................10
(6) Adjusting the inner hook guide .............................................................................................10
(7) Needle-to-hook timing ...........................................................................................................12
(8) Lift of the presser foot ...........................................................................................................14
1) Hand lifter......................................................................................................................................................... 14
2) Knee lifter (Without thread trimmer only) ............................................................................................................. 14
3) Automatic presser foot lifter (Machine with thread trimmer only) ............................................................................ 16
(9) Timing between the upper shaft and the lower shaft .............................................................16
(10) Feed cam timing ..................................................................................................................18
1) Horizontal feed cam timing ................................................................................................................................18
2) Top feed cam timing ......................................................................................................................................... 20
(11) Feed motion ........................................................................................................................22
1) Amount of alternate vertical movement (position of the vertical adjusting arm) ........................................................ 22
2) Alternate momentum ........................................................................................................................................ 24
(12) Needle sway (Adjusting the bottom feed amount) ...............................................................24
(13) Stitch length of normal/reverse feed ....................................................................................26
(14) Balancer (Machine without thread trimmer only) .................................................................26
(15) Vertical position of the needle bar rocking frame .................................................................28
(16) Dimension of the needle stop adjusting slide shaft (asm.) ...................................................30
(17) Position of the change lever ................................................................................................30
(18) Position of the reverse feed control lever.............................................................................32
(19) Safety clutch .......................................................................................................................32
(20) Reverse feed cylinder ..........................................................................................................34
(21) Lubrication ..........................................................................................................................34
1) In case of manual lubrication ......................................................................................................................... 34
2) In case of automatic lubrication...................................................................................................................... 36
(22) Thread trimmer device ........................................................................................................38
1) Position of the counter knife and the clamp spring ............................................................................................... 38
2) Position of the counter knife base ....................................................................................................................... 40
3) Vertical position of the moving knife .................................................................................................................... 40
4) Adjusting the knife pressure ............................................................................................................................... 42
5) Thread trimmer cam ......................................................................................................................................... 42
6) Thread trimmer cam timing ................................................................................................................................44
7) Connecting the rocking arm and the thread trimmer roller arm .............................................................................. 44
8) Connecting the left and right rocking arms (2-needle machine only) ...................................................................... 46
9) Thread trimmer solenoid.................................................................................................................................... 46
(23) Alternate vertical dial ...........................................................................................................48
1) Installing position of the detection switch of the amount of alternate vertical movement ........................................... 48
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