CONTENTS
2. STANDARD ADJUSTMENT ...................................................................... 2
(1) Needle entry position .............................................................................................. 2
(2) Longitudinal position of the feed dog ...................................................................... 2
(3) Lateral position of the feed dog .............................................................................. 4
(4) Height of the feed dog ............................................................................................ 4
(5) Needle-to-hook timing ............................................................................................. 6
(6) Height of the hook ................................................................................................... 8
(7) Adjusting the inner hook guide ............................................................................... 8
(8) Lift of the presser foot ........................................................................................... 10
1) Horizontal feed cam timing .......................................................................................................... 12
2) Top feed cam timing .................................................................................................................... 14
1) Amount of alternate vertical movement ....................................................................................... 16
2) Alternate momentum ................................................................................................................... 18
(11) Horizontal feed arm .............................................................................................. 18
(12) Stitch length of normal/reverse feed ..................................................................... 20
(13) Balancer (LS-1340 and LS-1341 only) ................................................................. 20
(14) Position of the reverse feed control lever ............................................................. 22
(15) Safety clutch ......................................................................................................... 22
1) Vertical position of the moving knife ............................................................................................ 24
2) Position of the fixed knife ............................................................................................................ 24
3) Position of the solenoid ............................................................................................................... 26
4) Thread trimmer cam .................................................................................................................... 26
5) Thread trimmer cam timing ......................................................................................................... 28
4. INSTALLATION OF THE OPTIONAL PARTS ......................................... 32
(1) Automatic reverse feed device (LS-1340, LS-1341, LS1342) .............................. 32
1) Removing the window plate (Removing parts list) ...................................................................... 32
2) Removing the reverse feed control lever (Removing parts list) .................................................. 32
3) Installing the reverse feed link hinge screw (List 1) .................................................................... 32
4) Installing the reverse feed control lever (List 2) .......................................................................... 33
5) Installing the automatic reverse feed device (List 3) ................................................................... 34
6) Installing the touch-back switch (List 4) ...................................................................................... 35
7) Installing the pneumatic components (In case of installing the touch-back switch only) (List 5) ...... 35
1) Installing the automatic presser foot lifter .................................................................................... 36
2) Installing the pneumatic device components .............................................................................. 37
1) Installing the DL device ............................................................................................................... 39
2) Installin procedure of the DL device after set-up of the machine ................................................ 39
3) Installing the 5-step switch .......................................................................................................... 40
Summary of Contents for LS-1340
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