JUKI LS-1341 - Page 58

CONTENTS
1. SPECIFICATIONS ......................................................................................1
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) Hand lifter .................................................................................................................................... 10
2) Knee lifter .................................................................................................................................... 10
(9) Feed cam timing ................................................................................................... 12
1) Horizontal feed cam timing.......................................................................................................... 12
2) Top feed cam timing.................................................................................................................... 14
(10) Feed motion .......................................................................................................... 16
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
3. STANDARD ADJUSTMENT OF THREAD TRIMMER COMPONENTS
(LS-1342-7) ...............................................................................................24
(1) Thread trimmer device .......................................................................................... 24
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
(2) Alternate vertical dial ............................................................................................ 28
1) Installing position of the detection switch of the amount of alternate vertical movement ............ 28
(3) Adapting SC-380 to LS-1342/1342-7.................................................................... 30
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
(2) Automatic presser foot lifter .................................................................................. 36
1) Installing the automatic presser foot lifter.................................................................................... 36
2) Installing the pneumatic device components .............................................................................. 37
(3) DL device (LS-1342) ............................................................................................. 39
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
(4) Knee lifter shaft (pedal type) ................................................................................. 40
1) Installing procedure of the knee lifter shaft (pedal type) after set-up of the machine ................. 41