Table Of Contents - JUKI LH-3500A Series Instruction Manual

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Instruction manual (57 pages)

Quick start manual (2 pages)

Table of Contents

1. SPECIFICATIONS ............................................................................................................ 1

2. NAME OF EACH COMPONENT ..................................................................................... 3

3. INSTALLATION ................................................................................................................ 4

3-1. Caution at the time of set-up ................................................................................................................................ 4

3-2. Installation of the sewing machine ...................................................................................................................... 5

3-3. Adjusting the height of the knee lifter ................................................................................................................. 6

3-4. Installation of thread stand ................................................................................................................................... 6

4. PREPARATION OF THE SEWING MACHINE ................................................................ 7

4-1. Method of lubrication ............................................................................................................................................ 7

4-2. Lubrication to the oil tank ..................................................................................................................................... 8

4-3. Draining of oil from the oil tank ............................................................................................................................ 9

4-4. Adjusting the amount of oil in the hook .............................................................................................................. 9

4-5. Oil in the feed box ................................................................................................................................................ 10

4-6. Applying grease ................................................................................................................................................... 11

4-7. Setting up the SC-920 .......................................................................................................................................... 14

4-8. Installing the belt cover (For LH-3528A, 3568A, 3578A and 3588A) ................................................................ 18

4-9. Attaching the needles .......................................................................................................................................... 18

4-10. How to take out the bobbin case ...................................................................................................................... 19

4-11. Inserting a bobbin in a bobbin case ................................................................................................................. 19

4-12. Threading the machine head ............................................................................................................................ 20

4-13. Thread tension ................................................................................................................................................... 23

4-14. Winding the bobbin thread ............................................................................................................................... 24

4-15. Thread take-up spring ....................................................................................................................................... 25

4-16. Adjusting the stitch length ................................................................................................................................ 27

4-17. Needle-to-hook relation ..................................................................................................................................... 27

4-18. Pedal pressure and pedal stroke...................................................................................................................... 29

4-19. Adjustment of the pedal .................................................................................................................................... 29

5. OPERATION OF THE SEWING MACHINE .................................................................. 30

5-1. Pedal Operation ................................................................................................................................................... 30

5-2. Hand lifter ............................................................................................................................................................. 30

5-3. Adjusting the pressure of the presser foot ....................................................................................................... 31

5-4. Micro-lifter ............................................................................................................................................................ 31

5-5. Thread tension release changeover when using the knee lifter ..................................................................... 32

5-6. One-touch manual reverse feed (One-touch reverse feed type) ..................................................................... 32

6. MAINTENANCE ............................................................................................................. 33

6-1. Procedure of changing over between bottom feed and needle feed and the adjustment

(for LH-3528A only) ............................................................................................................................................. 33

6-2. Changing the feed timing .................................................................................................................................... 35

6-3. Adjusting the thread trimming cam ................................................................................................................... 36

6-4. Adjusting the hook needle guard ....................................................................................................................... 37

6-5. Adjusting the inner hook guide .......................................................................................................................... 37

6-6. Adjusting the height and the inclination of the feed dog ................................................................................. 38

6-7. Replacing the gauge ............................................................................................................................................ 39

6-8. Adjusting the thread presser spring .................................................................................................................. 39

6-9. Adjusting the position of the moving knife ....................................................................................................... 40

6-10. Adjusting the counter knife position and the knife pressure ........................................................................ 41

6-11. Position of the wiper .......................................................................................................................................... 42

6-12. Caution when installing the attachments ........................................................................................................ 42

6-13. Replacing the bobbin thread slack preventer spring (For LH-3568A, 3568A-7, 3588A and 3588A-7) ........ 43

6-14. Stop of the needle bars and angle of corners for corners stitching

(For LH-3568A, 3568A-7, 3588A and 3588A-7) .................................................................................................. 43

7. STITCH-TO-ANGLE TABLE BY GAUGE (PITCH AND mm CONVERSION TABLE) .. 44

8. GAUGE SETS ................................................................................................................ 45

9. TROUBLES AND CORRECTIVE MEASURES ............................................................. 54

10. MOTOR PULLEY AND BELT ...................................................................................... 56

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