JUKI L-1 Series User manual

L-1 Series
INSTRUCTION MANUAL
(Mechanical)

CONTENTS
IMPORTANT SAFETY INSTRUCTIONS .............................................................................. i
FOR SAFE OPERATION ..................................................................................................... ii
BEFORE OPERATION ........................................................................................................ ii
1. SPECIFICATIONS............................................................................................................ 1
2. INSTALLATION................................................................................................................ 1
3. ADJUSTING THE HEIGHT OF THE KNEE LIFTER ....................................................... 2
4. INSTALLING THE THREAD STAND............................................................................... 2
5. LUBRICATION ................................................................................................................. 3
6. ADJUSTING THE AMOUNT OF OIL (OIL SPLASHES) IN THE HOOK......................... 4
7. ACHING THE NEEDLE.................................................................................................... 5
8. SETTING THE BOBBIN INTO THE BOBBIN CASE....................................................... 6
9. ADJUSTING THE STITCH LENGTH............................................................................... 6
10. PRESSER FOOT PRESSURE....................................................................................... 6
11. HAND LIFTER................................................................................................................ 6
12. ADJUSTING THE HEIGHT OF THE PRESSER BAR................................................... 7
13. THREADING THE MACHINE HEAD............................................................................. 7
14. THREAD TENSION........................................................................................................ 8
15. THREAD TAKE-UP SPRING ......................................................................................... 8
16. ADJUSTING THE THREAD TAKE-UP STROKE.......................................................... 9
17. NEEDLE-TO-HOOK RELATIONSHIP ........................................................................... 9
18. HEIGHT OF THE FEED DOG...................................................................................... 10
19. TILT OF THE FEED DOG ............................................................................................ 10
20. ADJUSTING THE FEED TIMING ................................................................................ 11
21. PEDAL PRESSURE AND PEDAL STROKE............................................................... 12
22. ADJUSTMENT OF THE PEDAL.................................................................................. 13
23. PEDAL OPERATION ................................................................................................... 13

i
IMPORTANT SAFETY INSTRUCTIONS

ii
FOR SAFE OPERATION
BEFORE OPERATION

– 1 –
1. SPECIFICATIONS
2. INSTALLATION

– 2 –
3. ADJUSTING THE HEIGHT OF THE KNEE LIFTER
4. INSTALLING THE THREAD STAND

– 3 –
5. LUBRICATION

– 4 –
6. ADJUSTING THE AMOUNT OF OIL (OIL SPLASHES) IN THE HOOK

– 5 –
7. ACHING THE NEEDLE

– 6 –
10. PRESSER FOOT PRESSURE
11. HAND LIFTER
8. SETTING THE BOBBIN INTO THE BOBBIN CASE
9. ADJUSTING THE STITCH LENGTH

– 7 –
12. ADJUSTING THE HEIGHT OF THE PRESSER BAR
13. THREADING THE MACHINE HEAD

– 8 –
14. THREAD TENSION
15. THREAD TAKE-UP SPRING

– 9 –
16. ADJUSTING THE THREAD TAKE-UP STROKE
17. NEEDLE-TO-HOOK RELATIONSHIP

– 10 –
18. HEIGHT OF THE FEED DOG
19. TILT OF THE FEED DOG

– 11 –
20. ADJUSTING THE FEED TIMING

– 12 –
21. PEDAL PRESSURE AND PEDAL STROKE

– 13 –
22. ADJUSTMENT OF THE PEDAL
23. PEDAL OPERATION

– 14 –