JUKI LG-158, Инструкция по эксплуатации

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CONTENTS
SPECIFICATIONS ........................................................................................................................ 1
1. INSTALLING THE MACHINE ................................................................................................ 1
2. INSTALLING THE THREAD STAND ..................................................................................... 2
3. LUBRICATION ....................................................................................................................... 3
4. HOW TO INSTALL THE NEEDLE ......................................................................................... 3
5. ON THREADS ........................................................................................................................ 4
6. HOW TO PASS THE BOBBIN THREAD ............................................................................... 4
7. HOW TO THREAD THE MACHINE HEAD ............................................................................ 4
8. THREAD TENSION ................................................................................................................ 5
9. HOW TO WIND A BOBBIN THREAD .................................................................................... 6
10. ON THE SAFETY DEVICE .................................................................................................... 6
11. ADJUSTING THE WALKING FOOT AND PRESSER FOOT ................................................ 7
12. INSTALLING AND DISMANTLING THE SEWING HOOK .................................................... 8
13. ADJUSTING THE BOBBIN CASE OPENING LEVER .......................................................... 8
14. HEIGHT OF THE PRESSER FOOT ....................................................................................... 9
15. INSTALLING POSITION OF THE PRESSER FOOT ............................................................. 9
16. ADJUSTING THE STITCH LENGTH ................................................................................... 10
17. ADJUSTING THE HEIGHT OF THE FEED DOG ................................................................ 10
18. ON REVERSE SEWING ...................................................................................................... 10
19. ADJUSTING THE PRESSER FOOT AND THE WALKING FOOT ...................................... 11
20. ADJUSTING THE LIFTING AMOUNT OF THE PRESSER FOOT AND THE WALKING
FOOT ................................................................................................................................... 11
21. EXCHANGING THE TIMING BELT ..................................................................................... 12
22. TIMING OF MAIN SHAFT AND HOOK SHAFT .................................................................. 12
23. HOW TO REMOVE THE BOBBIN CASE HOLDER ............................................................ 12
24. ADJUSTING THE FORE & AFT POSITION OF NEEDLE BAR ROCKER FRAME ........... 13
25. MOTOR PULLEY AND SEWING SPEED ............................................................................ 13
26. PROBLEMS WITH SEWING AND CORRECTIVE MEASURES ......................................... 14
– 9 –
14. HEIGHT OF THE PRESSER FOOT
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following
work after turning the power off and ascertaining that the motor is at rest.
15. INSTALLING POSITION OF THE PRESSER FOOT
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following
work after turning the power off and ascertaining that the motor is at rest.
Raise up the knee lifter.
The presser foot will go up 16 mm (5/8”) from the surface of the throat plate and
stops.
When this height is less than 16 mm (5/8”):
1. With the knee lifter in raised up condition, loosen the set screw
❶
of the knee
lifter mounting bracket, insert a wooden block of 16 mm (5/8”) between the
presser foot and the throat plate and in that condition, tighten the set screw
❶
of the knee lifter mounting bracket.
2. Remove the wooden block.
* Maximum rising amount of the presser foot by means of the knee lifter is 16
mm (5/8").
When the presser foot hits the walking foot or the needle, adjust as follows:
1. Loosen the pressure regulating thumb screw
.
2. If the presser foot is lowered and screw
❶
and
❷
are loosened, the presser
bar will rotate freely.
3. Adjust the position of the presser foot and by determining the position of the
needle and the needle hole of the walking foot and tighten the screw
❶
.
4. After these adjustments if the presser foot does not go up or down smoothly,
loosen the set screw of the presser bar guide sleeve , rotate the presser
bar guide sleeve to right and left and by bringing the presser foot to the posi-
tion where it will go up and down smoothly, tighten the set screw.
❶
❷
❶