Juki DU-1281-7 Bruksanvisning
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DU-1281-7
INSTRUCTION MANUAL

CONTENTS
1. SPECIFICATIONS 1 ..........................................................................................................
2. PREPARATION BEFORE OPERATION ......................................................................... 2
2-1. Installing the knee lifter....................................................................................................................................... 2
2-2. Installing the waste oil receiver.......................................................................................................................... 2
2-3. Lubrication 3 ...........................................................................................................................................................
2-4. Oiling state 3 ...........................................................................................................................................................
2-5. Adjusting the amount of oil in the hook.................................................................................................................. 3
2-6. Adjusting the oil in the pump 4 .............................................................................................................................
2-7. Installing the synchronizer 4 .................................................................................................................................
2-8. Installing the belt cover and the bobbin winder 4 ...............................................................................................
3. HOW TO ADJUST AND HOW TO USE THE SEWING MACHINE 5 ................................
3-1. Attaching the needle 5 ...........................................................................................................................................
3-2. Threading the machine head 5 ..............................................................................................................................
3-3. Adjusting the stitch length and reverse-feed stitching 6 ....................................................................................
3-4. Indication of the direction of rotation of the bobbin case 6 ...............................................................................
3-5. Thread tension 6 .....................................................................................................................................................
3-6. Presser foot pressure.......................................................................................................................................... 7
3-7. How to install the intermediate presser............................................................................................................. 7
3-8. Hand lifter 7 .............................................................................................................................................................
3-9. Height of the feed dog 8 .........................................................................................................................................
3-10. Adjusting the inclination of the feed dog 8 ..........................................................................................................
3-11. Adjusting the stitch length for forward stitching and reverse stitching 8 ........................................................
3-12. Adjusting the waling foot and presser foot 9 .......................................................................................................
3-13. Needle-to-hook relationship 10 .............................................................................................................................
3-14. Feed timing 10 ........................................................................................................................................................
3-15. Relation between the counter knife and the tip of the thread trimmer blade (left) ..................................... 11
3-16. Adjusting the mesh of the knife ....................................................................................................................... 11
3-17. Adjusting the thread trimming cam 12 .................................................................................................................
3-18. Adjusting the amount of mesh of the thread trimmer blades 12 .......................................................................
3-19. Adjusting the counter knife pressure 13 ..............................................................................................................
3-20. Auxiliary thread tension 13 ....................................................................................................................................
3-21. One-touch type manual reverse stitching 13 .......................................................................................................
4. TROUBLES IN SEWING AND CORRECTIVE MEASURES 14 ........................................

– 1 –
SC-921C*-AA
●Applicable JUKI control box and motor
Destination
1. SPECIFICATIONS
Application Pouches, bags, shoes
Needle system
DP x 17 #16 - #23 (Standard #22)
DB x 1 #20 - #23
Sewing speed Max. 2,000 sti/min
Stitch length Max. 8 mm Thread #8 - #30
Lift of presser foot Hand lifter : 6 mm
Knee lifter : 16 mm
Stitch adjusting method Dial
Lubrication method Automatic lubrication
Thread take-up lever Link-type thread take-up lever Motor to be used Servomotor
Needle bar stroke 38mm Oil be used Spindle oil
Needle to be used DP x 17 (DB x 1 can be used.)
Noise
- Equivalent continuous emission sound pressure level (L
pA) at the workstation:
A-weighted value of 79.0 dB; (Includes K
pA = 2.5 dB); according to ISO 10821- C.6.2 -ISO
11204 GR2 at 2,000 sti/min.
Classification
of control box
Control box SC-921 (Machine head setting (memory switch No. 95) "du12") ................................
Motor M-51N .........................................
Position sensor SY-2 ..........................
(Synchronizer)
Motor pulley Outside diameter: 75 mm (Marker: 80) Part No.: MTSP00750A0 ...............................
V belt Size M M ......................................... -40 Part No.: MTJV0040000
Produktspecifikationer
Varumärke: | Juki |
Kategori: | Symaskin |
Modell: | DU-1281-7 |
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