JUKI MO-6800S Series Instruction Manual
Industrial sewing machine
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Also See for MO-6800S Series:
- Instruction manual (47 pages) ,
- Engineer's manual (72 pages)
Related Manuals for JUKI MO-6800S Series
Summary of Contents for JUKI MO-6800S Series
- Page 1 TRIAL MODE − a valid license will remove this message. See the keywords property of this PDF for more information.
- Page 2 TO ENSURE SAFE USE OF YOUR SEWING MACHINE For the sewing machine, automatic machine and ancillary devices (hereinafter collectively referred to as "machine"), it is inevitable to conduct sewing work near moving parts of the machine. This means that there is always a possibility of unintentionally coming in contact with the moving parts.
- Page 3 SAFETY PRECAUTIONS DANGER CAUTION TRIAL MODE − a valid license will remove this message. See the keywords property of this PDF for more information.
- Page 4 TRIAL MODE − a valid license will remove this message. See the keywords property of this PDF for more information.
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- Page 6 Precautions to be taken so as to use the MO-6800S Series more safely 1. So as to avoid electric shock hazards, do not open the cover of the electrical box of the motor or touch any part inside the electrical box with the power to the machine turned ON.
- Page 7 CAUTION In addition, be aware that the safety devices such as the eye protection cover and nger guard are sometimes omitted in the sketches, illustrations and gures included in the Instruction Manual for the explanation's sake. In the practical use, never remove those safety devices. CAUTION BEFORE OPERATION WARNING : To avoid malfunction and damage of the machine, con rm the following.
- Page 8 4. Also to conform to the RoHS Directive 2011/65/EU 5. Relevant information on which should be transmitted in response to a reasoned request by the national authorities,by the electronic method or other according to the request. Model MO-6800S Series Description Industrial Sewing Machine Function...
- Page 9 viii TRIAL MODE − a valid license will remove this message. See the keywords property of this PDF for more information.
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Page 10: Table Of Contents
CONTENTS 1. SPECIFICATION ......................1 2. NAMES OF MAJOR PARTS ..................2 3. INSTALLATION ......................3 4. LUBRICATION AND DRAINAGE .................. 6 5. THREADING ........................8 6. ADJUSTING THE THREAD TENSION ................ 11 7. REPLACE THE NEEDLE ..................... 12 8. ADJUSTING THE STITCH LENGTH ................13 9. -
Page 11: Specification
Needle DC × 27 (Standard) Presser foot lift 5 to 7 mm Lubricating oil JUKI MACHINE OIL #18 Weight 27 kg - Equivalent continuous emission sound pressure level (L ) at the workstation: A-weighted value of 83.0 dB; (Includes K = 2.5 dB);... -
Page 12: Names Of Major Parts
2. NAMES OF MAJOR PARTS ❶ Presser foot lifting lever ❷ Presser foot (asm.) ❸ Thread stand ❹ Oil gauge ❺ Pulley ❻ Cloth plate cover ❸ ❶ ❺ ❹ ❷ ❻ – 2 – TRIAL MODE − a valid license will remove this message. See the keywords property of this PDF for more information. -
Page 13: Installation
3. INSTALLATION WARNING : • Machine installation should only be carried out by a quali ed technician. • Contact your dealer or a quali ed electrician for any electrical work that may need to be done. • The sewing machine weighs 27 kg. The installation should be carried out by two or more people. •... - Page 14 2) Assemble the waste disposal set and the thread stand. ❻ ❺ 3) Assemble the motor starting pedal ❺ to the left side, and the presser foot pedal ❻ to the right side. – 4 – TRIAL MODE − a valid license will remove this message. See the keywords property of this PDF for more information.
- Page 15 4) The correct direction of rotation of the sewing machine is clockwise. Never allow the machine to rotate in the reverse direction. If the machine rotates counterclockwise, the oil pump will fail to ❼ function resulting in seizure. The best tension of the motor belt ❼ is that the belt to the table shown below for the size of pulley ❽...
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Page 16: Lubrication And Drainage
1) Remove oil sight window ❶ at a super-high speed (JUKI MACHINE OIL #18) supplied with the unit or equivalent through the oil inlet. When the oil surface reaches the space between two marker lines on the oil gauge, tighten oil sight window ❶. - Page 17 3) To extend the usage term, this machine has ❷ ❷ once every month and change it with a new one where necessary. ❷ Needle cooling lubrication oil : SILICON OIL SILICON OIL SILICON OIL – 7 – TRIAL MODE − a valid license will remove this message. See the keywords property of this PDF for more information.
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Page 18: Threading
5. THREADING WARNING : Follow the procedures for threading. Wrong threading can cause stitching troubles such as thread breakage, stitch skipping and puckering. MO-6804S MO-6814S – 8 – TRIAL MODE − a valid license will remove this message. See the keywords property of this PDF for more information. - Page 19 MO-6814S-△△△-44H MO-6816S – 9 – TRIAL MODE − a valid license will remove this message. See the keywords property of this PDF for more information.
- Page 20 MO-6816S-△△△-50H MO-6816S-△△△-60H – 10 – TRIAL MODE − a valid license will remove this message. See the keywords property of this PDF for more information.
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Page 21: Adjusting The Thread Tension
6. ADJUSTING THE THREAD TENSION The thread tension should be adjusted properly according to the kinds and the thickness of the materials, stitch length, and seam width, etc. In addition, adjust the nuts case by case individually. Turn the nuts clockwisely will increase the thread tension. -
Page 22: Replace The Needle
(3) Adjusting the looper thread cam thread guide 1) In the case the looper thread is not appropriately adjusted, thread loops cannot be formed with consistency. ⊖ (Thread can be excessively loosened ⊕ or thread loops cannot be formed.) 2) ⊕means to have more thread amount ⊖... -
Page 23: Adjusting The Stitch Length
8. ADJUSTING THE STITCH LENGTH 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. Change the stitch length appropriately according to the material to be used, differential feed ratio or other relevant factors. -
Page 24: Replace The Knives
10. REPLACE THE KNIVES 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. ❸ ❹... -
Page 25: Adjusting The Overedge Width
11. ADJUSTING THE OVEREDGE WIDTH 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. 1) Turn the pulley to move the upper knife ❹... -
Page 26: Adjusting The Presser Foot
13. ADJUSTING THE PRESSER FOOT (1) Adjusting the presser foot position Increase ❶ Decrease ❷ ❹ ❼ ❺ ❸ ❻ 1) Loosen adjusting screw ❶ and screw ❼ of the presser foot. 2) Move the presser foot ❻ so that the groove of the presser foot can align with the groove of the throat plate. ❼. - Page 27 (2) Adjusting the lift amount of the presser foot ❷ 1 mm ❶ ❸ ❻ ❺ ❹ 1) Turn the pulley to lower the feed dog until the bottom of the presser horizontally comes in contact with the throat plate. 2) Provide a 1 mm clearance between presser foot lifting arm ❶...
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Page 28: Adjusting The Feed Dog
14. ADJUSTING THE FEED DOG 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. (1) Adjusting the feed dog height ❷... -
Page 29: The Relationship Between The Needle And The Looper
15. THE RELATIONSHIP BETWEEN THE NEEDLE AND THE LOOPER 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. (1) The relationship between the needle and the upper looper When the upper looper moves to the leftmost point, the distance... - Page 30 (3) The relationship between the upper looper and the lower looper When the upper and the lower loopers cross, keep them as close as possible. Somehow, the loopers shall not either touch nor collide to each other. The clearance of 0.05 to 0.2 mm should be provided between the upper and lower loopers when they are crossing.
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Page 31: Adjusting The Amount Of Travel Of The Double Chainstitch Looper
16. ADJUSTING THE AMOUNT OF TRAVEL OF THE DOUBLE CHAINSTITCH LOOPER 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. The double chainstitch looper makes elliptic move- ment. -
Page 32: Maintenance
17. MAINTENANCE WARNING : 1. Turn off the power switch before carrying out cleaning. The machine may operate if the treadle is pressed incautiously, which could result in injury. 2. Be sure to wear protective goggles and gloves when handling the lubricating oil and grease so that they do not get into your eyes or onto your skin, otherwise in ammation can be resulted. -
Page 33: Dimensions Use To Adjusting The Looper And The Needle Guard
18. DIMENSIONS USE TO ADJUSTING THE LOOPER AND THE NEEDLE GUARD WARNING : 1. To avoid possible accidents due to unfamiliarity with the machine, get a maintenance man who has a good knowledge of the machine or serviceman of our distributor to adjust the machine or replace any of its parts.