JUKI MEB-3810 Instruction Manual
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JUKI MEB-3810 Instruction Manual

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ENGLISH
MEB-3810
INStructIoN MaNuaL


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Summary of Contents for JUKI MEB-3810

  • Page 1 ENGLISH MEB-3810 INStructIoN MaNuaL...

  • Page 2: Table Of Contents

    coNtENtS 1. SPEcIFIcatIoNS ...........1 6. HoW to uSE tHE oPEratIoN PaNEL ..38 6-1. Basic operation of the sewing machine ..38 2. NaME oF EacH coMPoNENt ....2 6-2. Setting the thread tension ......38 3. INStaLLatIoN ..........3 6-3. temporarily stopping the sewing machine ... 39 3-1.
  • Page 3 7-30. Setting the number of stitches of round 10-8. Height of the throat plate ........ 81 bar ..............56 (1) Height of the throat plate ........81 7-31. Setting the number of overlapping stitches (2) adjusting the height of the throat plate ..... 81 of round bar 2 ..........

  • Page 4: Specifications

    DO x 558 Nm90 - 120 (Needle count attached at the time of delivery: Nm110) Safety device Pause swtch & automatc stop functon at the tme of detecton of a trouble Lubrcatng ol JUKI MACHINE Oil No. 18 Main regulator: 0.5 MPa Ar pressure Hammer pressure regulator: Standard 0.35 MPa (max. 0.4 MPa) Ar consumpton 49.5 ℓ...

  • Page 5: Name Of Each Component

    2. NaME oF EacH coMPoNENt • Hand pulley 7 The needle bar can be lfted or lowered by hand wth the hand pulley. 1 Temporary stop swtch 5 Control box 9 Thread stand 2 Presser swtch 6 Power swtch !0 Feed base 3 Start swtch 7 Hand pulley 4 Operaton panel...

  • Page 6: Installation

    3. INStaLLatIoN DaNGEr : 1. the sewing machine should be installed by a trained technician. 2. contact the distributor or a professional electrician to ask him/her to carry out electric wiring. 3. the sewing machine has a mass of approximately 110 kg. Four or more workers are required to carry out the installation of the sewing machine and adjustment of the table height.

  • Page 7: Drawing Of The Table

    (1) Drawing of the table For the thread For the manfold mountng plate for needle thread clamp stand For cords For the manfold mountng plate For the regulator For the sub bracket table (left) For operaton panel For the operaton panel cord For the poly oler For the sub...

  • Page 8: Installing The Control Box

    3-2. Installing the control box Install control box 1 to the locaton llustrated n the figure using four bolts 2 , four plan washers 3 and four sprng washers 4 and four hexagonal nuts 5 suppled wth the unt. Install control box 1 30 mm or more away from the stand.
  • Page 9 2) connecting the power cable Voltage specifications are shown on the power indication tag attached on the power cable and on the rating plate adhered on the power box. Connect the cable which matches the specifications. Power indication tag rating plate (For example: In the case of 200V)

  • Page 10: Taking Out The Sewing Machine

    3-4. taking out the sewing machine DaNGEr : 1. the sewing machine should be taken out by a trained technician(s). 2. the sewing machine has a mass of approximately 110 kg. Four or more workers are required to take out the sewing machine. 3.

  • Page 11: Installing The Sewing Machine

    3-5. Installing the sewing machine WarNuNG : the sewing machine has to be carried by four or more workers. carry out the installation work on a level place. 1) Remove the paper liners from four bolt rubbers B 1 . Place and adhere the liners over the holes in the table.
  • Page 12 st step of the hnge stop- per. When rasng the sewng machne, refer to "3-6. raising Instruction Manual for MEB-3810 and returning the sewing machine" p. 10. WarNuNG : Do not raise the sewing machine above the 1st step of the hinge stopper.

  • Page 13: Raising And Returning The Sewing Machine

    3-6. raising and returning the sewing machine DaNGEr : 1. Do not lift the sewing machine for any purpose other than for installation, repair or adjust- ment in order to prevent accidents resulting in personal injuries due to pinching. In addi- tion, the sewing machine has to be lifted for repair or adjustment only by a maintenance technician who is familiar with the machine.
  • Page 14 1) To raise the sewing machine, firstly push feed base 2 away from you (in the direction of the arrow), then insert fl at-blade screwdriver 4 nto bottom-cover opening tool slot 3 , turn it coun- terclockwise to release the sewing machine up/ down lock 5 .
  • Page 15 [to lift the sewing machine from the 3rd to 4th step of the hinge stopper] 6) Hold rib 1 located on the front sde of the bed wth your rght hand to draw hnge stopper 6 n drecton of arrow A untl the lock s released. Then, slowly lft the sewng machne. 7) Hold ribs 1 and 1 ’...

  • Page 16: Installing The Poly Oiler

    3-7. Installing the poly oiler 1) Place the sewing machine in its home position. 2) Install oil drain cock 1 , oil seal 2 and washer 3 on bottom cover 5 with four setscrews 4 . 3) Raise the sewing machine. 4) Drive spring pin 7 of bottom cover 5 into bottom cover 5 until it is almost flush with bottom cover Take care not to crack bottom cover 5 when driving in spring pin 7 .

  • Page 17: Installing The Regulator And The Manifold

    3-9. Installing the regulator and the manifold 1) Install manifold asm. !0 on manfold mountng plate 9 wth four setscrews !1 . 2) Install solenoid valve !2 on manfold mountng plate 9 wth two setscrews !3 . 3) Install regulator asm. 1 on table 2 wth two set- screws 3 and two washers 4 .
  • Page 18 [For the needle thread clamp unit] 1) Install needle thread clamping manifold 1 on table 2 wth two wood screws 3 . At ths tme, nstall the manfold so that t s spaced approx- mately 40 mm from the solenoid valve in cross- wise direction and approximately 3 mm in length- wse drecton.

  • Page 19: Connecting The Cords

    3-10. connecting the cords DaNGEr : to prevent personal injuries caused by electric shock hazards or abrupt start of the sewing machine, carry out the work after turning oFF the power switch and a lapse of 5 minutes or more. to prevent accidents caused by unaccustomed work or electric shock, request the electric expert or engineer of our dealers when adjusting the electrical components.

  • Page 20: Handling The Cords

    3-11. Handling the cords DaNGEr : to prevent personal injuries caused by electric shock hazards or abrupt start of the sewing machine, carry out the work after turning oFF the power switch and a lapse of 5 minutes or more. to prevent accidents caused by unaccustomed work or electric shock, request the electric expert or engineer of our dealers when adjusting the electrical components.

  • Page 21: Installing The Foot Pedal Switch (Optional)

    3-12. Installing the foot pedal switch (optional) DaNGEr : to prevent personal injuries caused by electric shock hazards or abrupt start of the sewing machine, carry out the work after turning oFF the power switch and a lapse of 5 minutes or more. to prevent accidents caused by unaccustomed work or electric shock, request the electric expert or engineer of our dealers when adjusting the electrical components.

  • Page 22: Connecting The Air Supply

    3-13. connecting the air supply (1) connecting the regulator and the manifold 1) Connect joint 1 of the regulator and jont 2 of the manifold by means of the air tube (φ10 mm) [For the needle thread clamp] 1)-1. Connect air tube φ10 3 and jont 2 of the manifold by means of T-joint 4 whch has a short ar tube.

  • Page 23: Connecting The Air Tubes

    (2) connecting the air tubes Connect the respective air tubes coming from the sewing machine head to the respective solenoid valves matchng ther numbers correspondngly. No.1 No.2 No.3 No.4 No.5 No.6 No.7 No.8 No.15 No.9 No.39 (In the case of the needle No.10 thread clamp) No.16...

  • Page 24: Installing The Air Hose

    3-14. Installing the air hose ■ connecting the air hose Connect the ar hose to the regulator usng the hose band and quick-coupling socket joint sup- pled wth the unt. ■ adjusting the air pressure Open ar cock 1 . [Main regulator] Pull up and turn ar pressure regulatng knob 3 of man regulator 2 to adjust the pneumatc pres-...

  • Page 25: Cautions For The Compressed Air Supply (Source Of Supply Air) Facility

    When the supply air contains a considerable amount of carbon and dust Mist separator (Most troubles in the air solenoid valves are caused by carbon.) Be sure to install a mist separator. Standard equipment supplied by JuKI Filter regulator air solenoid valve air cylinder cautions for main piping •...

  • Page 26: Installing The Thread Stand

    3-16. Installing the thread stand 1) Assemble the thread stand asm. and install it in the hole in the rear left part of the table. 2) Tighten locknut 1 so that the thread stand is fixed. – 23 –...

  • Page 27: Installing The Thread Guides

    3-17. Installing the thread guides 1) Remove two thread guide plates 1 and setscrew 2) Reverse one of thread guide plates 1 . Install the thread gudes so that they turn by approxmately 40 degrees to allow the thread to pass smoothly. 40°...

  • Page 28: Installing The Eye Protection Cover And The Finger Guard

    3-18. Installing the eye protection cover and the finger guard DaNGEr : The eye protection cover and the finger guard are used to protect eyes against flying broken needle. Be sure to use the sewing machine with them installed without exceptions. 1) Assemble finger guard 1 to safety plate bracket 2 wth two setscrews 3 .

  • Page 29: Installing The Cloth Chip Bag

    3-19. Installing the cloth chip bag 1) Connect cloth chip suction device 1 and cloth chip tube 2 . Fix them with hose band 6 . 2) Install suspension hook 3 to an easy-to-access location on the underside of the table. 3) Suspend cloth chip bag 4 on suspension hook 3 . 4) Open the zipper of cloth chip bag 4 to put cloth chip suction device 1 in it.

  • Page 30: Installing/Removing The Presser Unit

    3-20. Installing/removing the presser unit carefully prevent contact between the cloth trimming knife and the work clamp plate when mov- ing the feed base by hand or installing/removing the work clamp unit. ■ How to install 1) Install the presser unit so that presser lever 3 fits n the letter “U”...

  • Page 31: Preparation Before Operation

    Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. ＊ Use JUKI MACHINE OIL No. 18 as the machine oil. (1) Lubricating the arm oil tank Lubricate arm tank 1 to such an extent of approxi- mately 80 %.

  • Page 32: Lubricating The Looper And Spreader Components

    (3) Lubricating the looper and spreader components 1) Remove the presser plates, right and left. 2) Apply two to three drops of oil to looper link 1 , spreader lnk 2 , spreader, rght 3 , spreader, left 4 and spreader actuatng cam 5 . Be sure to lubricate the components once a day.

  • Page 33: Lubricating The Needle Bar And The Gear Section

    (5) Lubricating the needle bar and the gear section Lubricate the components at the time of delivery or after an extended period of disuse. 1) Loosen setscrews 1 and remove face plate 2 . 2) Apply one or two drops of oil to needle bar bush- ng 3 , needle bar 4 and felt 8 .

  • Page 34: Attaching The Needle

    4-2. attaching the needle WarNING : turn oFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. The correct drecton of the needle s that needle Insert the needle thread gude 1 faces the opposite side of groove of until it will go no the needle.

  • Page 35: Threading The Machine Head

    4-3. threading the machine head WarNING : turn oFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. (1) threading the upper thread (needle thread) – 32 –...

  • Page 36: Threading The Lower Thread (Looper Thread)

    (2) threading the lower thread (looper thread) For the model provided with the needle thread clamp unit Needle thread trimmer type Gimp Looper thread thread trimmer retaining plate 1. When passing the looper thread, turn looper bracket by 180 degrees of an angle in advance. 2.

  • Page 37: Threading The Machine With Gimp

    (3) threading the machine with gimp In case of thin thread, insert gimp in the gimp presser plate. 4-4. How to set the cloth on the sewing machine 1) Enter the sewing material until it comes in contact with cloth patches 1 , rght and left. 2) Loosen setscrews 2 , right and left and adjust the sewing position by moving the cloth patches to and fro.

  • Page 38: Structure Of The Operation Switch

    5. StructurE oF tHE oPEratIoN SWItcH 5-1. Structure of the operation panel [table of functions of the operation panel] Name Descrpton This LED goes out when the sewing machine is in data setting state and lights up Sewng when the sewing machine is in sewing state. The status of the LED is changed over by the Ready key.
  • Page 39 Name Descrpton + / FOR- This key is used to increment the set value of data or the count value on the coun- WARD ter when setting the data. It is used to move the feed forward by one stitch in the pause state.

  • Page 40: Temporary Stop Switch

    5-2. temporary stop switch Ths swtch stops the operaton of the sewng machne. temporary stop switch 5-3. Hand switch [Presser switch (right) 1 ] This switch performs up/down of the presser. Start switch lamp [Start switch (left) 2 ] Ths swtch performs the start of sewng. When the start switch is effective, the start switch lamp flashes on and off.

  • Page 41: How To Use The Operation Panel

    6. HoW to uSE tHE oPEratIoN PaNEL In the case the sewing machine stops with its needle-bar rested in any position other than the upper end when the rEaDY key is pressed, Error (E030) will occur to stop the sewing machine. In this case, turn the hand pulley to move the needle bar to its upper stop position.

  • Page 42: Temporarily Stopping The Sewing Machine

    6-3. temporarily stopping the sewing machine ■ How to stop the sewing machine 1) Press temporary stop switch 1 . 2) The sewing machine stops and “E050” is displayed. ■ How to re-start 1) While "E050" is shown on the screen, press RESET key 2 to release the error and to restore the screen to the dsplay before the oc-...

  • Page 43: Performing Re-Sewing

    6-4. Performing re-sewing Sewing can be performed without cloth-opening operation of the presser foot. If the Sewing LED stays oN, press the ready key to turn it oFF. 1) Press Mode key 3 to dsplay the mode set- ting screen. Press –/BACKWARD key or +/FORWARD key 7 to display "oPEn".

  • Page 44: Performing Threading

    6-5. Performing threading WarNING : turn oFF the power after operation of steps 1) and 2), and replace needle, thread, cloth cutting knife or hammer. this operation cannot be carried out immediately after power-on. carry out the following opera- tion after the origin retrieval of the feed bar/needle bar by pressing once the ready key 1) Press Threading key !0 .

  • Page 45: When Dropping Of The Knife Is Temporarily Not Desired

    6-7. When dropping of the knife is temporarily not desired 1) Press Knife ON/OFF key !1 to make Be- fore-cut knife LED F and After-cut knife LED G go out. 2) Press Knife ON/OFF key !1 agan to lght F or After-cut knife up Before-cut knife LED G to enable the operaton of the knfe.
  • Page 46 Sewing machine operation under each operation mode (1) NorMaL mode (when the operation mode is set to "0" and the power is oN) Operation is carried out under the normal operation mode where the cloth cutting knife is activated and a sewing sequence such as sewing and thread trimming is carried out by operating the Presser foot switch and the Start swtch.

  • Page 47: Changing Procedure Of The Sewing Pattern

    6-9. changing procedure of the sewing pattern If the Sewing LED stays oN, press the ready key to turn it oFF. 1) Press – key 4 or + key 5 to select the pattern number B you want to sew. (The num- ber of pattern whch s not regstered s not ds- played.) 2) Press READY key...

  • Page 48: Setting Procedure Of The Sewing Data

    7. SEttING ProcEDurE oF tHE SEWING Data In the case the sewing machine stops with its needle-bar rested in any position other than the upper end when the rEaDY key is pressed, Error (E030) will occur to stop the sewing machine. In this case, turn the hand pulley to move the needle bar to its upper stop position.

  • Page 49: Setting The Knife No

    ＊ the data No. is stated in 2-digit LED B and the example of the set value is stated in 4-digit LED c as shown below. ● The setting range is stated in the respective sentences. ● Corrected stitches are represented by the stitch shape as observed from the right side of the material. Wrong side right side of stitching...

  • Page 50: Setting The Cut-Before/Cut-After Knives

    7-3. Setting the cut-before/cut-after knives Set whether the cut-before knife or the cut-after knfe. Set the knife number by means of –/BACKWARD 6 or +/FORWARD key The knife can be set within the range given in the table below. Set value Cloth cuttng knfe operaton Wthout knfe Before-cut knife...

  • Page 51: Setting The Cut Space

    7-6. Setting the cut space Set the clearance where the knfe drops n the paral- lel secton. Set the knife number by means of –/BACKWARD 6 or +/FORWARD key The space can be set –.2 to .2 mm n the ncre- ments of 0.1 mm.

  • Page 52: Number Of Stitches Of Sewing End Compensation

    7-9. Number of stitches of sewing end compensation Number of sttches of sewng end can be ncreased at the same sewng ptch. Set the knife number by means of –/BACKWARD 6 or +/FORWARD key – Wthout bartack ..1 to 6 stitches –...

  • Page 53: Compensation Of Eyelet In Lateral Direction

    7-12. compensation of eyelet in lateral direction Position on the top of eyelet can be moved to the right- or left-hand. Set the knife number by means of –/BACKWARD 6 or +/FORWARD key Setting can be performed –0.6 to 0.6 mm in the in- –...

  • Page 54: Compensation Of Left Parallel Section Of A Buttonhole

    7-15. compensation of left parallel section of a buttonhole Length from the bottom of eyelet to the left sde of parallel secton can be adjusted. Set the knife number by means of –/BACKWARD 6 or +/FORWARD key Settng can be performed － 0.6 to 0.6 mm in the in- crements of 0.1 mm.

  • Page 55: Setting The Needle Throwing Width Of The Left Bottom Of Eyelet

    7-18. Setting the needle throwing width of the left bottom of eyelet Needle throwng wdth of the left sde of the bottom of eyelet can be set. Feed base s actuated wth the needle throwng to change the sewng wdth. Set the knife number by means of –/BACKWARD 6 or +/FORWARD key It can be set in increments of 0.1 mm within the...

  • Page 56: Setting The Length Of Taper Bar

    7-21. Setting the length of taper bar Set the length of taper bar. Set the knife number by means of –/BACKWARD 6 or +/FORWARD key The taper bar length can be set n ncrements of  mm in the range from 3 to 15 mm. Length 7-22.

  • Page 57: Setting The Number Of Stitches Of Slant Section Of Taper Bar

    7-24. Setting the number of stitches of slant section of taper bar Number of sttches of the slant secton from the taper bar to the parallel secton can be set. Set the knife number by means of –/BACKWARD 6 or +/FORWARD key The number of sttches can be set n the range from two to (the number of stitches of taper bar).

  • Page 58: Setting The Number Of Stitches Of Straight Bar

    7-27. Setting the number of stitches of straight bar In ths step of procedure, the number of sttches of straght bar s to be set. Set the knife number by means of –/BACKWARD 6 or +/FORWARD key The number of sttches can be set accordng to the straght bar length usng the sttch length wthn the range from 0.5 to 4 mm.

  • Page 59: Setting The Number Of Stitches Of Round Bar

    7-30. Setting the number of stitches of round bar The number of stitches of the round bar is set. Set the knife number by means of –/BACKWARD 6 or +/FORWARD key The number of stitches can be set 4 to 20 stitches. In the case the round bar is selected for the type of bartack, the number of overlap- ping stitches at the beginning and end of sewing can be set using Data No. 9 "Com-...

  • Page 60: Setting The Needle Throwing Width At The Upper Section Of Eyelet Bar

    7-33. Setting the needle throwing width at the upper section of eyelet bar The needle throwng wdth at the upper secton of eyelet bar s set. Change the sttch wdth by operatng the feed base along wth the needle throwng operaton. Set the knife number by means of –/BACKWARD 6 or +/FORWARD key The needle throwng wdth can be set n the range of...

  • Page 61: Setting The Soft Start

    7-37. Setting the soft start Sewng speed at the sewng start can be lmted. Set the knife number by means of –/BACKWARD 6 or +/FORWARD key The soft start can be set in the range from 0 (zero) to six revolutions. * Two rotatons of the nner needle and outer nee- dle correspond to one sttch.

  • Page 62: Adjustment Of Each Part

    8. aDJuStMENt oF EacH Part 8-1. adjusting the pressure of the cloth trimming knife WarNING : 1. turn oFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 2. to avoid unexpected personal injuries, keep away from the looper thread trimming knife and cloth trimming knife during the adjustment procedure.

  • Page 63: Adjusting The Stitch Bite Width

    8-2. adjusting the stitch bite width WarNING : turn oFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 1) Open needle rocking adjustment cover 1 . 2) Turn the handwheel to bring the needle bar to its lowest poston.

  • Page 64: Adjusting The Presser

    8-3. adjusting the presser WarNING : turn oFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. ■ adjusting the height of the presser 1) Remove auxiliary presser plate cover 1 . 2) Loosen screw 2 and adjust the heght of the presser.

  • Page 65: Adjusting The Presser Opening Amount

    8-4. adjusting the presser opening amount ■ How to check the cloth opening amount 1) Turn the power ON. Press the READY key to light up the sewing LED. 2) Press the knife ON/OFF key to turn off the LED to disable the cloth trimming knife. 3) Press the presser switch and press the +/FOR- WARD key .

  • Page 66: Adjusting The Needle Thread Drawing Amount

    8-5. Adjusting the needle thread drawing amount WARNING : Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. ■ Adjusting the drawing amount of the needle thread at the sewing start Carry out the adjustment with the air supplied. Loosen screw 2 and move thread drawing arm 1 in direction A or B to adjust the drawing amount of the needle thread.

  • Page 67: Adjusting The Remaining Amount Of The Gimp

    8-7. adjusting the remaining amount of the gimp WarNING : 1. turn oFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 2. to avoid unexpected personal injuries, keep away from the looper thread trimming knife and cloth trimming knife during the adjustment procedure 1) Loosen setscrew 1 .

  • Page 68: Needle Thread Clamp Unit (Optional)

    8-9. Needle thread clamp unit (optional) WarNING : turn oFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. When the clamp of the needle thread clamp unt s n the lower poston, standard heght a of the un- dersde of the clamp from the top surface of presser support plate 2 is 6 mm.

  • Page 69: Adjusting The Brightness Of The Hand Lamp

    8-10. adjusting the brightness of the hand lamp The brghtness of the hand lamp can be adjusted on the operaton panel. 1) Select the memory switch operation mode. "13. MEMorY SWItcH" p.95 Refer to for how to operate the memory swtch operaton mode. 2) Press –...

  • Page 70: How To Use The Various Functions

    9. HoW to uSE tHE VarIouS FuNctIoNS refer to "13. MEMorY SWItcH" p.95 for how to set the memory switches described below. 9-1. operating procedure of thread tension compensation of each section Thread tension of each section of the sewing shape can be individually changed. The thread tension applied to each section of a buttonhole is the value obtained by adding the respective compensated values to the needle thread tension set value (No.
  • Page 71 compensation Setting item Description position No. Compensaton of needle thread tenson of sewng start Compensation value of needle thread tension of sewng start Compensaton of needle thread tenson of sewng end Compensation value of needle thread tension of sewng end Compensaton of needle thread tenson at the tme of Compensation value of needle thread tension at thread trmmng...
  • Page 72 Fg. 2 [compensation position of straight bar] Data No. 43 compensation of needle thread tension of top eyelet Data No. 44 compensation of needle thread Data No. 45 compensation of needle thread tension of right bottom of eyelet tension of left bottom of eyelet Data No.

  • Page 73: Changing The Setting Position Of Cloth

    9-2. changing the setting position of cloth The settng poston of the materal can be changed to the front sde or the sewng start poston n the case of cut-after knife/without knife. (1) To set the material setting position at the front side for every type of knife setting, i.e., cut-before knife/ cut-after knife/without knife.

  • Page 74: Copying The Pattern Data

    9-7. copying the pattern data In ths step of procedure, the pattern data s to be coped. If the Sewing LED stays oN, press the ready key 1 to turn it oFF. 1) Press Mode key Mode key 3 to dsplay the mode settng screen.

  • Page 75: Deleting The Pattern Data

    9-8. Deleting the pattern data In ths step of procedure, the pattern data s to be deleted. If the Sewing LED stays oN, press the ready key to turn it oFF. 1) Press Mode key 3 to dsplay the mode set- ting screen.

  • Page 76: Maintenance

    10. MAINTENANCE 10-1. Looper thread trimming (overall thread trimmer type) WARNING : 1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trim- ming knife during work.
  • Page 77 To adjust the timing between the needle and the looper, adjust the needle throwing width and check the needle bar height in advance. The inside needle means the innermost needle entry and the outside needle means the outermost needle entry of the needle throwing width employed for sewing an eyelet buttonhole. 1) Loosen two setscrew 6 in the looper driving cam. Bring the needle bar to the lower dead point of the inside needle. Turn looper driving cam 3 by hand so that the flat plane of looper driving cam 3 faces to the lower left at 45 degrees to 45°...
  • Page 78 3) Adjust with looper driving cam 3 , so that the Needle inside blade point of the left looper is aligned with the center of the needle when the needle bar goes up 3 mm from the lower dead point of the inside nee- dle.

  • Page 79: Height Of The Needle Bar

    10-3. Height of the needle bar (1) adjusting the needle bar height WarNING : 1. turn oFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 2. to avoid unexpected personal injuries, be sure to keep away from the looper thread trimming knife during work.

  • Page 80: Adjustment To Prevent Triangular Stitch Skipping In The Case Of A Narrow Needle Throwing Width

    10-4. Adjustment to prevent triangular stitch skipping in the case of a narrow needle throwing width For sewing with the narrow needle throwing width of Throat plate 2 mm or less, the outer needle enters the left side of Spreader, left the looper thread triangle (C section) when the outer Outer needle comes down during sewing in the standard needle adjustment state.

  • Page 81: Clearance Between The Needle And The Looper

    10-5. clearance between the needle and the looper WarNING : 1. turn oFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 2. to avoid unexpected personal injuries, be sure to keep away from the looper thread trimming knife during work.

  • Page 82: Clearance Between The Spreader And Looper And The Opening Timing Of The Spreader

    10-7. clearance between the spreader and looper and the opening timing of the spreader WarNING : 1. turn oFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 2. to avoid unexpected personal injuries, be sure to keep away from the looper thread trimming knife during work.
  • Page 83 Loosen setscrew 5 in the spreader stopper and adjust the position of spreader stopper 6 . Then fix the spreader in place. (Make the same adjust- ment for both left/right spreaders.) ● Timing to open/close the spreaders To aligne In the case of the outer needle, the correct timing is such that the left spreader completely closes at the moment when the end face (side face) of the needle is aligned with the top end of the left...

  • Page 84: Height Of The Throat Plate

    10-8. Height of the throat plate (1) Height of the throat plate Install the throat plate at the poston where top sur- face 2 of the throat plate is 0.4 mm below top sur- face 1 of the support plate. (2) adjusting the height of the throat plate The heght of the throat plate should be adjusted n the followng procedure.

  • Page 85: Position Of The Presser Foot

    10-9. Position of the presser foot WarNING : 1. turn oFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 2. to avoid unexpected personal injuries, be sure to keep away from the looper thread trimming knife during work.

  • Page 86: Installing Position Of The Needle Thread Trimming Knife

    10-11. Installing position of the needle thread trimming knife WarNING : 1. turn oFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 2. to avoid unexpected personal injuries, be sure to keep away from the looper thread trimming knife during work.

  • Page 87: Cleaning

    10-12. cleaning WarNING : 1. turn oFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 2. to avoid unexpected personal injuries, be sure to keep away from the looper thread trimming knife during work.

  • Page 88: Replacing Consuamables

    10-14. Replacing consuamables (1) Worn-out of the hammer face WARNING : 1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming knife during work.

  • Page 89: Replacing The Cloth Cutting Knife And The Hammer

    (2) Replacing the cloth cutting knife and the hammer WARNING : 1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming knife during work. ■ Replacing the hammer 1) Loosen thumbscrew 1 and remove hammer 2 . 2) Tighten thumbscrew 1 with the new hammer pressed against stopper 3 .

  • Page 90: Replacing The Looper Thread Trimming Knife (Overall Thread Trimmer Type)

    (3) replacing the looper thread trimming knife (overall thread trimmer type) WarNING : 1. turn oFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 2. to avoid unexpected personal injuries, be sure to keep away from the looper thread trimming knife during work.

  • Page 91: Replacing The Needle Thread Trimming Knife

    ng machne s lfted by strappng front foot secton 1 of the bed with a piece of string as shown in the figure at the left, immediately change the gas spring with JUKI's genuine gas spring (part num- ber: 40100390).

  • Page 92: Replacing The Gas Spring

    (7) replacing the gas spring DaNGEr : Replacement work has to be carried out within the defined range by a service tech- nician who has full knowledge of the machine. 1) Lift the sewing machine until the hinge stopper reaches ts 4th step and let the hnge stopper lock the sewing machine.

  • Page 93: Exchanging Gauge Parts And Optional

    11. EXcHaNGING GauGE PartS aND oPtIoNaL 11-1. throat plate Name of part * (for narrow needle (for wide needle throw- * (for narrow needle (for wide needle throw- throwing width) ing width) throwing width) ing width) applicable needle 2.0 to 3.2mm 2.0 to 4.0mm 2.0 to 3.2mm 2.0 to 4.0mm...

  • Page 94: Presser Holding Plate

    11-3. Presser holding plate Eyelet buttonhole presser Eyelet buttonhole presser Eyelet buttonhole presser Eyelet buttonhole presser Name of part holdng plate, left holdng plate, rght holdng plate, left holdng plate, rght Shape of hole Eyelet buttonhole Eyelet buttonhole Stitch length 10 to 34 10 to 38 Shape...

  • Page 95: Hammer

    11-5. Hammer Name of part For eyelet buttonhole Name of part For decorative buttonhole Shape Shape Size (mm) Part No. Remarks Size (mm) Part No. Remarks 14042501 40115670 [J accessories] 40115669 32064404 [C accessories] 40115668 32064503 [J] 40115667 14042600 [C] 40115666 32064602 32067209 32064701...

  • Page 96: Troubles And Corrective Measures In Sewing

    12. trouBLES aND corrEctIVE MEaSurES IN SEWING Phenomenon cause corrective measure Page . Sttch skppng • The needle s bent. There s a scratch on the • Check and replace the needle. needle. The needle s ncorrectly attached. • Knd of needle s wrong. •...
  • Page 97 Phenomenon cause corrective measure Page 6. Looper thread break- • The looper thread tenson s too hgh. • Adjust the sewng condtons to obtan an appropr- 38, 67 ate thread tenson. • The installing position of the left-hand • Check and adjust the nstallng poston. spreader s ncorrect.

  • Page 98: Memory Switch

    13. MEMorY SWItcH 13-1. operating procedure In ths step of procedure, the Memory swtch settng s to be carred out. If the Sewing LED stays oN, press the ready key to turn it oFF. 1) Press Mode key 3 to dsplay the mode set- ting screen.

  • Page 99: Memory Switch List

    13-2. Memory switch list Setting Setting Initial Function Description range unit value 400 to Max. sewng speed Max. sewng speed s set 2,500 2,500 sti/min Soft-start speed setting Lmted speed at the sewng start of the sewng machne s 400 to 1st stitch (Inside needle →...
  • Page 100 Setting Setting Initial Function Description range unit value After-cut knife temporary stop selection Whether or not the machine is stopped before the after- cut knfe operates and the cloth cuttng knfe s operated by means of the start swtch s selected 0: Normal operation 0 to 1 1: The sewing machine automatically stops before the after-...

  • Page 101: Error List

    14. Error LISt Description How to reset Sewng machne motor error Turn OFF the power. Sewing machine motor doses not run or signal does not enter even when t s runnng. Machne head memory error Model type, memory swtch data and stan- In the case data on the machine head memory has broken (Note 4) dard patterns are initialized after pressing the...
  • Page 102 Description How to reset Faulty main shaft hole sensor/position sensor Turn OFF the power. In the case the hole sensor/position sensor of the sewing machine is faulty Reverse rotation of main shaft motor Turn OFF the power. In the case the main shaft motor rotates in the reverse direction of rota- ton Emergency stop switch Turn OFF the power.
  • Page 103 Note 1 : Set the thread tension within the range of 0 ≦ thread tension ＋ compensation value of thread tension ≦ 200. Note 2 : L = cut length ＋ taper bar length ＋ crosswise compensation of left eyelet ＋ crosshwise com- pensation of left parallel section ＋...

  • Page 104: Standard Pattern List

    15. StaNDarD PattErN LISt J type Pattern No. c type Pattern No. Data Setting item Shape Knfe No. Cut length Cut-before/cut-after knfe Number of sttches of parallel Number of sttches of eyelet Cut space Eyelet space C o m p e n s a t  o n o f knfe poston C o m p e n s a t  o n o f number of sttches at...

  • Page 105: Sewing Data Entry Sheet

    16. SEWING Data ENtrY SHEEt Setting item Description Setting range unit Knfe No. Shape of knfe * 0 to 6 Cut length Length of cloth cuttng knfe Operaton of cloth cuttng knfe Cut-before/cut-after knife 0 to 2 0 : Without knife　1 : Cut-before knife　2 : Cut-after knife Number of sttches of parallel Number of sttches from parallel secton to bottom of eyelet 3 to 100stitch...
  • Page 106 Setting item Description Setting range unit Compensaton of needle Compensation value of needle thread tension at right side of parallel thread tenson at rght paral- secton lel secton Compensaton of needle Compensation value of needle thread tension at left side of parallel thread tenson at left parallel secton secton...

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