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Contents
1. 3 3 E 32. 2 2 1 2 2 2 3 4
3. V Vil FOR SAFE OPERATION To avoid immediate rotation of the machine after turning the power on check to be sure that the cloth feed cam on the machine head is in the stop motion position To avoid possible personal injury never operate the machine with safety devices such as belt co
4. V
5. COR 1 1096
6. Assemble the thread stand and set it in the hole in the table Tighten nut to fix the thread stand If ceiling wiring is made pass the power cord through spool rest rod 44 EIR FLL SRAERLO oz TID 2 223 REMOVING THE BELT COVER RES N eI _ K EBs 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
7. 1 MM V SA 2 4 5 V 6
8. 5 10 BRRR PEE SI PIAA BME 11 AAO FEAR SEE ch SSI A BET 12 13 14 15 Hoe 16 17 18 MZE J UK I 19 2
9. 4 5 6 lt A TE 9 11 MATERIALS AND NEEDLES BE USED St Al Th HEA st HARHA F TE mam 11 DPx5 D2426282C00 14 DPx5 82426280000 16 DPx5 B2426280000 18 DPx5 B2426280000 Material Needle Needle plate needle hole guide Class or work Extra light weight material 11 DPx5 D2426282C00 Knit goods tricot wear Synthetic fiber material 14 DPx5 SUPER needle B2426280000 standard Men s suits Ladies wear Medium wei
10. 5 Attach bobbin to bobbin winder spindle Thread the winder in the order as illustrated and wind the thread onto the bobbin four or five turns Push bobbin winder trip latch towards the bobbin in the arrowed direction and the winder starts to wind the bobbin The winder will automatically stop as soon as it has wound a predeter mined amount 80 of the capacity of the bobbin of thread round the bobbin To adjust the amount of thread wound round the bobbin Ioosen nut and screw in adjusting screw to decrease the thread amount If the thread is not wound evenly round the bobbin loosen screw and move bobbin winder base in the arrowed direction to make adjustment Caution Ensure to use the genuine JUKI bobbin case and bobbin 4 5 16 THREADING THE BOBBIN CASE 2 5cm 1 BRAAT BRANT HABER 2 LER ERO MRR
11. 6 8 0 3 0 5N KHEBOMM ILOREOEOLH RATES AOGE E HBS 0 The normal stroke of thread take up spring is 6 to 8 mm and the tension at the starting point is 0 3 to 0 5N Adjusting the stroke Loosen screw and turn tension controller assembly clockwise to increase the stroke or counterclockwise to decrease it Adjusting the tension Insert the blade of a flat bit screwdriver into the groove in the tension post and turn it clockwise to increase the tension or counterclockwise to decrease it Caution Decrease the tension of the thread take up spring fora synthetic fiber thread 19 ADJUSTING THE LENGTH AND WIDTH OF BAR TACKING MART Wea Bi EE N EJ _
12. SC 35C 35 85 IMPORTANT SAFETY INSTRUCTIONS Putting sewing systems into operation is prohibited until it has been ascertained that the sewing systems in which these sewing machines will be built into have conformed with the safety regulations in your country Technical service for those sewing systems is also prohibited 1 Observe the basic safety measures including but not limited to the following ones whenever you use the machine 2 Read all the instructions including but not limited to this Instruction Manual before you use the machine In addition keep this Instruction Manual so that you may read it at anytime when necessary 3 Use the machine after it has been asce
13. 1 2 1 2 V 1 2 3
14. 2 5 1 Xx 32mm V 30mm 2
15. FEL ROE AMF RCOLENATL PARAS 2 0 5 59 212 Adjusting the needle thread tension As thread tension controller No 1 is turned clock wise the length of the thread remaining on the needle after thread trimming will decrease and vice versa Minimize the length of the thread remaining on the needle as far as the thread does not slip off the needle As thread tension controller No 2 is turned clock wise the needle thread tension increases and vice versa Adjusting the bobbin thread tension Turning thread tension adjusting screw clockwise will increase the bobbin thread tension and vice versa By BE DEAA SAHRA BA 8 FI ASR ECR a SEG JERAR gt 18 ADJUSTING THE THREAD TAKE UP SPRING Decrease Increase Increase L KRR SON EBM EA 6 8mm gt PHR 0 3 0 5N SPREE ERAJ RESTOR gt ae
16. 1 Open cylinder arrn cap Q 2 Raise and hold the latch lever of bobbin case to take it out The bobbin in the bobbin case does not fali as far as latch lever is raised and held 3 To load the bobbin case into the shuttle fit it onto the shaft of the shuttle and snap in the latch lever of the bobbin case L PRENEO 2 MERR Hh F FRESE B 3 11 15 WINDING A BOBBIN 1 O Hi ERA 2 ETT ERR TS BTS BE 4 5 HAAR 3 GRA RRR O 80 4 gt RRB SRR SAREEN o 5 Ba PRA REAR JUK 1 REY OtreHOILELAAET 2 4 5 3 8 80 4
17. 5 6 4 9 9 2 Operate the sewing machine in the following procedure 1 Turn on the power switch 2 Depress the starting pedal a little and the work clamp foot will come down When you want to make the work clamp foot go up release the pedal 3 Further depress the pedal and the sewing machine starts bar tacking Immediately after the sewing machine starts bar tacking release the pedal 4 When the machine has completed the specified bar tacking cycle the work clamp foot will automatically go up and the needle and bobbin threads are trimmed before the machine stops Cautions 1 To operate Be sure to release the pedal as soon as the machie starts bar tacking or else the machine will not stop at the prodetermined point If you fail to depress the pedal sufficiently the machine may stop at the first st
18. 1 2 Loosening setscrew insert needle fully into the needle bar hole with the long groove of the needle facing towards you then tighten setscrew Q Cautions 1 If the bar tacking stitches as shown above are produced install the needle so that it slightly faces to the left 2 Use a SUPER needle for synthetic fiber when sewing with synthetic fiber thread or material 10 13 THREADING THE MACHINE lt A 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 7 s A ta S K 4 cm 1
19. 8 Y 9 10 11 12 ix 1 1 1 ne 3 2 STED LOA i p 3 4 4 5 5 6 i 5 7 i 6 8 9 8 ki 9 11 i
20. Mi 2 1 2 1
21. V 10 mm 6 MHRA ABH OLTHE AFPRGRVE RSH bh RO 10mm e 8 ATTACHING THE CHAIN Lars 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 YOULL HHL S OORMILD SANSHEROL OH Hook S shaped hook into the hole in the tip of starting lever and attach chain to the S shaped hook 8 OHIE srs 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 gt Supply 1 RRB
22. Oo 17 o 17 O 15 5 Oo 15 15 o 10 DADZA ISFE O 14 15 6 EIR TS 12 v S 16 12 7 17 23 29 TROUBLES AND CORRECTIVE MEASURES r time of thread trimming 1 position
23. a PRE LARFO RAAS EARS 4 MEARBAA FTES PERE MH A ORAS gt ARERR O AARRE The lift of the work clamp foot can be adjusted up to 17mm 1 With the machine in stop mode remove five setscrews to take off top cover 2 Apply L shaped wrench to socket screw of clamp and loosen socket screw 3 Push down L shaped wrench to increase the lift of the work clamp foot or pull it up to decrease the lift 4 Securely tighten socket screw after adjustment 5 If the right and left work clamp feet are not levelled loosen screw and adjust the position of work clamp foot lever support plate to level them Caution Be careful not to cause work clamp foot lever support plate to interfere with feed bracket If the work clamp foot lever support plate interferes with the wiper readjust the height of the wiper using setscrew 0 HEAR ERO HARM ERO 27 ADJUSTING THE SAFETY PLATE WARNING To protect against possible
24. 26 0 5 2 DHODO 0 mm 1 Confirm that the paw section of thread release lever rides completely the mound section of disk floating notch when the machine is in the stop motion state At that time adjust with nut of the wire setting screw so that the protruding amount of tension release bar becomes 26 0 5 and tighten it 1 For the disk floating timing confirm that the disk starts floating Se PESTA REZAR RES HW Lc from the state that the eyelet of the thread take up lever has come nearly to the horizontal line when the thread take up lever goes up at 0 26 the last stitch
25. 7 tie RAH MAE A 0 05 0 1mm 8 _ 22 ADJUSTING THE THREAD TENSION RELEASE TIMING Ste E 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 5 2 4mm 1 Remove five setscrews to take off top cover 2 Loosen socket
26. N vi LK 1850 1 V
27. 2 E _ 1 2 1 2 1 1
28. LK 1850S LK 1852 20 LK 1852S 3 1 FRR AM BE 496 27 3H HE rpm 1800 lt a2 aR I BOREL sets a AY ome 2 28 l 42 28 28 1 FA ARREST BT I A gt BE 1 5 3 DURE Fe RE 8 16 6 5 14 14 DPx5 14 16 lt DPx5 11 i 17mm lt lt No 2 UK I 2 MERE A 25 35mm 13547005 ALARA RIA 13547112 o 7 SWARE O 4mm 13523188 P 13545959 2 RRA AUR te 22 29 11 515588 RA CR 1 DERM IC AIRED 5 Oo 0 05 0 1mm 15 O 16 oO 12 13
29. 5 6 0mm 7 0 05 0 1mm W 8 Adjusting the height of the needle bar 1 Turn the changeover pulley by hand to bring needle bar to the lowest position of its stroke see operate the sewing machine manually 2 Remove the rubber and loosen setscrew 3 Turn the driving pulley by hand to make upper marker line engraved on the needle bar meet the bottom end of lower bushing of the ne
30. 5 lt lt au 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 2 3 9 0 4 2 5 2 3 Supply grease to the reducer in accordance with the following procedure when the machine hasbeen used for more than half y
31. 1 5 2 5 mm that the longitudinal clearance between safety plate and lifting lever is 1 5 to 2 5mm during the high speed bar tacking the work clamp foot is down ZK OM BARA ONES AR 1 5 2 5mm e No 2 2 25 35mm 3 0 4mm 13523188 P 13545959 2 20 2 R LK 1850 LK 1852 5 LK 1854 10 LK 1852 20 LK 1852 30 LK 1854 40 1 1 Ta 1 1 lt lt 42 oa AAA SSE
32. 12 O 17 14 2 oOo RKO OAT FEDS SB Oo o 18 15 ORIN EWS TS 12 oO 13 DALRA OER CIR 2 8 10 o 18 Oo 14 oO 10 oO 15 4 DHE 2 AMY PUA ii o oO 17
33. To remove the belt cover loosen screw and tilt the belt cover away from you until it comes off then lift it Install the belt cover by reversing the above proceduce PAAR lt 005 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 E 1 ROLL TN EOR 2 1 RRR EER GK T AFT FRO 2
34. 1 2 JUKI No 2 2 BERET BERGA 5 1 1 1 EROL TARO L CMBEMLET 2 No 2 2 1 Lubricate the machine once a day from lubrication hole The machine can also be lubricated by removing rubber plug 2 Use Juki New Defrix Oil No 2 or spindle oil No 2 as the lubricating oil When using the thread guide of silicone oil lubricating unit optionally available Supply silicone oil through silicone oil lubricating hole when using thread guide of silicone oil lubricating unit At this time check that the thread which has passed through thread guide has the silicone oil on it 10 OPERATING THE SEWING MACHINE 24
35. 1 JUKI 2 1 2 Hi
36. 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 A 9 A B Cw FULT ER SOD B 13 Adjusting the bartacking length Push and open bed cover A in the arrowed direction and loosen nut Move feed across regulator towards you to increase the bartacking length or away from you to decrease it After adjustment tighten nut and close bed cover Adjusting the bartacking wid
37. v 2 3mm 4 15 RV ALR ERS 5 Vv 10mm W 6 v 10mm Attaching the belts 1 Set high speed V belt on the large diameters of high speed pulley and the motor pulley 2 Set eo V belt on the small diameters of low speed pulley and the motor pulley through pressure decreasing pulley and idler pulley 3 Move the motor pulley back or forth to
38. 1 M type belts are used for this model of sewing machine 2 This sewing machine users two V belts one for high speed sewing and the other for low speed sewing 3 The table below shows the relation between the motor pulleys V belts and sewing speeds Frequency Sewing speed Motor pulley part No Engraved mark High speed V belt mm Low speed V belt mm 2300rpm 13531108 50 2300 MTJVM005000 1270 __ 50Hz 2000rpm 13531207 50 2000 MTJVM004900 1245 MTJVM004600 1168 1800rpm 13531306 50 1800 MTJVM004800 1219 2300rpm 13531405 I 60 2300 MTJVM004900 1245 60Hz 2000rpm 13531504 60 2000 MTJVM004800 1219 MTJVM004600 1168 1800rpm 13531603 60 1800 MTJVM004800 1219 Note The motor pulleys marked with asterisks are applicable only to cotton thread Please order the motor pulleys for threads other than cotton thread 1 M Y 2 2 V ER TBR ALAC BDH PRAM V _ V mm 2300rpm 13531108 7 50 2300 MTJVM005000 1270 2000rpm 13531207 50 2000 MTJVM004900 1245 MTJVM004600 1168 1800rpm 13531306 50 1800 MTJVM004800 1219 2300rpm 13531405 60 2300 MTJVM004900 1245 2000rpm 13531504
39. 2 3 1 4 Before starting a machine which has been newly set up or has not been used for a long period of time apply a few drops of the lubricating oil to main shaft components through hole one drop to the racing surface of the shuttle race and infiltrate sufficient amount of the lubricating oil to the machine bed oil felt 4 MOREA SRS ES 0012 ERRE ON 1 IIA 5 FH AMOR Be sure to fix eye protecting cover with screw on machine frame before putting the machine into service WARNING The machine has to be installed by a serviceman x or maintenance personnel in accordance with 4 Ea the Instruction Manual Set up of the machine on has to be started after turning OFF the power to the machine 9 QR gt N
40. OK me r 2 NI lt A fa 1 BOKOSHULEIAL N 1 1
41. 0 5 2 When the machine is in the stop motion state the work clamp feet are STE PELE ARE in the up state adjust so that the clearance between disk floating arm and tension release arm is 0 zero mm lightly contact with 5 4 each other and tighten the setscrew of the disk floating arm ELARRE HEAP A ORA However the adjustment will vary to some extent according to the omm MME AE AAR models HHE TE Ao 24 ADJUSTING THE THREAD TRIMMER 1 2 9 0 0 5 Throat plate 0 5mm O 1 Remove starting lever tension spring and start the machine The work clamp foot stays down when the machine stops Loosen adjusting screw and adjust the position of moving knife
42. 1 Install bed mounting base to machine table using bolts flat washers and and nuts each 3 DCS 2 Fix point before raising the machine head Then fix two points 1 gt 3 2 ROR 2 WARNING 5 a TE Keep your hands away from bed locker after A3 A ae gt the machine head has been raised Do not place ses your hands or anything between the machine head and the bed GH RABE Ta BRU E A EN 6 ATTACHING THE IDLER PULLEY N 2T lt Re 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 asc
43. 28 18 WRAP ORAS eR 6 19 RARE THM 26 ADJUSTING THE LIFT OF THE WORK CLAMP FOOT Se 4 17mm 1 5 2 FOP PRA KARRIL 3 bora 4 5 18 A OY LAE 17mm 1 EDT 5 EUR O PRO 2 L
44. TALL AEA 2 1 EW REL TC FEU Thread the machine in the order as shown above Leave thread of approx 4cm on the needle Cautions 1 If the machine is equipped with a silicon oil lubricating unit pass the thread through thread guide of the silicon oil lubricating unit The silicon oil lubricating unit is optionally available For a thick thread pass the thread through only one of the two holes in needle bar thread guide N MERRER FAR ARSI A 4cm 1 GSM Re Oe ERS 2 FARES ARR MARE O 14 REMOVING AND INSTALLING THE BOBBIN CASE FA 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 PEAN OtHASET 2 3
45. T BERR hy HK 3 RR FS A SEAR 2 5 cm 17 THREAD TENSION _ 7 Dec 1 Increase rease Decrease 2 2 5cm 1 w Hold bobbin in hand so that it spins counterclockwise and set it in bobbin case Pass the thread throgh slot in the bobbin case Pull the thread to pass it under the tension spring out to thread exit At this time confirm that the bobbin spins in the arrowed direction when the thread is pulled Pass the thread through hole and allow the thread to trail about 2 5 cm from the hole N KLARA AR
46. 2 7 10mm W 9 9 7mm 10mm 4 W Stop motion cam z gt 1 Raise the machine head See 4
47. Beir 5 VERE Fe tN EE ae S32 TE TE PARE TERE CAUTIONS BEFORE OPERATIONS Belt cover Ki 1 2 KE CF 9 1 Donothold the belt cover when carrying the sewing machine 2 The sewing machine should run in 3 Rimove the rubber plug If the felt the arrowed direction Never allow placed inside has dried lubricate the 1 2 ARS the machine to run in the reverse machine referring to the description 8 direction given in 9 Lubrication 2 EA EBAY RB 7728 it BP H PRBS gt ORT 4
48. UMBRO AMM Lise 1 Remove the belt cover With the machine head set in its installing position OEE Fl Be EAL on the machine table raise the machine head in direction while pushing KRAUS GRR ABER down in direction bed locker E ATRE 2 Releasing the bed locker further raise the machine head in direction until it locks To lower the machine head push up the bed locker to release the lock 5 INSTALLING THE MACHINE HEAD 79899587 NS FA WARNING Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine Be sure to raise the machine head with both hands Move your hands off the machine head after ascertaining that the bed locker has been locked CRIES SPREE RAE BET an FASS HERA SH Eas REZ eB 1 Ay FR GOt 7 7 VOILA AT bOS3HCROHUET 2 2
49. 26 42 MPN W 26th stitch for 42 stitch large Par tack ns Boe At EEL 18th stitch for 28 stitch large bar tacking KALE DE 26 H 28 18 26 42 Bt j 18 28 6 19 Loosen nut and move feed across regulator in direction to shift lateral center of work clamp foot to the right or in direction to shift it to the left For 42 stitch bar tacking adjust the lateral center at the 26th stitch For 28 stitch bar tacking adjust the lateral center at the 18th stitch Caution To correct a slight deviation of the lateral feed center loosen the nut described in 19 Adjusting the length and width of bar tacking and push the work clamp foot to the right or left by hand to make adjustment SEARREO AO TABHRAROE RAPLE DAB AA SEMAD 42 St BS 26
50. 4 3 The needle often The needle is bent Replace the bent needle 10 breaks The needle hits the work clamp foot Correct the position of the work clamp 18 foot The feed timing is bad Correct the feed timing 14 The needle is too thin for the material Replace it with a thicker needle according 10 to the material 5 The driver excessively bends the needle Correctly position the needle and the 15 shuttle 4 Threads are not The counter knife is dull Replace the counter knife 17 trimmed The difference in level between the needle Increase the bend of the counter knife 17 hole guide and the counter knife is not enough Correct the position of the moving knife 17 The moving knife has been improperly positioned Correct the timing between the needle and 15 The last stitch is skipped the shuttle 5 Stitch skipping The motions of the needle and shuttle Correct the positions of the needle and 15 often occurs are not properly synchronized shuttle The clearance between the needle and Correct the positions of the needle and 15 shuttle is too large shuttle The needle is bent Replace the bent needle 10 The feed timing is bad Correct the feed timing 14 1 The driver excessively bends the needle Correctiy position the driver 15 6 The needle thread The needle thread tension is not high Increase the needle thread tension 12 comes out on the enough wrong side of the The tension release mechani
51. 03288 1 2 3 4 1 2 1 4
52. 4 4 EFECT 5 6 5 SES EE LE 6 8 8 9 8 10 9 11 once 10 12 10 13 11 14 ERAI 11 15 kkk 12 16 EAE ASF AFT IK occ kk 12 17 kk 12 18 kk 13 19 PEAT RSP AS AA ART 13 20 14 21 15 22 16 23 8 ee 17 24 N 17 25 18 26 18 27 19 28 ee 22 29 E 25 Ess A 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 as
53. 60 2000 MTJVM004800 1219 MTJVM004600 1168 1800rpm 13531603 60 1800 MTJVM004800 1219 REx 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 ORU AG 7 7 t 7 HOOFBL bORUOZ2ANI45 1 konto Installing the motor pulley Set motor pulley onto motor shaft so that one of two setscrews meets the flat part of the motor shaft Then tighten setscrews CRS ke RE RR REO 2 Op Ay MAA ERA ORR gt 6 1 v 2 v 9 9 9
54. RIN ALE 18 O 14 RANAH ORRENDE HA ES ASH 10 15 AREAS ER D O 17 ORE TN SHIEK 17 O 5 17 D gt 15 BEARS D OO 15 D 15 O o 10 O 14 8 OR BREE SD e 15 ERRETA O 5 12 O 16 RRR ERS BEES O Tah RGR 7788 12 D 17 25 HOW TO SUPPLY GREASE TO THE REDUCER SSE
55. Raising the machine head 1 PERTRA 2 4 2 Loosening hexagon nut and socket screw turn feed 7 10mm cam to perform adjustment so that the material feed is aoe completed at the moment the point of needle has SARRIOA lowered to a height of 7 to 10mm above the surface of throat Rio BRA TH ALL Fal GRAS Th LE EF o plate Turning the feed cam clockwise will delay the 3 completion of the material feed and vice versa SHE St ATES 7mm 3 securely tighten socket screw and Better thread tension is obtained as the above mentioned TR EAE PAE ERAIN E height is adjusted to about 7mm 3 vw If starting stitches formed are loose when using a Synthetic SURES AR FT 10mm fiber thread adjust the above mentioned height to about 4 BOOB SRE OO 10mm in order to prevent such trouble Me EERO SHORE BORO 4 Stop motion regulating cam is turned together with feed aa cam Therefore loosen setscrew and turn the stop ASE NS AR SRE ORO ER motion regulating
56. lt LK 1850 INSTRUCTION MANUAL Read safety instructions carefully and understand them before using Retain this Instruction Manual for future reference No 01 29313608
57. 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 Work clamp foot 9 Work clamp foot down F BEAR RR 1 Hid ZS ED Zhi ees 0 2 0 5mm 1 5 2 5mm 2 Loosening two setscrews perform adjustment so that a 0 2 to 0 5mm lateral clearance is provided between safety plate and lifting lever when the work clamp foot is up at the time of stop motion and a 1 5 to 2 5mm longitudinal clearance between them when the work clamp foot is down 0 2 0 5mm Fe 71 4 1 5 2 5mm ae PCR 2 19 2 2 2
58. provide a 2 to 3mm clearance between high speed belt and bobbin winder wheel 4 Loosen setscrew and move the motor to the right or left to make adjustment so that the high speed V belt comes evenly in contact with the bobbin winder wheel when the bobbin winder is used refer to I5 Winding a bobbin 5 Loosen setscrew and move motor base up or down by adjusting nut to perform adjustment so that the high speed V belt slacks about 10mm when you push the belt at middle 6 Loosen setscrew and move idler pulley in the arrowed direction to perform adjustment so that the low speed V belt slacks about 10mm when you push the belt at middle At this time set the idler pulley so that it is aligned with engraved marker dot on the installing plate _ 2 3mm Pa 0 1 V gt 2 V 3 2 3mm 4 15 J RA ERMO A V 5
59. screw of tension arm by L shaped wrench turn the tension arm to make adjustment so that a 4mm clearance is provided between the end of connecting rod and that of tension post support plate when the work clamp foot is up when connecting rod is retreated 3 After adjustment securely tighten socket screw LT OMA gt BML A RE ERE 4mm e 3 6 TNL OTE IER 16 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 23 S SA ADJUSTING THE DISK FLOATING TIMING For S type only 1
60. works have to be done by appropriately trained personnel 12 Repair and maintenance works of electrical components shall be conducted by qualified electric technicians or under the audit and guidance of specially skilled personnel Whenever you find a failure of any of electrical components immediately stop the machine 13 Before making repair and maintenance works on the machine equipped with pneumatic parts such as an air cylinder the air compressor has to be detached from the machine and the compressed air supply has to be cut off Existing residual air pressure after disconnecting the air compressor from the machine has to be expelled Exceptions to this are only adjustments and performance checks done by appropriately trained technicians or specially skilled personnel 14 Periodically clean the machine throughout the period of use Po 15 Grounding the machine is always necessary for the normal operation of the machine The machine has to be operated in an environment that is free from strong noise sources such as high frequency welder 16 An appropriate power plug has to be attached to the machine by electric technicians Power plug has to be connected to a grounded receptacle 17 The machine is only allowed to be used for the purpose intended Other used are not allowed 18 Remodel or modify the machine in accordance with the safety rules standards while taking all the effective safety measures JUKI assumes no resp
61. 10 12 nn 10 13 11 14 Lik 11 15 12 16 viccccccccccccccscsssssscscscsceveesssscecsvecsesssssstevavavavassesesescecaesesenatacacanacaeeeseeatars 12 17 PARED 12 EMEN EOE EN 13 19 13 CO EAO Ea EADE E 14 21 15 2 APD UIA SV FORA kk 16 23 SF 17 24 i 1 7 25 LL 18 26 18 27 nn 19 58 20 29 HELUCBIF SEAR cccccscscssecsesnsecscscsvecsvscsusasssevecseavscsevevasssaesesenenenaeaes 23 26 CONTENTS IMPORTANT SAFETY INSTRUCTIONS Ne 1 CAUTIONS BEFORE OPERATIONS RN 1 1 INSTALLING THE MOTOR 3 2 INSTALLING THE THREAD STAND ns 3 3 REMOVING THE BELT COVER nn 4 4 RAISING THE MACHINE HEAD nn 4 5 INSTALLING THE MACHINE HEAD pp 5 6 ATTACHING THE IDLER PULLEY nn 5 7 MOTOR PULLEYS AND BELTS Nt 6 8 A
62. Fel SARTRE RR te iT 1 INSTALLING THE MOTOR Hs 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 7 7 SRAKL EO 9 9 2 9 1 Attach motor base to table using bolt vibration proof rubber pad washer spring washer andnut 2 Using bolt washer spring washer and nut install motor to motor base LA BREEZE R2O HEBO TREO RES KPRIOLREROLEERAOL FSH O O AARS INSTALLING THE THREAD STAND
63. SSE 21 28 28 42 KGH 42 28 21 28 42 mm 1 5 3 lt 0 lt lt lt 2 PA ih ob Fe amp mm 8 16 6 5 14 14 6 5 14 14 13 25 25 18 35 25 DPx5 14 16 lt lt lt lt mm 17 lt lt lt lt lt gt No 2 lt 2 F LK 1854 6 LK 1852 3 LK 1854 4 LK 1852 1 LK 1854 11 LK 1852 2 4 lt REED lt lt rpm 1800 lt lt lt 21 28 21 28 21 28 AN KGH 21 28 21 28 21 28 IEE gt 1 3 3 2 5 1 5 3 2 5 lt lt mm 4 8 6 5 4 8 6 4 8 8 lt DPx 5 11 lt 5 14 16 lt lt HZ EF mm 17 lt lt lt lt lt yi 7 lt lt lt lt No 2 LK 1850S LK 1852 20 LK 1852S 3 lt rpm 1800 L PIS RX 42 St 42 28 1 mm 1 5 3
64. TTACHING THE CHAIN i 8 9 LUBRICATION nn 8 10 OPERATING THE SEWING MACHINE i 9 11 MATERIALS AND NEEDLES BE USED RN 10 12 ATTACHING THE NEEDLE 10 13 THREADING THE MACHINE 0 11 14 REMOVING AND INSTALLING THE BOBBIN CASE 11 15 WINDING A BOBBIN ieee 12 16 THREADING THE BOBBIN CASE RN 12 17 THREAD TENSION ee 12 18 ADJUSTING THE THREAD TAKE UP SPRING 13 19 ADJUSTING THE LENGTH AND WIDTH OF 13 20 ADJUSTING THE FEED TIMING ee 14 21 NEEDLE TO SHUTTLE RELATION Ne 15 22 ADJUSTING THE THREAD TENSION RELEASE TIMING 16 23 ADJUSTING THE DISK FLOATING TIMING For S type 17 24 ADJUSTING THE THREAD TRIMMER Nt 17 25 ADJUSTING THE LATERAL POSITION OF THE WORK CLAMP FOOT 18 26 ADJUSTING THE LIFT OF THE WORK CLAMP 18 27 ADJUSTING THE SAFETY PLATE Ne 19 28 SPECIFICATIONS ii 21 29 TROUBLES AND CORRECTIVE MEASURES 24 30 HOW TO SUPPLY GREASE TO THE 26 1 OEN SE 1 1 0 3 2 3 3 4
65. cam to make adjustment so that stop A gt BEN motion regulating cam roller enters stop motion from the low speed revolution when stop motion hook falls 14 onto stop motion cam screw No at the final stitch 21 NEEDLE TO SHUTTLE RELATION 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 4 2 4
66. certaining that the motor is at rest Do not place your fingers near the work clamp foot while the machine is in operation RE EES Po Belt cover Make sure to turn off the power switch before removing the belt cover Be ERAR EIR L V 119 37207 7 0 BABON LET LERCH 3 Never bring your fingers or hair close to or place anything If your machine is provided with a belt cover finger guard on the handwheel V belt bobbin winder wheel or motor and eye guard never operate your machine with any of them during operation It may lead to serious personal injuries removed ie TBS FAB DARE AAR SER RARE gt SEE RES
67. ear or if it chatters 1 Stop the machine and remove screw 2 Uncap grease tube supplied with the machine screw the tube into hole and push the grease out of the tube 3 Removing grease tube from push in the grease by screw 4 Repeat the step of injecting the grease and pushing it in by the AES BARE LD Re gt BE TRH ES HYVES NS RE 1 EF RA Oe 2 HF FO A BS A OT 3 PETERS AR ERS gt TEER 2 AC 5 RIA ARROLTR2 3 2B screw twice or so 5 Tighten screw Caution If the grease will not get into the unit smoothly screw in grease tube turn on the motor switch and move the presser foot up and down two or three times using lever By doing this you can make the grease get into the unit easily 26
68. ed Trouble Cause Corrective measures Page 1 The needle thread Q Stitches are skipped at the start Adjust the clearance between the needle 15 slips off the needle and the shuttle to 0 05 to 0 1mm at the start of bar The needle thread remaining on the Correct the thread tension release timing 16 tacking needle after thread trimming is too short of the thread tension controller No 2 Increase the tension of the thread take up 12 13 spring or decrease the tension of the thread tension controller No 1 3 The bobbin thread is too short Decrease the tension of the bobbin thread 12 Increase the clearance between the needle 17 hole guide and the counter knife The feed timing is bad Correct the feed timing 14 2 Thread often The shuttle or the driver has scratches Take it out and remove the scratches using breaks or synthetic a fine whetstone or buff fiber thread splits The needle hole guide has scratches Buff or replace it finely 3 The needle strikes the work clamp foot Correct the position of the work clamp 18 foot Fibrous dust is in the groove of the Take out the shuttle and remove the 15 shuttle race fibrous dust from the shuttle race 5 The needle thread tension is too high Reduce the needle thread tension 12 The tension of the thread take up spring Reduce the tension 13 is too high The synthetic fiber thread melts due to Use silicone oil 8 heat generated on the needle
69. ed from a cold place to a warm place dew condensation may be observed fn this case turn the power to the machine after you have confirmed that there is no danger of water drops in the machine CAUTION The safety devices eye guard cover finger guard etc may be omitted in the figures of this manual for easy explanation Never use the machine with these safety devices removed viii LK 1850 1 2 3 4 5 6 7
70. edle bar Tighten setscrew Positioning the shuttle 4 Further turn the driving pulley until lower marker line engraved on needle bar meets the bottom end of lower bushing of the needle bar 5 Loosen shuttle driver setscrew and open shuttle race latches to the right and left respectively while pulling them towards you to remove shuttle race ring Caution At this time be careful not to allow shuttle to fall 6 Perform adjustment so that no clearance is provided between the needle and the front end of shuttle driver when the blade point of shuttle is aligned with center of needle Then tighten shuttle driver setscrew Caution At this time be very careful not to cause the shuttle race to slip in the direction of rotation 7 Loosening setscrew turn shuttle race adjusting shaft clockwise or counterclockwise for adjustment to provide a 0 05 to 0 1 clearance between needle and shuttle then tighten setscrew 8 After adjustment install shuttle race ring 15 REHAR PROZENT BRAN KA FRM MMR gt 3 SES TRON Fit PRS REM By SHH OT ale MESH FROWN Fi 5 EERE BRATKO HL PRREM SO gt KR FERTER PRE ORE EPROM RA RH ON Fl ARS RE Omm gt REG Bl ER
71. ee ag cpa come 7 mm 8 16 6 5 14 14 DPx5 14 16 lt DPx5 11 mm 17 13547005 2 2 13547112 28 SPECIFICATIONS Standard Subclass Model LK 1850 LK 1852 5 LK 1854 10 LK 1852 20 LK 1852 30 LK 1854 40 1 Large size Attachin 1 1 1 Application bar tacking lt band loops i lt lt Sewing speed rpm 1800 lt lt lt lt lt 42 28 EARRA _ Suitching pattem MMM AA 2 SP ee 21 28 28 42 Number of stitches 42 28 21 28 lt 42 Bar tacking width 1 5 3 lt 0 lt lt 4 tacking length 8 16 6 5 14 6 5 14 13 25 2 18 35 standard 14 standard 14 standard 25 standard 25 Needle DPx5 14 16 lt Work clamp foot Max 17 lt lt lt lt lt lift mm Juki New Defri Lubricating oil No 2 lt lt lt lt lt Subclass Model LK 1854 6 LK 1852 3 LK 18544 LK 1852 1 LK 1854 11 LK 1852 2 ee Knit goods 3 Buttonhole Small size Application bar tack
72. ertaining that the motor is at rest TARE FT V OERSO ROA THOS LORUO GER V Fix idler pulley to mounting plate by setscrew Caution Adjust the clearance at to just allow the V belt to pass it through V 7 MOTOR PULLEYS AND BELTS BERRAK 1 M V 2 2 V 3 V mm V mm 2300 13531108 4 50 2300 MTJVM005000 1270 30Hz 2000rpm 13531207 30 2000 MTJVM004900 1245 MTJVM004600 1168 _ 1800rpm 13531306 50 1800 MTJVM004800 1219 2300rpm X 13531405 60 2300 MTJVM004900 1245 60Hz 2000rpm 13531504 60 2000 MTJVM004800 1219 MTJVM004600 1168 13531603 60 1800 04800 1219
73. ght material 16 DPxS B2426280000 standard Men s suits Ladies wear Heavy weight material 18 DPx5 B2426280000 standard Working wear overcoats 11 DP x 5 D2426282C00 14 DPx5 B2426280000 16 DPx5 B2426280000 18 DPx5 2426280000 12 ATTACHING THE NEEDLE _ 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 PRH OHNE AA MAT ERREKETA AER ER Oe 1 2
74. in the arrowed direction to align hole of the moving knife with the needle hole in needle hole guide 3 Loosen setscrew and adjust the position of counter knife to provide a 0 5mm clearance between needle hole guide and counter knife Ne gt 2 0 5mm lt 17 cae lt lt eu WARNING A 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 Y r N 25 ADJUSTING THE LATERAL POSITION OF THE WORK CLAMP FOOT ROOM OMB OIL 6
75. ing lt bar tacking lt bar tacking lt Sewing speed rpm 1800 T 21 28 2 28 21 28 i 1 Number of stitches 21 28 21 28 21 28 Bar tacking width 1 3 3 lt 1 5 3 lt lt lt standard 2 5 standard 2 5 T Bar tacking length 4 8 4 8 4 8 mm standard 6 5 lt standard 6 lt standard 8 lt Needle DPx5 11 lt DPxS 14 16 lt Work clamp foot lift mm lt Lubricating oil oS Defrix lt lt lt Edge of table The machine head of the band loop attaching machine is Starting pedal shaft Viewed from the bottom of the table Starting pedal lever 4 iy J 74mm installed sideways See the figure at left and use the pedal shaft supplied with the machine for easier pedal operation 2_ For bar tacking of 25 to 35mm length use feed plate part No 13547005 and work clamp foot part No 13547112 3_ This model of bar tacking machine is designed to make the work clamp feet automatically close from the right and left of an eyelet buttonhole closing width adjustable from 0 to 4mm thus preventing the button hole from opening when bar tacking the end of the eyelet buttonhole By replacing the pedal pressure decreasing unit asm part No 13523188 with the P type pedal pressure decreasing unit asm part No 13545959 the work clamp foot lifting operation can be changed from the standard one pedal system
76. itch In this case depress the pedal gain sufficiently If the machine will not start even when you cepress it strong enough turn of the power switch and remove the belt oover Then turn changeover pulley Knurled part in the arrowed direction of low speed pulley This sewing machine may run rather unsmoothly on a cold morning because it uses grease for the lubrication of several parts In such a case allow the machine to idle for 5 or 6 times before starting the work the sewing machine manually WARNING Carry out the following steps of procedure after the power switch has been turned OFF Turn off the power switch remove the upper end of spring give low speed pulley two turns in the arrowed direction and the work clamp foot will come down Then depress the starting pedal and the machine can be run manually ae da PS EM ERE 1 2 SHES EA TE FRR SRE LARS gt SCRIBED RIEL LF 3 REAR BRAG REY o BE AU BEE Bah 4 PTE 5 8089 b gt ER LR RIL BE 1 2 1 3
77. onsibility for damage caused by remodeling or modification of the machine 19 Warning hints are marked with the two shown symbols AN Danger of injury to operator or service staff Items requiring special attention 1 2 3 CRE SE BAY Aa BE BE EL RARRREN RB NBER ES IEE 5 BREE 768 gt 7 7 1 7 2 7 3 7 4 7 5 ARS BER gt 8
78. rtained that it conforms with safety rules standards valid in your country 4 All safety devices must be in position when the machine is ready for work or in operation The operation without the specified safety devices is not allowed This machine shall be operated by appropriately trained operators For your personal protection we recommend that you wear safety glasses 7 For the following turn off the power switch or disconnect the power plug of the machine from the receptacle 7 1 For threading needie s looper spreader etc and replacing bobbin 7 2 For replacing part s of needle presser foot throat plate looper spreader feed dog needle guard folder cloth guide etc 7 3 For repair work 7 4 When leaving the working place or when the working place is unattended 7 5 When using clutch motors without applying brake it has to be waited until the motor stopped totally 8 If you shouid allow oil grease etc use with the machine and devices to come in contact with your eyes or skin or swallow any of such liquid by mistake immediately wash the contacted areas and consult a medical doctor 9 Tampering with the live parts and devices regardless of whether the machine is powered is prohibited 10 Repair remodeling and adjustment works must only be done by appropriately trained technicians or specially skilled personnei Only spare parts designated by JUKI can be used for repairs 11 General maintenance and inspection
79. sm fails to Check whether or not the tension disc 16 material work properly No 2 is released during bar tacking The needle thread after thread trimming Increase the tension of the thread tension 12 is too long controller No 1 7 Threads break at jo The moving knife has been improperly Correct the position of the moving knife 24 1 D OO 0 05 0 1mm 15 D 16 12 13 RRE 12 7 gt 14 D he BHAAGE CAR o Et hii th RAMA 18 Ow FF REE gt 15 O lt 12 PARR SE a O YRSS PEAR TE 7 13 2 8 D 8 10 Mer Sila Oma Sn
80. th Push and open bed cover in the arrowed direction and loosen nut Move feed regulator to the left to increase the bartacking width or to the right to decrease it After adjust ment tighten nut and close bed cover A REHAREO Bo RRRS MARAE HEB TROD MME 20 ADJUSTING THE FEED TIMING N XE 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 N 0 10mm 10mm Advance l N 1 2 4 LA
81. to two pedal system 21 28 LK 1850 LK 1852 5 LK 1854 10 LK 1852 20 LK 1852 30 LK 1854 40 43 1 1 1 1 A DLE lt lt 1800 lt lt lt 42 28 lt meet eH MERCER A AKAN S SSS SS SSS 21 28 28 42 42 28 21 28 lt 42 4 4 MERRE 1 5 3 lt 0 lt lt 2 8 16 aa 6 5 14 14 13 25 26 18 35 25 DP x5 14 16 lt lt lt 17mm 1 No2 JUKI _ _ _ lt nares LK 1854 6 LK 1852 3 LK 1854 4 LK 1852 1 LK 1854 11 LK 1852 2 4 1 FAR 223 ANE lt a 20 2 1800 lt f T 21 28 2 28 21 28 AM kejt H 21 28 21 28 21 28 1 3 3 2 5 lt 11 53 2 5 lt lt lt MEERE 4 8 6 5 4 8 6 4 8 8 DPx 5 11 lt DP 5 214 16 lt lt lt FS 17mm lt No 2 J UK I _ 2
82. ver and eye protecting cover removed To avoid possible personal injury due to involvement keep your fingers head and clothes away from the handwheel V belt and motor while the machine is in operation In addition place nothing near the aforementioned parts To avoid possible personal injury never place your fingers near the needle when turning the power on or while the machine is in operation To avoid possible personal injury never place your fingers inside the thread take up cover while the machine is in operation The hook rotates at a high speed while the machine is in operation To avoid possible injury to hands keep your hands away from the hook while the machine is in operation In addition be sure to turn the power off when replacing a bobbin To avoid possible personal injury exercise care not to allow your fingers to get caught in the machine when tilting the machine or returning it to the home position To avoid possible accidents due to abrupt start of the machine turn the power off when tilting the machine head and removing the belt cover and the V belt To prevent possible accidents because of electric shock do not operate the machine with the power earth removed Be sure to turn off the power switch in prior to the connection disconnection of the power plug In time of thunder and lightning stop your work and disconnect the power plug for safety s sake If the machine is suddenly mov
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