MO-114D/104D
Contents
1. o Remove the rear cover 2 4 Cloth plate o Remove the setscrews 2 locations o Remove the cloth plate 3 Installation of throat plate Checking items Throat plate Setscrew Feed dog Center of needle entry Check that all needles are laterally equidistant with respect to the nee dle slot in the throat plate Check that the distance between the needle center and the front edge of the needle slot in the throat plate is 1 4 mm How to perform adjustment o Loosen the setscrew Carry out the adjustment by moving the throat plate as described below a The feed dog teeth are parallel to the slots in the throat plate b The needles are spaced equidistantly with respect to the needle slot in the throat plate c The distance between the needle center and the front edge of the needle slot in the throat plate is 1 4 mm o Tighten the setscrews 4 Height of needle bar Checking items Needle Throat plate Check that the distance between the top surface of throat plate and the needle point with the needle bar at the highest point of its stroke is 10 1 0 15 mm Q How to perform adjustment o Loosen the setscrew of the needle bar connection slightly The needle bar should not slip down o Turn the handwheel to allow the needle bar to reach the highest point of its stroke o Move needle bar up and down by hand to adjust dimensio2. and release the engagement of the thread tension drive gear with the intermediate gear o In this state return the knob to the standard scale mark on 4 o When you stop pushing the small screwdriver the thread tension drive gear engages with the intermediate gear in the original state Caution After you stop pushing the small screwdriver check that they engage with each other properly by moving the thread tension knob up and down just slightly Ge 21 Position of needle thread take up Checking items To adjust the needle thread loop adjust the vertical position of the needle thread take up guide so that a stitch skipping may not occur at the time of double fabric sewing Thread to be used Saba C 120 e Fabric to be used Denim 100z 2 6 2 e Loop amount 1 5to2mm How to perform adjustment Mount the needle thread take up guide with reference to the follow ing position and adjust the clearance between the needle thread take up and the thread in accordance with the illustrations shown below o During movement of the needle thread take up it shall not interfere with the front cover and the needle thread take up guide o To adjust the needle thread take up guide loosen the setscrew of the needle thread take up guide and move it up and down o The needle thread take up guide shall be mounted at the position where a washer for the setscrew part of the needle thr
3. is 0 5 to 1 0 mm Check the engagement of the upper knife with the lower knife when the upper knife is in the lowest position e Vertical engagement 1 to 1 5 mm e Longitudinal engagement The rear end face of upper knife is aligned with the tip of lower knife The rear end face of upper knife is aligned with the tip of lower knife How to perform adjustment e Adjusting the vertical engagement o Set the upper knife in its lowest position o Fix the upper knife holder using a spanner 11 mm loosen the setscrew of the upper knife o Move the upper knife up or down to perform adjustment o Tighten the setscrew e Adjusting the longitudinal engagement o Set the upper knife in its lowest position o Loosen the setscrews of the upper knife turning knob o Turn the upper knife to align the rear end face of upper knife and the tip of lower knife o Tighten the setscrews 19 25 Position of cloth plate Checking items Throat plate Cloth plate Rear cover Check that the clearance between the cloth plate and the throat plate is 0 to 0 3 mm Check that the clearance between the cloth plate and the rear cover is 0 5 to 1 5 mm How to perform adjustment o Loosen the setscrews of the cloth plate hinge o Move the cloth plate with the hinge in its correct posi tion o Tighten the setscrews 26 Adjusting presser foot p
4. of the eccentric stud o Turn the eccentric stud to perform adjustment o Tighten the setscrew 8 Height of feed dog Checking items Front end of feed dog Adjust the stitch length to 2 5 mm Bring the feed dog to its highest position At this time check that the height of front end of feed dog with respect to the top surface of the throat plate is 1 3 0 1 mm How to perform adjustment o Set the feed dog in its highest position o Loosen the setscrew of the eccentric stud o Turn the eccentric stud to perform adjustment o Tighten the setscrew 9 Feed dog timing Checking items Needle Throat plate Feed dog Adjust the stitch length to 2 5 mm When the feed dog and the needle go up check that the tip of needle and the teeth tip of feed dog are simultaneously aligned with the top surface of throat plate The position of the needle shall be 0 2 mm from the top surface of throat plate How to perform adjustment o Loosen the setscrews of the feed eccentric cam o Turn the feed eccentric cam to perform adjustment o Tighten the setscrews 10 Position of balance weights and cams Feed cam Lower looper and upper knife combined cam Upper looper cam Needle bar driving cam Main shaft 1st setscrew 1st setscrew e ma Eme 11 Projecting amount of upper looper Checking items Upper lo
5. sub feed dog o Adjust the position of the sub feed dog so that at the most advanced position in max main feed and min sub feed the clearance between the main feed dog and the sub feed dog is 1 33 mm o Tighten the setscrews o Check that the main feed dog and the sub feed dog are attached in parallel 6 Adjusting stroke of main feed dog Checking items Feed dog Throat plate Adjust the stitch length to 1 mm Turn the handwheel to move the feed dog up and down Check that the moving amount of feed dog is 1 2 0 2 mm when the teeth tip of the feed dog is aligned with the top surface of throat plate during its upward downward movement How to perform adjustment o Loosen the setscrews of the horizontal feed regulator o Turn the horizontal feed regulator so that the moving amount of main feed dog is 1 2 0 2 mm Q o Tighten the setscrews 7 Adjusting stroke of sub feed dog MO 114D Checking items Main feed dog Sub feed dog Throat plate Adjust the stitch length to 4 mm Set the differential feed ratio at N Turn the handwheel to move the feed dog up and down Check that the difference of clearance between the main feed dog and the sub feed dog is 0 0 1 mm when the teeth tip of feed dog teeth is aligned with the top surface of throat plate during its upward down ward movement How to perform adjustment o Loosen the setscrew
6. 7 Position of upper looper thread take up Checking items Upper looper thread take up Setscrew Looper cover hinge Check that the distance between the lower end of upper looper thread take up and the top surface of looper cover hinge is the dimension described below when the upper looper is at the lowest position of the stroke imenso MO 104D 7 5 0 5 mm How to perform adjustment Q o Set the upper looper in its lowest position of the stroke o Loosen the setscrew o Adjust the position of upper looper thread take up o Tighten the setscrew 13 18 Height and lateral position of presser foot Checking items Throat plate Presser foot Raise the presser foot using the lifting lever and check that the dis tance between the top surface of throat plate and the presser foot sole is 5 0 0 2 mm Check that the presser foot is parallel to the feed dog slot in the throat plate How to perform adjustment o Raise the presser foot by lifting the lever Measure the height of presser foot in the state that the presser foot o Loosen the setscrew of the presser bar guide bracket sole is parallel to the throat plate o Move the presser bar up or down and turn it to perform adjust ment o Tighten the setscrew 14 19 Adjusting floating amount of thread tension disk Checking items Tension release actuating bracket Setscrew Lif
7. atLai lt i 2 Needle 4 Thread Overlock Sewing Machine MO 114D 104D SERVICE MANUAL XN a eee SSL i N sa NEY rata m O MO 114D AAD Se MO 104D CONTENTS A opec ALOU S ra 1 2 REMOVING order Of COVESS ccscccceeseeeeeeeeeeeeeeeeeaneeeeeseeesaaeesaaneeeeaeeeseeeeseneness 2 Zac FrONt COVO ana a a a a 2 232 BASE Plate koaa stots aes a a a a E aa A 2 223 Real COVEN sasra a a a E 3 GIO pilale a aa aa tea acc eee ee EE aa a A a a aaa Ae Aa AEEA 3 3 Installation of throat plate 0 0 0 0 cecceceeeeeeeeeeeeeeeeeeeeseeeeeseeesseneeseneeneneeaens 4 A Height of needle Dale a eee ee eee 4 5 Position OF feed ClO Ose crite alee ea es a te ee lo ees besos 5 6 Adjusting stroke of Main feed dog ccccesecceeeseeeeeeeeeeeeeeeseaneeseaneensseessaees 6 7 Adjusting stroke of sub feed dog MO 114D cccccsseseeseeeeeeeeeeeeeeeeeeeees 7 S Height of feed GOG rsinsa ienne cect ere oes eee acca ceeded ee eect a 8 9 Feed dog TIMING isa a aa Ea aana aaeeea 8 10 Position of balance weights and CaIMs cccccceessseeeeeeeeeeeeeeeeeeneeseeeeeseanees 9 11 Projecting amount of upper lOOPel cccecceeeceeseeeceeeeceeeeeeeeeseeeeseneeeeneseanes 9 12 Radius OF l wer IO ODEN aisinn ciris kuiona anina cei aaidaki ia aeaiiai 10 13 Adjusting lower looper thread guide level ccccssccseseeeseeeeeeseeeeseeneees 10 TA Adlusting loop NM oseon asses
8. chine parts 1 Specifications No Items Description 1 Number of needle and threads 2 needle and 4 thread with differential feed 2 Needle 130 705H No 70 80 10 12 3 Overedge width 2 needle 4 thread 6 mm 1 needle 3 thread 4 mm Roll hemming 2 mm Stitch length Differential feed ratio 1 0 to 4 0 mm standard 2 5 mm 1 0 5 to 0 7 standard 1 2 0 3 Needle bar stroke 27 mm 7 Feed dog height 1 3 mm standard 8 Presser foot height 5 mm standard 7 mm two step presser foot 9 Power consumption 105 W Motor built in Input 90 W Output 42 W 120 V Input 90 W Output 44 W 240 V Light 15 W screw type 120 V 10 W screw type 240 V Power switch Sewing speed 2 step rocker switch Max 1 500 sti min SPM 14 Driving system Machine weight Timing belt Machine rotates in the forward normal direction 15 Machine size 315 W x 290 D x 290 H 16 7 0 kg 17 Foot control Electronic type 2 Removing order of covers 2 1 Front cover o Remove the setscrews 3 locations o Remove the setscrews 2 locations o Remove the front cover 2 2 Base plate o Remove the setscrews 4 locations o Remove the base plate 2 3 Rear cover o Remove the setscrews 2 locations o Remove the presser foot adjusting screw o Raise the presser foot lifting lever o Open the cloth plate
9. ead take up guide is aligned with the lower end of the slit eyelet of the needle thread take up guide To be aligned 22 Belt tension Checking items Belt Motor Nuts Sewing speed 1 500 sti min The belt should slacken approx 3 to 4 mm under a 1 96 N 200 g load How to perform adjustment o Loosen the nuts of the motor o Move the motor to perform adjustment o Tighten the nuts 23 Position of lower knife Checking items Throat plate Lower knife presser plate Setscrew Lower knife support plate Setscrew Lower knife Check that the distance between the top surface of throat plate and the lower knife is 0 to 0 3 mm How to perform adjustment o Loosen the setscrew of the lower knife presser plate and the setscrew of the lower knife support plate o Move the lower knife up or down to perform adjustment o Turn the lower knife support plate to be brought into close contact with the lower end of lower knife Then tighten the setscrew o Tighten the setscrew 18 24 Engagement of upper knife with lower knife Checking items Upper knife Upper knife rocking arm Upper knife turning knob When the lower knife is contact with the upper knife at the leftmost position of the lower knife check that the clearance between the upper knife turning knob and the upper knife rocking arm
10. n is obtained o Tighten the setscrew Check the position of needle entry of the left needle and right needle to the throat plate Check the clearance between the needle and the looper and the clear ance between the needle and the needle guard The right needle is at the center position of the needle bar but the left needle is offset on the left side from the center of the needle bar The position of the left needle moves back and forth by turning the needle bar 5 Position of feed dog Checking items Main feed dog Sub feed dog Clearances are equal Throat plate Check that the feed dogs and and the slot in the throat plate are parallel with each other The clearances of the right and left side between the feed dogs and and the slot in the throat plate are equal Check that the throat plate does not come in contact with the main feed dog at the most receded position when the stitch length is 4 mm Check at the most advanced position in max main feed and min sub feed the clearance between the main feed dog and the sub feed dog is 1 55 mm How to perform adjustment o Loosen the setscrews of the main feed dog o Adjust the position of the main feed dog so that the throat plate does not come in contact with the main feed dog at the most receded position when the stitch length is 4 mm o Tighten the setscrews o Loosen the setscrews of the
11. oper Needle Check that distance projecting amount from the center of nee dle to the blade point of upper looper is 4 0 0 2 m m when the upper looper is in its leftmost position How to perform adjustment o Set the upper looper in its leftmost position o Loosen the setscrew of the upper looper arm o Move the upper looper siding shaft to perform adjustment o Tighten the setscrew of the upper looper arm 12 Radius of lower looper Checking items Setscrew of lower looper Lower looper shaft Lower looper Check that the distance from the center of lower looper shaft to the blade point of lower looper is 66 0 0 15 mm How to perform adjustment o Loosen the setscrew of the lower looper o Move the lower looper up or down to perform adjustment o Tighten the setscrews 13 Adjusting lower looper thread guide lever Checking items To align end faces with each other Lower looper thread guide Lower looper Groove of lower looper thread guide lever Check that the top surface of lower looper is aligned with the top surface of the lower looper thread guide when the lower looper thread guide lever is in its highest position Check that the lower looper thread guide lever is lowered by hand when the lower looper is in its right most end of its stroke and the low er looper thread guide lever automatically returns to its home position by tu
12. ressure Checking items Presser foot adjusting screw Check that the distance between the lower end of knurled portion of presser foot adjusting screw and the top sur face of rear cover is 0 5 mm How to perform adjustment o Turn the presser foot adjusting screw to perform adjust ment 90 Rear cover ati JUKI CORPORATION HOUSEHOLD SEWING MACHINERY BUSINESS UNIT 2 11 1 TSURUMAKI TAMA SHI TOKYO 206 8551 JAPAN PHONE 81 42 357 2341 FAX 81 42 357 2380 http www juki com Copyright 2015 JUKI CORPORATION All rights reserved throughout the world 40167630 2015 09
13. rning the handwheel before the blade point of lower looper cross es the center of needle How to perform adjustment o Loosen the setscrews o Move the lower looper thread guide arm up or down to perform adjust ment o Tighten the setscrews o Loosen the setscrew of the lower looper thread guide lever plate o Move the plate up or down to perform adjustment o Tighten the setscrew 40 14 Adjusting loop lift Checking items Needle Blade point of lower looper Lower looper Gauge needle Cut the top end of needle for use L 32 3 mm Check that the clearance between the needle and the blade point of lower looper is 0 01 to 0 1 mm Turn the handwheel and check that the blade point of lower loop er meets with the left side of gauge needle when the lower looper goes and back The difference between the vertical positions when the lower looper goes and back shall be 0 2 mm or less How to perform adjustment o Loosen the setscrews of the lower looper support arm o Move the lower looper support arm back or forth to adjust the clearance between the needle and the blade point of lower looper o Tighten the setscrews o Adjusting the lower looper cam timing e Loosen the setscrews of the lower looper cam e Check the position of the blade point of lower looper and the gauge needle while turning the lower looper cam Change the posi
14. s see eee 11 15 Timing between upper and lower lOOpeL cccceeseceeeeeseeeeeeeeeeseneseeeees 12 16 Installation of Needle QUaIS cccccceeseeeeeeeeeeeeeeeeeeeeeseeeeeseaneeeeaneeseeneesenes 13 17 Position of upper looper thread take up ccccceseeeeseeeeeeeeeeeeseeeeseeeeees 13 18 Height and lateral position of presser foot ccccceeeeeeeeeeeeeeeeeeeeeeeeeees 14 19 Adjusting floating amount of thread tension diSK ccccceeeeeeeeeeeeeees 15 20 Thread tension controller cccccecceeceeeeceeeeeeeeeeeeceeeeaeeseeseaeseeseeeseeneeanees 16 21 Position of needle thread take Up ccccscecssseeeeseeeeeeeseneeeeseeeeeeseeneseaaes 17 ZZ Belt CONISTON ices cae oes aoa ees eee es cao evel 18 23 POSITION OF lower KNIE ssc cisends te cdancnsi cocidesdancespnceiancessncets ipaa aai 18 24 Engagement of upper knife with lower knife cccssseeeseeeeeeeeeeneeeeees 19 25 Position of cloth plate sic ciessaniwsaiestancetnipaneceeieteevivecadiacvexecapanecerveasiataceresnansaes 20 26 Adjusting presser foot pressure sssssssssssssssnnsnrnnnnnnnnrnnnnnnnnnnnnnnnnnnnnnnnnnn nnne 20 d N CAUTION Be sure to observe the following to protect against a fire electrical shock injury or damaged components Be sure to unplug the machine before disassembly assembly or adjustment of the machine Be sure to use the proper genuine parts when changing any of the ma
15. t the presser foot Set the thread tension adjustment knob at 4 At this time check that a floating amount clearance be tween two disks of the upper and lower looper thread tension disks at the top end of thread tension shaft is 0 9 93 mm How to perform adjustment o Loosen the setscrew o Move the tension release actuating bracket left or right to perform adjustment o Tighten the setscrew a5 20 Thread tension controller Checking items Using Saba C 120 check that the thread tensions are the nu meric values shown below Scale mark on the knob 4 Turn up the knob to the scale mark on 9 and then return to the scale mark on 4 to check the thread tensions e Left hand needle thread 0 29 0 05 N 30 5g e Right hand needle thread 0 14 0 03 N 14 3 9g e Upper looper thread 0 12 0 02 N 12 2 g e Lower looper thread 0 24 0 03 N 24 3 g How to perform adjustment 4 j Q For example when you want to strengthen a standard thread tension o When you want to strengthen the thread tension by the amount of move the knob to its position o Insert the small screwdriver into the thread tension controller from the thread path slot slit of the front cover and put it on the shelf inside the front cover o Push the flange part of the thread tension pulley in the direction of the arrow using the tip of the small screwdriver
16. tion of the cam little by little so that the left side of gauge needle can meet with the blade point of lower looper on both ways of going and back e Tighten the setscrews 11 15 Timing between upper and lower looper Checking items Lower looper Upper looper Check that the clearance between the projecting part of lower looper and the blade point of upper looper is 0 5 0 2 mm when the upper looper goes up and the blade point of upper looper meets the top end of lower looper Check that the front to back clearance between the blade point of upper looper and the lower looper is 0 1 to 0 3 mm How to perform adjustment o Loosen the setscrews of the upper looper cam o Rotate the upper looper cam to perform adjustment o Tighten the setscrews o Loosen the setscrew of the upper looper o Move the upper looper front or back to perform adjustment o Tighten the setscrew A 16 Installation of needle guards Checking items Needle guard Needle Check that the clearance between the needle and the front needle guard is 0 to 0 1 mm when the needle bar is at the lowest position of the stroke How to perform adjustment o Set the needle bar in its lowest position of the stroke o Loosen the setscrews of the front needle guard o Move the front needle guard to perform adjustment o Tighten the setscrews 1
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MO 114D/104D