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SERVICE MANUAL

MO-114D/104D

2-Needle, 4-Thread Overlock Sewing Machine

MO-114D

MO-104D

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Summary of Contents for MO-104D

Page 1: ...SERVICE MANUAL MO 114D 104D 2 Needle 4 Thread Overlock Sewing Machine MO 114D MO 104D...

Page 2: ...ting stroke of sub feed dog MO 114D 7 8 Height of feed dog 8 9 Feed dog timing 8 10 Position of balance weights and cams 9 11 Projecting amount of upper looper 9 12 Radius of lower looper 10 13 Adjust...

Page 3: ...2 0 3 6 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 10 Motor built in Input 90 W Output 42 W 120...

Page 4: ...g order of covers 3 B 2 1 A 2 1 Front cover Remove the setscrews 1 3 locations Remove the setscrews 2 2 locations Remove the front cover A 2 2 Base plate Remove the setscrews 3 4 locations Remove the...

Page 5: ...rews 4 2 locations Remove the presser foot adjusting screw 5 Raise the presser foot lifting lever 6 Open the cloth plate D Remove the rear cover C 7 D D MO 114D MO 104D 2 4 Cloth plate Remove the sets...

Page 6: ...he setscrews 2 Checking items 1 Needle 2 Throat plate Check that the distance between the top surface of throat plate 2 and the needle 1 point with the needle bar at the highest point of its stroke is...

Page 7: ...between the main feed dog 1 and the sub feed dog 2 is 1 0 4 0 5 mm C How to perform adjustment Loosen the setscrews D of the main feed dog 1 Adjust the position of the main feed dog 1 so that the thr...

Page 8: ...moving amount of feed dog 1 is 1 2 0 2 mm A when the teeth tip of the feed dog is aligned with the top surface of throat plate 2 during its upward downward movement How to perform adjustment Loosen th...

Page 9: ...wn Check that the difference of clearance A A between the main feed dog 1 and the sub feed dog 2 is 0 0 1 mm when the teeth tip of feed dog teeth is aligned with the top surface of throat plate 3 duri...

Page 10: ...ic stud D Turn the eccentric stud D to perform adjustment Tighten the setscrew C Checking items 1 Needle 2 Throat plate 3 Feed dog Adjust the stitch length to 2 5 mm When the feed dog 3 and the needle...

Page 11: ...g items 1 Upper looper 2 Needle Check that distance projecting amount from the center of nee dle 2 to the blade point of upper looper 1 is 4 0 0 2 mm A when the upper looper 1 is in its leftmost posit...

Page 12: ...surface of the lower looper thread guide 1 when the lower looper thread guide lever E is in its highest position Check that the lower looper thread guide lever E is lowered by hand when the lower loo...

Page 13: ...be 0 2 mm or less How to perform adjustment Loosen the setscrews C of the lower looper support arm D Move the lower looper support arm D back or forth to adjust the clearance between the needle 1 and...

Page 14: ...per 1 Check that the front to back clearance between the blade point of upper looper 2 and the lower looper 1 is 0 1 to 0 3 mm B How to perform adjustment Loosen the setscrews E of the upper looper ca...

Page 15: ...en the setscrews B 2 B 1 0 to 0 1 mm A 17 Position of upper looper thread take up Checking items 1 Upper looper thread take up 2 Setscrew 3 Looper cover hinge Check that the distance between the lower...

Page 16: ...ole is 5 0 0 2 mm A Check that the presser foot 2 is parallel to the feed dog slot in the throat plate 1 How to perform adjustment Raise the presser foot by lifting the lever Loosen the setscrew B of...

Page 17: ...stment 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 0 3 0 2 mm How...

Page 18: ...t of A move the knob to its position 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 1 inside the front cover...

Page 19: ...n and adjust the clearance between the needle thread take up and the thread in accordance with the illustrations shown below During movement of the needle thread take up it shall not interfere with th...

Page 20: ...sser plate 3 Setscrew 4 Lower knife support plate 5 Setscrew 6 Lower knife Check that the distance between the top surface of throat plate 1 and the lower knife 6 is 0 to 0 3 mm A How to perform adjus...

Page 21: ...gagement The rear end face of upper knife 1 is aligned with the tip of lower knife How to perform adjustment Adjusting the vertical engagement Set the upper knife 1 in its lowest position Fix the uppe...

Page 22: ...0 5 to 1 5 mm B How to perform adjustment Loosen the setscrews C of the cloth plate hinge Move the cloth plate 2 with the hinge in its correct posi tion Tighten the setscrews C Checking items 1 Presse...

Page 23: ......

Page 24: ...EWING 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 C 2015 JUKI CORPORATION All rights reserved throughout...

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