Table of Contents
Related Manuals for JUKI MO-3500
Summary of Contents for JUKI MO-3500
- Page 1 2-Needle, 2/3/4-Thread Overlock Sewing Machine MO-3500 INSTRUCTION MANUAL IMPORTANT: Read all safety regulations carefully and under- stand them before using your sewing machine. Retain this instruction manual for future reference.
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Page 2: Safety Regulations
“IMPORTANT SAFETY INSTRUCTIONS” When using an electrical appliance, basic safety precautions should always be followed, including the following: Read all instructions before using this sewing machine. “DANGER ___ To reduce the risk of electric shock:” 1. The appliance should never be left unattended when plugged in. 2. - Page 3 “SAVE THESE INSTRUCTIONS” “This overlock sewing machine is intended for household use only.” Congratulations on your purchase of a JUKI sewing machine. Please be sure to read safety precautions in “To use the sewing machine safely” in the Instruction Manual before use to fully understand the functions and operating procedures of the sewing ma- chine so as to use the sewing machine for a long time.
- Page 4 WARNING For the combination of the material and the thread and needle, in particular, refer to the explanation table in “Replacement of the needle”. If the needle or thread does not match the material used such as in the case that an extra heavy- weight material (e.g., denim) is sewn with a thin needle (#11 or higher), the needle can break re- sulting in an unexpected personal injury.
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Page 5: Table Of Contents
Contents Safety regulations ........1-3 Threading preparations / Tips ....23 Contents ...........4 Stitch chart ..........24 Details of the machine ......5,6 Threading 4/3 Thread OL ....25-29 • Accessories ..........6 • Lower looper ..........25 • Waste collector ..........6 • Upper looper ..........26 •... -
Page 6: Details Of The Machine
Details of the machine Thread guide support Open thread guide Retractable support rod Micro-lifter dial Thread guide No. 1 Top cover Presser foot pressure regulating knob Spool holder pin Anti - vibration cone Magnet needle tray Foam pad Thread take-up cover Thread stand Chain-off thread cutting button Side cover... -
Page 7: Accessories
Details of the machine ● Accessories Accessory bag Electronic foot control Knee lifter lever (Model No.: JC-002) Dust cover Power cord Spool caps Looper threader Brush/needle inserter Tweezers Wool needle Screwdriver Waste collector T-shape screwdriver Needle set HA×1 No.80(No.12)×3 No.90(No.14)×2 Tractor foot Curve foot Thread guide... -
Page 8: Operation Buttons On The Lcd Screen
Operation buttons on the LCD screen Stitch changeover Stitch changeover Stitch length adjustment knob ❶ ❷ ❸ ❹ ❺ LCD screen Stitch length adjustment dial Differential feed adjust- ❻ ❼ ment dial Differential feed adjustment Button name Function Chain-off thread cutting Use this button to manually cut the chain-off thread. -
Page 9: Editing And Setting
Editing and setting ■ LCD screen display Sewing screen (parameter display) Selection screen A D L M N O (or after a lapse of five seconds) Editing screen Sewing screen (Stitch display) Example) Maximum sewing speed Display contents Display contents Display contents Automatic chain-off thread cut- Recommended value of stitch... - Page 10 2. How to select the stitch Change over the stitch to be sewn by turning the stitch changeover knob. * Select "A" when you want to sew a 1-needle, 3-thread pat- Stitch tern using the left needle. Stitch changeover changeover * Use the right needle.
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Page 11: Preparing The Machine / Using The Machine
Preparing the machine / Using the machine Thread stand 1. Insert retractable support rod (A) into thread guide support (B). 2. Draw out retractable support rod (A) to put it into the positioning stopper until it clicks. Then, install open thread guide (C) so that it is positioned directly above spool holder pin (D). -
Page 12: Attaching The Foot Control
Preparing the machine / Using the machine Attaching the foot control 1. Insert the power cord plug into the machine socket. 2. Insert the controller plug into the controller plug-in port. 3. Insert the power cord plug into the indoor electrical outlet. The foot control regulates the sewing speed. -
Page 13: Using The Machine
Preparing the machine / Using the machine Changing the position of the needle up/down switch If you want to change the position of the needle up/down switch, be CAUTION sure to turn OFF the power switch or unplug the controller. The lateral position of the needle up/down switch can be changed in relation to the controller pedal. -
Page 14: Handwheel
Using the machine Handwheel The handwheel turns forward, i.e. in the same direction as on a household sewing machine. * The needle is brought to its upper end by aligning the “ ” marking on the side of the front cover with the “ ” marking on the handwheel. -
Page 15: Changing The Presser Foot
Using the machine Changing the presser foot When you want to change the presser foot, turn CAUTION OFF the power switch and lower the upper knife. • Raise the presser foot. • Turn handwheel towards you until needles are fully raised. Match the matching up marks on handwheel and side cover. -
Page 16: Upper Knife Is Deactivated
Using the machine To carry out sewing without cutting the material (the upper knife is deactivated) CAUTION Switch the machine off (Power switch to “0”) 1. Lower the upper knife changeover knob in the direction of the arrow. 2. Check to be sure that the knife is lowered. Caution: To use the upper knife, place the upper knife changeover knob to the E position and turn the handwheel by hand about two turns to lift the upper... -
Page 17: Needle And Thread
Needle and thread Needles Needles must be in perfect condition. Problems can occur if nee- dles: A are bent. B are damaged or blunt. C have hooked points. Needle and thread The needle size used depends on the thread. The needles should be in accordance with thread used. When sewing, the thread is fed through the long groove in the needle. -
Page 18: Adjustments And Settings
Adjustments and settings Stitch length It can be adjusted while sewing. To decrease The stitch length is infinitely variable from 0.7 to 4 mm. stitch length Most overlock work is done with a basic setting of 2.5 For roll hemming or narrow overlocking, it is best to set To increase the dial at “0.7 to 1.5”. -
Page 19: Adjusting The Stitch Width Finely
Adjustments and settings Adjusting the stitch width finely This sewing machine automatically controls the thread tension. It should be remembered, however, that in some cases the stitch formation can be improved by turning the looper thread tension fine adjustment knob clockwise or counterclockwise according to the type of material or thread and the differential feed adjustment amount. -
Page 20: Differential Feed
Adjustments and settings Differential feed There are two feed dogs one front (C) and one rear (D). The two feed dogs move independently and the distance each feed dog travels during one complete movement can To decrease differential feed be adjusted. The differential feed prevents fluting or wav- amount ing in knitted or stretch fabrics and movements between the layers of fabric. -
Page 21: Gathering
Adjustments and settings Gathering Using the differential feed, a single layer of fabric can be gathered before sew- ing it to the garment. For example, sleeve heads and lower edges, yokes, lace edging or frills. Adjustment: • Stitch: 4-thread overlock •... -
Page 22: Presser Foot Pressure
Adjustments and settings Presser foot pressure Presser foot pressure regulating knob The presser foot pressure is factory adjusted to a medium setting. Align the marker line on the presser foot pressure regulating knob with the upper end of the top cover. •... -
Page 23: Automatic Chain-Off Thread Cutting
Adjustments and settings Automatic chain-off thread cutting When the automatic chain-off thread cutting function is enabled, the material end is detected at the end of sewing Automatic chain-off and chain-off thread is automatically cut to the set length. thread cutter sensor * If the material is present on the sensor, the chain-off thread cutter will not operate. -
Page 24: Threading Preparations / Tips
Threading preparations / Tips 1. Extend the retractable support rod fitted with open thread guide as far as it goes. 2. Raise the presser foot. (Tension disk opens.) 3. Open the looper cover. 4. Turn the power on. Threading sequence The thread guides can be threaded in any sequence. -
Page 25: Stitch Chart
Stitch chart Stitch changeover Stitch Stitch width Basic settings knob 4-Thread overlock with Stitch length: 2.5 integrated safety seam Cutting width: 2.5-5.0 5-7.5 mm, (Left needle 4.5-7.0) right and left needles Differential: N-2 (knits) 0.7-N (wovens) 3-Thread overlock Stitch length: 2.5 5-7.5 mm, left needle Cutting width: 2.5-5.0 Left... -
Page 26: Threading 4/3 Thread Ol
Threading 4/3 Thread OL Lower looper thread, red markings Switch the machine off (power switch”0”) Place the spool on the spool holder pin as illustrated. (1) Raise the threading changeover lever in the direction of the arrow. Turn the handwheel toward you until it clicks. (The threading pipe is connected.) Thread (2) Thread the thread guide which is located just above... -
Page 27: Upper Looper
Threading 4/3 Thread OL Upper looper thread, blue markings Switch the machine off (power switch”0”) Place the spool on the spool holder pin as illustrated. (1) Raise the threading changeover lever in the direction of the arrow. Turn the handwheel toward you until it clicks. (The threading pipe is connected.) (2) Thread the thread guide which is located just above Thread... -
Page 28: Right Needle
Threading 4/3 Thread OL Right-hand needle, green markings Switch the machine off (power switch”0”) Place the spool on the spool holder pin as illustrated. (1) Thread the thread guide which is located just above the spool from back to front. At this time, fit the thread firmly in the groove. -
Page 29: Left Needle
Threading 4/3 Thread OL Left-hand needle, beige markings Switch the machine off (power switch”0”) Place the spool on the spool holder pin as illustrated. (1) Thread the thread guide which is located just above the spool from back to front. At this time, fit the thread firmly in the groove. -
Page 30: How To Use The Looper Threader
Threading 4/3 Thread OL How to use the looper threader To thread woolly thread or any thread that cannot pass smoothly through the threading holes, it is recommended either to use the “looper threader” supplied in the acces- sory bag, or to prepare an approximately 30cm long spun thread or the like, tie it at the end of the woolly thread, pass the spun thread through the threading hole and pull it until the woolly thread passes through the hole. -
Page 31: Trial Sewing
Trial sewing Sewing test Sew two pieces of the material together. Then, check whether or not the finished seam is correct. 1. Close the looper cover. Turn the power on. 2. Check that the upper knife is raised. 3. Lower the presser foot. 4. -
Page 32: Practical Sewing - Overlock
Practical Sewing - Overlock 2-needle, 4-thread overlocking Be sure to turn OFF the pow- CAUTION er switch before removing or attaching the needle. 1. Attach both of two needles. (It is the standard state of Left Right Upper Lower needle needle looper looper... -
Page 33: 1-Needle 3-Thread Overlocking
Practical Sewing - Overlock 1-needle 3-thread overlocking Be sure to turn OFF the pow- CAUTION er switch before removing or attaching the needle. Right Upper Lower Left Upper Lower needle looper looper needle looper looper thread thread thread thread thread thread For wrapped overlocking with the left needle For wrapped overlocking with the right needle... -
Page 34: 1-Needle 2-Thread Overlocking
Practical Sewing - Overlock 1-needle 2-thread overlocking Be sure to turn OFF the power switch CAUTION before removing or attaching the needle. It is possible to carry out overcasting, decorative stitching (unfolded Right Lower seam stitching) and 2-thread hemming with two threads by threading needle looper thread... -
Page 35: Rolled Hemming And Narrow Overlocking
Practical Sewing - Overlock Rolled hemming and narrow overlocking Be sure to turn OFF the pow- CAUTION er switch before removing or attaching the needle. The sewing machine incorporates the hemming device to enable roll hemming and narrow overlocking. The sewing machine is able to overlock the material edges such as bottoms and sleeve cuffs beautifully while automatically folding them inwardly. -
Page 36: Sewing In Tape
Practical Sewing - Overlock Sewing in tape The standard presser foot is equipped with a tape guide. A tape can be sewn into the shoulder or side seams of gar- ments made from knits or stretch fabrics to prevent stretch- ing. -
Page 37: Securing Thread Ends At The Beginning And End Of Sewing
Practical Sewing - Overlock Securing thread ends at the beginning and end of sewing Overlock stitches can unravel if the threads are not secured at the beginning and end of sewing. Secure the thread ends. Securing thread ends with the overlock machine 1) Securing thread ends at the beginning of sewing 1. - Page 38 Practical Sewing - Overlock In the case of securing thread ends with a wool needle: (A) Leave a 2 to 3 cm long chain-off thread at the beginning and end of sewing. Put the chain-off threads in the finished seam by means of a wool needle. In the case of securing thread ends with glue for handicraft: (B) Apply a little amount of glue for handicraft at the root of chain-off thread on the material.
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Page 39: Maintenance
Maintenance Cleaning and lubricating Turn off the power switch and disconnect the power plug from the wall outlet before CAUTION starting cleaning or lubricating the ma- chine. As you use the sewing machine, lint is likely to accumulate in the sewing machine. -
Page 40: Replacing The Knife
Maintenance To carry out cleaning with the cloth plate opened Be sure to turn off the power switch be- CAUTION fore opening the cloth plate. • How to open the cloth plate Push this side of the cloth plate to the left to open it. •... -
Page 41: Error Display
Error display Display Description of error Corrective measure When you have depressed the Lower the presser foot. controller while the presser foot is left in its upper position. When the chain-off thread cutter Remove any objects caught in the path of the chain- has failed to return to its home po- off thread cutter, if any, and press the chain-off thread sition and stopped. -
Page 42: Trouble Shooting Guide
Trouble shooting guide Problem Cause Solution Page The machine • Looper or cloth plate cover is open. • Close the looper or the cloth plate cov- does not sew: • The main switch is not on. • Switch machine on. (Main switch to “I”) •... - Page 43 Trouble shooting guide Problem Cause Solution Page Motor abnormal- • Noise is heard. • Replace the carbon brush with a new ities • Motor does not turn at all. one. • Sparks are abnormally large. (Note) Contact your distributor to ask for the replacement of the carbon brush.
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Page 44: Technical Data
Technical data Stitch choice Over lock 2 needles, 2 loopers: 4 thread overlock with integrated safety seam 1 needle, 2 loopers: 3 thread overlock, flatlock roll hem 1 needle, 1 looper: 2 thread overlock, flatlock roll hem 2 needles, 1 looper: 3 thread super stretch Needle system SCHMETZ 130/705 H or JLx2 Seam width... -
Page 45: Optional Accessories
Optional Accessories • Blind stitch presser foot • Piping presser foot • Universal Blind Stitch Presser Foot • Elasticator • Beading presser foot • Cording presser foot • Gathering presser foot • Curved Beading Presser • Clear foot Foot • Wide table Contact your local dealer. - Page 48 2-11-1, TSURUMAKI, TAMA-SHI, TOKYO, 206-8551, JAPAN PHONE : (81)42-357-2341 FAX : (81)42-357-2379 Copyright © 2022 JUKI CORPORATION All rights reserved throughout the world. 40271345 000822...