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JUKI MH-486-5 Instruction Manual

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MH-486-5

INSTRUCTION MANUAL

NOTE :
Read safety instructions carefully and understand them before using.
Retain this Instruction Manual for future reference.
No.03
40095699

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Summary of Contents for JUKI MH-486-5

  • Page 1: Instruction Manual

    MH-486-5 INSTRUCTION MANUAL NOTE : Read safety instructions carefully and understand them before using. Retain this Instruction Manual for future reference. No.03 40095699...
  • Page 3 TO ENSURE SAFE USE OF YOUR SEWING MACHINE For the sewing machine, automatic machine and ancillary devices (hereinafter collectively referred to as "machine"), it is inevitable to conduct sewing work near moving parts of the machine. This means that there is always a possibility of unintentionally coming in contact with the moving parts.

  • Page 4: Safety Precautions

    SAFETY PRECAUTIONS DANGER CAUTION ii ii...
  • Page 5 iii iii...
  • Page 6 iv iv...
  • Page 7 Precautions to be taken so as to use the MH-486-5 more safely 1. Keep your hands away from needle when you turn oN the power switch or while the machine is in operation. 2. Do not put your fingers into the thread take-up cover while the machine is operating. 3. turn oFF the power switch when tilting the machine head, or removing the belt cover or the V belts.

  • Page 8: Before Operation

    BEForE oPEratIoN cautIoN : Check the following so as to prevent maloperation of and damage to the machine. • Before you put the machine into operation for the first time after the set-up, clean it thoroughly . remove all dust gathering during transportation and oil it well. • Confirm that voltage has been correctly set. Confirm that the power plug has been properly connected to the power supply. • Never use the machine in the state where the voltage type is different from the designated one. • The direction of normal rotation of the machine is counterclockwise as observed from the pul- ley side.
  • Page 9 Model MH-380 Series,MH-480 Series Description Industrial Sewing Machine Function make stitches and sew Applied harmonized standards, in particular : EN ISO12100, EN ISO10821, EN 50581 Manufacturer : JUKI CORPORATION 2-11-1, Tsurumaki, Tama-shi, Tokyo, Japan...

  • Page 10: Table Of Contents

    CONTENTS SPECIFICATIONS..........................1 . 1.. INSTALLATION........................1 . 2.. ADJUSTING.THE.BELT.TENSION...................2 . 3.. ATTACHING.THE.THREAD.STAND..................2 . 4.. LUBRICATION........................3 . 5.. ATTACHING.THE.SILICON.OIL.LUBRICATING.UNIT.............4 . 6.. ATTACHING.THE.BELT.COVER....................4 . 7.. ATTACHING.THE.NEEDLE.....................5 . 8.. THREADING.THE.MACHINE.HEAD..................5 . 9.. THREADING.THE.LOOPERS....................5 . 10.. ADJUSTING.THE.STITCH.LENGTH..................6 . 11.. THREAD.TENSION.........................6 .

  • Page 11: Specifications

    Looper stroke 21.5 mm Lubrication system Fully automatic lubrication JUKI New Defrix Oil No.1 - Equivalent continuous emission sound pressure level (L ) at the workstation: A-weighted value of 83.5 dB; (Includes K = 2.5 dB); according to ISO 10821- C.6.2 -ISO 11204 GR2 at 4,500 sti/min.

  • Page 12: Adjusting.the.belt.tension

    5) Fit hinge 7 into the opening in the machine bed, and fit the machine head to table rubber hinge before placing the machine head on rubber seats on the four corners. 6) Securely attach head support rod 8 to the table until it goes no further. .

  • Page 13: Lubrication

    Oil.reservoir LOW.mark 1. Before operation, fill the oil reservoir with JUKI New Defrix Oil No.1 up to the HIGH mark. 2. Whenever the oil level drops to the LOW mark, add more oil. 3. When the sewing machine is run after the oil reservoir has been filled, oil can be seen splashing on the oil sight window. However, the amount of oil splash has no relation to the amount of oil in the reservoir so there is no need to worry.

  • Page 14: Attaching.the.silicon.oil.lubricating.unit

    . 5 .. ATTACHING.THE.SILICON.OIL.LUBRICATING.UNIT . 6 .. ATTACHING.THE.BELT.COVER WARNING.: To.avoid.possible.personal.injury.due.to.abrupt.start.of.the.machine,.turn.off.the.power.to.the.machine.and.check.to.be.sure.that.the. motor.has.totally.stopped.rotating.in.prior. 1. Insert belt cover support 1 into the tapped hole in the machine arm. 2. Temporarily fix belt cover 2 on the machine head with screws. 3. Slightly tilting the machine head, put rid 3 of the belt cover inside the outer pulley and fix rid 3 with four screws.

  • Page 15: Attaching.the.needle

    . 7 .. ATTACHING.THE.NEEDLE WARNING.: To.avoid.possible.personal.injury.due.to.abrupt.start.of.the.machine,.turn.off.the.power.to.the.machine.and.check.to.be.sure.that.the. motor.has.totally.stopped.rotating.in.prior. Use a Schmets 149×7 needle. Different needle counts are applicable. However, select an appropriate one according to the thickness of thread and the type of material to be used. (Nm 70 to Nm 130) 1) Turn the handwheel to bring the needle bar to the highest position of its stroke.

  • Page 16: Adjusting.the.stitch.length

    . 1 0..ADJUSTING.THE.STITCH.LENGTH WARNING.: To.avoid.possible.personal.injury.due.to.abrupt.start.of.the.machine,.turn.off.the.power.to.the.machine.and.check.to.be.sure.that.the. motor.has.totally.stopped.rotating.in.prior. Turn feed regulator dial 1 counterclockwise or clockwise and align the desired number with the pin protruding from the arm. The numbers on the dial indicate millimeters. When reducing the indication turn the feed regulator dial while depressing reverse feed control lever 2 . ★...

  • Page 17: Hand.lifter

    . 1 3..HAND.LIFTER In order to stop the presser foot in the raised position, turn hand lifter 1 clockwise. The presser foot will stop after rising about 5.5 mm. It can be lowered to its original position by lowering the hand lifter. When using the knee lifter, the presser foot will rise about 7 mm.

  • Page 18: Thread.spreader

    . 1 6..THREAD.SPREADER WARNING.: To.avoid.possible.personal.injury.due.to.abrupt.start.of.the.machine,.turn.off.the.power.to.the.machine.and.check.to.be.sure.that.the. motor.has.totally.stopped.rotating.in.prior. – 8 –...

  • Page 19: Matching.the.motion.of.the.needle.guards.with.the.loop.guide

    . 1 7..MATCHING.THE.MOTION.OF.THE.NEEDLE.GUARDS.WITH.THE.LOOP.GUIDE WARNING.: To.avoid.possible.personal.injury.due.to.abrupt.start.of.the.machine,.turn.off.the.power.to.the.machine.and.check.to.be.sure.that.the. motor.has.totally.stopped.rotating.in.prior. . 1 8..POSITION.OF.THE.LOOPER.THREAD.TAKE-UP WARNING.: To.avoid.possible.personal.injury.due.to.abrupt.start.of.the.machine,.turn.off.the.power.to.the.machine.and.check.to.be.sure.that.the. motor.has.totally.stopped.rotating.in.prior. Loosen setscrew 4 . Adjust the position of looper thread cam 1 so that wire 3 is visible through guide hole B when third marker line A (third from the top) of the needle bar 2 aligns with the bottom end face of the needle bar lower bushing.

  • Page 20: Adjusting.the.feed.timing

    . 2 0..ADJUSTING.THE.FEED.TIMING WARNING.: To.avoid.possible.personal.injury.due.to.abrupt.start.of.the.machine,.turn.off.the.power.to.the.machine.and.check.to.be.sure.that.the. motor.has.totally.stopped.rotating.in.prior. . 2 1..ATTACHING.THE.FEED.DOG WARNING.: To.avoid.possible.personal.injury.due.to.abrupt.start.of.the.machine,.turn.off.the.power.to.the.machine.and.check.to.be.sure.that.the. motor.has.totally.stopped.rotating.in.prior. By loosening screw 2 , the tilt of the feed dog can be ad- justed to type A (effective for reducing puckering) or type B in addition the standard tilt. The maximum projection of the feed dog is 0.8 mm.

  • Page 21: Thread.trimmer

    . 2 3..THREAD.TRIMMER WARNING.: To.avoid.possible.personal.injury.due.to.abrupt.start.of.the.machine,.turn.off.the.power.to.the.machine.and.check.to.be.sure.that.the. motor.has.totally.stopped.rotating.in.prior. – 11 –...

  • Page 22: Adjusting.the.draw-Out.amount.of.the.looper.thread

    . 2 4..ADJUSTING.THE.DRAW-OUT.AMOUNT.OF.THE.LOOPER.THREAD WARNING.: To.avoid.possible.personal.injury.due.to.abrupt.start.of.the.machine,.turn.off.the.power.to.the.machine.and.check.to.be.sure.that.the. motor.has.totally.stopped.rotating.in.prior. The standard amount of looper thread is drawn out when looper thread draw-out lever 1 is spaced 3 mm from the thread path hole in cam thread guide 2 immediately before the thread trimmer is actuated. Loosen nut 3 and make adjustment by moving cam thread tension release slide block 4 to the right or left.

  • Page 23: Gauge.parts

    . 2 6...GAUGE.PARTS . 2 7..ADJUSTING.THE.TOP.FEED.AMOUNT WARNING.: To.avoid.possible.personal.injury.due.to.abrupt.start.of.the.machine,.turn.off.the.power.to.the.machine.and.check.to.be.sure.that.the. motor.has.totally.stopped.rotating.in.prior. – 13 –...

  • Page 24: Correcting.the.cloth.slippage

    . 2 8..CORRECTING.THE.CLOTH.SLIPPAGE 1. If the lower cloth is longer than the upper cloth at the sewing end, turn the top feed adjusting dial counter clockwise ("–" direction). 2. If the upper cloth is longer than the lower cloth at the sewing end, turn the top feed adjusting dial clockwise ("+"...

  • Page 25: Wiper

    . 3 0..WIPER WARNING.: To.avoid.possible.personal.injury.due.to.abrupt.start.of.the.machine,.turn.off.the.power.to.the.machine.and.check.to.be.sure.that.the. motor.has.totally.stopped.rotating.in.prior. . 3 1..POSITION.OF.THE.THREAD.TAKE-UP.LEVER WARNING.: To.avoid.possible.personal.injury.due.to.abrupt.start.of.the.machine,.turn.off.the.power.to.the.machine.and.check.to.be.sure.that.the. motor.has.totally.stopped.rotating.in.prior. – 15 –...

  • Page 26: Partial.shirring.device.(Pf-3)

    . 3 2..PARTIAL.SHIRRING.DEVICE.(PF-3) WARNING.: To.avoid.possible.personal.injury.due.to.abrupt.start.of.the.machine,.turn.off.the.power.to.the.machine.and.check.to.be.sure.that.the. motor.has.totally.stopped.rotating.in.prior. – 16 –...

  • Page 27: Troubles.and.corrective.measures

    . 3 3..TROUBLES.AND.CORRECTIVE.MEASURES – 17 –...
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  • Page 32 Please do not hesitate to contact our distributors or agents in your area for further information when necessary. Copyright C 2011-2013 JUKI CORPORATION ＊ The description covered in this instruction manual is subject to change for improvement of the •...

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