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JUKI LH-3500 Series Instruction Manual

Lh-3500 series
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ENGLISH
LH-3500 Series
INSTRUCTION MANUAL

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Summary of Contents for JUKI LH-3500 Series

  • Page 1 ENGLISH LH-3500 Series INSTRUCTION MANUAL...

  • Page 2: Table Of Contents

    CONTENTS 1. SPECIFICATIONS ......................1 2. NAME OF EACH COMPONENT ..................3 3. INSTALLATION ........................ 4 3-1. Caution at the time of set-up ..........................4 3-2. Installation of the sewing machine ........................5 3-3. Adjusting the height of the knee lifter ......................... 7 3-4.

  • Page 3: Specifications

    3.2 to 3.8 mm Lift of presser foot 3 mm by knee lifter, 7 mm by hand lifter lever Lubrication JUKI NEW DEFRIX OIL No.  or JUKI MACHINE OIL #7 Workplace-related noise at sewing speed – Noise n = 2,750 min ≦...
  • Page 4 Lift of presser foot 3 mm by knee lifter, 7 mm by hand lifter lever Lubrication JUKI NEW DEFRIX OIL No.  or JUKI MACHINE OIL #7 Declaration - Equivalent continuous emission sound pressure level (L ) at the workstation : A-weighted value of 86.5 dB ;...

  • Page 5: Name Of Each Component

    2. NAME OF EACH COMPONENT 1 Separately drven needle changeover lever 8 Power swtch (LH-3568, 3568-7, 3588, 3588-7) 9 Reverse feed swtch Reverse feed swtch 2 Thread take-up cover !0 Operaton panel 3 Fnger guard !1 Bobbn wnder 4 Thread tenson controller !2 Thread stand 5 Control box !3 Ol supply openng...

  • Page 6: Installation

    3. INSTALLATION 3-1. Caution at the time of set-up Transporting procedure of the sewing machine Hold and transport the sewng machne wth two persons as shown n the llustraton. Caution when placing the sewing machine Do not put protrudng artcles such as the screwdrver and the lke at the locaton where the sewng machne s placed.

  • Page 7: Installation Of The Sewing Machine

    3-2. Installation of the sewing machine (1) Installing the under cover The under cover should rest on the four corners of the machne table groove. Fx two rubber seats 1 on sde A (operator’ s sde) usng nals 2 as llustrated above. Fx 22.5 mm 18.5 mm two cushon seats 3 on sde B (hnged sde)
  • Page 8 Insert hnge 6 nto the machne man body. Ft the machne head to table rubber hnges 7 and place t on head cushons 8 on the four corners. Attach head support rod 9 to the table. Remove nlet port !0 for crculaton whch is fixed to the oil tank installing plate, and securely insert it into filter !1 untl t goes no further after removng cap !4 whch s...

  • Page 9: Adjusting The Height Of The Knee Lifter

    3-3. Adjusting the height of the knee lifter 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. The standard heght of the presser foot lfted usng the knee lfter s 2 mm.

  • Page 10: Preparation Of The Sewing Machine

    4. PREPARATION OF THE SEWING MACHINE 4-1. Method of lubrication () Method of circulating lubrication (when the oil collected in the under cover is reused) Lubrication to hook side Plunger Circulation Filter for plunger Oil tank Filter for plunger 2 Lubrication Circulation Filter for circulation...

  • Page 11: Lubrication To The Oil Tank

    • When you use a new sewing machine or a sewing machine after an extended period of disuse, use the sewing machine after performing break-in at 2,000 sti/min or less. • For the oil for hook lubrication, purchase JUKI NEW DEFRIX OIL No.  (Part No. : MDFRX600C0) or JUKI MACHINE OIL #7 (Part No. : MML007600CA).

  • Page 12: Draining Of Oil From The Oil Tank

    4-3. Draining of oil from the oil tank WARNING : 1. To prevent accidents caused by abrupt start of the sewing machine, do not connect the power plug until draining of oil has been completed. 2. To prevent the occurrence of an inflammation or rash, immediately wash the related portions if oil adheres to your eyes or other parts of your body.
  • Page 13 To use in safety, replace the oil wick of hook section with a new one approximately once a year with the procedure below. Loosen setscrews 2 (small hook : 2 places, large hook : 3 places) and remove hook gb 1 . Remove nner hook 3 .

  • Page 14: Oil In The Feed Box

    4-5. Oil in the feed box When usng the sewng machne, make sure that the oil is put in the feed box from oil confirming wndow 1 . Do not add oil to the feed box since the adequate amount of oil which is different from the hook oil has been put in the feed box.

  • Page 15: Applying Grease

    • When grease is applied more than is necessary, there is a fear that grease leaks from the thread take-up lever cover section or the needle bar. So, be careful. • Be sure to use the grease contained in JUKI GREASE A TUBE (Part No. : 40006323) supplied with the machine head as accessories.
  • Page 16 [LH-3568, 3568-7, 3588, 3588-7] Thread take-up lever (oil wick) Felt Needle bar Square block Needle bar bracket Face plate lubrication felt [Common] Remove the rubber cap, take out the felt n A , pour new grease n the hole, and put the felt to whch grease has been soaked after removng old grease adhered to the nsde of the hole and the felt.
  • Page 17 [Releasing procedure of the grease-up warning] For SC-500 When a certan number of tmes of sewng has been performed, error code No. 220 1 s dsplayed n the control box at the time of turning ON the power, and warning buzzer sound five times intermittently. This warning informs of the grease replenishment time of the specified place.

  • Page 18: Installing The Belt Cover And The Bobbin Thread Winder

    4-7. Installing the belt cover and the bobbin thread winder 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. 75.5 (mm) Drll gude holes A , B , C and D of wood screws n the table.

  • Page 19: How To Take Out The Bobbin Case

    4-9. How to take out the bobbin case 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. Lft latch 1 and take out the bobbn case and the bobbn together.

  • Page 20: Threading The Machine Head

    4-11. Threading the machine head 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. Fig C Fig D Intermediate...

  • Page 21: Thread Tension

    4-12. Thread tension 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. Needle thread tenson Turn thread tenson nut No.

  • Page 22: Thread Take-Up Spring

    4-13. Thread take-up spring 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) When you want to change the stroke of the thread take-up spring To turn Stroke of thread take-up sprng 1 on the rght s adjustable by movng thread tenson No.

  • Page 23: Adjusting The Stitch Length

    4-14. Adjusting the stitch length Turn sttch dal 1 counterclockwse (clockwse) to set the value on the dal correspondng to a desred sttch length to the marker dot 3 engraved on the machne arm. When t s hard to turn sttch dal 1 , turn t whle slghtly depressng reverse feed control lever 2 .
  • Page 24 [LH-3568, 3568-7, 3588, 3588-7] • Adjust the needle and the hook as follows. [Adjusting procedure for DP X 5 needle] Adjust the sttch dal to the scale (type S : 2.5, type G : 3). Turn the handwheel to algn the blade pont of hook wth the center of needle when the needle bar goes up by 2.2 mm from the lowest poston (lower...

  • Page 25: Adjusting The Needle Stop Position

    4-16. Adjusting the needle stop position 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. [LH-3528-7, 3568-7, 3578-7, 3588-7] (1) Stop position after thread trimming The standard needle stop poston s obtaned...

  • Page 26: Pedal Pressure And Pedal Stroke

    4-17. Pedal pressure and pedal stroke 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) Adjusting the pressure required to depress the front part of the pedal Ths pressure can be adjusted by alterng the...

  • Page 27: Operation Of The Sewing Machine

    5. OPERATION OF THE SEWING MACHINE 5-1. Pedal Operation (1) The pedal is operated in the following four steps: The machne runs at low sewng speed when you lghtly depress the front part of the pedal. The machne runs at hgh sewng speed when you further depress the front part of the pedal.

  • Page 28: Adjusting The Pressure Of The Presser Foot

    5-3. Adjusting the pressure of the presser foot Loosen nut 2 by turnng counterclockwse, and turn presser sprng regulator 1 to adjust the Decrease Increase pressure. Turn the regulator clockwse to ncrease the pressure and turn t counterclockwse to decrease the pressure. After the adjustment, tghten nut 2 .

  • Page 29: Thread Tension Release Changeover When Using The Knee Lifter

    5-5. Thread tension release changeover when using the knee lifter At the tme of delvery of LH-3568 and 3568-7, 3588, 3588-7 the knee lfter or AK devce s not nterlocked wth the thread tenson release of thread tenson controller. When releasng the thread tenson, press lever 1 to rse the dsks.

  • Page 30: Maintenance

    6. MAINTENANCE 6-1. Changing procedure to bottom feed and the adjustment (for LH-3528 only) 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. Loosen hnge screw 1 after adjustng the feed dal to the mnmum, move needle bar rockng rod 2 from needle bar rockng rod...

  • Page 31: Changing Procedure To Needle Feed And The Adjustment (For Lh-3528 Only)

    6-2. Changing procedure to needle feed and the adjustment (for LH-3528 only) 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. The procedure s the reverse of "6-.

  • Page 32: Adjusting The Hook Needle Guard

    6-3. Adjusting the hook needle guard 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. (Bend inward.) (Bend outward.) 0 to 0.05mm...

  • Page 33: Adjusting The Height And The Inclination Of The Feed Dog

    6-5. Adjusting the height and the inclination of the feed dog 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) Adjusting the height Loosen bottom feed lnk setscrew 1 , and turn feed drvng lnk shaft 2 to adjust the heght.

  • Page 34: Replacing The Gauge

    6-6. Replacing the gauge 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. Drive arm pin Drive arm pin •...

  • Page 35: Adjusting The Thread Presser Spring

    6-7. Adjusting the thread presser spring 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. Insert a rod (thn rod, wrench, etc.) nto adjustng hole 2 n thread presser sprng base 1 , and loosen setscrew 4 wth a hexagonal wrench key...

  • Page 36: Adjusting The Position Of The Moving Knife

    6-8. Adjusting the position of the moving knife 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. Algn counter knfe base 1 wth plane A of counter knfe 2 .

  • Page 37: Position Of The Wiper

    6-9. Position of the wiper 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. Needle Adjust engraved marker dot 1 on the machne arm to whte marker dot 2 on the handwheel.

  • Page 38: Replacing The Bobbin Thread Slack Preventer Sprlng (For Lh-3568, 3568-7, 3588, 3588-7)

    6-11. Replacing the bobbin thread slack preventer sprlng (For LH-3568, 3568-7, 3588, 3588-7) Loosen screw 1 and remove bobbin thread slack preventer spring 2 from the groove on the bobbin case. Fit bobbin thread slack preventer spring 2 which replaces the removed spring in the bobbin case through the groove.

  • Page 39: Stitch-To-Angle Table By Gauge (Pitch And Mm Conversion Table)

    7. STITCH-TO-ANGLE TABLE BY GAUGE (PITCH AND mm CONVERSION TABLE) /8"(3.7mm) 5/32"(3.96mm) Number of Number of sttches sttches Turnng Turnng angle angle 3/6"(4.76mm) 7/32"(5.56mm) Number of Number of sttches sttches Turnng Turnng angle angle /4"(6.35mm) 9/32"(7.4mm) Number of Number of sttches sttches Turnng...

  • Page 40: Gauge Sets

    8. GAUGE SETS (1) LH-3528 Swvel gude Needle gauze sze Presser foot asm. Presser foot asm. Tp-dvded Tp-dvded Lower feed Code nch Part No. Part No. Part No. Part No. Part No. Part No. 226-37557 226-37656 400-35896 400-35896 103-91852 226-27152 226-47051 226-37755 400-35897...
  • Page 41 Needle gauze sze Feed dog 1.15 Code φ1.4 φ1.7 2.2mm φ1.9 φ2.2 φ1.2 φ1.4 Opton Opton Opton Part No. Part No. Part No. Part No. Part No. Part No. Part No. nch 400-33714 400-33715 400-35883 400-33563 400-33563 B1613-512-B0H 400-33716 226-30206 400-25784 B1613-512-C0H 400-33718...
  • Page 42 (2) LH-3528-7 Needle gauze sze Throat Plate Needle clamp asm. Feed dog Code 2.2mm φ1.7 φ1.9 φ2.4 Wre type Hole type Opton Opton nch Part No. Part No. Part No. Part No. Part No. Part No. Part No. 3 32 400-35875 101-47551 400-35881...
  • Page 43 (3) LH-3568 Sldng plate asm. Sldng plate asm. Needle gauze sze Needle clamp asm. (DP5) (Front) (Left) Needle clamp asm. Needle clamp asm. Needle clamp asm. Needle clamp asm. (Left) (Rght) (Left) (Rght) Code Wre type Wre type Hole type Hole type Opton nch...
  • Page 44 (4) LH-3568-7 Needle gauze sze Feed dog Presser foot asm. Throat Plate Tp-dvded Tp-dvded Opton Opton Code φ1.9 2.2mm φ2.4 φ1.7 nch Part No. Part No. Part No. Part No. Part No. Part No. Part No. 400-35896 400-35896 400-35881 400-61270 400-35890 400-53705 400-53705...
  • Page 45 (5) LH-3578 Needle gauze sze Presser foot asm. Throat Plate Feed dog Needle clamp asm. Tp-dvded Opton Code 2.2mm φ2.2 nch Part No. Part No. Part No. Part No. Part No. 400-35896 400-72337 B1613-512-B0H 101-47650 400-71909 400-72338 B1613-512-C0H 101-47759 228-16557 226-25305 B1613-512-D0H 400-25801...
  • Page 46 (6) LH-3578-7 Needle gauze sze Presser foot asm. Throat Plate Feed dog Needle clamp asm. Tp-dvded Code 2.2mm φ2.4 Opton Part No. Part No. Part No. Part No. Part No. nch 400-35896 400-53705 400-53705 400-35881 101-47650 400-71909 400-25485 101-47759 400-71911 228-16557 400-25490 400-35891...
  • Page 47 (7) LH-3588 Needle gauze sze Needle clamp asm. (DP5) Needle clamp asm. (DP7) Needle clamp asm. Needle clamp asm. Needle clamp asm. Needle clamp asm. (Left) (Left) (Rght) (Rght) Code Opton Opton nch Part No. Part No. Part No. Part No. B1402-528-BA0-A B1402-528-BA0-A B1402-526-BA0-A...
  • Page 48 (8) LH-3588-7 Needle gauze sze Needle clamp asm. (DP5) Needle clamp asm. (DP7) Needle clamp asm. Needle clamp asm. Needle clamp asm. Needle clamp asm. (Left) (Left) (Rght) (Rght) Code Opton Opton nch Part No. Part No. Part No. Part No. B1402-528-BA0-A B1402-528-BA0-A B1402-526-BA0-A...

  • Page 49: Troubles And Corrective Measures

    9. TROUBLES AND CORRECTIVE MEASURES TROUBLES CAUSES CORRECTIVE MEASURES Thread breakage 1 There s a sharp edge or burr on ™ Remove sharp edge or burr using a fine (Thread s the thread path, needle pont, sandpaper. Polsh the surface of the untwsted or hook blade pont or bobbn case bobbn case restng groove on the throat...

  • Page 50: Motor Pulley And Belt

    10. MOTOR PULLEY AND BELT (1) Motor pulley and belt for the machine without thread trimmer are as described below. Use a clutch motor with an output 400 W (2P). Use M type V belt. The relation between the motor pulley, belt length and number of revolutions of sewing machine is as shown in the list below.

This manual is also suitable for:

Lh-3528Lh-3528-7Lh-3568Lh-3568-7Lh-3578Lh-3578-7 ... Show all

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