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JUKI LH-3528 User Manual

JUKI LH-3528
43 pages
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ENGLISH
INSTRUCTION MANUAL

Table of Contents

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JUKI LH-3528 Specifications

General IconGeneral
BrandJUKI
ModelLH-3528
CategorySewing Machine
LanguageEnglish

Summary

3. INSTALLATION

3-1. Caution at the time of set-up

Safety precautions for setting up the sewing machine, including transport and placement guidelines.

3-2. Installation of the sewing machine

Detailed steps for installing the machine head onto the table and connecting various components.

3-3. Adjusting the height of the knee lifter

Procedure for setting the correct lifting height for the knee lifter mechanism.

3-4. Installation of thread stand

Instructions for assembling and mounting the thread stand onto the sewing machine.

4. PREPARATION OF THE SEWING MACHINE

4-1. Method of lubrication

Covers circulating and non-circulating lubrication methods for the sewing machine.

4-2. Lubrication to the oil tank

Instructions on how to fill the oil tank with the correct type and amount of lubricating oil.

4-3. Adjusting the amount of oil in the hook

Procedure for adjusting the oil flow to the hook mechanism for proper lubrication.

4-5. Applying grease

Guidance on periodic greasing of specific points for long-term machine maintenance.

4-7. Attaching the needles

Steps for correctly inserting and securing needles into the needle clamp.

4-10. Threading the machine head

Detailed instructions for threading the needle and other thread guides.

4-11. Thread tension

How to adjust needle and bobbin thread tension for optimal stitch quality.

4-14. Needle-to-hook relation

Procedure for aligning the needle and hook for correct stitch formation.

4-17. Adjustment of the pedal

Steps for adjusting pedal pressure, stroke, and angle for comfortable operation.

5. OPERATION OF THE SEWING MACHINE

5-1. Pedal Operation

Explanation of how to use the foot pedal for controlling sewing speed and thread trimming.

5-2. Hand lifter

Instructions on using the hand lifter to raise or lower the presser foot.

5-3. Adjusting the pressure of the presser foot

Procedure for adjusting the downward pressure of the presser foot.

5-6. One-touch manual reverse feed (One-touch reverse feed type)

How to use the one-touch reverse feed function for backstitching.

6. MAINTENANCE

6-1. Changing procedure to bottom feed and the adjustment

Steps for switching the feed mechanism to bottom feed and making necessary adjustments.

6-2. Changing procedure to needle feed and the adjustment

Steps for switching the feed mechanism to needle feed and making necessary adjustments.

6-3. Adjusting the hook needle guard

Procedure for adjusting the hook needle guard to prevent needle breakage.

6-5. Adjusting the height and the inclination of the feed dog

How to adjust the vertical height and angle of the feed dog.

6-6. Replacing the gauge

Instructions for replacing the gauge component of the sewing machine.

6-8. Adjusting the position of the moving knife

Procedure for adjusting the position of the moving knife for proper thread trimming.

6-11. Replacing the bobbin thread slack preventer spring (For LH-3568, 3568-7)

Steps for replacing the bobbin thread slack preventer spring on specific models.

6-12. Stop of the needle bars and angle of corners for corners stitching (For LH-3568, 3568-7)

How to stop individual needle bars and determine stitch counts for corner stitching.

9. TROUBLES AND CORRECTIVE MEASURES

1. Thread breakage

Diagnosing and fixing problems related to thread breaking or untwisting during sewing.

2. Stitch skipping

Troubleshooting steps for when stitches are skipped or formed incorrectly.

3. Loose stitch

Resolving issues that cause loose stitches, including bobbin tension and thread path problems.

10. MOTOR PULLEY AND BELT

Motor pulley and belt for machines without thread trimmer

Specifications for pulleys and belts used with sewing machines that do not have a thread trimmer.

For the machine with thread trimmer

Details on the M type belt required for sewing machines equipped with a thread trimmer.

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