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JUKI MH-484 User Manual

JUKI MH-484
13 pages
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JUKI MH-484 Specifications

General IconGeneral
BrandJUKI
ModelMH-484
CategorySewing Machine
LanguageEnglish

Summary

INTRODUCTION

MH-481

Details features of the MH-481 sewing machine model.

MH-484

Details features of the MH-484 sewing machine model.

HOW TO SET UP THE MACHINE

How to install the oil reservoir

Procedure for installing the oil reservoir into the machine table.

Motor pulley and the belt

Guidance on selecting the correct motor pulley and V-belt.

HOW TO OPERATE THE MACHINE

Cautions on operation

Essential safety warnings and operational guidelines.

Lubrication

Procedures for lubricating the sewing machine.

How to pass the needle thread

Step-by-step instructions for threading the needle.

How to pass the looper thread

Step-by-step instructions for threading the looper.

The thread tension

Instructions for adjusting the needle and looper thread tension.

Presser foot and feed dog

Adjusting the presser foot pressure and feed dog settings.

On stitch length

Method for adjusting the stitch length on the machine.

How to install the needle

Procedure for correctly installing the sewing machine needle.

ADJUSTING THE MACHINE

Adjusting the presser foot and the feed dog

Adjusting presser foot height and feed dog alignment.

On needle bar and needle

Adjusting needle bar height and needle positioning.

Matching the needle and the looper

Ensuring correct coordination between needle and looper.

On thread spreader

Instructions for adjusting the thread spreader mechanism.

Needle guard and loop guide

Adjusting the needle guard and loop guide positions.

On looper thread cam

Adjusting the timing of the looper thread cam.

On the position of the take-up thread tension lever

Adjusting the take-up thread tension lever position.

On the frame thread eyelet

Adjusting the frame thread eyelet for thread tension.

OPERATION AND ADJUSTMENT OF MH-484

Sliding type presser foot

Adjusting the specific sliding presser foot on the MH-484.

Stitch length adjustment

Adjusting stitch length specific to the MH-484 model.

Differential feed adjustment

Adjusting the differential feed mechanism for sewing.

Feed dog height

Adjusting the height of the feed dog.

Timing of the feed rocker cam

Adjusting the feed rocker cam timing for different stitches.

Gather sewing attachment

Information regarding attachments for gather sewing.

MAINTENANCE OF THE MACHINE

Daily machine inspection

Procedures for performing daily checks on the machine.

Weekly inspection points

Procedures for performing weekly checks on the machine.

MALFUNCTIONS & CORRECTIVE MEASURES

Thread breakage

Troubleshooting causes and solutions for thread breakage.

Skip-stitch

Troubleshooting causes and solutions for skip-stitch errors.

Stitches collapse

Troubleshooting causes and solutions for stitch collapse.

Looper thread skip-stitches

Troubleshooting looper thread skip-stitching.

One stitch collapses

Troubleshooting single stitch collapse issues.

Inadequate linking of loop

Troubleshooting inadequate loop linking problems.

Inadequate tightening of thread

Troubleshooting issues with thread tightening.

Needle breakage

Troubleshooting causes and solutions for needle breakage.

Puckering

Troubleshooting causes and solutions for fabric puckering.

Throat plate issues

Troubleshooting problems related to the throat plate.

Slipping of cloth

Troubleshooting causes and solutions for cloth slipping during sewing.

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