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Unicorn LS2-H5200 User Manual

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LS2-H520
/
LS2-H5200
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OPERATION MANUAL
PART BOOK

Table of Contents

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Unicorn LS2-H5200 Specifications

General IconGeneral
BrandUnicorn
ModelLS2-H5200
CategorySewing Machine
LanguageEnglish

Summary

Safety Instructions

Safety indications and their meanings

Explains safety indications and symbols used in the manual and on the machine.

Notes on safety

Installation

Guidelines for safe machine installation, including electrical and physical setup.

Operation

Safety precautions during machine operation, including handling parts and power.

Cleaning

Safety procedures to follow when cleaning the sewing machine.

Maintenance and inspection

Safety measures for performing maintenance and inspection on the machine.

Warning labels

Cautionary Marks and Labels

Explains various warning labels and their meanings on the sewing machine.

PRECAUTIONS BEFORE STARTING OPERATION

SPECIFICATIONS

How to install the belt

Step-by-step guide on how to properly install the machine's belt.

LUBRICATION

Lubrication

Instructions for filling and maintaining the machine's oil level.

Adjusting lubrication for upper shaft and rotary hook

Procedures for adjusting the oil flow to the upper shaft and rotary hook.

OPERATION

Pedal operation

Detailed instructions on how to use the sewing machine's foot pedal correctly.

Attaching the needle

Guide on the correct procedure for installing a sewing needle.

Threading the needle

Step-by-step instructions for threading the needle with thread.

Removing and attaching the bobbin

How to remove and insert the bobbin case and bobbin.

Winding the bobbin thread

Instructions for winding thread onto the bobbin.

Adjusting the thread tension

How to adjust the upper and lower thread tension for proper stitching.

Adjusting the stitch length

Guide for setting and adjusting the stitch length and reverse sewing.

MECHANICAL DESCRIPTION

Upper shaft and needle bar mechanism

Explanation of the upper shaft and needle bar components and their function.

Thread wiper

Description of the thread wiper mechanism and its operation.

ADJUSTMENT

Adjusting the needle bar height

Procedure to set the correct height of the needle bar.

Adjusting the rotary hook position

How to align the rotary hook with the needle for proper stitching.

Adjusting the rotary hook holder position

Adjusting the gap between the rotary hook and its holder.

Adjusting the feed timing

How to synchronize the feed dog movement with the needle.

Adjusting the needle feed

Procedures for adjusting the needle bar bracket and feed dog position.

Feed dog position

Adjusting the needle's entry point into the feed dog hole.

Needle feed amount adjustment

Adjusting the amount of needle feed for different materials.

Adjusting the thread trimming timing

How to set the timing for the thread trimming mechanism.

Thread trimming clutch position

Adjusting the position of the thread trimming clutch.

Adjusting the movable and fixed knives

Setting the overlap of the movable and fixed knives for thread cutting.

Adjusting the feed dog height and angle

Adjusting the height and angle of the feed dog for optimal material feeding.

Adjusting the forward and backward stitch lengths

How to ensure equal forward and backward stitch lengths.

Adjusting the synchronizer

Adjusting the needle stop position for the synchronizer.

Removing the fixed knife

Step-by-step instructions for removing the fixed knife.

Removing the movable knife

Step-by-step instructions for removing the movable knife.

TROUBLESHOOTING GUIDE

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