Brother KE-484C User Manual (English)

Other manuals for Brother KE-484C

Service Manual198 pages

Parts Manual71 pages

Parts List1 page

Questions and Answers:

C
Carla LopezAug 21, 2025
Why is my Brother KE-484C Sewing Machine upper thread breaking?
- S
  Steven TurnerAug 21, 2025
  There are several reasons why the upper thread might be breaking: * The upper thread tension may be too strong, so you should adjust it. * The needle might be installed incorrectly; make sure it is installed correctly. * The thread might be too thick for the needle; use the correct thread for the needle. * The thread take-up spring tension and height could be incorrect; adjust them. * The rotary hook, needle hole plate, or needle might be damaged; file smooth or replace the part. * If using synthetic thread, it might be melting; use a thread cooling device.
M
Michael CarneyAug 22, 2025
What to do if my Brother KE-484C skips stitches?
- B
  bethany18Aug 23, 2025
  Skipped stitches can occur for several reasons: 1. The clearance between the needle and rotary hook tip might be too great; adjust the needle clearance. 2. The needle and rotary hook timing could be incorrect; adjust the needle bar lift amount. 3. The driver might be contacting the needle too much (except KE-484C); adjust the driver needle guard. 4. The needle could be bent; replace it. 5. The needle might be installed incorrectly; install it correctly. 6. The needle thread might be too short; adjust the thread take-up lever stroke.
C
cmarksAug 25, 2025
How to fix Brother Sewing Machine when needle breaks?
- S
  Sarah BuckleyAug 25, 2025
  A needle can break for the following reasons: * The needle is touching the rotary hook; adjust the needle clearance. * The needle is bent; replace the needle. * The needle is too thin; use the correct needle for the material. * The needle is striking the button; refer to “6. CHECKING THE SEWING PATTERN” in the Instruction Manual.
C
Cheryl BrownAug 26, 2025
Why is the thread coming unthreaded on my Brother KE-484C?
- A
  Alexander GriffinAug 27, 2025
  The thread may come unthreaded due to: * Stitches being skipped at the sewing start; refer to “Skipped stitches occur”. * Uneven needle thread; adjust the sub-tension. * The needle thread being too short; adjust the thread take-up lever stroke.
J
jonathanhernandezAug 27, 2025
Why is my Brother KE-484C lower thread breaking?
- L
  lisa82Aug 28, 2025
  The lower thread may break because: * The lower thread tension is too strong, so adjust the lower thread tension. * The corners of the needle hole plate or bobbin case are damaged; file smooth or replace the affected part.
C
Christopher EdwardsAug 29, 2025
What to do if Brother Sewing Machine thread is jamming?
- J
  Joshua FergusonAug 29, 2025
  Thread jamming can occur if: * The thread take-up spring tension and height are incorrect; adjust them. * The needle and rotary hook timing are incorrect; adjust the needle bar lift amount. * The shuttle race thread guide is not separating the threads; adjust its position.
D
Donald VargasAug 31, 2025
How to adjust incorrect thread tightness on Brother Sewing Machine?
- L
  Lori LeeAug 31, 2025
  Incorrect thread tightness can be due to: * Upper thread tension being too weak; adjust the upper thread tension. * Lower thread tension being too weak; adjust the lower thread tension. * Thread take-up spring tension and height being incorrect; adjust the tension and height of the thread take-up spring.
S
Susan ScottSep 2, 2025
How to adjust lower thread winding amount on Brother Sewing Machine?
- J
  Joseph DouglasSep 2, 2025
  If the lower thread winding amount is incorrect, adjust the position of the bobbin presser.
F
foleyrebeccaSep 3, 2025
What to do if Brother KE-484C does not operate when turned on?
- M
  Martha PonceSep 3, 2025
  If the machine does not operate when the power is turned on and the foot switch is depressed: * Check if the head position switch cord is disconnected. * Adjust the position of the switching plate. * Replace the head position switch if it is broken.
R
Ryan LopezSep 5, 2025
How to fix Brother KE-484C when upper thread is not trimmed?
- S
  Samantha HerreraSep 5, 2025
  If the upper thread is not being trimmed, it could be due to: * A blunt movable knife; replace it. * A blunt fixed knife; sharpen or replace it. * The movable knife not picking up the thread; adjust the position of the shuttle race thread guide. * Skipped stitches at the sewing end preventing the movable knife from picking up the thread; refer to “Skipped stitches occur”. * An incorrect movable knife position; adjust it. * Sub-tension being too weak; turn the sub-tension nut to adjust the tension.

Brother KE-484C Specifications

General

Brand	Brother
Model	KE-484C
Category	Sewing Machine
Language	English

Summary

SAFETY INSTRUCTIONS

1. Safety Indications and Their Meanings

Explains DANGER and CAUTION indications and their meanings for safe operation.

2. Notes on Safety

Provides essential safety notes and precautions for operating the machine.

Sewing Safety Precautions

Safety precautions specific to the sewing operation of the machine.

Cleaning Safety Precautions

Safety precautions to be followed during the cleaning process.

Maintenance and Inspection Safety

Safety guidelines for performing maintenance and inspection.

Warning Labels

Identification of Warning Labels

Identifies and explains various warning labels found on the sewing machine.

Machine Parts and Specifications

1. Name of Each Part

Identifies and lists all major parts of the sewing machine.

2. Specifications Overview

Details the technical specifications of the KE-484C sewing machine.

2-1. Detailed Specifications

Provides a detailed list of technical specifications for the machine.

Installation Guide

3. Installation Overview

Guides the user through the process of installing the sewing machine.

3-1. Power Table Setup

Instructions for installing the power table for the sewing machine.

3-2. Control Box Installation

Step-by-step instructions for installing the control box.

3-3. Rubber Cushions Installation

Details how to install the rubber cushions.

3-4. Oil Pan Installation

Instructions for installing the oil pan.

3-5. Cushion Installation

Describes the process of installing the cushions.

3-6. Switching Plate Installation

Guide to installing the switching plate for safety.

3-7. Machine Head Installation

Instructions for mounting the machine head onto the table.

3-8. Head Rest Installation

Steps for installing the head rest.

3-9. Operation Panel Installation

How to install the operation panel on the work table.

3-10. Ground Wire Connection

Proper procedure for connecting the ground wire for safety.

3-11. Cord Connection

Detailed steps for connecting various cords and connectors.

3-12. Piping and Air Unit Installation

How to connect air tubes and install the air unit.

3-12-2. Speed Controller Adjustment

How to adjust the speed controller for various devices.

3-13. Belt Cover Installation

Steps for installing the belt cover.

3-14. Foot Switch Installation

Instructions for installing the foot switch.

3-15. Needle Sub Plate Installation

How to install the needle sub plate.

3-16. Spool Stand Installation

Guide to assembling and installing the spool stand.

3-17. Eye Guard Installation

Instructions for installing the eye guard safety device.

Lubrication Procedures

4. Lubrication Overview

Details the lubrication points and procedures for the machine.

4-1. Lubrication Points Identification

Identifies specific points requiring lubrication.

Operation Guide

5. Operation Overview

General information on operating the sewing machine.

5-1. Operation Panel Functions

Explains the function of each button and indicator on the operation panel.

5-2. Operating Procedure

Outlines the step-by-step procedure for operating the machine.

5-3. Foot Switch Operation

Explains how to use the foot switch to control the machine.

5-4. Emergency Stop Switch Operation

Instructions for using the emergency stop switch.

5-5. Thread Wiper Switch Operation

How to operate the thread wiper switch.

6. Checking the Sewing Pattern

Procedure for checking the sewing pattern using feed mechanism operation.

Correct Use and Threading

7-1. Installing the Needle

Step-by-step guide for correctly installing the needle.

7-2. Threading the Upper Thread

Instructions for threading the upper thread correctly.

7-3. Winding the Lower Thread

Detailed steps for winding the lower thread onto the bobbin.

7-4. Replacing Bobbin Case and Threading

How to replace the bobbin case and thread it properly.

Thread Tension and Adjustment

Guides on setting and adjusting thread tension and related components.

Sewing Operations

8. Sewing Procedure

Instructions and procedures for sewing with the machine.

Maintenance and Inspection

9. Maintenance and Inspection Overview

Guidelines for maintaining and inspecting the sewing machine.

9-1. Needle Check

How to check the needle for damage or bending.

9-2. Rotary Hook Cleaning

Steps for cleaning the rotary hook assembly.

9-3. Lubrication Steps

Details on lubricating different parts of the machine.

9-4. Draining the Oil

Procedure for draining and managing waste oil.

9-5. Control Box Air Inlet Cleaning

How to clean the air inlet port of the control box.

9-6. Air Hole Cleaning

Cleaning air holes in the belt and frame side covers.

9-7. Eye Guard Cleaning

Instructions for cleaning the eye guard.

Standard Adjustments

10. Standard Adjustments Overview

Procedures for standard adjustments on the sewing machine.

10-1. Needle Bar Height Adjustment

How to adjust the height of the needle bar.

10-2. Needle Bar Lift Amount Adjustment

Steps to adjust the needle bar lift amount.

10-3. Needle Clearance Adjustment

How to adjust the clearance between the needle and rotary hook.

10-4. Thread Take-up Amount Adjustment

Procedure for adjusting the thread take-up amount.

10-5. Movable Knife Adjustment

How to adjust the movable knife for proper cutting.

10-5-1. Knife Replacement

Steps for replacing the movable and fixed knives.

10-5-2. Knife Engagement Adjustment

How to adjust the engagement between the movable and fixed knives.

10-6. Work Clamp Lift Amount Adjustment

Procedure to adjust the work clamp lift amount.

10-7. Work Clamp Interchangeability

Information on interchanging different work clamps.

10-8. Needle Up Stop Position Adjustment

How to adjust the needle's stop position.

10-9. Thread Wiper Adjustment

How to adjust the thread wiper mechanism.

10-10. Air Pressure Adjustment

Procedure for adjusting the air pressure.

10-11. Sensor and DIP Switch Check

How to check input sensors and DIP switch settings.

10-12. Input Voltage Check

Procedure to check the input voltage.

10-13. Clearing Memory Settings

How to clear all memory settings and reset the machine.

10-14. Moving Stitch Patterns

How to move stitch patterns for repositioning.

Counters

11. Using the Counters Overview

How to use the bobbin thread and production counters.

11-1. Bobbin Thread Counter Usage

Guide to setting and using the bobbin thread counter.

11-2. Production Counter Usage

How to display and use the production counter.

DIP Switches and User Programs

12. Changing Functions Using DIP Switches

How to change machine functions using DIP switches.

12-1. Operation Panel DIP Switches

Explains DIP switches located on the operation panel.

12-2. Control Box DIP Switches

Details DIP switches found inside the control box.

12-3. Using User Programs

How to record and use custom user programs.

Special Functions and Memory Switches

13. Changing Special Functions Overview

How to modify special functions via memory switches.

Memory Switches 00 - 0F

Details memory switches 00 to 0F and their functions.

Memory Switches 10 - 1F

Explains memory switches 10 to 1F and their effects.

Memory Switches 30 - 4F

Covers memory switches 30 to 4F and their configurable values.

13-1. Cycle Sewing Function

How to program and use the cycle sewing function.

Work Clamp Mode Settings

14. Setting the Work Clamp Mode Overview

How to set and configure work clamp modes.

14-1. Light Work Clamp Mode

Instructions for setting up and using the light work clamp mode.

Error Codes

15. Table of Error Codes

Lists common error codes and their remedies.

Troubleshooting

16. Troubleshooting Guide

General troubleshooting guide for common problems.

Work Clamp Issues

Solutions for work clamp related problems like rising or lift amount.

Thread Winding and Breakage Issues

Troubleshooting for lower thread winding and thread breakage.

Skipped Stitches and Needle Problems

How to fix skipped stitches and needle related issues.

Thread Trimming and Jamming Issues

Troubleshooting for thread trimming and jamming problems.

Seam Finish and Machine Operation Issues

Solutions for poor seam finish and machine operation errors.

Machine Operation When Powered On

Troubleshooting steps for machine not operating after power on.

Optional Parts

17. Optional Parts Overview

Lists optional parts available for the sewing machine.

Three-Pedal Foot Switch

Details the features of the three-pedal foot switch.

Related product manuals

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Brother KE-484C User Manual

Table of Contents

Other manuals for Brother KE-484C

Questions and Answers:

Brother KE-484C Specifications

Summary

SAFETY INSTRUCTIONS

1. Safety Indications and Their Meanings

2. Notes on Safety

Sewing Safety Precautions

Cleaning Safety Precautions

Maintenance and Inspection Safety

Warning Labels

Identification of Warning Labels

Machine Parts and Specifications

1. Name of Each Part

2. Specifications Overview

2-1. Detailed Specifications

Installation Guide

3. Installation Overview

3-1. Power Table Setup

3-2. Control Box Installation

3-3. Rubber Cushions Installation

3-4. Oil Pan Installation

3-5. Cushion Installation

3-6. Switching Plate Installation

3-7. Machine Head Installation

3-8. Head Rest Installation

3-9. Operation Panel Installation

3-10. Ground Wire Connection

3-11. Cord Connection

3-12. Piping and Air Unit Installation

3-12-2. Speed Controller Adjustment

3-13. Belt Cover Installation

3-14. Foot Switch Installation

3-15. Needle Sub Plate Installation

3-16. Spool Stand Installation

3-17. Eye Guard Installation

Lubrication Procedures

4. Lubrication Overview

4-1. Lubrication Points Identification

Operation Guide

5. Operation Overview

5-1. Operation Panel Functions

5-2. Operating Procedure

5-3. Foot Switch Operation

5-4. Emergency Stop Switch Operation

5-5. Thread Wiper Switch Operation

6. Checking the Sewing Pattern

Correct Use and Threading

7-1. Installing the Needle

7-2. Threading the Upper Thread

7-3. Winding the Lower Thread

7-4. Replacing Bobbin Case and Threading

Thread Tension and Adjustment

Sewing Operations

8. Sewing Procedure

Maintenance and Inspection

9. Maintenance and Inspection Overview

9-1. Needle Check

9-2. Rotary Hook Cleaning

9-3. Lubrication Steps

9-4. Draining the Oil

9-5. Control Box Air Inlet Cleaning

9-6. Air Hole Cleaning

9-7. Eye Guard Cleaning

Standard Adjustments

10. Standard Adjustments Overview

10-1. Needle Bar Height Adjustment

10-2. Needle Bar Lift Amount Adjustment

10-3. Needle Clearance Adjustment

10-4. Thread Take-up Amount Adjustment

10-5. Movable Knife Adjustment

10-5-1. Knife Replacement

10-5-2. Knife Engagement Adjustment

10-6. Work Clamp Lift Amount Adjustment

10-7. Work Clamp Interchangeability

10-8. Needle Up Stop Position Adjustment

10-9. Thread Wiper Adjustment

10-10. Air Pressure Adjustment