To Next PageTo Next PageWhat to do if Brother KE-434B does not operate when turned on?
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.
How to adjust lower thread winding amount on Brother KE-434B Sewing Machine?
If the lower thread winding amount is incorrect, adjust the position of the bobbin presser.
How to adjust incorrect thread tightness on Brother Sewing Machine?
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.
What to do if Brother KE-434B Sewing Machine thread is jamming?
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.
Why is my Brother KE-434B Sewing Machine lower thread breaking?
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.
Why is the thread coming unthreaded on my Brother KE-434B?
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.
How to fix Brother KE-434B Sewing Machine when needle breaks?
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.
What to do if my Brother KE-434B Sewing Machine skips stitches?
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.
General| Brand | Brother |
|---|---|
| Model | KE-434B |
| Category | Sewing Machine |
| Language | English |
Explains the meaning of safety indications and symbols used on the machine.
Details environmental conditions required for optimal machine operation and safety.
Provides instructions and precautions for the safe and proper installation of the sewing machine.
Covers safety precautions related to the sewing operation itself.
Outlines safety procedures and precautions to be followed during the cleaning of the sewing machine.
Details safety guidelines for performing maintenance and inspection on the sewing machine.
Provides detailed technical specifications for various sewing machine models.
Details standard thread tension settings for different materials and machine models.
Explains how to measure and check thread tensions for optimal sewing.
Describes the mechanical components of the needle bar and thread take-up systems.
Explains the mechanical workings of the lower shaft and shuttle race.
Details the mechanical assembly and operation of the work clamp lifter.
Describes the mechanism for opening and closing the work clamp on specific models.
Explains the mechanical operation of the thread wiper.
Details the mechanical components responsible for the X and Y feed movements.
Explains the mechanical operation of the thread trimming system.
Describes the mechanical components and function of the thread nipper mechanism.
Explains the mechanical operation of the thread take-up mechanism.
Instructions for disassembling the various covers of the sewing machine.
Step-by-step guide for disassembling the work clamp arm mechanism for specific models.
Step-by-step guide for disassembling the work clamp arm mechanism for KE-432B/432C.
Step-by-step guide for disassembling the work clamp arm mechanism for KE-433B.
Disassembly instructions for the work clamp arm mechanism on multiple models.
Disassembly procedure for the work clamp arm mechanism on BE-438B/438C models.
Step-by-step guide for disassembling the shuttle hook mechanism.
Instructions for disassembling the needle bar mechanism.
Disassembly procedure for the stepping foot mechanism on specific models.
Step-by-step instructions for disassembling the upper shaft mechanism.
Instructions for disassembling the lower shaft mechanism.
Part one of the feed mechanism disassembly instructions.
Part two of the feed mechanism disassembly instructions.
Disassembly instructions for the work clamp lifter for solenoid specifications.
Disassembly procedure for the stepping foot lifter mechanism on specific models.
Disassembly instructions for the thread wiper mechanism.
Step-by-step guide for disassembling the thread nipper mechanism.
Instructions for disassembling the thread take-up mechanism.
Step-by-step instructions for disassembling the thread trimmer mechanism.
Part one of the thread trimmer mechanism assembly instructions.
Instructions for assembling the thread nipper mechanism.
Procedure for assembling the thread wiper mechanism.
Instructions for assembling the thread take-up mechanism.
Assembly instructions for the work clamp lifter for solenoid specifications.
Part one of the feed mechanism assembly instructions.
Part two of the feed mechanism assembly instructions.
Step-by-step instructions for assembling the upper shaft mechanism.
Assembly procedure for the stepping foot lifter mechanism on specific models.
Assembly instructions for the stepping foot mechanism on specific models.
How to adjust the lowest point of the presser foot.
Instructions for assembling the needle bar mechanism.
Step-by-step guide for assembling the lower shaft mechanism.
Part two of the thread trimmer mechanism assembly instructions.
Instructions for assembling the shuttle hook mechanism.
Step-by-step guide for assembling the work clamp arm mechanism for specific models.
Assembly instructions for the work clamp arm mechanism on KE-432B/432C models.
Step-by-step guide for assembling the work clamp arm mechanism for KE-433B.
Assembly instructions for the work clamp arm mechanism on multiple models.
Assembly procedure for the work clamp arm mechanism on BE-438B/438C models.
Guidance on applying grease to work clamp arm mechanisms for smooth operation.
Instructions for reassembling the various covers of the sewing machine.
Explains how to adjust the vertical position of the needle bar for optimal sewing.
Details the procedure for adjusting the amount of vertical movement of the needle bar.
Instructions for adjusting the driver needle guard to prevent contact with the needle.
Explains how to set the correct clearance between the needle and the rotary hook.
Procedure for adjusting the shuttle race thread guide for proper thread handling.
Specific adjustment for KE-484C regarding clearance between shuttle hook and bobbin case holder.
How to adjust the vertical lift of the work clamp for specific models.
How to adjust the vertical lift of the work clamp for KE-432B/432C models.
How to adjust the vertical lift of the work clamp for various other models.
How to adjust the vertical lift of the button clamp for BE-438B/438C models.
Procedure to adjust the pressure applied by the work clamp on KE-432B/432C models.
How to adjust the holding pressure for BE-438B/438C models.
Adjusting the distance the work clamp closes on KE-432B/432C models.
How to adjust the position of the button holder for BE-438B/438C models.
General work clamp adjustment for KE-435B/435C/436B/436C models.
How to change the work clamp lift amount for specific models.
Procedure to adjust the thread wiper for optimal performance.
How to adjust the thread take-up amount for proper thread feeding.
Instructions for adjusting the movable knife for clean thread trimming.
Step-by-step guide for replacing the movable and fixed knives for multiple models.
Instructions for replacing the movable and fixed knives for specific models.
Procedure for replacing the movable and fixed knives for the KE-484C model.
How to adjust the engagement of the movable and fixed knives for proper cutting.
Adjusting the thread trimming link mechanism for correct operation.
How to adjust backlash in various mechanisms for smooth operation.
Adjusting the position of the presser solenoid for solenoid-equipped models.
Adjusting the sensor perceive plate for solenoid models.
Procedure to set the machine's home position for X and Y axes.
How to set the needle to stop at the correct upper position.
Adjusting the tension of the upper shaft timing belt for proper power transmission.
Verifying the correct operation and position of the head position switch.
Information on using work clamps interchangeably with KE-433B.
Details on interchangeable work clamps for various models.
How to adjust air pressure for pneumatic systems.
Adjustment procedures for the inner clamping device.
Description of the two-pedal foot switch option for enhanced operator control.
Details the two-step foot switch option, a pedal-type control.
Describes the solenoid thread wiper option for independent thread wiping.
Optional work clamp set for easy replacement and adjustment.
Optional liquid cooling tank to prevent thread breakage due to heat.
Optional three-pedal foot switch for pneumatic models with independent clamp control.
Optional emergency stop switch for immediate machine halt.
Optional work clamp plate for even clamping and easy part replacement.
Optional detector to warn of thread breakage, activating emergency stop.
Optional device to switch upper thread tension via programmer settings.
Optional pneumatic needle cooler to prevent thread breakage from heat.
Optional air-driven thread wiper for difficult-to-pull threads.
Software for creating new sewing patterns using a PC.
Safety precautions to observe when opening the control box for maintenance.
Brief explanation of the main components within the control box and operation panel.
Details the different types of fuses, their part codes, and when they might blow.
Information about connectors and the importance of proper connection for troubleshooting.
Troubleshooting guide for problems related to connector contact failures.
Explains the function of DIP switches on the operation panel for various models.
Details the functions of DIP switches on the operation panel for specific machine models.
Explains the function of DIP switches on the operation panel for KE-436B/436C models.
Explains the function of DIP switches located inside the control box.
Explains the function and settings of memory switches on the operation panel for various models.
Explains the function and settings of memory switches for KE-436B/436C models.
How to set the work clamp mode using DIP switches and memory switches.
Instructions for using the light work clamp feature, including hose connections.
Procedure to check input sensor status and DIP switch input on the operation panel.
How to check the input voltage to the sewing machine via the operation panel.
Procedure to clear all memory settings and reset the machine to factory defaults.
How to check the software version of the machine's internal PROMs.
A comprehensive list of error codes, their causes, and remedies for troubleshooting.
General troubleshooting information for machine issues.
A visual guide to diagnose and resolve machine problems based on symptoms.
Detailed solutions and measures for specific problems identified in the troubleshooting flowchart.
A block diagram illustrating the control circuit connections of the sewing machine.
