What causes poor seam finish on reverse side of Brother KE-434C material?
A poor seam finish on the reverse side of the material can be caused by: * The shuttle race thread guide not separating the threads sufficiently; adjust its position. * The upper thread not being properly tight; adjust the upper thread tension. * Uneven needle thread; adjust the sub-tension. * The needle thread being too long; adjust the thread take-up lever stroke.
What to do if my Brother KE-434C is skipping stitches?
If your Brother Sewing Machine is skipping stitches, it could be due to: * Too much clearance between the needle and rotary hook tip - adjust the needle clearance. * Incorrect needle and rotary hook timing - adjust the needle bar lift amount. * The driver contacting the needle too much - adjust the driver needle guard. * A bent needle - replace the needle. * The needle being installed incorrectly - install the needle correctly.
Why is my Brother Sewing Machine upper thread breaking?
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.
What to do if my Brother KE-434C 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.
What to do if the Brother KE-434C work clamp does not rise?
If the work clamp or button clamp does not rise, it could be due to: * Sluggish work clamp operation; grease the sliding part of the work clamp. * The work clamp (Button clamp) lift amount being too great; adjust the work clamp (button clamp) lift amount. * Too much friction between the work clamp plate and work clamp arm lever plate; grease them. * The work clamp contacting the thread wiper; adjust the position of the thread wiper.
What to do if inner clamping device does not operate in Brother KE-434C Sewing Machine?
If the inner clamping device does not operate, adjust the work clamp pressure so that the inner clamping device operates.
Why is the upper thread not trimming on my Brother Sewing Machine?
The upper thread may not be trimming on your Brother Sewing Machine because: * The movable knife is blunt - replace it. * The fixed knife is blunt - sharpen or replace it. * The movable knife does not pick up the thread - adjust the position of the shuttle race thread guide. * The movable knife does not pick up the thread because of skipped stitches at the sewing end - refer to “Skipped stitches occur”. * The movable knife position is incorrect - adjust the position of the movable knife. * The sub-tension is too weak - turn the sub-tension nut to adjust the tension.
What to do if the work clamp does not rise on my Brother KE-434C Sewing Machine?
If the work clamp on your Brother Sewing Machine does not rise, it could be due to: * Sluggish work clamp operation - grease the sliding part of the work clamp. * The work clamp lift amount being too great - adjust the height of the work clamp to within 17 mm (25 mm). * Too much friction between the presser plate and presser arm lever support - grease them. * The work clamp contacting the thread wiper - adjust the position of the thread wiper.
Why is my Brother 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.
How to adjust incorrect thread tightness on a Brother KE-434C Sewing Machine?
Incorrect thread tightness on your Brother Sewing Machine can be fixed by: * Adjusting the upper thread tension if it is too weak. * Adjusting the lower thread tension if it is too weak. * Adjusting the tension and height of the thread take-up spring if they are incorrect.
Defines safety indications and symbols used in the manual and on the machine for safe operation.
Details environmental conditions like temperature, humidity, and electrical noise for proper machine operation.
Provides safety instructions for installing the sewing machine, including electrical and physical safety.
Covers safety guidelines for sewing, cleaning, and maintenance operations, including general cautions.
Details hazardous voltage warnings, moving parts warnings, and safety device identification labels.
Covers high temperature warnings and direction of operation indicators.
Provides detailed specifications for the KE-434C and KE-435C sewing machines, including performance and capabilities.
Instructions for installing the power table and mounting the control box, including necessary dimensions and components.
Identifies lubrication points and provides instructions for filling oil tanks and applying oil to felt areas.
Explains the purpose and function of each button, indicator, and display on the operation panel.
Details the sequence of operations for preparing and starting the sewing machine.
Guides on setting the program number, X and Y scale, and sewing speed through the operation panel.
Details how to use the emergency stop switch and the thread wiper switch for safe and efficient operation.
Table and notes on selecting appropriate needles and threads for different materials and applications.
Instructions for replacing the bobbin case and detailed information on thread tension settings.
Detailed instructions on adjusting lower and upper thread tension for optimal sewing results.
Checks and preparations required before commencing sewing, including needle bar position.
Instructions for lubricating the machine, including filling oil tanks and applying oil to specific felt areas.
Lists error codes, their causes, and the corresponding remedies for troubleshooting machine malfunctions.
Lists further error codes, including those related to optional equipment, and their remedies.
Addresses problems like work clamp not rising/lowering, incorrect lift, and thread wiper malfunction.
Solutions for lower thread winding issues and thread unthreading problems.
Addresses skipped stitches, problems with thread trimming, thread jamming, and poor seam finish.
Solutions for incorrect thread tightness and issues preventing machine operation when power is applied.
General| Type | Electronic Sewing Machine |
|---|---|
| Built-in Free Arm | Yes |
| Speed Control | Yes |
| Automatic Needle Threader | Yes |
| Drop Feed | Yes |
| Needle | HAx1 |
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