What causes incorrect work clamp lift amount on Brother BE-438B?
An incorrect work clamp lift amount or button clamp lift amount can be caused by: * Incorrect position of the work clamp arm lever plate (button clamp holder hook assembly); adjust the work clamp (button clamp) lift amount. * Incorrect position of the work clamp arm lever; adjust the work clamp (button clamp) lift amount.
What to do if my Brother 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.
How to fix Brother BE-438B 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.
Why is the thread coming unthreaded on my Brother BE-438B Sewing Machine?
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.
Why is my Brother BE-438B 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.
What to do if Brother 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.
What to do if inner clamping device does not operate in Brother BE-438B?
If the inner clamping device does not operate, adjust the work clamp pressure so that the inner clamping device operates.
What to do if Brother Sewing Machine work clamp does not close?
If the work clamp does not close, check whether the stop lever is engaged with the stop position adjusting plate or not, and adjust the position of the presser closing roller.
What to do if the Brother BE-438B Sewing Machine 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.
How to fix Brother BE-438B Sewing Machine when upper thread is not trimmed?
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.
Explains the meaning of safety indications and symbols used on the machine.
Details safe operating conditions regarding environment, temperature, and humidity.
Provides safety guidelines for installing the sewing machine.
Lists and identifies key safety devices on the sewing machine.
Indicates the direction of operation for machine components.
Details the procedure for adjusting the needle bar height for proper sewing.
Explains how to adjust the needle bar lift for optimal thread take-up.
Provides steps for adjusting the thread wiper mechanism for correct thread cutting.
Outlines the process for setting the machine's home position for X and Y axes.
Describes the components and function of the needle bar and thread take-up systems.
Explains the lower shaft and shuttle race mechanisms and their operation.
Details the components and function of the work clamp lifter mechanism.
Describes the mechanism responsible for opening and closing the work clamp.
Explains the components and operation of the thread wiper system.
Describes the X and Y movements of the feed mechanism for pattern creation.
Details the components and function of the thread trimming mechanism.
Explains the operation of the thread nipper mechanism for thread control.
Describes the components and function of the thread take-up mechanism.
Instructions for removing and disassembling the machine's covers.
Details the disassembly steps for the work clamp arm on specific models.
Details the disassembly steps for the work clamp arm on specific models.
Details the disassembly steps for the work clamp arm on specific models.
Details the disassembly steps for the work clamp arm on specific models.
Details the disassembly steps for the work clamp arm on specific models.
Explains the disassembly and components of the shuttle hook mechanism.
Details the disassembly and components of the needle bar mechanism.
Details the disassembly steps for the stepping foot mechanism on specific models.
Explains the disassembly and components of the upper shaft mechanism.
Details the disassembly and components of the lower shaft mechanism.
Details the disassembly steps for the feed mechanism, part 1.
Details the disassembly steps for the feed mechanism, part 2.
Details the disassembly steps for the work clamp lifter (solenoid).
Details the disassembly steps for the work clamp lifter on specific models.
Details the disassembly steps for the stepping foot lifter on specific models.
Details the disassembly steps for the thread wiper mechanism.
Provides disassembly details for stepping foot specifications.
Details the disassembly steps for the thread nipper mechanism.
Details the disassembly steps for the thread take-up mechanism.
Details the disassembly steps for the thread trimmer mechanism.
Instructions for assembling the thread trimmer mechanism, part 1.
Instructions for assembling the thread nipper mechanism.
Instructions for assembling the thread wiper mechanism.
Instructions for assembling the work clamp lifter (solenoid).
Instructions for assembling the work clamp lifter on specific models.
Instructions for assembling the thread take-up mechanism.
Instructions for assembling the feed mechanism, part 1.
Instructions for assembling the feed mechanism, part 2.
Instructions for assembling the upper shaft mechanism.
Instructions for assembling the stepping foot mechanism on specific models.
Instructions for assembling the feed mechanism, part 2.
Instructions for assembling the upper shaft mechanism.
Instructions for assembling the stepping foot lifter on specific models.
Instructions for assembling the needle bar mechanism.
Instructions for assembling the lower shaft mechanism.
Instructions for assembling the thread trimmer mechanism, part 2.
Instructions for assembling the shuttle hook mechanism.
Instructions for assembling the work clamp arm on specific models.
Instructions for assembling the work clamp arm on specific models.
Instructions for assembling the work clamp arm on specific models.
Instructions for assembling the work clamp arm on specific models.
Instructions for assembling the work clamp arm on specific models.
Instructions for assembling the work clamp arm on specific models.
Guidance on applying grease to the work clamp arm mechanism.
Instructions for reassembling the machine's covers.
Instructions for assembling auxiliary plate supports and related parts.
Details the procedure for adjusting the driver needle guard.
Explains how to adjust the clearance between the needle and rotary hook.
Provides instructions for adjusting the shuttle race thread guide.
Details adjustment for shuttle hook and bobbin case holder clearance for a specific model.
Details how to adjust work clamp lift amount for specific models.
Details how to adjust work clamp lift amount for specific models.
Details how to adjust work clamp lift amount for specific models.
Details how to adjust button clamp lift amount for specific models.
Provides steps for adjusting work clamp pressure on specific models.
Details how to adjust holding pressure on specific models.
Provides steps for adjusting work clamp closing distance on specific models.
Details how to adjust the button holder position on specific models.
Details how to adjust work clamp on specific models.
Explains how to change the work clamp lift amount on specific models.
Provides steps for adjusting the thread wiper mechanism.
Details thread wiper adjustment for pneumatic specifications.
Details thread wiper adjustment for stepping foot specifications.
Details thread wiper adjustment for the KE-484C model.
Explains how to adjust the thread take-up amount for various models.
Details the procedure for adjusting the movable knife.
Steps for replacing and adjusting movable/fixed knives for specific series.
Steps for replacing and adjusting movable/fixed knives for specific models.
Steps for replacing and adjusting movable/fixed knives for the KE-484C model.
Explains how to adjust the engagement between movable and fixed knives.
Details the procedure for adjusting the thread trimming link mechanism.
Explains how to adjust backlash in gears and shafts.
Details the adjustment of the presser solenoid position for solenoid specifications.
Details the adjustment of the sensor perceive plate for solenoid specifications.
Outlines the process for setting the machine's home position for X and Y axes.
Describes the features of the two-pedal foot switch.
Describes the features of the two-step foot switch.
Describes the solenoid thread wiper as an optional part.
Describes the work clamp set QC for KE-430* models.
Describes the liquid cooling tank for preventing thread breakage.
Describes the three-pedal foot switch for pneumatic machines.
Describes the function of the emergency stop switch.
Describes the work clamp plate OT for KE-435*, 436* models.
Describes the thread breakage detector for KE-436* models.
Describes the 2-step thread tension device for KE-436* models.
Describes the needle cooler for KE-436* models.
Describes the air wiper for KE-436* models.
Describes the programmer for KE-436* models.
Describes the PS-3000 software for creating sewing patterns.
Safety precautions to observe when working with the control box.
Overview of components within the control box and operation panel.
Details the types and functions of fuses used in the machine.
Information regarding the machine's various connectors.
Illustrates the locations of connectors on the control box and main circuit board.
Explains the function of DIP switches on the operation panel.
Details DIP switch settings for various machine models.
Details DIP switch settings for KE-436B/436C models.
Explains the function of DIP switches located inside the control box.
Explains memory switch settings for various machine models.
Explains memory switch settings for KE-436B/436C models.
Lists memory switch functions and their settings for 00-0F range.
Lists memory switch functions and their settings for 20-2F range.
Lists memory switch functions and their settings for 30-3F range.
Explains how to set the work clamp mode using DIP switches and memory switches.
Details the operation and setup of the light work clamp feature.
Guides on checking input sensors and DIP switch status.
Details how to check the machine's input voltage.
Procedure for clearing all memory settings and resetting the machine.
Explains how to confirm the machine's software version.
Lists error codes, their causes, and remedies for machine malfunctions.
A step-by-step guide to troubleshoot machine issues.
Detailed solutions and measures for common machine problems.
Troubleshooting steps for when the power indicator does not light.
Troubleshooting steps for errors appearing on the display window.
Troubleshooting steps for errors related to foot switch operation.
Troubleshooting steps for when the work clamp fails to rise.
Troubleshooting steps for when the work clamp fails to lower.
Troubleshooting steps for when the test indicator does not light.
Troubleshooting steps for slow feed mechanism movement during test sewing.
Troubleshooting steps for incorrect operation based on the set program.
Troubleshooting steps for machine stoppage during sewing with error E-20.
Troubleshooting steps for error codes appearing after machine operation.
Troubleshooting steps for when the machine fails to produce correct stitches.
Troubleshooting steps for when the thread trimmer fails to operate.
Troubleshooting steps for when the thread take-up lever does not operate.
Troubleshooting steps for when the machine fails to stop the needle at the upper position.
Troubleshooting steps for when programming functions are unavailable.
A schematic diagram illustrating the control circuit connections.
General| Brand | Brother |
|---|---|
| Model | BE-438B |
| Category | Sewing Machine |
| Language | English |
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