How to fix uneven upper thread trailing length on Brother BAS-342G?
Uneven upper thread trailing length can result from: * Incorrect thread take-up spring tension and height; adjust the tension and height of the thread take-up spring. * Sub-tension being too weak; turn the sub-tension nut to adjust the tension. * The fixed knife not cutting cleanly; sharpen the fixed knife or replace it with a new one.
How to correct the lower thread winding amount on my Brother Sewing Machine?
If the lower thread winding amount is incorrect, adjust the position of the bobbin presser.
What to do if the work clamp doesn't lift to the maximum height on my Brother BAS-342G Sewing Machine?
If the work clamp doesn't lift to the maximum height, it may be because the cylinder joint position is incorrect; adjust the position of the cylinder joint.
Why does the lower thread wind to one side on my Brother BAS-342G?
If the lower thread winds to one side, it may be because the bobbin winder tension assembly height is incorrect; adjust the height of the bobbin winder tension assembly.
How to adjust the work clamp lift amount on a Brother BAS-342G Sewing Machine?
If the work clamp lift amount is incorrect, adjust the position of the work clamp lifter lever.
How to fix a thread wiper that doesn't operate correctly on a Brother BAS-342G Sewing Machine?
If the thread wiper isn't working correctly: * The thread wiper might be obstructing the needle; adjust the height of the thread wiper. * The thread wiper position is incorrect; adjust the stroke of the thread wiper.
What to do if the work clamp doesn't lift or drop on my Brother BAS-342G?
If the work clamp doesn't lift or drop, it could be because: * The work clamp moves stiffly; apply a suitable amount of grease to the sliding parts of the work clamp slider. * The air tube of the presser lifter cylinder is bent or damaged; straighten the bend in the tube or replace it.
Why is the upper thread not being trimmed on my Brother BAS-342G?
The upper thread may not be trimmed because: * The movable knife is not cutting cleanly; replace it with a new one. * The fixed knife is not cutting cleanly; sharpen it or replace it. * The movable knife is not picking up the upper thread; adjust the position of the shuttle race thread guide. * The movable knife position is incorrect; adjust its position. * The sub-tension is too weak; turn the sub-tension nut to adjust it.
What causes a poor stitch finish on the underside of the material with my Brother BAS-342G?
A poor stitch finish on the underside of the material can be due to: * The shuttle race thread guide not separating the threads enough; adjust its position. * Incorrect tightening of the upper thread; adjust the upper thread tension. * Uneven upper thread trailing length; adjust the sub-tension.
Why does the upper thread keep breaking on my Brother Sewing Machine?
The upper thread may break due to several reasons: * The upper thread tension might be too strong, so adjust it. * The needle might be incorrectly installed; ensure it is correctly installed. * The thread might be too thick for the needle; select a matching thread. * The thread take-up spring tension and height might be incorrect; adjust them. * There may be damage or burring on the rotary hook, needle hole plate, or needle; repair or replace the affected part. * If using synthetic thread, heat may be causing the breakage; use a cooling tank. * The thread might be threaded incorrectly; ensure it is threaded correctly.
General| Brand | Brother |
|---|---|
| Model | BAS-342G |
| Category | Sewing Machine |
| Language | English |
Explains the meanings of danger, caution indications, and various symbols used in the manual and on the machine.
Specifies ambient temperature, relative humidity, and electrical noise requirements for proper operation.
Details requirements for safe and proper installation, including grounding and cord securing.
General precautions for safe sewing operation, including wearing protective gear and turning off power.
Precautions for safe cleaning procedures, including using protective gear and turning off power.
Emphasizes qualified technicians for maintenance and disconnecting power before work.
Explains specific warning labels regarding high voltage, moving parts, hands in parts, and grounding.
Describes the process of removing machine head fixing bolts before installation.
Details how to install the control box, including checks for model compatibility and placement.
Explains the installation of the oil pan and support lever base components.
Guides on how to place the machine head onto the table, with safety notes.
Instructions for safely tilting and returning the machine head to its position, with safety precautions.
Details the procedure for installing the gas spring to support the machine head.
Steps for mounting the operation panel onto the sewing machine table.
Describes the installation of the solenoid valve assembly underneath the work table.
Guides on connecting the air tubes to the pneumatic system.
Instructions for connecting the air hose and opening the cock.
Explains how to adjust the air pressure using the regulator to 0.5 MPa.
Details how to adjust lifting and lowering speeds for the work clamp using valve knobs.
Step-by-step guide for connecting various electrical cords to the PC boards.
Emphasizes the importance of secure ground connections for safety and operation.
Instructions for securing cords and air tubes using holders and checking cord management.
Details the installation of the eye guard as a safety device.
Instructions for fitting and securing the cotton stand for thread supply.
Guidance on lubricating the sewing machine before first use and after periods of non-use.
Instructions for connecting the power cord to a grounded AC power supply.
Procedure to check the safety switch installation and correct it if necessary.
Step-by-step instructions for correctly installing the sewing needle, with safety warnings.
Explains how the two-pedal foot switch functions for starting and controlling the machine.
Detailed guide on how to thread the upper thread through the machine, including using threading mode.
Instructions for winding the lower thread onto the bobbin, including adjustments for winding amount.
Guides on how to correctly insert the bobbin case into the rotary hook.
Provides a reference for upper and lower thread tension settings.
Details how to adjust the lower thread tension to the weakest possible setting.
Explains how to adjust upper thread tension and trailing length.
Describes the procedure for performing home position detection for the machine.
How to configure the work clamp for two-step lowering operation.
Identifies and explains the function of each key and indicator on the operation panel.
Instructions for loading sewing data from a CF card into the machine's memory.
How to select and set the program number for sewing.
Guides on adjusting the X and Y scale settings for sewing patterns.
Explains how to set the sewing speed in RPM.
How to use test feed mode to verify needle movement and pattern accuracy.
Procedure to adjust the height setting for the intermittent presser foot.
Overview of advanced functions accessible via key combinations.
How to access and modify memory switch settings for various machine functions.
A comprehensive table detailing memory switch numbers, ranges, items, and initial values.
How to set and use the lower thread counter to prevent running out of thread.
Instructions for setting and using the production counter for tracking sewn items.
How to set split numbers for programs containing pauses or multiple sections.
How to record, use, and manage custom user programs with specific settings.
Instructions for creating and using cycle programs to sew patterns in a specific sequence.
Table showing key combinations for directly selecting user programs and cycle programs.
How to adjust the sewing pattern's position using parallel movement.
Steps to reinitialize memory data to restore default settings or clear specific data.
Important precautions for handling, storing, and using CF cards with the machine.
Explains the folder structure on a CF card for storing control programs and data.
Details how to switch to and use data read/write modes for CF cards.
Procedure for copying all sewing data from a CF card to the machine's internal memory.
Procedure for copying all sewing data from the machine's internal memory to a CF card.
Step-by-step guide on how to start and perform a sewing operation using the machine.
How to use the STOP switch to halt sewing and how to resume or clear the stop.
Explains the function of the thread wiper switch for on/off control.
Instructions for cleaning the rotary hook assembly, including removing the bobbin case.
Procedure for draining oil from the oiler when it becomes full.
How to check the regulator for water collection and drain it.
Guidance on cleaning air inlet ports of the control box using a vacuum cleaner.
Instructions for cleaning the eye guard with a soft cloth, avoiding solvents.
How to check the needle for damage or bending before sewing.
Refers to section 4-18 for lubrication instructions.
How to adjust the height and tension of the thread take-up spring for correct thread trailing.
How to adjust the position of the arm thread guide R for material type.
Procedure to adjust the needle bar height for correct alignment.
How to adjust the needle bar lift amount for proper needle and hook timing.
How to adjust the driver needle guard for correct needle contact.
How to adjust the clearance between the needle and the rotary hook.
Guidance on installing and positioning the shuttle race thread guide.
How to adjust the oil supply to the rotary hook for proper lubrication.
Procedure to adjust the position of the movable knife for thread trimming.
Steps for replacing the movable and fixed knives used for thread trimming.
How to install the feed plate correctly, aligning it with the index mark.
How to adjust the position and stroke of the thread wiper for proper operation.
How to set the correct installation position for the presser foot.
How to adjust the intermittent stroke by changing the position of the stepping clamp link.
How to adjust the maximum lift amount for the work clamp.
How to adjust the air pressure to 0.5 MPa using the regulator.
Lists error codes related to switch operations and their remedies.
Lists error codes related to the upper shaft motor and their remedies.
Lists error codes related to the feed mechanism and their remedies.
Lists error codes related to the work clamp and their remedies.
Lists error codes related to communication and memory issues and their remedies.
Lists error codes related to data editing and their remedies.
Lists error codes related to PC boards and their remedies.
Addresses common problems related to the work clamp's lifting and dropping functions.
Troubleshooting for the thread wiper not operating correctly.
Addresses problems with uneven lower thread winding and incorrect winding amounts.
Troubleshooting for thread slipping, uneven trailing length, and guide position.
Lists causes and remedies for upper thread breakage.
Lists causes and remedies for lower thread breakage.
Troubleshooting guide for skipped stitches.
Lists causes and remedies for needle breakage.
Addresses issues with needle deflection and appropriate needle selection.
Troubleshooting for thread jamming issues.
Addresses problems with the movable or fixed knife not trimming the upper thread.
Troubleshooting for poor stitch quality on the underside of the material.
Addresses issues with thread tension and trailing length.
Troubleshooting for the machine not starting, checking safety switch functionality.
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