Why does the thread come unthreaded on my Brother KE-430HS Sewing Machine?
The thread may come unthreaded because: * Stitches are being skipped at the sewing start. Refer to “Skipped stitches occur”. * The needle thread is uneven. Adjust the sub-tension. * The needle thread is too short. Use a thread nipper device.
What causes incorrect thread tightness in my Brother Sewing Machine?
Incorrect thread tightness can result from: * 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.
Why is the lower thread breaking on my Brother Sewing Machine?
The lower thread may break if: * The lower thread tension is too strong. 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 does the needle break on my Brother KE-430HS?
The needle may break because: * The needle is touching the shuttle hook. Adjust the needle clearance. * The needle bar lift amount needs adjustment. * 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 (BE-438HX/HS). Refer to “5-11. Checking the sewing pattern.”
What causes thread jamming in my Brother KE-430HS Sewing Machine?
Thread jamming can occur due to: * Incorrect thread take-up spring tension and height, so adjust them. * Incorrect needle and shuttle hook timing, so adjust the needle bar lift amount. * The shuttle race thread guide not separating the threads, so adjust its position.
What to do if the Brother Sewing Machine does not operate when turned on?
If the machine does not operate when powered on, check the following: * The machine head switch may not work. Check if the machine head switch cord is disconnected. * The position of the switching plate may need adjustment. * The machine head switch may be broken. Replace it if necessary.
What to do if my Brother KE-430HS skipped stitches?
Skipped stitches can occur if: * The clearance between the needle and the tip of the shuttle hook is too great. Adjust the needle clearance. * The needle and shuttle hook timing is incorrect. Adjust the needle bar lift amount. * The driver is contacting the needle more than necessary. Adjust the driver needle guard. * The needle is bent. Replace the needle. * The needle is installed incorrectly. Install the needle correctly.
General| Brand | Brother |
|---|---|
| Model | KE-430HS |
| Category | Sewing Machine |
| Language | English |
Critical safety warnings and precautions before disassembling the machine, emphasizing qualified technicians.
Critical safety warnings and precautions before assembling the machine, emphasizing qualified technicians.
Procedures for setting standard thread tension and adjusting upper/lower tensions for optimal sewing.
Critical safety warnings and precautions before performing maintenance procedures.
Procedures for applying grease and changing lubricating oil, including handling warnings.
Steps to reset the oil change counter after performing the oil change procedure.
Important precautions to take before identifying and resolving machine problems, including safety warnings.
Troubleshooting for thread breakage, skipped stitches, and uneven seams caused by various factors.
Critical safety warnings related to electrical components, high voltage, and handling during adjustments.
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