Video for repair & adjust Brother T-8421D series

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  • Disassembly and assembly should only be carried out by a qualified technician.
  • Carefully read the "SAFETY INSTRUCTION" here and the whole of the service manual to understand this product before you start maintenance.
  • HOW TO Adjust/Repair Thread Trimmer [Brother Twin Needle Sewing Machine]

    HOW TO Adjust/Repair Thread Trimmer [Brother Twin Needle Sewing Machine]

    This is manual how to adjust the thread trimmer of Brother's twin needle sewing machine T-8421D series. If you find a defective in your thread trimming mechanism, please try to adjust/repair/fix it following the steps in the video.

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