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General| Brand | Brother |
|---|---|
| Model | LH4-B814-2 |
| Category | Sewing Machine |
| Language | English |
Lists technical specifications for Brother LH4-B814 sewing machine models.
Explains the different stitch types (whip stitch, purl stitch) used by the machine.
Highlights the primary advantages and capabilities of the sewing machine.
Instructions for attaching the motor to the sewing machine base.
Steps for correctly mounting the sewing machine head onto the table.
Procedures for daily cleaning to maintain stitch quality and machine performance.
Guidance on selecting and correctly installing the needle for optimal sewing.
Recommendations for choosing and threading appropriate sewing threads.
Instructions for winding thread onto the bobbin for the lower thread.
Step-by-step guide on how to thread the bobbin case correctly.
How to adjust the tension of the lower thread for proper stitch formation.
Steps for correctly inserting the threaded bobbin case into the machine's hook.
How to start and operate the sewing machine safely and effectively.
Explanation of the cutter locking mechanism and its functions.
Instructions for using the emergency stop lever to halt the machine instantly.
How to use the manual feeding handle for precise adjustments or restarts.
Adjusting the upper thread tension for different stitch types (purl, whip).
Adjusting the take-up spring for tension and thread breakage detection.
How to synchronize the hook and needle for correct stitch formation.
Adjusting the buttonhole width and its placement on the fabric.
Adjusting needle swing, zigzag width, and tacking portions.
Setting the buttonhole length using the appropriate cutter.
How to select the correct number of stitches per buttonhole cycle.
Adjusting the cutter's position relative to the needle and needle plate.
How to adjust the upper thread trimming mechanism for proper function.
Guidance on replacing dull or defective lower thread trimmer knives.
Adjusting the thread breakage sensor for accurate detection.
How to adjust the tension release mechanism on the main tension regulator.
Adjusting the tension release on the lower tension regulator.
Procedures for adjusting the machine's automatic oiling system.
Troubleshooting steps for when the cutter damages itself or the material.
Instructions for installing the optional tape winder accessory.
Common causes and solutions for upper thread breakage.
Identifying and fixing issues causing skipped stitches.
Reasons for thread coming off the machine during operation.
Causes for inconsistent stitches at the start of sewing.
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