HOW TO Adjust Lower Thread Trimmer 03[Brother HE-800C]

This is a manual on how to adjust the lower thread trimmer of Brother's buttonhole sewing machine HE-800C.
We would like to show the easy way to adjust the lower thread clamp opening timing.
When you have trouble at sewing start and finish please try following the steps in the video 01, 02, and 03, then you can solve the problem and use the buttonhole sewing machine to the full extent.
PREV→HOW TO Adjust Lower Thread Trimmer 01[Brother HE-800C]
• HOW TO Adjust Lower Th...
PREV→HOW TO Adjust Lower Thread Trimmer 02[Brother HE-800C]
• HOW TO Adjust Lower Th...
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* Disassembly and assembly should only be carried out by a qualified technician.
* Carefully read the "SAFETY INSTRUCTION" and the whole of the service manual to understand this product before you start maintenance.
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[@minhajulabedin9791]

It's very helpful technical video for mechanic.

[@mohamedmiladi2132]

Very good technical videos