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General| Brand | Husqvarna |
|---|---|
| Model | 6170 |
| Category | Sewing Machine |
| Language | English |
Overview of the Viking sewing machine for technicians, covering various technical aspects and procedures.
Explanation of the Viking Husqvarna shuttle system, its construction, and operation with the needle.
Description of the lower thread tension, controlled by a spring on the bobbin case, and factors affecting it.
Details on adjusting the upper thread tension device, including tension discs, springs, and washers.
Description of power transmission via V-belt, reduction gear, and electric speed regulation methods.
Procedures for aligning and centering the feed teeth, including requirements and comments on potential damage.
Instructions for setting the correct needle to hook clearance, essential for proper stitch formation.
Requirements and adjustment procedures for the upper main shaft to ensure free rotation without binding.
Requirements and adjustment procedures for the lower main shaft to ensure free rotation without binding.
Procedure for timing the zigzag movement, ensuring correct needle positioning relative to the stitch plate.
Adjusting feed timing to ensure correct synchronization of feed dogs with needle movement.
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