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General| Brand | JUKI |
|---|---|
| Model | LH-515 |
| Category | Sewing Machine |
| Language | English |
Lists technical details for LH-515 and LH-512 models, covering sewing type, application, and speed.
Covers the process of installing the sewing machine, including setting up hinges and the oil reservoir.
Explains how to adjust needle thread tension using tension post nuts and bobbin thread tension using adjusting screws.
Explains how to align timing marks on the bobbin case opening lever link when the needle bar is at a specific position.
Details timing the needle and sewing hook, including clearances between hook point and needle, and hook point to needle eye.
Details adjusting the clearance between the needle and hook point by repositioning the hook driving shaft saddle using specific screws.
Lists common causes of thread breakage, such as scratches, incorrect tension, and lubrication issues, with corresponding solutions.
Details causes of skip-stitching, including synchronization issues, clearance, and needle positioning, with corrective actions.
Identifies causes of irregular stitches, such as bobbin thread issues, surface smoothness, and hook faults, with solutions.
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