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General| Type | Industrial Sewing Machine |
|---|---|
| Model | 31-20 |
| Stitch Type | Lockstitch |
| Needle System | 16x231 |
| Bed Size | Flat bed |
| Stitch Types | Straight stitch |
| Presser Foot | Standard presser foot |
| Motor Type | Clutch motor |
| Needle | DBx1 |
| Stitch Length | 5mm |
| Weight | Approx. 45 kg |
Step-by-step guide for setting and threading the needle of the Singer sewing machine.
Instructions for adjusting the needle and bobbin thread tensions for optimal stitching.
How to adjust the stitch length using the front thumb screw.
Detailed steps for setting the needle bar to the correct height for proper machine operation.
Guidance on adjusting the feeding mechanism timing for optimal stitch formation.
Procedure for timing the thread take-up spring for correct thread tension.
How to adjust the tension of the thread take-up spring to ensure proper thread uptake.
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