AP-874 - Sewing machine JUKI - Free user manual and instructions
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| Product Type | Industrial Sewing Machine |
| Brand | Juki |
| Model | AP-874 |
| Stitch Type | Lockstitch |
| Max Sewing Speed | 5,500 stitches per minute |
| Stitch Length Range | 0–5 mm |
| Presser Foot Lift | 5.5 mm (knee-operated) |
| Needle Bar Stroke | 31 mm |
| Automatic Thread Trimmer | Yes |
| Automatic Back Tacking | Yes |
| Automatic Presser Foot Lift | Yes |
| Lubrication System | Automatic oil wick |
| Motor Type | Built-in clutch motor, 550 W |
| Power Supply | 220–240 V, 50/60 Hz |
| Weight | Approx. 38 kg |
| Dimensions (L × W × H) | 630 × 280 × 510 mm |
| Needle System | DB×1 (#14–18) |
| Hook Type | Horizontal rotary hook |
| Included Accessories | Needles, bobbins, oiler, screwdrivers, spare parts set |
| Safety Features | Needle guard, moving part covers, manual lock switch |
| Maintenance | Regular cleaning and oiling of hook and feed mechanism |
Frequently Asked Questions - AP-874 JUKI
How do I thread the Juki AP-874 sewing machine?
Raise the presser foot and needle to highest position. Place thread on the spool pin, pass through the thread guide, then the tension discs (ensure thread is between the discs), then through the take-up lever from right to left, then down through the needle bar thread guide, and finally thread the needle from front to back. Pull a length of thread under the presser foot.
How do I adjust the thread tension on the AP-874?
Turn the tension dial on the front of the machine. Higher number = tighter tension. For balanced stitches, the upper and bobbin tensions should be adjusted together. Test on a scrap fabric; the thread should lock in the middle of the fabric.
What type of needle does the AP-874 use?
It uses industrial needles of system DB×1 (also known as 134 or 134R). Typical sizes range from #14 to #18 depending on fabric weight.
How do I change the needle on the Juki AP-874?
Loosen the needle clamp screw using a screwdriver. Remove the old needle. Insert the new needle with the flat side facing away from you (toward the rear of the machine) and push it up as far as it will go. Tighten the screw firmly.
How do I clean and oil the AP-874?
You must clean and oil the machine daily. Open the hook cover and remove the bobbin case. Clean lint and dust from the hook area using a brush. Apply a few drops of sewing machine oil (not too much) to the hook race, the feed dogs, and the needle bar. Wipe excess oil.
Why does the machine skip stitches?
Check if the needle is bent, dull, or incorrectly installed. Replace if needed. Also ensure the needle is suitable for the fabric and thread. Check that the hook timing is correct, and the needle bar height is properly set. If problem persists, consult a technician.
How do I adjust the stitch length on the AP-874?
Locate the stitch length dial on the front or top of the machine. Turn the dial to the desired length (0–5 mm). The machine will automatically adjust the feed.
What is the maximum sewing speed of the AP-874?
The maximum sewing speed is 5,500 stitches per minute (spm). However, for optimal performance and longevity, it is recommended to operate at lower speeds, especially with thick fabrics.
How do I use the automatic back tack function?
The AP-874 features automatic back tacking. At the start of a seam, press the back tack lever or button (depending on model variant). The machine will sew several reverse stitches automatically. Release to sew forward. At the end, the machine can also automatically back tack if programmed.
How do I perform basic troubleshooting if the machine stops?
First, check that the power cord is plugged and the main switch is on. Ensure the thread is not tangled or stuck. Check the needle for damage. Verify the bobbin is correctly wound and inserted. If the machine jams, turn off power, remove fabric, and gently rotate the handwheel to release the needle. If issues persist, consult the manual or a qualified technician.
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