What to do if my JUKI Sewing Machine is skipping stitches?
If your JUKI sewing machine is skipping stitches, properly adjust the timing between the needle and looper. Also, if you are using a heavy-weight or rigid material (fabric), the needle guide should come into contact with the needle by 0.1 to 0.2 mm.
What to do if my JUKI MB-1373 has excess thread?
If your JUKI sewing machine has excess thread, it could be due to several reasons. You can adjust the thread pull-off lever to a smaller or larger value. If the thread end comes from a point different from the needle penetration point, increase the button clamp pressure.
How to fix a JUKI MB-1373 Sewing Machine when threads are not trimmed?
If the threads are not being trimmed on your JUKI sewing machine, adjust the position of the moving knife if the thread separating claw of the moving knife fails to separate the thread on the fabric from the thread on the needle without fail. If the needle fails to enter the center of the holes in the button, adjust it with the jaw lever holder. If the last stitch skips at the needle entry point, adjust the looper, referring to '2.-(2) Positioning the looper'. If the height of the thread separating claw of the moving knife is incorrect, adjust the height of the thread separating claw of the moving knife, referring to '3.-(3) Adjusting the height of the thread separating claw of the moving knife'.
What causes my JUKI MB-1373 to fail to produce stitches?
If your JUKI sewing machine fails to produce stitches, it could be due to improper adjustment of the thread pull-off lever (adjust it to a larger value) or because the thread tension applied by the face plate thread No. 3 is too high (decrease the tension applied by the face plate thread).
Why is my JUKI MB-1373 experiencing mechanical malfunction?
Mechanical malfunctions in your JUKI sewing machine could arise from a low stop-motion noise, in which case you should adjust the stop-motion position. If the sewing machine stops before the predetermined stop-motion position is reached, decrease the button clamp spring force. If the driving pulley is too large, decrease the axial play in the driving pulley at the time of stop motion.
What to do if the needle thread breaks after the JUKI MB-1373 Sewing Machine has stopped?
If the needle thread breaks after your JUKI sewing machine has stopped, properly adjust the tensing lever. Also, make sure to adjust the amount of lift of the button clamp jaw lever to 8.5 to 9.5 mm. Finally, adjust the nipper clearance to 0.4 to 0.6 mm.
How do I fix a JUKI Sewing Machine when the last fastening stitch is poorly tensed?
If the last fastening stitch is poorly tensed on your JUKI sewing machine, adjust the thread tensing lever. Also, adjust the nipper clearance to 0.4 to 0.6 mm and the thread bind notch timing.
Why does the thread slip off the needle eyelet of my JUKI Sewing Machine?
If the thread slips off the needle eyelet on your JUKI sewing machine, adjust the thread pull-off lever to a larger value. Also, adjust the clearance in the nippers to 0.4 to 0.6 mm.
Why is the length of thread remaining on the wrong side of the fabric after thread trimming too long on my JUKI MB-1373 Sewing Machine?
If the length of thread remaining on the wrong side of the fabric after thread trimming is too long on your JUKI sewing machine, adjust the position of the moving knife. Refer to '3.-(2) Adjusting the position of the moving knife.' Also, adjust the amount of lift of the button clamp jaw lever to 8 mm.
What causes both the needle thread and the thread on the wrong side of the fabric to be trimmed on my JUKI MB-1373 Sewing Machine?
If both the needle thread and the thread on the wrong side of the fabric are being trimmed on your JUKI sewing machine, adjust the position of the moving knife when the machine completes stop-motion, referring to '3.-(2) Adjusting the position of the moving knife.' Also, adjust the height of the thread separating claw of the moving knife, referring to '3.-(3) Adjusting the height of the thread separating claw of the moving knife.'
General| Number of Needles | 1 |
|---|---|
| Stitch Type | Lock Stitch |
| Feed Mechanism | Drop Feed |
| Max Sewing Speed | 1, 500 rpm |
| Lubrication | Automatic |
| Presser Foot Lift | 10 mm |
| Type | Button Sewing Machine |
Details on how to install the sewing machine head on the table and attach components.
Instructions for applying oil and grease to various parts of the sewing machine.
Procedure for correctly inserting and tightening the needle in the needle bar.
Step-by-step instructions for threading the sewing machine with thread.
Details on adjusting thread tension using tension posts for optimal stitch formation.
How to adjust the thread pull-off lever for correct thread delivery during sewing.
Steps to adjust the needle bar height and looper position for correct stitch formation.
Instructions for setting lengthwise and crosswise feed regulators for 2- or 4-hole buttons.
How to adjust the stop-motion cam and hook for precise machine stopping.
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