How do you adjust the bobbin tension on a Juki?

How do you fix Juki tension?

Many tension problems are caused by too tight top tension. Learning to loosen the top tension dial will solve the problem. Turn it a bit to the left then do a bit of stitching to see how the adjustment is playing out. If it is still too tight, loosen it a bit more and try stitching again.

Can you adjust bobbin tension?

If the bobbin case doesn’t budge, your bobbin tension is too tight. To tighten your bobbin tension, turn the tiny screw on the bobbin case a smidgen clockwise. To loosen bobbin tension, turn the screw counterclockwise. A quarter turn or less is a good place to start.

Why is my Juki thread breaking?

The upper thread tension could be set too tight. Set the tension to the best thread tension setting or less. Make sure the spool of thread is installed correctly using the correct size spool cap for the size of spool. … Check that the bobbin is wound so that it about 80% full and that the thread is evenly wound.

How do you open Juki?

There’s a plastic plug in the top of the bottle. Run a knife around edge and you can then pop the plug out. It comes out lots easier after the first time.

Why is my thread bunching underneath?

A: Looping on the underside, or back of the fabric, means the top tension is too loose compared to the bobbin tension, so the bobbin thread is pulling too much top thread underneath. By tightening the top tension, the loops will stop, but the added tension may cause breakage, especially with sensitive threads.

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How do you tighten thread tension?

Changing Bobbin Tension

You should see a small screw on the flat/closed side of the bobbin case. Turning the screw a tiny bit counterclockwise will loosen the bobbin tension; turning it clockwise will tighten the tension.