Tension Japanese Zig Zag Samb 23/32in

Tension Unit, Japanese Zig Zag Samb 23/32in. Not listed for a specific machine model, so check the specification against the part you are replacing. This is a compatible replacement part rather than a manufacturer-original part.

What this part does

The upper tension unit is the pair of discs, spring and dial that put drag on the needle thread. Lint between the discs, a tired spring or a grooved disc all show up as uneven stitching that re-threading does not fix.

Specifications

How to tell if this is the right one

Match by the model list. Tension units differ in mounting, dial type and whether they include the check spring.

Signs you need this part

Loops on the underside, thread breaking, tension that changes when nothing was adjusted, or a dial that turns without changing the stitch.

Fitting it

Most household units are held by one screw behind the dial and pull straight out. Thread through the discs with the presser foot UP so the discs are open.

Questions about this part

Which machines does this tension unit fit?

The distributor's listing does not name specific models for this part, so we do not claim a fitment. Compare the specification on this page with the part you are replacing, or send us your machine's model number and we will check.

Should I try cleaning before replacing?

Yes. Run a folded piece of thin fabric between the discs with the foot up. If the stitch does not improve with clean discs, a new needle and correct threading, replace the unit.

How long does delivery take?

Orders are dispatched from our distributor's US warehouse. We do not hold stock ourselves and cannot promise same-day dispatch; current delivery estimates are shown at checkout, and we will email you if an item is back-ordered.