10112016 Hook Stopper for Jack F4/F5/F6 Sewing Machine

10112016 Hook Stopper

This hook stopper holds the rotary hook assembly in its correct position, keeping hook rotation stable and properly timed with needle movement.

Fits

• Jack F4, F5, F6 and JUKI single needle lockstitch machines

Why Replace It

A worn hook stopper lets the hook assembly shift slightly out of position, which can throw off needle-to-hook timing and cause skipped stitches.

अक्सर पूछे जाने वाले प्रश्न

Can a loose hook stopper cause thread breaks too?
Yes — mistimed hook engagement doesn’t just skip stitches, it can also catch and break thread inconsistently during stitch formation.