229-11804 Feed Regulator Screw Worm Set for Jack F4/F5/F6

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229-11804 Feed Regulator Screw Worm Set

This worm-and-screw set drives fine stitch-length adjustment, translating dial movement into precise feed mechanism changes.

Fits

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

Why Replace It

Worn worm threading causes stitch length adjustment to feel gritty or imprecise, and can eventually slip under vibration during operation.

FAQ

How is this different from the single feed regulator screw?
This is the complete worm-and-screw set, giving you matched components rather than pairing a new screw with a worn worm gear.