Product Description
229-915151 Hook Oil Screw
This hook oil screw controls lubricant flow to the rotary hook assembly, ensuring the hook stays properly oiled during high-speed operation.
Fits
- Jack F4, F5, F6 single needle lockstitch machines
- JUKI DDL-8700 single needle lockstitch machines
Why Replace It
A stuck or worn hook oil screw disrupts oil flow to the hook, leading to premature hook wear or, if over-tightened, oil leakage onto fabric. Replacing it restores correct oil regulation.
FAQ
How often should the hook oil screw be checked?
Check it during routine maintenance — if hook noise increases or you notice oil pooling near the hook area, it’s worth inspecting first.
