229-915151 Hook Oil Screw for Jack F4/F5/F6 Machine

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.

अक्सर पूछे जाने वाले प्रश्न

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.