Tamiya Idle Adjustment Screw Fs12-Fd

The Tamiya Idle Adjustment Screw FS12-FD (HC-7684449) is a genuine replacement part designed for setting and fine-tuning the idle speed on the Tamiya FS12-FD nitro engine. Ideal for restoring smooth, consistent idle performance, it helps maintain reliable starting and stable low‑speed running.

Use this OEM screw to replace worn, damaged or missing hardware and return your carburettor’s idle adjustment to factory-spec precision. As an original Tamiya component, it offers the correct fit and threading for dependable, repeatable tuning.

Suggested Compatibility

• Tamiya FS12-FD nitro engines

For correct identification, refer to your kit manual or parts list for part number HC-7684449.