Needle Extension & Switch Lever for RC Engines - K&S KS23791 Blue  [KS23791]

Precision tuning extension and toggle lever

The K&S KS23791 combines an RC needle extension rod with a small switch lever and is anodised blue for visual clarity. It lets pilots perform incremental carburettor needle changes from outside the engine bay and provides a compact mechanical switch actuator.

Typical use is during on-site tuning and bench setup for glow or nitro engines where direct access is constrained. The item acts as an aftermarket accessory to extend needle reach and to position a manual lever close to the engine area for convenience.

Fitting usually requires joining to the existing needle linkage or replacing the terminal end. Align the rod for smooth travel and locate the lever to avoid contact with moving parts. Simple hand tools will complete the job; periodic checks will preserve consistent adjustment feel.

When tuning, the extension enables finer, safer needle tweaks from a distance while the lever supports simple mechanical control of ignition or pump functions that use a manual actuator. Always confirm geometry and clearance with your engine's existing components before committing to installation.