K&S KS23791 Engine Needle Extension Rod & Switch Lever Blue  [KS23791]

Engine needle extension and switch lever

This K&S KS23791 is an RC-scale needle extension rod combined with a switch lever, finished in blue anodised aluminium. It provides a compact way to move the carburettor needle adjustment and to operate a simple on/off switch without reaching the engine body directly.

Use cases are centred on field tuning and bench adjustments for model glow or nitro engines where remote needle access or a small lever switch is preferred. The part is intended as an accessory to extend the needle control and to give a discrete manual switch actuator that can be mounted near the engine area.

Installation typically involves replacing or coupling to the existing needle linkage and positioning the switch lever in a convenient location. Basic hand tools are sufficient for mounting, and alignment for smooth movement and positive switch action is recommended. Regular checks for secure fastenings and free movement will help maintain consistent needle response.

For tuning, the extension rod lets you make small needle adjustments from a safer reach, while the switch lever offers a simple mechanical on/off control for ignition or pump systems that use a manual actuator. Use with standard RC model engine setups only and confirm fitment against your engine's needle and switch geometry before installation.