YS Engine YSS2048 High Speed Needle 56SR, high-speed carburettor needle for RC engines  [YSS2048]

Precision high-speed carb needle

This YS Engine YSS2048 high speed needle is an RC-scale carburettor spare designed to let hobbyists fine-tune the engine's high-speed fuel mixture. It operates as the adjustable metering point in a glow engine carburettor, allowing subtle changes to improve mid-to-high RPM performance during tuning.

This item is supplied as a single replacement component; installation requires access to the carburettor needle seat and common hand tools used in RC engine upkeep. The needle's hardened steel tip and finish help resist wear from repeated adjustments and throttle tuning.

Role in tuning

In tuning, the high-speed needle governs fuel delivery at higher throttle settings. Small adjustments produce noticeable changes in mixture strength, so make incremental turns while monitoring throttle response and engine temperature. This component is intended for precision mixture tuning rather than major repairs.

Installation notes

• Remove the air filter to reach the carburettor.
• Use the correct driver to turn the needle gently, counting turns from your baseline.
• After fitting the new needle, run the engine carefully and recheck mixture and operating temperature.