Zenoah K149181161 Needle Spring for G200PU-EI Carburettor Part  [K149181161]

Carburettor needle spring for G200PU-EI

This Zenoah K149181161 needle spring is an RC-scale carburettor spare designed for use with the G200PU-EI carburettor family. It serves as the replacement spring for the needle assembly and is intended for routine maintenance or to restore proper needle seating when wear or weakened spring force affects idle or throttle response.

Installation is straightforward for hobbyists familiar with small RC carburettors: remove the carburettor from the model, access the needle assembly according to the carburettor layout, swap the old spring for the K149181161 spring while keeping the needle orientation unchanged, then reassemble and bench-check throttle movement before fitting the carb back to the engine. Verify idle and throttle response on a safe test stand and make incremental carburettor adjustments as needed.

As a simple replacement part, this needle spring plays a specific role in tuning: it affects needle seating force which in turn influences fuel metering around mid and idle throttle positions. Use it when spring fatigue or loss of tension is suspected, and combine the replacement with routine carburettor cleaning and proper needle adjustment for best results.