G200PU-EI Carburettor Needle Spring Replacement - K149181161 Zenoah  [K149181161]

Replacement Needle Spring for G200PU-EI Carbs

This Zenoah K149181161 needle spring fits G200PU-EI series carburettors and replaces the original spring in the needle assembly to recover tension and stabilise idle and throttle response.

Fitting 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.

The spring alters needle seating force and so influences mid-range and idle fuel metering. Replace when spring fatigue or loss of tension is suspected, and combine the swap with a full carburettor clean and cautious needle adjustment for best results.