Installation and fitment for Zenoah K117281150
This K117281150 diaphragm pump is supplied as a direct replacement part for Zenoah G-series RC engines. It functions as the fuel metering diaphragm used on the listed G200, G230, G231, G260 and G290 PU/PUH/PUM/RC variants and is intended for model engine service and repair.
Check the engine code on your motor before ordering to confirm compatibility with the part number shown. The listing covers only the diaphragm element; there are no extra gaskets, seals, or pump housings included, so verify your existing pump hardware prior to purchase.
Installation notes: remove the carburetor or pump cover according to your engine manual, clean the mating faces of any residue, then position the diaphragm in the correct orientation to avoid pinching. Reuse the original screws and gaskets where appropriate and torque fasteners to the engine maker's recommendations to prevent air leaks or distortion.
Tuning impact and basic troubleshooting: the diaphragm pump helps maintain steady fuel pulses to the carburetor, which affects idle smoothness and throttle response. A cracked or hardened diaphragm can cause lean running, irregular idle, or stalling under load. Replace the part if fuel leakage or persistent flat spots remain after carburetor adjustments.
Maintenance tips: inspect the diaphragm regularly for splits or hardening and keep the pump chamber free of varnish. Use the exact K117281150 item to preserve original pump characteristics and avoid altering internal pump geometry which can harm drivability.
