Zenoah K117281150 Fuel Diaphragm for G200,G230,G231,G260,G290 Engines  [K117281150]

Compatibility checklist for the Zenoah K117281150

The K117281150 diaphragm is a replacement rubber element intended for Zenoah G-series RC engines. It performs the fuel metering function on G200, G230, G231, G260 and G290 PU/PUH/PUM/RC engine variants and is supplied as the diaphragm component only for model engine upkeep.

Before ordering, ensure the engine code stamped on your motor matches one of the models listed so the part number aligns with your pump housing. This item is the diaphragm alone and does not include additional seals, gaskets or pump housings, so confirm existing components are serviceable.

Fitting guidance: consult your engine service manual to remove the carburetor or pump cover, clean the mating surfaces, and position the diaphragm with the correct orientation to avoid pinching. Reuse original screws and gaskets if they are in good condition and tighten to the manufacturer's torque recommendations to secure an airtight seal.

Compatibility notes and fault finding: because the diaphragm regulates fuel pulses to the carburetor, deterioration can produce unstable idling or stalling. If tuning changes do not resolve driveability issues, check the diaphragm for splits or hardening and replace with the exact K117281150 part as required.

Upkeep advice: keep the pump chamber clean of varnish and inspect the diaphragm at regular service intervals. Using the specified K117281150 maintains the intended pumping characteristics and helps avoid unintended changes from altered internal geometry.