Zenoah K330481150 Carburetor Diaphragm Service Part  [K330481150]

Zenoah Engine Diaphragm Description

This is an RC-scale diaphragm supplied without packing, intended as a direct replacement within Zenoah engine spare parts. The diaphragm acts as the consumable membrane inside diaphragm carburetors and is used during scheduled maintenance or when replacing worn components.

To fit: remove the carburetor cover, check for the correct gasket or transfer the original packing if available, position the diaphragm flat on the mating surface, then reassemble and verify airtight operation. Because the item ships without packing, ensure you have the original gasket or order the appropriate packing before completing assembly.

In troubleshooting, symptoms like throttle flat spots or erratic idling often point to a degraded diaphragm. Replacing it can return consistent fuel metering; afterwards, fine-tune idle and needle settings while the engine runs on a controlled bench setup.