WYLA-3-1 Walbro Engine - Overview

This authentic OEM metering diaphragm assembly is housed within the carburetor of your lawn and garden equipment. Positioned between the carburetor body and the fuel pump, it regulates fuel delivery and maintains the air-fuel ratio within the engine. It has a self-adjusting vacuum system and responds to the amount of fuel being drawn into...Read more the engine. When the engine runs at higher speeds, more fuel is pulled in and the diaphragm compresses. As a result, the pin in the center of the diaphragm pushes against the metering level and lifts the regulator inlet needle, letting additional fuel flow from the pump into the reservoir. If the assembly malfunctions, you may experience engine stalling, rough idling, or notice fuel odor, pooling, or dripping around the carburetor area. To remove the metering diaphragm, refer to your user guide for instructions on locating and accessing the carburetor. This typically involves removing the fuel pump cover screw and pump cover, followed by the fuel pump diaphragm and gasket. Remember to blow through the external pulse hole on the body casting and remove the filter screen before proceeding to remove the four screws securing the metering diaphragm plate and the metering diaphragm itself. Please note that this replacement part is sold individually.

This is a genuine manufacturer-sourced component which is specially designed for use with Walbro carburetors commonly installed on lawn and garden equipment. It is an identical replacement for a missing or a faulty diaphragm that was installed on a new unit. The part helps to provide a tight seal for the pump. Keep in mind this high-quali...Read morety item is made of durable composite material and is sold individually. Please make sure to check the appropriate diagrams of your model for the correct location and application of this components.

Thumb drive-Service video. Complete Walbro diaphragm carburetor inspection & service video set.