WTA-7-1 Walbro Engine - Overview

This item has been sourced from the original manufacturer and is intended to be used with Walbro carburetors. Overtime fuel additives can clog the passages in the carburetor effecting the engine's performance. If this occurs you may want to clean and rebuild the carburetor. This kit includes all the items that are recommended to replace when rebuilding the carburetor.

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 Walbro replacement part. The needle spring is commonly found in Walbro carburetors, connected to the idle needle. Please be aware that there are different springs used in the machine. Refer to the parts diagram to be sure of ordering the correct part. This item is made of metal, and is sold individually. You may need a screwdriver to replace this part.