WZ-42-1 Walbro Engine - Overview

Genuine Walbro replacement part, this item is sold individually. By pressing the bulb, it will purge the carburetor of air. Fuel will be forced up from the fuel tank through the fuel line then into the carburetor. Then the excess fuel will be forced back into the fuel tank through the fuel return line. At some time the primer will lose ...Read moreits elasticity or crack and need to be replaced. We have an article and video on How to Replace a Primer Bulb, in our Repair Center. That can be found on the front page of our site.

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 an authentic OEM sourced replacement part which is designed for use with lawn and garden equipment. Its purpose is to filter out dust and debris from contaminating the carburetor and the engine, over time it may get dirty and clogged eventually requiring replacement to maintain proper airflow. It is a high-quality component which is made of durable foam material and it is sold individually.

It is a genuine repair it which is supplied by the original equipment manufacturer. These parts are designed for Walbro carburetors that are commonly installed on a variety of lawn and garden equipment. Many mechanical problems in gas engines stem from the carburetor. This includes engine stuttering, fast idling, and an engine that just w...Read moreon't start up. This kit contains all the necessary parts to repair your carburetor. Refer to the appropriate diagrams for your model to ensure the proper repair procedure. A wrench set and a screwdriver will be needed to replace these parts.

This is a genuine OEM sourced part which is specially designed for use with Walbro carburetors. It is an identical replacement for a missing or a faulty spring that applies tension on the metering lever. It is a high-quality component which is made of durable metal and is sold individually. Keep in mind the hardware to secure it is sold s...Read moreeparately. Please make sure to refer to the appropriate diagrams of your model for the correct location and application of this spring.