HDA-99-1 Walbro Engine - Overview

This genuine OEM check valve seat assembly ensures proper fuel flow in one direction preventing leaks and backflow. It is located near the fuel inlet needle inside the carburetor between the needle control diaphragm chamber and the mixture screws cavity. If damaged it can lead to fuel leakage flooding and engine issues like sputtering or ...Read moredifficulty starting. Neglecting to replace a broken assembly can result in costly repairs and breakdowns. To replace the check valve seat assembly refer to your user guide for instructions to access and disassemble the carburetor. This may involve removing covers air filters fuel lines or other components. Since the slot for the assembly is shallow you can enlarge its opening by using a drill press. You can pry the valve out with an awl. Alternatively you can use a drift punch and mallet. Place the drift punch on top of the check valve seat and gently tap it to loosen and remove it. Please keep in mind that this replacement part is sold individually.

This item has been sourced from the original manufacturer to be used with small engine carburetors from Walbro. Overtime ethynol in gasoline can leave deposits in the carburetor and this can restrict the flow of fuel resulting in poor engine performance. The carburetor can be cleaned and rebuilt and this kit contains the parts that a recommended to replace when rebuilding the carburetor.

This choke friction spring is sourced from the original equipment manufacturer for use in carburetors. It is a small, coiled metal spring that helps to maintain the desired position of the choke by providing the right amount of tension. If the spring wears down, breaks, or is dislodged from its position, you will notice difficulties start...Read moreing the engine, rough idling, and lower power output. To remove the spring, use a pair of needle nose pliers to detach it from the choke lever/plate. Install the new friction choke spring, and ensure it is adequately tensioned to keep the choke in place. Move the choke lever to confirm that the plate opens and closes freely, before reassembling your equipment.

This OEM choke friction ball measures approximately .125-inches in diameter and is made of high-quality steel. This choke friction ball works within the carburetor of an engine, along with the choke friction spring, to provide tension onto the choke lever for precise user control. If the ball becomes warped, damaged, or worn-out, it can c...Read moreause the level of tension for the choke lever to diminish, ultimately affecting the choke mechanism functionality. If you notice the choke lever is loose, difficult to adjust, or simply does not hold, the friction ball is likely damaged or warped. To prevent any sort of issues with the friction ball in the future, make sure to perform regular cleaning and maintenance on the choke mechanism and apply a small amount of lubricant such as silicone grease or engine oil when necessary. To replace the choke friction ball in your engine, disconnect the spark plug on your equipment and access the choke mechanism ? which may require you to disassemble covers, filters, or other components to access it. Once you locate the ball, use a screwdriver or set of pliers to remove the ball from its housing and clean the housing before installing the new ball. You can then install the new ball, along with the rest of the choke mechanism, and test to see whether its movement has improved