Parts for Briggs & Stratton 128M05-0420-B1: Controls, Electrical, Flywheel Brake, Governor Spring, Ignition Parts

This genuine Briggs & Stratton governor link can be used as a replacement part for appliances operated by small engines, including lawn tractors, lawnmowers, snowblowers, leaf blowers, vacuums, tillers, and generators. The function of a governor link on a small engine appliance is to set the throttle to run at a steady speed. A governor link might have to be replaced if it withstands enough damage to prevent the governor link from keeping the throttle running and keeping the rest of the engine's governor assembly in place. Remember to always wear gloves when handling, repairing, and operating outdoor equipment. This governor link is compatible with the following brands: Midwest Engine, Briggs & Stratton, Toro, Cub Cadet, and Simplicity. This part is sold individually.

The governor spring controls the flow of fuel from the carburetor to the engine, which controls the throttle of the engine. The spring works by creating tension for the throttle so that the engine speed can be controlled with ease. When the throttle is engaged, the spring is stretched or retracted, controlling the butterfly valve that releases fuel into the engine to generate power. The spring can become stretched over time. In some cases, it is damaged or lost during other repairs. This replacement part only requires a screwdriver and pliers for installation and is sold as an individual part. Be sure to disconnect the spark plug and wear gloves when repairing engine parts. This genuine OEM governor spring replacement part can be used with select models of lawn and garden small engines, including lawn mowers and wood chippers. Compatible with Briggs & Stratton, Cub Cadet, and Lawn Boy. This part is made to exact standards and complies with all required regulations and guidelines to provide safe use in small equipment engines.

This is a screw that is used in many types of lawn and garden equipment, including lawnmowers and wood chippers. It comes with a black finish and is made of durable metal. The screw can be used in many locations on a tool to attach two components together. Screws can also be used in tandem with nuts, but the two components should have the same threading and finish.Screws can become damaged, break, or be stripped and will need to be replaced. Corrosion, extreme temperatures, and unexpected stress can all lead to issues with a screw. A visual inspection can indicate whether the screw should be replaced. If it does need replacement, a screwdriver can be used to remove the original screw. The new component can be placed and tightened.This screw is a genuine OEM replacement part that is sourced directly from the manufacturer. It is sold as a single component. The screw can be used with many types of lawn and garden equipment, including lawnmowers, tillers, pressure washers, leaf blowers, edgers, generators, wood chippers, and snowblowers manufactured by Briggs & Stratton, Cub Cadet, Craftsman, Murray, Wheel Horse, Lawn-Boy, MTD, MasterCut, Simplicity, and Toro.

The stop switch, sometimes called a kill switch, is triggered to stop the engine when the operator is no longer on the seat ,This is important for safety. If the stop switch is not functioning properly, inspect it for damage and replace it right away. Operating a machine without a functional stop switch can be dangerous. The stop switch is a genuine OEM part, and it is sold individually. The switch can work for many types of equipment including lawn tractors, lawnmowers, log splitters, wood chippers, pressure washers, and tillers. The replacement part is compatible with a range of brands, including Midwest Engine, Toro, Craftsman, Briggs & Stratton, Lawn-Boy, Murray, Snapper, and MTD.

The spark plug boot is a rubber piece that is responsible for connecting the spark plug to the spark plug wires and completing the connection. Spark plugs are necessary to create the engine spark that will start the motor in lawn equipment and other small engines. The boot holds the terminal and keeps everything protected from the elements and insulated so that it continues to work correctly. If the spark plug connection seems weak or if the existing boot is damaged, this replacement could provide the solution. This durable rubber boot will insulate the spark plugs and help any small engine run better. This spark plug boot replacement can be used with a number of Briggs & Stratton engines and is compatible with hundreds of different machines from Toro, Lawn-Boy, and Briggs & Stratton. This boot replacement is sold individually as a single piece and does not include the terminal or any other housing or materials.

This genuine OEM replacement part is a spark plug terminal for a wide variety of small combustion engines. In a combustion engine, the spark plug generates a small electrical charge that creates enough power to start up the ignition and engage combustion. The plug connects to the ignition through the terminal. Spark plugs generate and then pass a small electrical current through to the ignition. Usually, the main issue with spark plugs is that this current hyper-extends and ends up frying the spark plug. However, if the terminal is damaged, the charge will not pass into the ignitor, and the engine will not turn. If the spark plug can carry a charge but the engine still won't turn, it's likely the terminal that needs replacing. This is an easy repair because the terminal should just snap on and off. If stuck, a pair of needle-nose pliers should make it easier. This high-quality replacement part is compatible with engines from Murray, Toro, Lawn Boy, and Briggs & Stratton. It is sourced from the original manufacturer and ships individually.

This spring brake is a genuine Midwest Engine part that can be used as a replacement part for outdoor appliances with small engines, including lawn mowers, chipper shredders, snowblowers, and other such appliances. Spring brakes are a braking system employed a large, coiled spring that is kept under high tension; the control valves attached to the spring brake are the mechanism by which the spring brake is released.If the spring brake has been damaged, is malfunctioning, or is in a state of disrepair, this will manifest in the form of a sudden, volatile eruption from the air brake chamber. This is a dangerous state for a small engine, so repair should be conducted immediately. Additionally, a new spring brake part should be ordered before any attempt to use the appliance without a proper repair. Remember to always wear gloves when handling, repairing, and operating outdoor equipment, and stay safe around the small engine of the appliance if the spring brake has malfunctioned and caused a dangerous situation.This spring brake is compatible with the brands Briggs and Stratton, Cub Cadet, and Toro.

This is a replacement air vane designed for use with a wide range of lawnmower engines. In order to operate, an engine needs both air and fuel. Those also need to be in the right proportions at different times during engine operation. For instance, when first cranking a cold engine, the choke must be closed to prevent air flow, but then the choke must open to allow airflow as the engine increases speed. The air vane pulls the choke open to allow proper airflow. The air vane is made from plastic. As such, it may degrade over time through exposure to high heat. Eventually, it may crack and break. If the engine does not stay running, it may be due to a damaged air vane that no longer pulls the choke open. Replacing a damaged air vane will require a wrench and a screwdriver. Remove the starter rope, discharge chute, gas tank, and engine shroud. Remove the damaged air vane and replace it with the new one, then reassemble the mower. This is a genuine OEM replacement part and is sold individually. It fits Briggs & Stratton engines and is used on Toro and Lawn-Boy mowers.

This is a spring that applies tension to the air vane on Briggs & Stratton lawnmower engines. It’s designed to return the air vane to a closed position when the throttle is closed and allow it to open wider as more air is required. This ensures a proper mixture of air and fuel inside the carburetor. Under ordinary circumstances, the air vane spring should not need to be replaced. If the air vane is violently pulled past its standard maximum point, the spring can be damaged. It can also become damaged over time due to corrosion, particularly if the lawnmower is stored outdoors. Replacing the spring is a simple matter. Just remove the old spring, then install the new spring in its place. With most models, no further disassembly will be required. On some other mowers, you may need to remove the carburetor or motor housing to access the air vane spring. Since it has universal applicability, this air vane spring is used on other engines from Toro, Lawn-Boy, and even Cub Cadet. This is an OEM part sourced directly from Briggs & Stratton, and it is sold individually.