Parts for Briggs & Stratton 125K02-0139-E1: Air Cleaner, Alternator, Controls, Electrical, Exhaust System, Flywheel Brake, Governor Spring, Ignition Parts

The breather tube is responsible for filtering out exhaust gases from the crankcase. It has special fibers in the tube to remove contaminants as it moves the exhaust gases through the ventilation valve and out into the air. The tube also helps ensure that the engine air stays cool for optimal performance. This rubber tube can become dry and cracked over time, or it could be damaged due to an incident or impact. In any case, the tube should be fully replaced when it is not functional to ensure optimal performance at all times. This genuine OEM breather tube is manufactured to exact standards and made by Briggs and Stratton. It is compatible with select engines on more than 150 lawn mowers and generators from Toro, Briggs & Stratton, and Lawn Boy. This replacement tube is made of high-quality materials and sold as an individual part. No hardware or other parts are included with the purchase. This part should only be replaced once the engine is cool and all work should be done in a well-ventilated area. A screwdriver and socket set will be required to replace this part.

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.

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.

This standard engine screw is responsible for securing various components and has multiple applications or locations, depending on the type and model of the lawn and garden equipment. It needs to be in good condition to continue to work effectively. Over time, however, hardware can come loose, be lost, break, or be otherwise worn or damaged, which would require a replacement. This screw can provide a solution for a number of applications on various engines. This genuine OEM replacement screw is manufactured to exact standards by Briggs & Stratton. It is compatible with hundreds of engines in lawn mowers and generators. Check the owner's manual for part location, as well as appropriate replacement procedure. This screw is made from durable metal and sold as an individual unit. Those who need more than one screw will have to order multiple quantities. This hardware should always be installed properly according to the manufacturer's recommendations and is a specialty screw that has specific uses. Not using the OEM screw replacement could cause operational issues or void any warranties that are in place.

This is replacement air cleaner screw is compatible with a range of different types of lawn and garden equipment that have air cleaners. The screw is used to ensure the air cleaner is properly fastened to the machine. Without the screw, the air cleaner would not stay in place. The air cleaner screw could suffer damage in a range of ways. It might simply be from wear and tear or corrosion from the elements. In addition, it could have been damaged or the threads could have become stripped. If the threads are damaged, it will not hold properly. The air cleaner screw could have been lost, as well. In any of these instances, the owner will want to replace the screw. This is a genuine OEM replacement air cleaner screw that is sold individually. The screw can be used with pressure washers, wood chippers, chainsaws, leaf blowers, lawn mowers, and other small engines with an air cleaner. Compatible brands include Craftsman, Briggs & Stratton, Toro, Cub Cadet, Homelite, Murray, Simplicity, Lawn-Boy, and MTD.

This filter is used for lawn and garden equipment. A dirty or clogged filter could cause the engine to run poorly.

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.

This screw is designed to be used on all sorts of lawn and garden equipment. The metal screw is durable and attaches to the muff guard bracket to keep it in place and stable while the equipment is being used. This screw can become damaged through overuse or wear and tear. It can also break or become stripped, which will require it to be replaced.Visually inspecting the area with the muff guard bracket is connected to the rest of the equipment will give information about whether the screw is broken or damaged. The screws can also be cleaned to be more visible so small problems are easier to pick up on. Sometimes the screws can become loose, which is another situation where a replacement is needed. Simply use a screwdriver to take out the old screw and replace it with a new one.This screw is a genuine OEM replacement part that is directly sourced from the manufacturer. It comes as an individual part. The screw can be used on snowblowers, lawnmowers, lawn tractors, tillers, pressure washers, leaf blowers, edgers, generators, wood chippers, and log splitters made by MasterCut, Simplicity, MTD, Snapper, Lawn-Boy, Wheel Horse, Cub Cadet, Toro, Craftsman, and Briggs & Stratton.

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 exhaust gasket is a genuine Midwest Engine replacement part for appliances operated by small engines, such as chipper shredders, snowblowers, leaf blowers, and lawn mowers. An exhaust gasket's purpose in the engine is to create a sealed layer between the carburetor and the exhaust tube to keep dirt and debris out of the infrastructure of the engine. A malfunctioning or broken exhaust gasket could compromise the seal between the carburetor and the exhaust tube, meaning that dirt and debris could get into the engine and cause damage. An exhaust gasket could be subject to damage from overuse and is generally known to require replacement over time from general wear and tear. If the exhaust gasket seal is compromised, it should be replaced immediately. Evidence of dirt and debris compromising an engine could take the form of oil leaking from the carburetor, black smoke pluming from the exhaust tube, and lower engine pressure than usual. This exhaust gasket is compatible with the following brands: Briggs and Stratton, Cub Cadet, and Toro. This part sold 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 foam pre-filter that is used to help prevent dust, pollen, and other debris from clogging the air filters of small engines. One of the most common problems faced by small engines is an inadequate air supply caused by air filters that have become mired with airborne debris. Cleaning or replacing filters can become a tiresome and expensive proposition. If filters are not adequately cared for, they perform poorly, waste gasoline, pollute the air, and cause internal engine damage. A good way to help an air filter do its job is by adding a foam pre-filter in the air filter compartment. Pre-filters are exposed to all the things that clog air intakes, so periodically, they also must be replaced. Foam pre-filters are designed to fit snugly inside the housing of the air filter of virtually all small engine housings. To install a pre-filter, remove the air filter housing by taking off the one screw holding it in place. Remove the air filter from the housing and place the pre-filter inside against the exterior wall of the housing with the arrows pointing up. Reinstall the air filter. The paper of the filter should fit perfectly against the labeled side of the pre-filter. Now simply reattach the air filter housing. Genuine Midwest Engine makes this OEM replacement part, and it is sold separately.

This OEM air cleaner cover from Briggs & Stratton fits over the air cleaner and filter system, protecting the filters from excess dirt, debris, and other potential damage. This cover is also designed to help hold the air filter in place. The plastic housing is durable, but it can be subject to damage over time. This replacement is a snap-on cover, so no tools are required. Be sure to wear gloves when performing any kind of work on lawn and garden equipment. This air cleaner cover is designed to work with multiple types of lawn and garden equipment from Briggs & Stratton, Lawn-Boy, and Toro. It works with various engines on generators and lawnmowers, including hundreds of different specific models. It is sold individually and does not include the actual air filter or the bottom part of the housing.

The primer is used to help circulate fuel to the carburetor, which ensures that the engine starts quickly. Primers can start to wear out over time, which can cause the engine to leak gas or the engine not to start at all. In those cases, it is time to look at the carburetor primer to see if it is properly in place and that it is still in good shape. If there is an issue, it is time to replace it. This genuine OEM replacement carburetor primer part is high-quality and is made to work with lawn mowers and small engines from a range of different brands. These brands include the likes of Craftsman, Briggs & Stratton, Toro, Cub Cadet, Lawn-Boy, and Simplicity.

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.