Parts for Yard Machines 21AA40M8700 / 2014: Au Crankcase Parts

This is a piston ring set for use in various types of small engines. Piston rings help to maintain the gas compression between the cylinder wall and the piston. They ensure that the gas generated during ignition does not leak. When the piston rings go bad, it could result in gray or white smoke from the exhaust, poor performance, and excessive oil consumption.Dirt and normal wear and tear can take a toll on the piston rings. Fuel flooding could also cause damage to the rings. Poor lubrication could cause problems with the piston rings, as well. If there are problems with the rings, owners will want to replace them soon. These piston rings are compatible with certain machines from Cub Cadet, MTD, Yard Machines, Troy-Bilt, Columbia, and Craftsman. This piston ring set is sold individually and comes with four of the piston rings. They are genuine OEM parts that have been sourced from the manufacturer and are made from high-quality material.

Pistons are essential for proper engine function. When expanding gases push the piston, it turns the crankshaft. When the piston compressed the fuel-air mixture, the spark ignites and causes combustion. If the pistons are going bad, owners might notice white or gray exhaust smoke, low power when accelerating, loss of performance, or excessive oil consumption.Pistons may need to be replaced for any number of reasons. They could have damage to their crown, which could be caused by overheating. There could be impaction marks if they were not installed correctly or if the valve timing is incorrect. The pistons could be fused or have elements that have melted, or there could be cracks in the piston. Any of these issues would necessitate a replacement.This piston is used for select small engines from MTD, Troy-Bilt, Yard Machines, Columbia, and Cub Cadet. Each piston is sold individually and is a genuine OEM part sourced from the manufacturer. Those who need to replace more than one piston will need to buy them separately.

This replacement part is a piston pin. This is a genuine replacement part made by MTD. This part is small but important to ensure that the piston is working properly during use. A new piston pin might be needed if the current one is missing or damaged. It is not uncommon for the pin to be stripped down over time due to normal wear and tear. The pin may also become lodged in place and should be replaced if this happens. Wear work gloves when completing this repair to prevent injury during the job. The engine should be completely turned off and cooled down before beginning repairs.This part is sold individually and is sourced directly from the manufacturer. This is a genuine OEM replacement part.

This is a high-quality connecting rod assembly that is used in many types of lawn and garden equipment from several manufacturers. It has a metal rod that connects to the crankshaft and piston. The purpose of the connecting rod is to allow pressure and combustion to rotate the engine's output. If this part is damaged or broken, the garden equipment may not work or may not have the desired level of performance. If this happens, the connecting rod assembly should be replaced.A basic set of tools and work gloves will be needed to replace the connecting rod assembly. First, turn off the tool with the damaged rod and put it on a level and sturdy surface. The spark plug wire should be disconnected to prevent the engine from turning on. Access the rod and replace it with the new part before use.The connecting rod assembly is sold as an individual part. It is an authentic OEM replacement component that is sourced directly from the manufacturer. The part is made to be compatible with lawnmowers, wood chippers, snowblowers, log splitters, tillers, and leaf blowers manufactured by MasterCut, Craftsman, Yard-Man, Cub Cadet, Huskee, Troy-Bilt, MTD, and Yard Machines.

This is a governor arm shaft found on lawnmowers, chippers, and other engines on lawn and garden equipment. It is a component of the governor assembly maintains a steady speed regardless of how much stress is placed on the engine. The governor arm is connected to the carburetor arm shaft. One end of this arm is connected to the governor spring and the other to the throttle linkage. Speed is increased or decreased based on the amount of push or pull that is placed on the throttle arm. If the governor arm shaft is bent, broken, or damaged, the governor arm will not be able to maintain its speed. The engine may appear to be stuck in high speed or it won't accelerate at all.Remove the carburetor to access the governor assembly. Disconnect the governor spring and take the linkage off the governor arm. Remove the governor arm from the arm shaft and then remove the broken governor arm shaft. Install the new shaft and reassemble the governor. Reinstall the carburetor. The governor arm shaft is made from heavy-duty metal and is sold as an individual unit. It is compatible with snowblowers, lawnmowers, chippers, and other small engines manufactured by MTD, Craftsman, Yard Machines, Troy-Bilt, Yard Man, Cub Cadet, and Husky.

This replacement part is a camshaft assembly. This is a genuine replacement part made by MTD. This part is a rotating metal object that converts rotational motion to reciprocal motion. This ensures that the machine is able to move successfully according to the user's preferences at any given time. A new camshaft assembly might be needed if the user notices the engine is not working up to the normal standard. This can be from a faulty camshaft assembly and should be replaced if this is the case. Be sure the engine is turned off before attempting this repair to ensure the safety of the user and those around them. This is a genuine OEM replacement part. This part is sold individually and is sourced directly from the manufacturer.

The flywheel key keeps the engine flywheel and the crankshaft connected. In the event that the engine is forced to a sudden stop, the flywheel key could be sheared off, making it impossible for the engine to start back up again. Replacing the flywheel key is a part of routine maintenance for many modern engines, so it should be inspected and replaced as needed. This sturdy metal flywheel key is easy to install, but remember to choose the right torque setting when doing the replacement. Always disengage the spark plug and wear gloves when replacing engine parts. This genuine flywheel key is designed to be used in a number of lawn and garden equipment products from MTD, Troy-Bilt, Yard Machines, Cub Cadet, Yard-Man, Husky, and Bolens. It can be used as a replacement for many models of snowblowers, lawnmowers, and log splitters. Sold individually.

This oil fill plug is an OEM part sourced directly from the manufacturer, and it is sold individually. It is manufactured by MTD. An oil fill plug keeps the oil where it is supposed to be in the machine. It is designed for use with snowblowers, tillers, leaf blowers, wood chippers, and log splitters. It is compatible with products from brands such as Craftsman, Cub Cadet, Troy-Bilt, Yard Machines, and MTD.The oil fill plug is crucial in preventing oil from leaking as well as clearing the path upon removal for any needed oil changes. It is removed when the oil needs to be drained. The replacement or repair process of the oil fill plug should be straightforward, though it may be helpful if the owner or operator uses a socket wrench to aid in the replacement process. The user replacing the part should always wear gloves during any assembly, replacement, or installation processes. The user should also refer to the owner's manual of their equipment and any guiding diagrams that clarify the placement location.

This replacement part is an oil seal. This is a genuine replacement part made by MTD. This part is used to ensure that oil and other fuel cannot escape from the tank. The seal prevents it from leaking during use to ensure the engine is able to run properly. A new oil seal might be needed if the current one has been damaged. If the seal is worn down and thinner than before, it can cause leaks and oil waste. If this is the case, the seal should be replaced immediately. Oil leakage can cause other issues within the machine. Refer to the owner's manual for more information on how to replace this part. This is a genuine OEM replacement part. This part is sold individually and is sourced directly from the manufacturer.

This short block assembly is a genuine OEM replacement part sourced directly from the manufacturer for use with the engine in many lawn and garden machines. The camshaft, crankshaft, piston, rod, valves, and governor are included in the kit. The gasket replacement kit is also included in the assembly. Damaged engines are costly and time-consuming to rebuild. Replacing the short block assembly is a less expensive option. Damage to the crankshaft is common in outdoor lawn and garden equipment. Rocks, sticks, and other debris can get caught in the engine and damage the camshaft or crankshaft. When this occurs, replacing the short block is easier than taking the entire short block apart to replace the damaged part. If the crankshaft is damaged, there is no reason to replace the entire engine when a replacement short block assembly will provide necessary repairs at a lesser cost.This short block assembly is sold as an individual part. It comes pre-assembled and ready to install. This assembly is designed for use in leaf blowers, log splitters, tillers, wood chippers, and other small engines manufactured by Cub Cadet, MTD, Yard Machines, and Troy-Bilt.

This replacement part is an oil seal. This part is small but important in various types of machines that rely on oil to run. The oil seal is found near the fuel tank and ensures that there are no leaks. If the machine is leaking oil, it can be due to a damaged oil seal. Seals like this one can wear out over time or be knocked out of place by impact.This is a genuine OEM replacement part manufactured by MTD. This part is sold individually.

This part is a replacement engine. This is a genuine OEM part made by MTD and has been sourced directly from the manufacturer. This part can be used to replace a broken or defective engine assembly in a variety of tiller models. This is a complete replacement engine with all engine parts included. If the current engine is damaged beyond repair, then it may require the replacement of the entire engine structure. It's important when working on or near any mechanical equipment that it is powered off and completely cooled down before starting any repairs. For more accurate information on how and where to install this engine, the appropriate owner's manual and equipment diagrams should be referred to. As an authentic replacement part, this engine is suitable for use on several different models of tillers manufactured by MTD, Craftsman, and other brands. This is a genuine part made of high-quality, durable materials and is sold individually.

This replacement part is an external gasket kit, and it is intended for use in different types of lawn equipment. This is a genuine replacement part made by MTD. This gasket kit is different from typical gasket kids as they are used on the external side of the engines. These gaskets are still very important to the engine as a whole and allow it to run smoothly during use.A new external gasket kit might be needed if the current one is broken or damaged. If there are noises coming from inside the machine it is possible that the parts of the gasket are out of place or could be malfunctioning. Be sure the engine of the appliance is completely powered down and cooled off before replacing the gasket kit as this area can be hot from use.Be sure to reference the specific user manual prior to beginning this repair. Note that this is a genuine OEM replacement part and is told individually. This part is sourced directly from the manufacturer.

This genuine OEM complete engine gasket kit is sourced from the manufacturer for use in tillers, blowers, chippers, and other outdoor lawn and garden machines. The kit contains all the gaskets that are required to fit in and on the many different parts of the engine. These gaskets provide protection from outside elements that could interfere with engine performance, such as rain or debris. These gaskets also keep fluids and air from leaking out of the engine, which can reduce engine performance as well. Engine gaskets should be inspected and maintained to ensure proper engine performance. The gaskets are made of materials intended to withstand high heat, like silicone, cork, rubber, or paper, depending on where it is installed. Over time, the gaskets may become worn, cracked, or torn and need to be replaced. A screwdriver is required to remove the engine cover to access the various gaskets. This complete engine gasket kit allows for the replacement of all gaskets. Clean old grease from the engine before installing the new gaskets. Add new lubricant before installing the new gaskets. Replace the engine cover and tighten screws. This gasket kit is sold as one unit. This gasket kit is designed for various MTD, Cub Cadet, Troy-Bilt, and Yard Machines engines.