Parts for Mtd 21AA412A052: Drive System Parts

Self-tapping screw for lawn mowers and outdoor power equipment. Secures panels, covers, and components. Replace if stripped, missing, or corroded.

Flange lock nut secures components on mowers and outdoor power equipment. Replace if stripped, corroded, or missing to restore proper fastening.

This is a hex screw used on a variety of types of lawn and garden equipment. On large machinery, it is often used to mount the gas tank. On smaller items, it tends to be used to clamp the housing together. It can secure items like plastic, metal, brick, and wood together. It measures 5/16-18 x .75 inches and is made of durable metal. In some cases, the screw can become damaged, broken, or stripped, which means it needs to be replaced.A visual inspection will indicate whether the screw is damaged. If it needs to be replaced, a hex wrench can be used to remove it from the equipment. Afterward, the replacement hex screw can be installed with the wrench before being tightened to ensure materials hold together well.This hex screw is a genuine OEM part that is sold individually. It is sourced directly from the manufacturer. The hex screw is compatible with lawnmowers, wood chippers, log splitters, snowblowers, chainsaws, edgers, tillers, leaf blowers, and string trimmers by Craftsman, Cub Cadet, Ryobi, Troy-Bilt, Husky, Broan, Yard Machines, MTD, Huskee, Montgomery Wards, Bolens, Turf King, Yard-Man, and MasterCut.

Replace your lawn mower's hex head tap screw if lost, stripped, or damaged. This small fastener secures components on mowers, tillers, and edgers.

Replace broken or bent tiller tines that fail to dig properly or cultivate soil effectively. Direct fit tine assembly restores ground penetration.

Tiller not digging or tilling properly? This tine assembly digs into soil to break up and cultivate ground. Direct fit replacement for multiple models.

Hex head screw for lawn mowers and outdoor power equipment. Replaces damaged, stripped, or missing screws. Essential for secure assembly and repairs.

A flange lock nut, also known as a flange lock or a lock nut, is created to be used in various types of lawn and garden equipment. This flange lock nut holds other parts in place and, when properly threaded, will resist loosening. Over time, a flange lock nut may begin to weaken and may become loose or break. If it appears to be broken or weak, a replacement is required. Flange locks can be adjusted and uninstalled after use. When replacement is required, you may need a socket set, screwdriver, hacksaw, and butane torch. The socket wrench will loosen the bolt it is connected to, while the torch is used to heat the lock nut. A socket wrench may remove the nut, but sometimes cutting it with a hacksaw is required. This flange lock nut is a genuine OEM component directly from the manufacturer and comes in an individual unit. It is made of metal, a gold color, and can be found in various areas of lawn equipment. It works with lawnmowers, trimmers, snowblowers, cultivators, tillers, and leaf blowers by Poulan, MTD, Toro, Cub Cadet, Murray, Troy-Bilt, Bolens, Yard Machines, Craftsman, and Yard-Man.

This lock washer is used frequently for a number of applications on power yard equipment. The size, 5/16, is the default for many small engine housing and manifold applications. Lock washers are used with machined bolts to fasten engine blocks to the housing of the equipment being used. The compressed washer is able to handle the constant vibration of the small gasoline engine without losing the seal between the screw or bolt and the housing. Typically these lock washers only need to be replaced when they are misplaced during repairs or when the screws that attach them have to be chiseled or cut away, meaning the washers are destroyed as well. These OEM certified replacement washers have been manufactured to the same specifications as the originals they are replacing. In addition to lawn mowers, lock washers of this type and size are frequently used on blowers, lawn tractors, cultivators, snowblowers, and trimmers. Brands compatible with this type of washer are Murray, Husky, Poulan, Bolens, Yard-Man, Cub Cadet, Troy-Bilt, Yard Machines, MTD, and Ryobi.

Hex head screw for securing components on lawn mowers, tractors, and outdoor power equipment. Replace if missing, stripped, or damaged during maintenance.

This is a genuine OEM engine pulley sourced directly from the manufacturer for use on tiller engines and other engines with a pull start. The starter cord is attached to a pulley that has a spring for rewinding the cord after the engine starts. If the engine pulley is damaged due to rust or corrosion and the string won't pull, the engine won't start. The pulley may make screeching or whining sounds when pulled, this is one way to recognize that the pulley is beginning to go bad and should be replaced soon.Before replacing the pulley, make sure the engine is cool and remove the spark plug. Remove the starter housing to access the rope starter and pulley. Disassemble the pulley system and discard the old pulley. Reinstall the new pulley and thread the starter cord back around it. Reassemble the housing and put the spark plugs back so that you can test the starter. This engine pulley is made of heavy-duty steel and sold as an individual unit. It is designed to be compatible with small engines manufactured by Craftsman.

Tiller won't engage or belt slips? This engine pulley outer half works with the inner half to drive the tines. Moderate DIY repair for tillers.

This part is a replacement V-belt. This is a genuine OEM part made by MTD and has been sourced directly from the manufacturer. This part's intended use is to replace a broken, snapped, or otherwise defective V-belt in lawn mowers and tractors.The V-belt, or transmission belt, transfers torque from the engine to power the equipment. Belts are subject to significant wear and tear, causing them to wear down, become brittle, or snap, requiring replacement. It's important when working on or near an engine to make sure the equipment is powered off and completely cooled down before starting any repairs. Access to proper tools is recommended before attempting this part installation. For more accurate information on how and where to install this V-belt, reference the appropriate owner's manual and specific equipment diagrams.This is an authentic OEM replacement part made of high-quality materials. This V-belt can be used with lawnmower and lawn tractor models that have been manufactured by MTD, Yard Machines, Bolens, Troy-Bilt, Yard Man, and Husky. Sold individually.

Fix tiller belt slipping or drive issues with this replacement drive pulley. Essential component for power transmission in rear-tine and standard tillers.

This is a replacement bell washer, a flat washer that can be used with a wide range of various types of lawn and garden equipment. The inner dimension of this washer is 0.40 inches, while the outer dimension is 0.88 inches. Washers are typically used as a way to help ensure a tight connection when used with bolts or screws. They will also help to distribute the pressure of the connection and reduce the risk of corrosion. Washers will also provide some protection from damage during installation. Washers could need to be replaced for any number of reasons. In some cases, they might have become corroded or worn down over time. This could mean they no longer provide a solid and secure connection. Other times, the washer could become lost while working on the machine. Owners should always be sure that they replace any lost or damaged washers right away. Not using washers can reduce the lifespan of the machine. This is a genuine OEM bell washer that is sold individually. It is typically used in lawn mowers, snowblowers, tillers, leaf blowers, string trimmers, log splitters, wood chippers, edgers, and chainsaws. It is compatible with Craftsman, Cub Cadet, Ryobi, Troy-Bilt, Husky, Murray, Yard Machines, MTD, Huskee, Montgomery Wards, Bolens, Yard-Man, Turf King, and MasterCut brands.

Hex screw that secures components on lawn tractors and outdoor power equipment. Replace if screw is stripped, missing, or damaged during maintenance.

Hex nut for tillers and snow throwers. Secures various components throughout the machine. Replace if stripped, corroded, or missing during repairs.