Parts for Craftsman 21AK144G799: Engine Assembly Parts

Replacement screw for outdoor power equipment including lawn tractors, tillers, leaf blowers, and trimmers. Replace stripped, missing, or damaged screws.

Mounting screw for lawn tractors and tillers. Secures components and housings. Replace if stripped, rusted, missing, or damaged during maintenance.

Replace worn or cracked O-ring seals on tillers, trimmers, and edgers to prevent leaks and ensure proper engine function. Verify fit with your model.

Seals the engine cylinder to prevent air and fuel leaks. Replace if cracked, worn, or causing performance issues. Verify compatibility with your model.

This breather hose is a component that makes up part of the ventilation system for the crankcase with lawn and garden tools. It has a single way valve that prevents excess exhaust gases from transferring to the engine. A reed is included to help lubricate the piston as the hose moves oil to the crankcase. The tube is made with special fibers that filter and cool the air to prevent the engine from overheating.If oil is leaking from lawn and garden equipment, this can indicate that the breather hose needs to be cleaned or has been damaged. If it is dirty, it will often create blue smoke that leaves the exhaust pipe. If the smoke is dark, this is a sign that the breather hose may be damaged and need replacement. Inspect the hose to see if it looks dirty or damaged so a replacement can be made if needed.This breather hose is an OEM replacement component directly sourced from the manufacturer. It is a single individual hose. The breather tube can be used with lawnmowers, tillers, string trimmers, edgers, and leaf blowers by Yard-Man, Craftsman, Cub Cadet, Bolens, Ryobi, Troy-Bilt, Murray, MTD, and Yard Machines.

This is a genuine replacement oil plug that is found in certain trimmers, edgers, and blowers designed for outdoor use. The oil plug is used to seal and fill the oil in the engine. This part is a high-quality plastic piece that features threads for screwing it into place and an O-ring to create a strong seal to prevent leaks and ensure optimal engine pressure. The oil cap may become stripped or damaged over time, or the O-ring could become faulty. In either case, replacing the entire cap/plug is the easiest solution.This genuine OEM replacement oil plug is compatible with machines from Troy-Bilt, MTD, Yard-Man, Yard Machines, and Cub Cadet. The plug is sold individually and comes with the O-ring. There are no other parts or hardware included. No tools are required to replace this plug. Simply unscrew the old one and screw the new one into place once the O-ring has been put on the new plug. Wear gloves whenever engine work is being performed to ensure hand protection. The oil should be checked regularly in all machines, which is a good time to check the cap to ensure it isn't damaged or in need of replacement.

This replacement part is an oil plug ring. It is a genuine replacement part made by MTD. This specific part is typically found in machines and appliances that have an oil tank. This ring is used to make sure that the oil from the machine does not escape during use.A new oil plug ring might be needed if the current one is allowing oil to escape from the tank. If there are oil drips near the engine it is possible that the ring is damaged or broken. This part is small but important to the overall use of many machines. Be sure to reference the specific user manual for more information on how to replace this part. This part is sold individually. It is a genuine OEM replacement part and is sourced directly from the manufacturer to ensure a proper fit and long-lasting use.

This genuine MTD replacement part is a crankcase cover O-ring for use with trimmers, blowers, tillers, edgers, string trimmers, and cultivators. A properly functioning O-ring is essential for the safe and reliable use of the equipment. The crankcase houses the crankshaft, and the O-ring is used to ensure a seal on the case. A damaged or worn out O-ring may cause oil to leak, leading to unsafe operation. The O-ring may become worn out or damaged with extended use, necessitating replacement. Remember to check the O-ring periodically to spot any wear or damage. This part is an identical replacement for an O-ring that is missing, worn out, or damaged. Prior to working with this part, please refer to the original product manual for installation instructions. Additional tools may be required for installation of this part. For safety, always wear gloves and ensure unit is powered down prior to performing any installation or repair.This high quality OEM replacement part is sourced directly from the manufacturer, and it is sold individually. This part is compatible with a variety of Craftsman, Cub Cadet, Troy-Bilt, Yard Machines, MTD, and more trimmers, blowers, tillers, edgers, string trimmers, and cultivators.

Flywheel assembly for tillers and outdoor power equipment. Replaces cracked, damaged, or worn flywheels that affect engine timing and cooling fan operation.

This is an ignition coil/module assembly for a string trimmer. Ignition coils are generally found on yard equipment that uses a motor, like lawnmowers and trimmers. It sends electric pulses to the spark plug so that the equipment can start.A faulty ignition coil can cause an array of problems. If the machine isn't starting it may need to be replaced. Sometimes, engine problems may be caused by other parts, so be sure to confirm that it is the ignition coil causing the trouble. An ignition tester can be used to tell if it needs to be replaced. The clutch and the engine will have to be removed to access the old ignition coil, once it has been accessed it can be aligned on the magnets of the engine and put back together for the machine to work again.This is an OEM replacement part sourced directly from the manufacturer and it is sold individually. It is for use with these brands: Yard-Man, MTD, Cub Cadet, and Troy-Bilt.

Replacement muffler assembly for tillers. Installs on the exhaust system to reduce engine noise. Replace if cracked, rusted, damaged, or missing.

Replacement muffler screw that secures the muffler cover in place on lawn equipment. Needed when original screw is stripped, missing, or damaged.

Engine won't start or runs rough? This spark plug provides reliable ignition for small engines in trimmers, blowers, and tillers. Easy DIY replacement.

This gasket is a genuine MTD part. It is an insulator gasket meant as a replacement part on tillers, string trimmers, leaf blowers, edgers, and cultivators. The insulator gasket seals the connection between the insulator and cylinder. This gasket is made of durable, heat-resistant plastic. To replace the insulator gasket, a pair of work gloves, wrench, and screwdrivers are necessary. This gasket is a genuine OEM part sourced directly from the manufacturer. It is sold individually. It is compatible with machines made by Craftsman, Cub Cadet, MTD Pro, Troy-Bilt, Yard Machines, and Yard-Man.

Replace your missing or stripped 10-32 hex nut for tillers and lawn tractors. Secures panels, guards, and components. Essential hardware replacement.

Replacement insulator for gas trimmers and handheld power equipment. Installs to provide heat protection and electrical isolation. Order now if cracked or missing.

Carburetor gaskets ensure that the space between the carburetor itself and the insulator is properly sealed. This prevents air from seeping into the engine. As time passes, gaskets begin to become worn and crack, which can lead to small air leaks. If the gasket deterioration becomes severe the leaks will worsen. An air leak on an engine can cause vibrations and misfires. Gaskets should be regularly replaced to prevent engine trouble. This carburetor gasket is a genuine OEM part that has been sourced directly from the manufacturer. This carburetor gasket is manufactured from a top-quality composite material. This replacement gasket fits a number of different models of Troy-Bilt and Craftsman lawn and garden equipment. Please note these gaskets are sold individually.

Carburetor assembly for small engine edgers, tillers, and trimmers. Mixes air and fuel for proper engine operation. Replace if cracked or leaking.

This replacement part is a gasket. This is a genuine replacement part made by MTD. This part is an important part of many different types of machinery. The gasket works with the engine and ensures that it runs smoothly and properly, A new gasket is needed if the user is unable to start or stop the engine. If the current gasket is visibly damaged or missing, it is recommended that it be replaced as soon as possible. The engine should be completely turned off before attempting to replace this part. It is also recommended that the user wear work gloves during the repair to ensure safety to them and those around. This gasket is a genuine OEM replacement part to ensure proper fit and long-lasting use. This part is also sold individually and is sourced directly from the manufacturer.

Air cleaner assembly filters dust and debris from entering your edger engine. Replace if missing, damaged, or clogged to maintain performance. Verify fit.

Breather housing assembly for line trimmers and tillers. Replaces cracked, broken, or damaged housings. Installs on engine to maintain proper ventilation.

Replace your missing or stripped 10-32 hex nut for tillers and lawn tractors. Secures panels, guards, and components. Essential hardware replacement.

Cleans air entering the carburetor by removing harmful contaminants. Replace regularly to improve fuel efficiency and prolong engine life. Verify fit.

Replacement fuel tank assembly for tillers, edgers, and trimmers. Includes attached fuel line. Replace your cracked, leaking, or damaged tank reservoir.

Replacement fuel cap for lawn tractors, trimmers, blowers, and tillers. Prevents fuel leaks and evaporation. Replace if cracked, broken, or missing.

This fuel tank support is a genuine MTD part, sold individually. A fuel tank support can be used as a replacement part for outdoor appliances including tillers, string trimmers, leaf blowers, and edgers. This genuine OEM part is made out of high quality, durable materials that are specifically designed to last and hold up to possible general wear and tear over long-term usage.The fuel tank support might be subject to various forms of damage that can reduce or negate the efficacy of its function. If this occurs, the fuel tank support should be removed and replaced by this genuine OEM replacement part in order to guarantee safe continued usage of the appliance over its typical lifespan.This is a genuine OEM replacement part sourced directly from the manufacturer. It is sold individually. This fuel tank support is compatible with the following outdoor appliance brands: MTD, Craftsman, Cub Cadet, Troy-Bilt, and Yard Machines.

Tractor won't move or drives when disengaged? The clutch assembly engages and disengages power from engine to wheels. Moderate DIY repair.

This is a genuine replacement screw designed for use in select MTD engines on lawn and garden equipment. Specifically, this is an anti-rotation screw, which is used to stop the drive shaft housing from turning inside of the main housing assembly. This screw is a small part that is subject to constant vibrations, pressure, and high temperatures. It can sometimes become worn or damaged as a result or even break off entirely, which would mean that the inner housing would no longer be held in place accordingly. If this screw is damaged or lost, it needs to be replaced with a genuine OEM replacement as soon as possible. This MTD anti-rotation screw is manufactured with high-quality materials and designed for use in select trimmers from MTD, RYOBI, Yard-Man, Troy-Bilt, Murray, Cub Cadet, Yard Machines, and Bolens. This replacement will require a screwdriver. Simply remove the damaged screw, if it is not already missing, from the clutch cover assembly, and then install the new screw. It should only take a few minutes to perform the replacement. Be sure to wear gloves to protect the hands. This screw is sold individually and does not include any additional parts or hardware.