Parts for Craftsman 21AA404D299 / 2011: Transmission Parts

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.

If your tiller won't move or wheels lack power, the shaft may need replacement. Transmits engine power to wheels for proper rotation and operation.

This shaft wheel pony is a genuine MTD part, sold individually. This shaft wheel pony can be used as a replacement part in a tiller. The purpose of a shaft wheel pony in a tiller is to function as a fully assembled shaft with hardened steel worms which connect the blades of the tiller to the motor of the tiller so that the blades can be rotated and cut through the soil.The shaft wheel pony in a tiller might have to be replaced if the shaft suffers irreparable damage in the form of puncturing, denting, cracking, scraping, eroding, or warping to the point of reduced or no functionality. If this occurs, the shaft wheel pony should be removed and replaced by this genuine OEM replacement part in order to guarantee safe use of the tiller for the operator. This replacement should be facilitated in accordance with the proper set of instructions sourced from a relevant appliance handbook or manual.This is a genuine OEM replacement part sourced directly from the manufacturer. It is sold individually. This shaft wheel pony is compatible with the following outdoor appliance brands: MTD, Craftsman, Cub Cadet, Troy-Bilt, Huskee, Yard Man, and Yard Machines.

Tiller not engaging or tines not turning? The worm drive shaft transfers power to the tines. Common failure part in rear-tine tillers. Moderate DIY repair.

Retainer ring for lawn tractors and tillers. Secures components in place during operation. Replace if cracked, broken, or missing to restore proper fit.

Replace a worn worm gear if your tiller won't move forward or reverse smoothly. This 61-tooth gear meshes with the transmission drive system.

Tiller not moving forward or reverse properly? This left-hand worm gear transfers power to the wheels. Common wear part that restores traction.

Oil seal for tillers prevents fluid leaks from transmission or engine components. Replace if you notice oil pooling or leaking. Verify fit with model number.

Seals the gear housing on rear-tine tillers to prevent oil leaks and contamination. Replace if cracked, brittle, or leaking. Verify fit with your model.

Replacement oil seal for tiller gearboxes. Prevents water, dirt, and contaminants from entering the gearbox. Replace if leaking or damaged. Verify fit with your tiller model number before ordering.

Wire retaining ring for lawn tractors and walk-behind mowers. Secures wiring harnesses in place. Replace if broken, missing, or no longer holding wires.

Replacement flat washer for tillers. Distributes load and prevents hardware damage. Replace if worn, cracked, or lost. Verify fit with your model number.

Flat washer for rear-tine tillers. Provides secure fastening and even load distribution. Replace if washer is cracked, bent, or missing.

Flat washer for rear-tine tillers. Provides secure fastening and proper spacing for bolts and screws. Replace if damaged, corroded, or missing.

Flat washer for tillers. Installs between moving components to reduce friction and prevent wear. Replace if worn, damaged, or missing during repairs.

Flat washer for lawn tractors and riding mowers. Replace if missing, worn, or damaged to ensure proper hardware fit and prevent loosening.

Mandrel bearing for riding mowers and lawn tractors. Replace if spindle makes noise or blade wobbles. Ensures smooth blade rotation. Verify fit by model.

Ball bearing for lawn tractors and tillers. Replace if you notice grinding noise, excessive vibration, or wheel wobble. Verify fit with your model number.