Parts for Mtd 663: Drive Parts

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 hous

This is a genuine replacement self-tapping hex screw with a blunt nose designed for lawn mowers and lawn tractors. It is used in a variety of locations for the engine assembly of lawn mowers. The self-tapping feature allows the metal screw threads to tigh

Belt guard pin secures the protective cover over drive belts on lawn tractors. Replace if broken, bent, or missing to keep belt guard properly attached. Verify fit with your model number.

Engine transmission pulley for lawn tractors and garden tractors. Replace if cracked, worn, or damaged to restore proper drive system operation.

Flat washer for lawn tractors and riding mowers. Secures bolts and distributes load across assemblies. Replace if worn, corroded, or missing.

Hex screw for lawn mowers and tractors. Secures deck, wheels, or frame components. Replace if stripped, corroded, or missing for proper assembly.

The variable speed belt goes around the engine pulley and the variable speed pulley. It is used on machines that have variable speed pulley drives and that need to be able to operate at different speeds. hese belts will wear down over time and need to be

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, a

Nyliner bearing for lawn tractors and riding mowers. Replace when you notice excessive play or noise in moving parts. Verify fit with your model number.

This hex nut is designed for use with select trimmers and mowers. It is a standard hardware part that may have multiple applications depending on the type of unit and model. The nut is typically used to secure engine components or housing elements to prov

Extension spring for lawn tractors and zero-turn mowers. Replace if damaged, broken, or lost tension. Verify compatibility with your model number.

Hex washer screw for lawn mowers, tractors, and snow blowers. Replaces stripped, missing, or damaged screws on deck panels and housing assemblies.

Hex screw fastener for securing lawn mower components. Replace if stripped, rusted, or missing to ensure proper assembly and equipment stability.

Replacement foot pedal pad for lawn tractors and riding mowers. Installs on control pedals. Needed when original pad is worn, cracked, or missing.

Tubeless air valve for lawn tractor and mower tires. Replace when cracked, leaking, or damaged during tire changes. Installs in wheel rim for proper inflation.

This extension spring attaches to the axle support bracket and the drive belt idler pulley on many types of lawn and garden equipment. It creates additional tension to the drive belt idler pulley. Sometimes the extension spring can be stretched out or may

Flange bearing reduces friction in lawn tractor moving parts. Replace if equipment vibrates excessively or makes grinding noises. Verify fit with your model.

This replacement part is a cotter pin. It is a genuine replacement part made by MTD. Cotter pins are also sometimes known as clevis pins and are responsible for fastening two metals together. This allows the machine to work properly and operate smoothly.

Shield spacer for lawn tractors and riding mowers. Provides proper spacing and alignment for protective shields. Replace if missing, damaged, or worn.

Flat idler pulley for lawn tractors. Guides and tensions the drive belt between engine pulleys. Replace if cracked, worn, or causing belt slippage.

Snap ring fastener for lawn tractors and snow blowers. Secures components on shafts and axles. Replace if missing, broken, or worn to restore proper fit.

Small metal washer used with nuts and bolts throughout lawn tractors and tillers. Replace when worn, corroded, or missing to maintain secure fastening.

This variable speed pulley is a genuine MTD part, sold individually. This variable speed pulley can be used as a replacement part in a lawn mower. The purpose of a variable speed pulley in a lawn mower is to regulate and manage the speed at which the moto

This spring clip is a genuine MTD replacement part for lawn tractors and lawnmowers. The function of a spring clip is to fasten individual components together by maintaining spring tension. This spring clip is a metal part that most commonly clips the fra

Replacement spacer for lawn mowers and tractors. Maintains proper spacing between components. Order a new spacer if yours is missing, damaged, or worn.

Belt keeper bracket for lawn tractors and walk-behind mowers. Secures drive belt in proper position. Replace if bent, broken, or missing to prevent belt slippage.

Fix a lawn tractor that won't start with a new safety switch. This interlock switch prevents starting unless safety conditions are met. Easy DIY repair.

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

Replace the axle shaft on your lawn tractor. Essential structural component for wheel mounting and stability. Order when cracked, worn, or bent.

Bell washer for lawn mowers and tractors. Installs to secure components and prevent loosening. Replace if cracked, worn, or missing for proper assembly.

This replacement part is a hex screw, and it is intended for use in different types of lawn equipment. This is a genuine replacement part made by MTD. This screw can be used in a variety of ways depending on the repair needed. Hex screws are similar to no

Replace worn spring bell washers causing loose parts or rattling noises. This conical washer cushions heavy loads in lawn equipment. Simple DIY fix.

Connects headlight wiring to enable on/off control. Replace if lights fail, wires are damaged, or connections are corroded. Confirm fit with your model.