Parts for Mtd 663: Transmission Parts

Tractor won't move or shifts poorly? This transmission kit includes all components needed to restore smooth operation. Moderate DIY repair for riders.

This is a variable speed pulley, designed as a genuine replacement part for use in select lawn tractors and riding mowers. The variable speed drive pulley is designed to control the drive belt, in combination with the throttle and choke, to help control the engine speed and provide the right level of movement during the mowing process. The pulley is subject to repetitive motion and constant stress, which can cause it to wear. It can become bent or damage from impact, as well. A damaged or broken pulley will cause the engine to malfunction or not work at all, rendering the tractor useless until it is replaced. Using a genuine OEM replacement like this model is essential. This specific drive pulley fits select models from Craftsman, Cub Cadet, Troy-Bilt, and Murray. It is sold as an individual unit. Be sure to disconnect the spark plug before working on the engine. Allow the engine to cool completely and wear gloves for safety. Several tools will be required for this job, including flathead and Phillips screwdrivers as well as a socket or wrench set.

Tractor won't move forward or reverse? This transmission kit restores drive control and movement. Essential repair for non-responsive drive systems.

Mounting bracket for lawn tractors. Connects and secures components to the frame. Replace if current bracket is cracked, bent, broken, or missing.

This is a genuine replacement bolt that is designed specifically for use on select lawn tractors. This tractor bolt is a specialty piece of hardware designed for use on the steering segment gear. This screw holds the gear in place and is exposed to constant vibrations and repetitive motion as a result. Over time, that can result in damage, wear, or even total breakage of the bolt and require a replacement. If the bolt isn't functional or is missing, the steering segment gear will not be secured and that can lead to further damage if left unattended. Using a genuine replacement part like this will guarantee an exact fit for compatible models. This genuine OEM gear bolt is manufactured by MTD. It is compatible with lawn and garden equipment from RYOBI, HUSKEE, Troy-Bilt, Bolens, Yard Machines, Yard Man, and Cub Cadet, along with select models from MTD. The bolt works for more than 100 compatible models. It is made of durable metal and sold as an individual unit. A wrench or socket will be required to replace this part. Always wear gloves when performing repairs on lawn and garden equipment and allow the engine to cool before doing any work.

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

This OEM screw is a fastener with a trimmed six-sided or hexagonal head plus a washer face on the bearing surface. It is one of the most commonly used fasteners. Considered standard hardware, this component has multiple applications and can be used on woodworking, machine assembly, and mechanical repair. The screw is 3/4 long and has a thread size of 5/16 -18. A hex cap screw is installed into tapped holes by turning the head to fit and tighten. This is the fastener of choice in applications where tight tolerance is necessary. This is a genuine factory part sourced from the manufacturer and is sold individually. It can be used with Craftsman, Toro, Cub Cadet, Ryobi, Troy-Bilt, Murray, Yard Machines, MTD, Huskee, Montgomery Wards, Bolens, Yard-Man, and MasterCut brands of lawn maintenance equipment including lawn mowers, snowblowers, tillers, leaf blowers, log splitters, and wood chippers.

With small gasoline-powered tools that require control panels, this hex screw attaches the panel to the handles of the tools. Machined to be durable, important screws such as these take a real beating. In their locations at critical points on the handle, the hex screws are considered "wear items," and thus periodically, they must be replaced. The control panel itself is often a location of extreme forces, jostling, and abrupt movement in unpredictable directions. The constant movement, with sheet metal rubbing against the hex screws from every direction, make wear inevitable. The manufacturers recommend that spare screws of this type be kept on hand if the heavy use of the equipment is expected. Among the gasoline-powered tools that use these screws are snowblowers, yard tractors, mowers, tiller, chippers, shredders, and other tools requiring hand-maneuvered levers. These screws are compatible with a number of equipment brands and manufacturers, including MTD, Ryobi, Poulan, Yard-Man, Bolens, Troy-Bilt, and Yard Machines.

Hex lock nut secures bolted joints on outdoor lawn equipment. Replace if threads are stripped, nut is missing, or won't hold proper tension.

Flange nut with integrated hub for lawn tractors and riding mowers. Replaces worn, stripped, or missing hardware on mower decks and assemblies.

The lock nut is a piece of standard hardware that may have a variety of applications on lawn and garden equipment, including on engines, housings, and other components. The lock nut offers a secure fit by tightening into a flange that prevents the nut from loosening like a regular nut might. Over time, the flange or the nut can become worn or damaged. In some cases, lock nuts may be lost during the process of other repairs or maintenance. Replacing them with genuine OEM parts like this lock nut is the best solution. This lock nut is compatible with hundreds of machines, including mowers, snowblowers, and chippers from MTD, Troy-Bilt, Cub Cadet, RYOBI, Yard-Man, Yard Machines, Bolens, and Husky. The ¼-inch lock nut has multiple locations and applications, so owners should consult their parts diagram for exact placement and part number identification. This lock nut is made of durable metal and sold as a single unit. Those who need additional pieces will have to order multiple quantities. This part will require a wrench or a socket to replace, as well as pliers and/or a screwdriver to hold the bolt or screw in place.

This part is a replacement bearing cup. This is a genuine OEM part made by MTD and has been sourced directly from the manufacturer. It is intended to replace a defective or broken bearing cup in lawn tractors.The bearing cup is what houses the variable speed pulley bearings themselves and thus is essential to proper equipment functionality. This part will need to be replaced immediately if ineffective in any way. Wear work gloves to protect the hands and check that equipment is powered off and cooled down before starting the repair process. For more accurate information on how and where to use this bearing cup, the appropriate owner's manual and equipment diagrams should be referred to. This bearing cup is a genuine OEM part made of durable materials and is sold individually. It is suitable for use with tiller models that have been manufactured by MTD, Craftsman, Troy-Bilt, and other brands.

Drive pulley hub for lawn tractors and riding mowers. Replaces cracked, worn, or broken hubs that connect drive components. Essential structural part.

A flat washer is used with many types of lawn and garden equipment, such as lawnmowers and log splitters. In many cases, the washer is used to hold a bolt in place on a blade. It will often be found between the blade surface and the bolt. The washer is flat with a center hole and ensures the main components of the equipment stay stable and held together when the machine is being used.Over time, the washers on lawn equipment can start to become damaged or break which can result in subpar performance. If a visual inspection shows that the flat washer has warped or is broken, it will need to be replaced. The process is fairly easy and will require nothing more than a screwdriver or socket wrench. The screw or bolt near the washer will need to be removed so the washer can be replaced.This washer is a genuine OEM replacement part that comes as an individual component sourced directly from the manufacturer. It fits lawnmowers, wood chippers, snowblowers, and log splitters by MasterCut, Craftsman, Yard-Man, Toro, Bolens, Cub Cadet, Bolens, Ryobi, Montgomery Wards, Troy-Bilt, Huskee, Murray, MTD, and Yard Machines.

This shift knob is a genuine MTD part, sold individually. A shift knob can be used as a replacement part in a lawn mower or a tiller. This genuine OEM part is made out of high quality, durable metal material that is built to last for the typical lifespan of the appliance.The shift knob in a lawn mower or a tiller might need to be replaced if it ceases to perform its central function for the appliance. This could occur if the shift knob has suffered damage from general wear and tear over long-term usage or as the result of a direct impact collision with a hard object, such as a rock or a curb.This component is a genuine OEM replacement part sourced directly from the manufacturer. It is sold individually. This shift knob is compatible with the following outdoor appliance brands: MTD, Craftsman, Toro, Cub Cadet, Troy-Bilt, Yard Machines, Huskee, Bolens, Yard Man, and MasterCut.

Shoulder spacer for lawn tractors and riding mowers. Maintains proper spacing between components during assembly. Replace if missing, damaged, or worn.

Sealed ball bearing reduces friction between fixed parts and rotating shafts. Replace if you hear grinding noise or notice wheel wobble. Verify fit.

Drive belt for lawn tractors. Replace when you notice slipping, cracking, or reduced performance. Verify compatibility with your model number.

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

Shift lever mounting bracket for lawn tractors. Secures the gear shift lever to the frame. Replace if cracked, bent, or broken to restore proper shifter support.