Parts for Mtd 13AP78XS099: Deck / Spindle Assembly Parts

Seat wiring harness jumper for front-engine lawn tractors. Connects seat safety switch to electrical system. Replace if frayed, damaged, or corroded.

Fix uneven cutting or blade wobble with this lawn tractor spindle assembly. Includes mandrel, shaft, and pulley for smooth blade rotation and clean cuts.

Mounting bracket assembly for lawn tractors and riding mowers. Connects and secures components in place. Replace if cracked, bent, or broken.

Stabilizes your mower deck belt and prevents slipping or excessive friction. Replace if damaged, bent, or missing to keep your belt aligned and running.

Fix mower blades that won't stop spinning after disengaging the clutch. This deck brake assembly halts blade rotation when the clutch lever is off.

This part is a right-hand brake assembly bracket that is used on lawn tractors. The brake assembly is the component that stops the blade from moving.A new right-hand brake assembly bracket may be needed if the existing bracket is cracked, broken, dented,

Hex screw for lawn mowers and garden equipment. Replaces cracked, stripped, or missing hex head bolts. Six-sided head fastens metal or wood components.

Hex cap screw for securing components on lawn mowers, tractors, and outdoor power equipment. Replace if stripped, rusted, or missing hardware.

Hex head self-tapping screw for outdoor power equipment. Securely fastens components throughout your machine. Replace if missing, stripped, or worn.

There are multiple uses for the 5/16-18 Hex Screw. It is often used with small gasoline-powered yard equipment such as lawn and garden machines. While hex screws such as these may be used in edgers and snowblowers, the most frequent use this screw is in y

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

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 woo

This replacement part is a screw. This is a genuine replacement part made by MTD. Screws are small but important to the overall workings of many appliances. Screws work with other small pieces such as nuts and washers to keep parts secure during use.A new

Hex bolt for lawn tractors and riding mowers. Secures structural components and attachments. Replace if stripped, rusted, or missing for proper assembly.

Small metal washer that secures parts on lawn tractors and riding mowers. Replace if worn, cracked, or missing to properly fasten components together.

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

This is a flanged lock nut. It’s designed to apply tension, typically on a joint that needs to have a certain amount of flex. As such, it’s mostly used on snowblower chutes and lawnmower handles. They can remain in place, but with a forgiving connection t

Replaces a stripped, damaged, or missing 5/8" hex flange nut on your lawn mower or snow thrower. Secures blades and other components with integrated washer.

Replacement hex nut for riding mowers and lawn tractors. Secures components together throughout the equipment. Replace when stripped, missing, or damaged.

Split pin fastener for lawn tractors and outdoor power equipment. Secures axles, linkages, and moving parts. Replace when bent, missing, or corroded.

Deck height adjustment gear for lawn tractors and riding mowers. Replaces broken or worn gears that control cutting deck position and leveling.

Spacer that attaches to the idler arm on lawn tractors, creating a smooth surface for proper movement. Replace if worn, cracked, or missing.

Extension spring manages component placement through tension on lawn tractors. Replace if stretched, broken, or losing tension. Verify fit with your model number.

This torsion spring is an authentic OEM replacement part sourced directly from the manufacturer. It is used to hold the idler pulley securely against the belt so that the belt can turn. Over time, the torsion spring may become worn and not function proper

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

Flat washer for lawn mowers and outdoor power equipment. Replaces damaged, missing, or worn washers. Standard hardware component for various models.

Replace the hex screw in your lawn tractor or riding mower. Used to secure various components throughout the machine. Order a new screw if damaged or lost.

Replacement grass chute assembly for lawn tractors and riding mowers. Directs clippings to the side or bag. Replace if cracked, broken, or detached.

This is a shoulder spacer replacement for use with lawn tractors. The shoulder spacer will attach to the deck brake assembly using a hex cap screw. This part can have different applications depending on the type of equipment for which it is being used.The

Shoulder spacer for lawn tractors and riding mowers. Installs between moving parts to reduce friction. Replace if worn, cracked, or missing.

This is a two in one blade that can be used as a lift blade to bag clippings, as well as a side discharge for clippings. It is time to consider replacing this blade when there are uneven or even missed areas of cutting or bagging when using the mower. It

Front deck lift rod for lawn tractors and riding mowers. Connects mower deck to lift mechanism. Replace if bent, damaged, or corroded for proper operation.

If your lawn tractor brake pedal feels loose or brakes won't engage, you may need a new brake rod. This control linkage connects the pedal to the system.

Fix a deck that won't lift or adjust properly. This pivot cup lets the lift arm move freely while staying secured to your mower deck. Easy DIY fix.

This replacement part is a pulley spacer intended for use in different lawn mowers. This is a genuine replacement part made by MTD. Pulley spacers allow the pulley to rotate while providing a gap so that friction does not build up inside the machine and c

Shoulder spacer for lawn tractors and riding mowers. Installs between engine components to maintain proper alignment. Replace if cracked or missing.

A V-belt is used on riding lawn mowers and yard tractors to turn the blades and the accessories of these power tools. The engine pulley, which supplies power, is connected to the cutting deck pulley, which turns the mower blades, with a V-belt. Over time

This part is a replacement idler pulley. This is a genuine OEM part made by MTD and has been sourced directly from the manufacturer. This part can be used to replace a defective or broken idler pulley in a variety of lawn tractor models. Idler pulleys help to guide the engine's drive belt. This part is subject to significant wear and tear over time and may require replacement. Signs that the idler pulley might need replacing include a squealing sound coming from the belt or the pulley being visibly worn. Proper tools are required to install this part. It is always recommended that the appropriate safety precautions are adhered to when attempting to fix any power tools or machinery. For more accurate information on how and where to install this idler pulley, the appropriate owner's manual and included diagrams should be referenced.As an authentic replacement part, this idler pulley is suitable for use on several different models of lawn tractors manufactured by MTD, Troy-Bilt, Yard Machines, Cub Cadet, Husky, and Yard Man. This is a genuine part made of high-quality, durable materials and is sold individually.

Deck spacer that attaches to the mower deck shell to create proper spacing between components and reduce friction. Replace if cracked or missing.

Secures and protects the idler pulley on lawn tractors and riding mowers. Replace if cracked, loose, or missing to maintain proper belt tension.

Protects the mandrel pulley on your mower deck from debris and damage. Replace if cracked, broken, or missing to prevent belt wear. Verify fit with your model.

If your lawn tractor's deck belt is misaligned or slipping off, the deck idler bracket may be damaged. This bracket maintains proper belt tension.

Hex cap screw fastener for outdoor power equipment. Secures components with hexagon-shaped head. Replace if stripped, broken, or missing threads.

Fix wobbling mower blades with this spindle shaft. Common repair for uneven cuts and blade vibration. Moderate DIY with socket set and hammer.

A ball bearing is a common type of rolling-element bearing. It will use balls to keep space between the bearing races and eliminate friction and contact between moving parts. Ball bearings used in lawn and garden equipment ensure that axial loads and radi

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

Lost or broken push cap preventing setting adjustments? This small but essential control cap restores proper function on mowers and tractors. Quick fix.

Torsion spring for lawn tractors and riding mowers. Replaces broken, worn, or missing springs in deck lift or blade engagement systems.

Hinge pin that secures the discharge chute to your mower deck. Replace if pin is lost, broken, or bent. Essential hardware for proper chute operation.

5-inch diameter deck roller wheel for lawn tractors and riding mowers. Replaces cracked, worn, or missing deck wheels that support smooth cutting deck operation.

Shoulder bolt for riding mowers and lawn tractors. Used as an axle for wheels and deck components. Replace if bent, worn, or stripped from regular use.

Nozzle adapter for lawn tractors and riding mowers. Connects hoses or tubes in the fuel or deck wash system. Replace if cracked, stripped, or missing.

Replace a missing, stripped, or damaged shoulder screw on your lawn mower or tractor. This fastener secures components and maintains proper alignment.

This part is a replacement screw. This is a genuine OEM part made by MTD and has been sourced directly from the manufacturer. This part can be used to replace a broken, stripped, or misplaced screw in outdoor power equipment. Screws are critical for holdi

Deflector chute mounting bracket for lawn tractors and riding mowers. Replace this bracket if cracked, bent, or broken to properly secure the discharge chute.

This replacement part is a bagger and is intended for use with lawn mowers. This part is compatible with various kinds of lawn mowers. The bagger is responsible for collecting the leaves and other debris during use so that the user can clean up more easil

Replacement mulch kit for lawn tractors and riding mowers. Converts mower deck to mulching mode. Replaces broken, damaged, or missing mulch kit components.

21.23-inch mulching blade for 42-inch deck lawn tractors. Replace when blade edge is worn, bent, or cracked. Features 6-point star center hole.