721 80043700 Parts

This throttle trigger spring is an OEM part sourced directly from the manufacturer, and it is sold individually. It is manufactured by MTD. This throttle trigger spring is designed for use with edgers or trimmers. It is compatible with products from brands such as Craftsman, Cub Cadet, Ryobi, Troy-Bilt, Murray, Yard Machines, MTD, Bolens, and Yard-Man.The throttle trigger spring part is crucial to the proper functioning of the throttle. The purpose of the throttle trigger spring is to help the throttle trigger to retract. The replacement or repair process of the throttle trigger spring should be straightforward, but a screwdriver and pliers will be necessary to complete the replacement. The user replacing the part should always wear gloves during any assembly, replacement, or installation processes. The user should also refer to the owner's manual of their equipment and any guiding diagrams that clarify the placement location. This throttle trigger spring is made out of metal.

This replacement part is a rope guide, and it is intended for use in different types of lawn equipment. This is a genuine replacement part made by MTD. This rope guide allows the user to pull start the engine. The rope is connected to the transmission inside the engine that allows it to be turned off and on when desired. A new rope guide might be needed if the current one is damaged or missing. If the user is unable to start the lawn mower, then the rope guide might not be connected and should be replaced. Be sure that the engine is completely powered off while attempting this repair as this part is close to the engine inside the appliance. This part is sold individually and is a genuine OEM part sourced directly from the manufacturer to ensure proper fit in all appliances. Reference the owner's manual for more specific guidance.

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.

The sealed ball bearings are used as a means to limit the amount of friction that occurs between a fixed part of the assembly and a rotating shaft. They can be used for numerous applications in lawn and garden equipment. The ball bearings are used in various locations of different types of machines, so the issues that could crop up will vary. Typically, bad ball bearings will create knocking sounds in the engine, or parts in the engine could be difficult to turn. When the ball bearings are no longer sealed or not functioning properly, they should be replaced. This genuine OEM replacement ball bearing is sold individually. The ball bearing works with many models of lawn mowers, snowblowers, edgers, wood chippers, and tillers. Compatible brands include Craftsman, Toro, Cub Cadet, Ryobi, Troy-Bilt, Murray, Yard Machines, MTD, Huskee, Montgomery Wards, Bolens, Yard-Man, Turf King, and MasterCut. Buyers should always ensure they are buying the correct parts for their make and model.

This spark plug is a genuine Husqvarna part, sold individually. This spark plug can be used as a replacement part for outdoor appliances with small engines such as string trimmers and leaf blowers. This spark plug provides an ignition source for the engine.The spark plug might have to be replaced at some point in the standard lifespan of the appliance if it suffers enough damage to render it useless. The spark plug might be cracked, punctured, or eroded enough to reduce its functionality. If this occurs, the spark plug should be removed and replaced with this genuine OEM replacement part before using the appliance again. Remember to wear work gloves as a safety precaution while repairing or replacing parts within an outdoor appliance. This is an OEM part sourced directly from the manufacturer. It is sold individually. This spark plug is compatible with the following outdoor appliance brands: MTD and Craftsman.

This is a replacement screw used to secure appliance components and panels. It restores proper fastening where a stripped, missing, or damaged screw causes loose parts or rattling. What it does:

• Fastens panels, trim, or internal components to maintain structural fit
• Helps stop vibration-related noise from loose assemblies
• Replaces missing or corroded screws that prevent proper closures
• Restores secure mounting after repairs or disassembly

• Use the correct screwdriver or bit to avoid stripping the head
• Tighten until snug—do not over-torque to prevent thread damage
• Keep small parts away from children and pets
• Disconnect power or water before accessing internal parts