Troy-Bilt String Trimmer Parts

A flange nut's unique wide flange design distributes the nut's pressure over the part it is securing. In return, it creates an even fastening surface, which reduces part damage and nut loosening. This one-piece all-metal fastener has a lock nut version that features a protruding circular flange. This drastically increases bearing surface, compatibility either for irregular or oversized holes, and surface tension reduction. Flange lock nuts are the preferred type of fastener for many lawnmower models because it can provide better fastening than regular screws, which are known to loosen under extreme vibration. However, it’s important to know that flange lock nuts are susceptible to wear and tear due to constant vibration exposure. It is essential to replace the broken flange lock nut immediately to prevent serious damage to the lawnmower. The MTD 712-04063 Flange Lock Nut OEM replacement can be used with Craftsman, White Outdoor, Yard Machines, MTD, or Columbia lawnmowers. It is a genuine or OEM MTD replacement part that measures 5/16-18. It is threaded and requires the use of a wrench. This replacement flange lock nut is sold individually. An MTD bolt carriage may also be needed and is sold separately.

This ground drive belt works to drive the transmission, which turns the wheels of the lawn maintenance equipment. The ground drive belt might be attached in a way that transfers the engine’s power to the pulley in charge of spinning the blades instead. Ground drive belts are made from a flexible rubber that can become brittle, cracked, or broken over time. The replacement of the ground drive belt will require a wrench to complete. This ground drive belt is compatible with Bolens, Craftsman, Ryobi, MTD, Troy-Bilt, White Outdoor, Yard Machines, and Yard-Man brands. It can be placed in lawnmowers, tillers, chipper shredders, leaf blowers/vacuums, edgers, log splitters, snowblowers, trimmer, and other lawn and garden equipment. This ground drive belt is a genuine OEM part.

A carburetor needs fuel to produce the required combustible mixture of air and gas. To get fuel, the carburetor draws the liquid directly from the fuel tank. Any excess fuel will be returned to the tank through the fuel return hose or fuel return line. In addition to providing the path, a fuel line is also responsible for preventing over-pressurization, as well as vapor lock. A fuel return line is constructed from a thick rubber material that is also fuel resistant. However, it may still become brittle and crack due to regular wear and tear. Usually, a broken fuel return hose results in symptoms such as engine misfires, loss of power, carburetor flooding, fuel leaks, and hard starting. A brand-new replacement is available here. This fuel line return is an original part from MTD. It measures 3.78 x 3.78 x 0.016 and is compatible with tillers, leaf blowers, and string trimmers made by Craftsman, Ryobi, Yard Machines, MTD, Bolens, and Yard-Man. Installation will require a screwdriver, cutters, and pliers. This fuel line return is sold individually.

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 nut may begin to weaken and may become loose or break. If it appears to be broken or weak, a replacement is required. Flange locks can be adjusted and uninstalled after use. When replacement is required, you may need a socket set, screwdriver, hacksaw, and butane torch. The socket wrench will loosen the bolt it is connected to, while the torch is used to heat the lock nut. A socket wrench may remove the nut, but sometimes cutting it with a hacksaw is required. This flange lock nut is a genuine OEM component directly from the manufacturer and comes in an individual unit. It is made of metal, a gold color, and can be found in various areas of lawn equipment. It works with lawnmowers, trimmers, snowblowers, cultivators, tillers, and leaf blowers by Poulan, MTD, Toro, Cub Cadet, Murray, Troy-Bilt, Bolens, Yard Machines, Craftsman, and Yard-Man.

A carburetor gasket is a thin rubber material that provides a seal between two parts. Its primary purpose is to prevent fuel and air leaks. This gasket is installed between the air cleaner and the carburetor. Over time, it can crack and tear due to heat and fuel exposure. When this happens, the carburetor may produce the wrong combustible mixture for the engine. In return, the engine may experience rough idling and flooding. A carburetor gasket replacement is necessary. MTD makes this carburetor gasket replacement. It is manufactured to fit string trimmer, leaf blower and tiller made by MTD, Bolens, Troy-Bilt, and Craftsman. This brand-new carburetor gasket is sold individually. A fully assembled carburetor and O-ring are sold separately.

This is a replacement spark plug that is designed specifically to be used with select string trimmers. the spark plug is connected to the ignition module and is responsible for creating the spark that starts the internal combustion engine. Over time, the electrode on the spark plug will wear down. Other issues can also arise that cause the spark plug to foul or stop working. Spark plugs are part of routine maintenance on any engine, but most owners keep a spare or two around just in case of emergencies. In the event that the spark plug is bad, the engine will not start. This genuine OEM spark plug is manufactured by MTD and designed for use in select trimmers. It is compatible with over 50 models of string trimmers from MTD, Bolens, Murray, Troy-Bilt, Yard Man, and Cut Cadet. Owners will need to consult their product diagram or manual to find the exact gap for the spark plug when replacing them. Many models claim to come pre-gapped, but they can settle during shipping and should always be re-gapped prior to installation. This is sold as an individual unit. Be sure to wear gloves for hand protection when replacing spark plugs and performing other maintenance.

The Hex Head Self-Tapping Screw is an OEM part for MTD outdoor power equipment. This screw is designed to securely fasten components of your equipment, providing reliable and durable connections. The thread size is 5/16 inches for major diameter, with 18 threads. The screw is 3/4 inches long and has a hexagonal or six-sided head. 

Over time, the Hex Head Self-Tapping Screw can become damaged due to corrosion, stripping of the threads, or wear from frequent tightening and loosening. This can compromise the integrity of the connections and potentially lead to equipment malfunction.

Symptoms of a bad Hex Head Self-Tapping Screw include:

• Loose or wobbly components
• Difficulty tightening or loosening the screw
• Visible damage or corrosion on the screw

This OEM replacement part is designed for use with various models of MTD outdoor power equipment.

These O rings are replacement parts intended for use in a number of gasoline-powered lawn trimmers. The O rings serve as gaskets and are placed at the entry and exit points in the carburetors where gasoline and air are mixed and the expansion powers the trimmer. Though constructed of durable material, periodically the flow of the air/fuel mix or the rush of expanding air will cause damage to occur to the O rings so they become less resilient and the carburetor functions less efficiently. In these cases, users often decide to replace not just the element of the carburetor but the O rings as well. Users may notice problems with the carburetor when they cannot get an adequate adjustment, allowing the trimmer to function smoothly. They may also have trouble getting the trimmers to start at all or run without smoking. To replace the O rings, remove the air filter cover and carburetor. Once the carburetor has been cleaned, and the gasket and filter replaced, add a fresh mix of 40:1 fuel. The trimmer should start immediately. These OEM certified O rings are compatible with Bolens, Troy-Bilt, Yard Machines, and Craftsmen trimmers.

A bump head knob is a part of a string trimmer. When the trimmer is tapped against the ground or any hard surface, it will let out more line. This component, which is primarily made from rubber, is also responsible for securing the spool to the trimmer head. Over time, a bump knob can break. If it is damaged, the trimmer won't release more lines. It is easy to install a brand-new bump head knob replacement. First, get a screwdriver and unscrew the old bump knob. Grab the replacement and screw it to the trimmer head. Tighten it for a secure fit. This replacement only comes with a bump head knob. It doesn't have other string trimmer replacement parts. For an efficient, compatible part replacement, choose this MTD 791-153066B Bump Head Knob. You can use it with string trimmer models made by MTD, Bolens, Yard-Mad, Yard Machines, Craftsman, Troy-Bilt, and Ryobi. It is a genuine OEM part that is sold individually.

This fuel tank assembly from MTD is a genuine replacement part. It is a fuel reservoir made from a thick and durable plastic material. It is designed to fit and work with tillers, edgers, and string trimmers from MTD, Craftsman, Cub Cadet, and Yard Machines. When this fuel tank wears out, liquid may seep out and waste gas. A fuel tank assembly replacement is easy. The process will take approximately 30 minutes or less. First, make sure that the machine has cooled down and there is little fuel left in the tank. Make sure to wear gloves since fuel spills can occur, especially when removing the fuel lines. Then, remove the spark plug connector to prevent the engine from starting. Disconnect the fuel line and unfasten the mounting screws of the fuel tank. Install the fuel tank and attach the fuel line. This replacement fuel tank assembly is sold individually. The assembly includes the tank, fuel cap, and one fuel line. It is an original replacement made directly by MTD.

The Clutch Assembly is an OEM part for MTD outdoor power equipment. This assembly is used in various lawn and garden machines to engage and disengage the power from the engine to the drive mechanism, allowing for controlled operation of the equipment.

Causes of a bad clutch assembly can include wear and tear from regular use, exposure to extreme temperatures, or damage due to improper handling or maintenance. A malfunctioning clutch can lead to poor performance and control of the equipment.

Symptoms of a bad clutch assembly include:

• Difficulty in engaging or disengaging the drive mechanism
• Slipping or jerky movements during operation
• Unusual noises when the clutch is engaged
• Loss of power transmission from the engine to the drive components

This MTD replacement part is also compatible with other brands and models within the MTD family, ensuring a wide range of applicability for your outdoor power equipment needs.

A star knob connects the upper and lower handles on an outdoor appliance, and if removed, the upper and lower handles are quick-released. This part is made of black heavy-duty black plastic, and the threads are made of steel. Over time, the threading can become worn out, making the connection loose, and causing the two handles to no longer stay in place. Star knobs are a straightforward repair that can be done in a matter of minutes. Just unscrew the original, damaged knob and screw in the new knob. The knob is designed to be unscrewed by hand, so there is no need for additional tools to make this repair. This genuine OEM replacement part is designed for a variety of outdoor appliances, including lawnmowers, edgers, chippers, tractors, trimmers, and cultivators. This star knob is compatible with Yard Machines, Yard-Man, Cub Cadet, Bolens, Craftsmen, and Ryobi products. This part ships individually.

This is an air filter cover that can be used on many types of handheld tools for the yard and garden. The air filter is a component that keeps dirt, debris, and other things out of the engine by pulling these contaminants into the filter. The air filter housing sits on top of the filter and helps protect it from damage. The air filter cover can break or become damaged through wear and tear or impact to the cover. This may create breakages or cracks and the air filter cover will need to be replaced. A pair of work gloves and a screwdriver will be needed to make the replacement. Take out the screws on the current air filter cover and remove it before attaching the replacement component.This air filter cover is an authentic OEM component that is sourced directly from the manufacturer. It is sold individually. The cover is designed for use with lawnmowers, leaf blowers, and string trimmers manufactured by Yard-Man, Bolens, MTD, Yard Machines, Troy-Bilt, Ryobi, Cub Cadet, and Craftsman.

A lower flexible drive shaft is located inside lawn trimmer attachments. It is mounted inside the lower boom housing. The function of the part is to drive the trimmer head. The drive shaft will deteriorate and become more round with use. The rounded ends will ultimately fail to engage the trimmer head. The lower flexible drive shaft may also break or kink. The trimmer head stops quickly when this occurs. The trimmer will no longer function properly, and a replacement part is required.When replacing the lower flexible drive shaft in a trimmer, wear protective gloves. Start by removing the trimmer head, reel, and line assembly. Use a screwdriver to remove the outer head. Remove the guard assembly. Remove the bushing housing assembly. Access the lower flexible drive shaft and remove the damaged part. Lubricate the new part and install it with the lower flexible drive shaft's ring closest to the trimmer head. Reassemble the trimmer.This replacement part is an OEM genuine part supplied by the manufacturer. The lower flexible drive shaft can be used in MTD, Cub Cadet, Troy-Bilt, and Craftsman brand lawn trimmers. The part is sold individually. The lower flexible drive shaft is made of durable materials.

The inner spool reel is a genuine replacement part for select models of string trimmers. The inner reel is where the string for the trimmer is wound. Once the string has been wound around the reel, it is attached to the outer spool assembly and then threaded onto the trimmer and secured in place. This part is regularly exposed to repetitive motion and ground contact, and it can become damaged with use and require a replacement. With a genuine OEM part, owners can guarantee an exact fit for their compatible machines. This inner reel is manufactured to specific standards by MTD for use on hundreds of trimmers, including those from MTD, RYOBI, Cub Cadet, Yard Man, Bolens, Yard Machines, and Troy-Bilt. This reel does not require any tools to install. Use caution when winding the trimmer line so as not to create tangles that could jam the trimmer while it is being used. Disengage the engine before working on trimmers and always wear eye and hand protection for added safety. This inner reel is made of durable plastic and sold as a single unit. Other components will need to be purchased separately.

This is a wheeled string trimmer belt compatible with many brands. The belt's purpose is to drive the unit, transferring power from the engine to the cutting head. Over time, belts are subject to wear and tear, heat, and humidity. This can make the belt brittle and eventually it will snap. In other instances, belts will stretch after being used for long periods and need to be replaced. Replacing the belt is a simple process. Start with the engine off and the spark plug disconnected. Remove the screw holding the chassis cover in place and then the screws holding the debris shield. With the debris shield out of the way, the belt should be clearly visible. Remove the engine pulley, but make sure to note the pulley's position for replacement. Install the new belt and reassemble the trimmer. This part is a genuine OEM part sourced directly from the manufacturer and sold individually. This belt is compatible with Craftsman, Bolens, Remington, Ryobi, and Yard-Man brands.