Mastercut 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.

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.

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.

Installing a brand-new air filter keeps the engine in top running condition. When the machine is in operation, the vacuumed air goes through the air filter. Any dirt or dust is left in the filter media. Over time, the filter will become dirty and can no longer provide the same filtering efficiency as before. If left ignored, the tiny particles could clog the engine and the carburetor. You may experience misfires and no engine start-up. An air filter replacement is cheap and easy to do. Simply remove the air cleaner cover and take out the dirty filter. Insert the new filter into the housing. This replacement will take less than 5 minutes. A screwdriver will be needed. The MTD 951-10298 Air Cleaner Kit is a genuine air filter from MTD. Each kit comes with one paper filter and one foam filter. The foam filter can be cleaned with water and detergent. The paper filter, however, needs replacement at least once a year. This air filter kit is compatible with Cub Cadet, PowerMore, and Troy-Bilt. It can also work with other garden equipment like wheel string trimmers, chipper-shredder vacuums, and log splitters.

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.

Mowers are manufactured to last for about 500 hours of running, which breaks down to about 19-20 years for the typical non-commercial user. Commercial mowers, which see a great deal more use, are designed to last for 1000 hours of service, which is about 10 years. To extend the life of a lawn mower to its full potential, there are certain simple preventative routines a user can follow, including annual oil and filter changes. One important routine maintenance ritual for mowers that is often overlooked is changing the air filter, something that should be done at least annually. When the mower chugs, cycles, or simply will not start, the first thing to check is the air filter. When replacing the filter, make sure to use a genuine OEM certified replacement part like this one, which is manufactured according to the specification of the original factory filter. This filter is compatible with Bolens, Yard-Man, Troy-Bilt, Yard Machines, and MTD.

This flange lock nut is a metal component used in many types of lawn and garden equipment. It is the part that attaches to the rear wheel to keep it steady on any kind of terrain. It can also be used on handles and chutes for some equipment. The nut size is 3/8 and it has a thread size of 16. Most flange lock nuts will last for years. In some cases, the silicone ring inside the nut will wear down when it is loosened and tightened. When this happens, the flange lock nut will start to move around. It can start as minor slippage but often gets worse over time. It will need to be replaced but this is a simple task. Regardless of what equipment it is attached to, it simply needs to be unscrewed. Take off the old nut and replace it with the new one. This flange lock nut is an authentic OEM product that is sourced directly from the manufacturer. It is sold individually. The lock nut is made for use with lawnmowers, wood chippers, and edgers manufactured by MasterCut, Yard-Man, Bolens, Craftsman, Cub Cadet, Murray, Troy-Bilt, Yard Machines, MTD, and Huskee.

This is a genuine replacement part for a knob-wing on a lawnmower. This part is made of red plastic. The carriage screw for the interior is sold separately.The knob wing is what holds the lever handle to the base of the lawnmower. It holds the unit together so that it doesn't fall apart. The old part can be unscrewed and replaced with this replacement part.This is an OEM replacement part sourced directly from the manufacturer and it is sold individually. It is for use with these brands: MTD, Yard-Man, Troy-Bilt, Cub Cadet, and Husky.

A cotter pin, also known as a hitch pin, is used to secure pins and shafts in place. Meant for snowblowers, riding lawnmowers, and lawn tractors, this bow-tie shaped cotter pin has a double-end design making it easy to pull or push through either side of a pre-drilled hole. This pin snaps into a locked position without tension, keeping it secure during operation. Designed for lawn and garden maintenance equipment, this part ensures secure fastening. If the power equipment is used frequently, cotter pins may have to be replaced regularly so it would be practical to keep extra bow tie cotter pins on hand. It is highly recommended that work gloves be worn during the installation of this part. This part is compatible with Craftsman, Cub Cadet, Troy-Bilt, Murray, Yard Machines, MTD, Huskee, Bolens, Yard-Man, and MasterCut brands of lawn mower, snowblower, and log splitters. This is a genuine OEM replacement part that is sold individually.

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 that can take a beating. The nut size is 3/8, with a thread size of 16. A lock nut will generally last for many years. However, the silicone ring inside will wear down if it’s frequently tightened and loosened. It needs to be replaced when it will no longer reliably remain in place. Generally, this begins as a symptom of slight slippage and worsens as time goes on. Thankfully, whether it’s being used on a snowblower or a lawnmower, this nut is generally straightforward to access. Simply unscrew the old nut, then screw the new nut on until it’s nice and tight. Our flanged lock nuts are genuine OEM MTD nuts, and they are sold individually.

A wing knob is an essential but often overlooked piece of equipment used on many gasoline-powered lawn tools. On snowblowers, this versatile connector is used to adjust the exit chute. The knob handle is easily gripped and made of durable plastic, so when wearing mittens or thick gloves, one can still grasp and turn the wing knob. On many lawn mowers, the wing knob is used to secure and adjust the handle to the mower or, with mowers that have folding handles, to lower and store the handle for ease of transporting the mower. While it does not seem that one would ever need to replace a wing knob, these fasteners may be lost when mowers are moved from one lawn to another or when the mowers are being stored until the next growing season. On rare occasions, the threads in a wing knob can be stripped if they are not turned tightly enough when first fastened after unbending mower handles. These devices are inexpensive and virtually universal, so it is wise to keep an extra wing knob on hand in case one becomes lost. The wing knobs fit Yard-Man, Troy-Bilt, Craftsman, Bolens, and Yard Machine mowers and snowblowers. Made of durable plastic, these OEM knobs are genuine manufactured replacement parts that perfectly match the originals.

A hex screw fastens and holds two components together. It has a hexagonal head and features threading starting underneath the shoulder down to the tip. Its all-metal construction offers rigidity and longer lifespan. It is also threaded, so you can conveniently loosen or tighten in position. It measures 1/4-20 x 0.5 inch and comes in brass or gold color. Take note that this replacement hex screw may beused in different locations of a machine. Double check the device’s model number for compatibility. To install this hex screw, you will need a hex wrench or a hex socket. This hex screw is a replacement made by MTD. This screw/bolt may be used on lawn mowers, snowblowers, tillers, string trimmers, leaf blowers, edgers, chainsaws, pole pruners, log splitters, or wood chippers made by Craftsman, Toro, Cub Cadet, Ryobi, Troy-Bilt, Husky, Murray, Yard Machines, MTD, Huskee, Montgomery Wards, Bolens, Yard-Man, Turf King, or MasterCut. This OEM hex screw is sold individually.

This is a genuine replacement part designed for select lawn mowers and snowblowers. The carriage screw is responsible for securing various components on lawn tractors and snowblowers and has multiple locations and applications on different models. There is a square piece under the head that will fit into a square hole to secure the screw so that the nut can be tightened. This screw can become damaged over time or the threads can wear down with regular use. In some cases, these small screws are lost in the process of performing other repairs. A replacement with this genuine OEM carriage screw can get equipment back in working order. This OEM replacement screw is manufactured to exact standards by MTD. It can be used on hundreds of lawn mowers and snowblowers, including those from MTD, Craftsman, Yard Man, Troy-Bilt, Bolens, Yard Machines, Husky, and Cub Cadet. Since this part has multiple applications, users should refer to parts diagrams for exact location and replacement procedure. This durable screw is made of high-quality metal and sold as an individual unit. Those who need more than one will have to purchase multiple quantities.

The torsion spring is designed to create tension between various components in lawn and garden equipment engines. This spring may have multiple applications depending on the type of machine. The torsion spring typically connects levers and other things that need pressure to operate properly. They create torque and help support various items in lawn and garden machines. Over time, they can become worn or the springs can stretch or snap. This will require a replacement of the entire spring, since the unit will typically not be able to function without a properly working torsion spring. This genuine OEM replacement spring is manufactured to exact standards by MTD. This part can be found in hundreds of models from MTD, Yard Machines, Cub Cadet, Troy-Bilt, Husky, Bolens, and Yard-Man. Check the parts diagrams and equipment manual for the exact location and application of this torsion spring. This high-quality spring is made of metal and is sold as an individual unit. Always wear gloves when performing repairs on lawn and garden machines. Beware of pinching and crushing injuries when working with springs, which are typically under a lot of pressure.

This is the front wheel assembly that is used by a large number of manufactures as the standard wheel for push mowers. This wheel is a tough, black rubber wheel fitted onto a sturdy white chassis. Since it is not a pneumatic wheel, there is no concern that it will roll over hidden debris and be damaged. Push wheels such as these often last the lifetime of a Lawn Mower. However, there are occasions when the housing of the mower is dropped and the wheel becomes warped or broken. It's also the case that, with constant use, the wheels can lose tread, making them harder to maneuver in tough mowing conditions. It has also been reported that the tires will wear and become smaller in circumference over time, meaning it will require more gasoline to mow the same amount of yard. The front wheels are easily replaced. After removing the plug cap and stabilizing the mower, simply use a socket wrench to remove the center bolt from the wheel. It's a good idea to use a dry lubricant like graphite on the axle before replacing it. This OEM guaranteed replacement part is compatible with Ryobi, Yard Machines, Troy-Bilt, Cub Cadet, Husky, Yard-Man, and MTD push mowers.