Parts for Ryobi 704R: Engine Parts

This muffler cover assembly is a genuine MTD part, sold individually. This muffler cover assembly can be used as a replacement part in a variety of small engine outdoor appliances including tillers, string trimmers, and leaf blowers. The purpose of the muffler cover assembly is to provide a safe housing for the muffler so that the muffler does not suffer damage as the outdoor appliance is in operation.If the muffler cover assembly is punctured, torn, scraped, dented, warped, eroded, or otherwise damaged to the point that the muffler is exposed to potential damage, the muffler cover assembly should be removed and replaced by this genuine OEM replacement part. Remember to always wear gloves when handling, repairing, and operating outdoor equipment.This is a genuine OEM replacement part sourced directly from the manufacturer. It is sold individually. This muffler cover assembly is compatible with the following outdoor appliance brands: MTD, Cub Cadet, Craftsman, Ryobi, Troy-Bilt, Yard Machines, Huskee, Bolens, and Yard Man.

This piston ring set is a genuine MTD part, sold individually. This piston ring set can be used as a replacement part for outdoor appliances with engines such as snowblowers, tillers, string trimmers, leaf vacuums, and leaf blowers. Piston rings prevent fuel leakages while fuel is being taken in by the engine or while the flow of fuel is being regulated. Piston rings might have to be replaced if they are damaged, which can happen with prolonged use. If a damaged piston ring is not immediately replaced, it could result in oil leakages, which can cause more severe damage to hard-to-replace internal components. Damaged piston rings should be replaced immediately upon signs or symptoms of damage. Remember to always wear gloves when handling, repairing, and operating outdoor equipment. This is an OEM part sourced directly from the manufacturer, and it is sold individually. This piston ring set is compatible with the following brands: MTD, Craftsman, Cub Cadet, Ryobi, Troy-Bilt, Yard Machines, Bolens, and Yard-Man.

This part is a replacement choke lever. 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 or defective choke lever in outdoor power equipment.The choke lever is important to the functionality of the choke, which enables the user to enrich the fuel mixture in an internal combustion engine. This lever will need to be replaced if broken, snapped, corroded, or otherwise faulty. It's important when working on or near to an engine to make sure the equipment is powered off and completely cooled down before starting any repairs. For more accurate information on how and where to install this choke lever, the appropriate owner's manual and equipment diagrams should be utilized.As an authentic replacement part, this choke lever is suitable for use on several outdoor power equipment manufactured by MTD, Craftsman, Troy-Bilt, and other brands. Please This is a genuine part made of high-quality, durable materials and is sold individually.

This genuine MTD carburetor assembly can be used as a replacement part for a string trimmer, a tiller, a leaf blower, or a leaf vacuum. The carburetor assembly contains a replacement carburetor and its components that combine to attach the carburetor within the small engine of the appliance. The function of the carburetor is to create a blend of the external fuel and air and use that blend to ignite the spark plugs and start up the engine.A carburetor that suffers damage that affects the appliance's ability to operate smoothly should be replaced. Symptoms of a failing carburetor include black or white smoke pouring from the exhaust, a misfiring or stalled engine, or unusually rough riding with poor traction. If this is the case, a replacement carburetor assembly such as this OEM part should be ordered. Remember to always wear gloves when handling, repairing, and operating outdoor equipment. This is an OEM part sourced directly from the manufacturer. It is sold individually. This carburetor assembly is compatible with the following brands: MTD, Ryobi, and Yard Man.

This is a genuine replacement for MTD engines in select models of lawn and garden equipment. The carburetor gasket is situated between the carburetor body and the engine to provide a secure seal to keep air from leaking out. The engine needs proper compression to run and that is ensured by gaskets and seals like this one. Over time, however, these are exposed to constant heat and pressure and can shrink or become damaged as a result. Replacing gaskets is typically considered a part of routine maintenance on most equipment. Gaskets should be replaced immediately when they fail, and inspected any time work is done on the carburetor. This OEM carburetor gasket is designed to work with more than 150 different models of blowers, trimmers, cultivators, and edgers. It can be used in products from brands like MTD, RYOBI, Bolens, Troy-Bilt, Cub Cadet, Husky, Yard Man, and Yard Machines. The gasket is made of durable metal material and is sold as a single unit. Hardware is not included with this item. Be sure to cool the engine before performing repairs and drain the fuel system to prevent leaks and spills when working on the carburetor and its components.

A shoulder strap is a strap made to be attached to machinery in order to make the use of the machine easier, less awkward, and more comfortable for the user. It designed for use with outdoor lawn and garden equipment such as string trimmers, leaf blowers, and pole pruners. Fortunately, if a shoulder strap breaks, it will be very obvious and is easily fixed. Signs of a faulty shoulder strap include frayed edges, worn or thin fabric, or faulty attaching mechanisms holding the strap to the machine. The replacement or repair process is incredibly simple, as it requires no technical savvy or internal part replacement. Everything requiring replacement is visible from the outside of the machine.This shoulder strap is also sometimes referred to simply as a backpack harness assembly strap. The purchase of the shoulder strap does include any necessary mounting hardware needed to attach it to outdoor equipment. The shoulder strap is built to last and create a more pleasant experience while using a blower, vacuum, or pruner.This shoulder strap is a genuine OEM part sourced directly from the manufacturer, and it is sold individually. In most cases, since each strap is sold separately, if the user prefers to attach the shoulder straps in a way that resembles a backpack or harness instead of just a single shoulder strap, the purchase of two separate shoulder straps will be necessary. This particular backpack harness assembly strap is compatible for use with machines made by Craftsman, Ryobi, Troy-Bilt, Yard Machines, MTD, Bolens, and Yard-Man.

A carburetor may dry up after prolonged periods of inactivity, causing problems starting the engine. If this happens, the carburetor will need to be primed. Priming is adding fuel to the carburetor. Most lawnmowers have a priming bulb so you don't have to pour gas into the carburetor manually. This component is usually a small rubber button, which suctions fuel from the tank. To activate it, simply press it several times. If it fails to draw fuel, then a primer bulb may be needed. Primer bulbs can deteriorate due to old age, repeated use, and exposure to chemicals and the environment. For worry-free machine compatibility, choose this Primer Bulb & Hose Assembly made by MTD. It will work with trimmers, leaf blowers, and string trimmers from MTD, Bolens, Yard-Man, Craftsman, Ryobi, and Huskee. The assembly comes with one primer bulb and one hose. Extra fuel lines are available but sold separately.

This is an OEM replacement crankcase gasket for use in select MTD lawn and garden equipment engines. The crankcase gasket is responsible for creating a seal between the crankcase and the carburetor mount. This prevents air and fuel from leaking out or getting oil mixed into the carburetor. The gasket is under high pressure at all times and can become brittle or break with age, which will need a replacement. It is important to use genuine OEM parts like this one, which is manufactured to specific standards. It is compatible with machines from MTD, RYOBI, Troy-Bilt, Yard Machines, and Yard-Man. This gasket can be used on select models of blower/vacuums, trimmers, edgers, and tillers. It is sold as an individual unit and does not include any hardware or additional parts. To replace this gasket, the engine will need to be completely cooled and gloves should be worn. The crankcase cover will need to be detached from the carburetor assembly, allowing the old gasket to be removed. The new gasket can be put into place and the cover can be reattached. Then, the entire unit can be reassembled and it will be ready to go.

This fuel cap assembly fits on the lawn tractor fuel tank to keep the fuel inside and debris outside. The part is red and has a gas pump embossed on it for added identification. The top of the cap also features vent slots to allow hot air to escape and prevent heat expansion. It features a gasket under the cap to keep gas from sloshing out during operation. The fuel cap assembly is made of heavy-duty plastic that can fade and crack due to the elements. Removal and replacement are as simple as taking the old cap off and putting the new cap on. Hand-tighten to prevent gas from leaking. Never over-fill the fuel tank. Leave room for the oil additive if it is not mixed before fueling. This fuel cap assembly is a genuine OEM replacement part sourced directly from the manufacturer. It is sold as an individual unit. This fuel cap is designed for use in lawnmowers and lawn tractors manufactured by MTD, Ryobi, Troy-Bilt, Bolens, Yard-Man Yard Machines, Cub Cadet, and Murray.

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 lawnmower’s fuel line or a fuel hose brings the fuel from the tank to the carburetor. It is made of durable translucent plastic material. When pushing the primer bulb, the gas from the tank will travel through the fuel line and to the carburetor. Once there is enough fuel, any excess will go to the return line and into the tank. Fuel lines are made from sturdy rubber or plastic. Over time the fuel line can crack and begin to leak. There are few symptoms of a broken fuel hose. One of the easiest ways to tell is if the hose has visible exterior cracks. Other warning signs include fuel smell and fuel leaks. Installing a new fuel line is easy and doesn't require any tools. Detach the old fuel pipe and insert the new replacement. This MTD 791-682039 Fuel Line Assembly OEM Replacement is an original four fuel line assembly compatible with Yard Machines, Yard-man, Ryobi, and Bolens. This replacement fuel line does not include the primer bulb and fuel return line. You need to purchase these parts separately.

This is a cylinder assembly that is designed for use in various lawn and garden small engines. The cylinder assembly is a component of the starter assembly and engine. Problems with engine compression are usually the result of the cylinder assembly going bad and needing to be replaced. If the cylinder assembly is not working, the engine may not work at all. One test of the cylinder assembly is to cover the cylinder hole with a finger and pull the starter rope. If the cylinder is not working correctly, no air will come through the hole.If the cylinder assembly is not functioning, it needs to be replaced. The engine will need to be taken apart to get access to this assembly so that it can be removed and replaced. This repair requires work gloves and a basic toolset. Never work on hot engines and make sure the spark plug is removed before working on the machine.This cylinder is an authentic OEM replacement part that is directly sourced from the manufacturer. It is sold as an individual component. The cylinder assembly is designed to fit blowers, cultivators, edgers, trimmers, and vacuums manufactured by Ryobi, Troy Bilt, MTD, Yard Machines, and Bolens.

This recoil starter pulley is a genuine MTD part, sold individually. This recoil starter pulley can be used as a replacement part for outdoor appliances with engines such as snowblowers, tillers, string trimmers, leaf vacuums, and leaf blowers. The recoil starter pulley fits into the recoil pull-start mechanism such that when the starter rope is pulled, the cord moves around the recoil starter pulley, and the engine is powered on. If the spring that holds the pulley in place suffers damage that loosens its tension, the pulley could fall out of position. Additionally, the pulley could corrode or wear down with long-term use, weakening it beyond functionality. If this damage seems imminent, this recoil starter pulley should be ordered as a genuine OEM replacement part immediately. Remember to always wear gloves when handling, repairing, and operating outdoor equipment. This is an OEM part sourced directly from the manufacturer, and it is sold individually. This recoil starter pulley is compatible with the following brands: MTD, Ryobi, Troy-Bilt, Yard Machines, Bolens, and Yard-Man.

This is a genuine replacement recoil spring that is designed to be used with select lawn and garden equipment engines. The recoil spring is part of the starter pulley assembly. When the starter rope is engaged, the pulley will then engage the recoil spring, which retracts to cause the spinning that helps power the engine. This spring is subject to constant use and can become stretched or even snap over time and with regular use.This genuine OEM recoil spring is manufactured by MTD and designed to exact standards. It can be used in models from MTD, as well as those from RYOBI, Troy-Bilt, Yard Man, Yard Machines, and Bolens. The recoil spring is made of durable metal and sold as an individual part. The rest of the starter components will need to be purchased separately if they need replaced. Always wear gloves when performing engine repairs and be careful when working on the starter system because the springs and pulleys can be under a lot of pressure. Allow the engine to cool completely and disconnect the power before getting started.

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.

This starter rope is made for use with many types of lawn and garden equipment, such as string trimmers and leaf blowers. The rope wraps around the starter pulley and can be pulled manually to cause the engine to start running. With wear and tear through use, the starter rope can start to fray. If the rope isn't replaced when fraying, it can also break and render the equipment no longer usable until a replacement part has been installed.The most common symptom of a broken or worn starter rope is an issue when trying to start the engine. The rope will be pulled, and the rope will keep coming out of the machine instead of turning on the engine. Before replacing the starter rope, remove the spark plug wire to prevent the engine from starting. The starter rope can be removed and a new component installed in its place.This is an authentic OEM replacement part that is sourced directly from the manufacturer. It is sold as a single starter pull rope. This rope is made for use with string trimmers, leaf blowers, snowblowers, lawnmowers, and tillers created by MTD, Craftsman, Cub Cadet, Murray, Yard Machines, Bolens, Troy-Bilt, Ryobi, and Yard-Man.

Few parts fulfill as many roles on lawn mowers and other landscaping power tools than the cover screw. This screw serves to attach metal housing parts, assemblies, and shrouds to one another on equipment such as power vacuums, snow blowers, edgers, tillers, hedge trimmers, lawn tractors, leaf blowers, grass trimmers and cultivators. As these are extremely durable metal screws, they seldom fail under ordinary use. It should be noted, however, that they are most often used at connection and pressure points. Stresses at these junctions sometime loosen screws, causing them to be lost or occasionally resulting in stripped threads. It's also occasionally the case that these screws are lost during repair or routine maintenance of yard equipment because of their small size. Users should make sure to consult their owner's manuals for replacement steps and any special instructions. Because of their small size and the ease of losing them during repair work or maintenance, it's recommended to keep a supply of appropriately sized screws on hand. Most importantly, when replacing a part make sure to use a genuine OEM replacement part. They are manufactured according to the specs of the original parts and are perfect replicas.

This is a genuine replacement screw designed for use in select MTD engines on lawn and garden equipment. Specifically, this is an anti-rotation screw, which is used to stop the drive shaft housing from turning inside of the main housing assembly. This screw is a small part that is subject to constant vibrations, pressure, and high temperatures. It can sometimes become worn or damaged as a result or even break off entirely, which would mean that the inner housing would no longer be held in place accordingly. If this screw is damaged or lost, it needs to be replaced with a genuine OEM replacement as soon as possible. This MTD anti-rotation screw is manufactured with high-quality materials and designed for use in select trimmers from MTD, RYOBI, Yard-Man, Troy-Bilt, Murray, Cub Cadet, Yard Machines, and Bolens. This replacement will require a screwdriver. Simply remove the damaged screw, if it is not already missing, from the clutch cover assembly, and then install the new screw. It should only take a few minutes to perform the replacement. Be sure to wear gloves to protect the hands. This screw is sold individually and does not include any additional parts or hardware.

This is a spark plug that is used in many types of lawn and garden equipment, such as leaf blowers and tillers. It is a part of the main working of the tool and ensures the motor can run so the equipment can be used. The purpose of the spark plug is to ignite a mixture of air and fuel found inside the combustion chamber of the engine. If this part is damaged or has been lost, the engine will no longer start so the spark plug will need to be replaced.If the spark plug needs to be replaced, work gloves and basic tools may be needed. Move the tool to a level surface and make sure it is turned off. Disconnect the spark plug wire before removing it. Use a spark plug gauge to adjust the gap before installing the new part and using the tool.This part is designed to be compatible with trimmers, tillers, and leaf blowers manufactured by MTD, Ryobi, Yard-Man, and Troy-Bilt. The spark plug is sold as an individual part. It is a genuine OEM replacement component that is directly sourced from the manufacturer.

This muffler assembly is a genuine MTD part, sold individually. A muffler assembly can be used as a replacement part in a string trimmer or a leaf blower. The purpose of this genuine OEM part for one of these outdoor appliances is to reduce noise made by the motor while the blower in use.The muffler assembly in a string trimmer or a leaf blower can become damaged throughout its typical lifespan, and if this damage necessitates a complete replacement of the part, the muffler assembly should be removed and replaced with this genuine OEM replacement part as soon as possible. This component is a genuine OEM replacement part sourced directly from the manufacturer. It is sold individually. This muffler assembly is compatible with the following outdoor appliance brands: MTD, Craftsman, Cub Cadet, Ryobi, Troy-Bilt, Yard Machines, Bolens, and Yard Man.

This spark arrestor is a genuine MTD part, sold individually. This spark arrestor can be used as a replacement part for the engines of outdoor appliances such as snowblowers, tillers, string trimmers, leaf vacuums, and leaf blowers. The spark arrestor is a safety precaution for such outdoor appliances; it is used to trap and dispel potentially flammable external materials, such as debris and dirt, from the internal combustion engine. A spark arrestor might have to be replaced if it is no longer able to keep flammable materials out of the combustion engine. This could occur as a result of damage to the spark arrestor after it is worn down or has suffered warping or tearing as a result of a direct impact collision or overexposure. If this is the case, the spark arrestor should be replaced with this genuine OEM replacement part. Remember to always wear gloves when handling, repairing, and operating outdoor equipment. This is an OEM part sourced directly from the manufacturer, and it is sold individually. This spark arrestor is compatible with the following brands: MTD, Ryobi, Troy-Bilt, Bolens, Craftsman, Yard Machines, and Yard-Man.

This is a cylinder assembly that is designed for use in various lawn and garden small engines. The cylinder assembly is a component of the starter assembly and engine. Problems with engine compression are usually the result of the cylinder assembly going bad and needing to be replaced. If the cylinder assembly is not working, the engine may not work at all. One test of the cylinder assembly is to cover the cylinder hole with a finger and pull the starter rope. If the cylinder is not working correctly, no air will come through the hole.If the cylinder assembly is not functioning, it needs to be replaced. The engine will need to be taken apart to get access to this assembly so that it can be removed and replaced. This repair requires work gloves and a basic toolset. Never work on hot engines and make sure the spark plug is removed before working on the machine.This cylinder is an authentic OEM replacement part that is directly sourced from the manufacturer. It is sold as an individual component. The cylinder assembly is designed to fit blowers, cultivators, edgers, trimmers, and vacuums manufactured by Ryobi, Troy Bilt, MTD, Yard Machines, and Bolens.