John Deere 724D Manual: A Comprehensive Guide

About the John Deere 724D Snowblower

Model Specifications and Features

The John Deere 724D snowblower is a robust and reliable machine designed for demanding snow removal tasks. This model boasts a powerful engine, typically a gasoline engine with a displacement ranging from 200cc to 250cc, providing ample power to chew through heavy, wet snow. The 24-inch clearing width allows for efficient snow removal on driveways and sidewalks, while the two-stage design ensures optimal performance. The first stage, the auger, breaks up the snow, and the second stage, the impeller, throws the snow a considerable distance, often up to 30-40 feet, depending on conditions. Key features include electric start for easy cold-weather starts, multiple speed settings for adjusting to varying snow conditions, and a chute rotation system for precise snow placement.

Beyond raw power, the 724D incorporates features designed for operator comfort and convenience. The adjustable skid shoes allow you to customize the height of the snowblower, preventing damage to the surface underneath, whether it's asphalt, concrete, or gravel. The heated hand grips, often an optional or premium feature, provide added warmth and comfort during extended operation in frigid temperatures. Furthermore, the easy-to-use controls, including a single-hand operation option on some models, contribute to reduced operator fatigue and increased maneuverability, especially in tight spaces. Solid steel construction and durable components ensure the 724D can withstand years of rigorous use.

Safety Precautions and Warnings

Operating a snowblower, including the John Deere 724D, requires strict adherence to safety guidelines to prevent serious injury. Before starting the engine, thoroughly inspect the area to be cleared for any obstacles, such as rocks, toys, or extension cords. These items can become projectiles when caught in the auger, posing a significant risk to people and property. Always wear appropriate personal protective equipment (PPE), including safety glasses or goggles to protect your eyes from flying debris, and sturdy footwear to maintain a firm grip on slippery surfaces. Hearing protection is also recommended, especially during prolonged operation, as snowblowers can generate considerable noise.

Never attempt to clear a clogged discharge chute while the engine is running. Instead, shut off the engine, wait for all moving parts to come to a complete stop, and use a dedicated clean-out tool to dislodge the obstruction. Avoid operating the snowblower on steep slopes or near drop-offs, as this can increase the risk of losing control. Be particularly cautious when operating near vehicles, buildings, or other obstacles, and always be aware of your surroundings. Regularly inspect the snowblower for any signs of damage or wear, and promptly address any issues to maintain safe and reliable operation. Furthermore, ensure that all safety shields and guards are properly installed and functioning correctly before each use.

Operation

Pre-Operation Checks

Before each use of your John Deere 724D snowblower, a thorough pre-operation check is critical for ensuring safe and efficient performance. This process involves visually inspecting the machine for any signs of damage, leaks, or loose components. Pay close attention to the condition of the tires, ensuring they are properly inflated and free from cuts or punctures. Equally important is the inspection of all belts and chains for wear or damage. A worn belt or a loose chain can significantly impact the snowblower's performance and potentially lead to costly repairs. Take the time to meticulously review each area, rectifying any issues before starting the engine to guarantee a smooth and trouble-free operation.

Furthermore, check all fluid levels, including the engine oil, hydraulic fluid (if applicable), and fuel. Insufficient fluid levels can lead to engine damage or reduced performance. Always use the recommended type and grade of fluids as specified in the owner's manual. Inspect the auger and impeller for any obstructions, such as rocks or debris, and remove them promptly to prevent damage to the snowblower. Finally, test the controls to ensure they are functioning correctly. This includes the throttle, choke, and directional controls. A malfunctioning control can be dangerous, especially in adverse weather conditions. Performing these pre-operation checks will help you avoid breakdowns, extend the life of your snowblower, and most importantly, keep you safe.

Starting and Stopping Procedures

The starting procedure for the John Deere 724D should always begin with a comprehensive safety assessment of your surroundings. Ensure that there are no people, pets, or objects within the immediate vicinity of the snowblower that could be harmed during operation. Position the snowblower on a level surface to prevent accidental movement when starting. Consult your owner's manual for the specific starting procedure that applies to your model, as variations may exist based on the engine type and year. Generally, you'll want to engage the choke (if equipped), turn the ignition key, and pull the recoil starter or depress the electric start button. Once the engine starts, gradually disengage the choke as the engine warms up. Allow the engine to idle for a few minutes before engaging the auger and impeller. A smooth start ensures proper lubrication and reduces strain on the engine components.

The stopping procedure is equally important for maintaining the longevity of your machine. To shut down the snowblower, disengage the auger and impeller and allow the engine to idle for a minute or two. This allows the engine to cool down gradually. Next, turn the ignition key to the "off" position to shut down the engine completely. In case of an emergency or potential hazard, immediately disengage all controls and shut off the engine. After shutting down, perform a quick visual inspection of the snowblower to check for any unusual noises, leaks, or damage. If any problems are detected, address them before storing the snowblower. Regular adherence to these starting and stopping procedures will help prevent unnecessary wear and tear on the engine and other critical components, ensuring years of reliable service from your John Deere 724D.

Operating Techniques for Optimal Snow Removal

Achieving optimal snow removal with your John Deere 724D involves employing efficient and strategic operating techniques. When tackling deep snow, it's best to avoid attempting to clear the entire accumulation in a single pass. Instead, make multiple passes, removing the top layers first and gradually working your way down. This reduces the load on the snowblower and prevents the engine from bogging down. Overlapping each pass slightly will ensure that no snow is left behind and that the cleared area is consistent. If you encounter particularly heavy or wet snow, consider reducing your ground speed to allow the snowblower to effectively process the material. A slower speed enables the auger and impeller to work more efficiently, preventing clogging and ensuring a clean clearing path.

When clearing snow from driveways or walkways, it's important to direct the discharge chute away from buildings, vehicles, and pedestrian areas. This prevents damage and injuries. Adjust the chute deflector to control the trajectory of the discharged snow, directing it away from your path and any obstacles. Be mindful of the wind direction, as a strong wind can blow snow back onto the cleared area or onto nearby objects. When clearing snow near the edge of a driveway or walkway, avoid getting too close to the edge, as the auger can pick up rocks or debris, potentially damaging the snowblower. Finally, always maintain a safe distance from other people and objects while operating the snowblower, and be aware of your surroundings at all times. These operating techniques will not only improve the efficiency of your snow removal efforts but also enhance your safety and protect your equipment.

Adjusting Snowblower Settings

To maximize the performance of your John Deere 724D snowblower, understanding and adjusting the various settings is crucial. The chute rotation allows you to direct the flow of snow, preventing it from being thrown onto areas you've already cleared or towards obstacles. Ensure the chute rotates freely and is properly locked in place before operation. Similarly, the chute deflector controls the height and distance of the snow stream. Adjusting the deflector allows you to customize the snow discharge based on the snow conditions and the area you're clearing. Some models may also feature adjustable skid shoes or scraper blades. These components allow you to fine-tune the snowblower's height above the ground, preventing damage to the pavement or scraping up gravel.

The throttle control regulates the engine speed, which directly affects the snowblower's power and performance. In heavy snow conditions, increasing the throttle can provide more power to the auger and impeller. However, it's important to avoid over-revving the engine, as this can lead to premature wear and tear. The scraper blade, located at the bottom of the snowblower, helps to remove packed snow and ice from the surface. Ensure the scraper blade is properly adjusted to provide optimal contact with the ground without causing damage. Periodically inspect and adjust these settings to ensure your snowblower is performing at its best. Refer to your owner's manual for specific instructions on adjusting each setting, as procedures may vary depending on the model. Taking the time to properly adjust these settings will not only improve the efficiency of your snow removal efforts but also extend the life of your machine.

Understanding the Controls and Instruments

Familiarizing yourself with the controls and instruments of your John Deere 724D snowblower is essential for safe and efficient operation. The throttle control regulates the engine speed, impacting the snowblower's power and performance. The choke (if equipped) helps to start the engine, especially in cold weather. The drive control engages and disengages the drive wheels, allowing you to propel the snowblower forward or backward. The auger control engages the auger and impeller, which are responsible for collecting and throwing the snow. Understanding the function of each control is critical for maintaining control of the snowblower and avoiding accidents.

The instruments on your John Deere 724D, such as the fuel gauge and hour meter, provide valuable information about the snowblower's status. The fuel gauge indicates the amount of fuel remaining in the tank, helping you avoid running out of fuel during operation. The hour meter tracks the total operating time of the snowblower, which is important for scheduling maintenance tasks, such as oil changes and spark plug replacements. In addition, many models are equipped with warning lights or indicators that alert you to potential problems, such as low oil pressure or overheating. Regularly monitor these instruments to ensure your snowblower is operating within safe parameters. By understanding the function of each control and instrument, you can operate your John Deere 724D snowblower with confidence and prevent potential problems. Refer to your owner's manual for detailed information on the location and function of each control and instrument specific to your model.

Maintenance

Daily Maintenance Tasks

Before each use of your John Deere 724D, a quick but thorough inspection can prevent small issues from escalating into major repairs. Start by visually inspecting the entire machine for any signs of damage, leaks, or loose components. Pay close attention to the condition of the tires, ensuring they are properly inflated and free from cuts or abrasions. Check all fluid levels, including engine oil, hydraulic fluid, and fuel, topping them off as necessary to maintain optimal performance. Verify the functionality of all controls, including the throttle, steering, and auger engagement, ensuring they operate smoothly and respond as expected. This daily routine will not only extend the lifespan of your machine but also contribute to a safer and more productive operating experience.

Another critical daily task involves cleaning any accumulated debris from the engine compartment and around moving parts. Grass clippings, leaves, and other materials can quickly build up, causing overheating, reduced efficiency, and potential fire hazards. Use a brush or compressed air to remove any obstructions, paying particular attention to the engine cooling fins and air intake vents. Inspect the auger and impeller housings for any signs of clogging, and clear them as needed to ensure optimal snow-clearing performance. A clean machine is a happy machine, and a happy machine is less likely to experience unexpected downtime.

Periodic Maintenance Schedule

Beyond the daily checks, a structured periodic maintenance schedule is essential for long-term reliability. Consult your John Deere 724D operator's manual for specific intervals, but generally, this includes tasks such as oil changes, filter replacements, and lubrication of key components. Adhering to this schedule ensures that critical systems receive the attention they need to function optimally. Regular maintenance prevents premature wear and tear, extending the life of your investment and minimizing the likelihood of costly repairs down the road. Consider keeping a log of all maintenance performed, noting dates, services rendered, and any parts replaced. This record can be invaluable for tracking your machine's health and identifying potential issues early on.

Typically, at the beginning of each season, perform a comprehensive inspection of the machine. This should include a close look at all belts, hoses, and electrical connections for signs of wear, cracking, or corrosion. Check the fuel system for leaks or contamination, and replace the fuel filter if necessary. Inspect the auger and impeller blades for damage or excessive wear, and sharpen or replace them as needed. At the end of the season, before storing your John Deere 724D, it's crucial to prepare it properly for storage by draining the fuel tank, changing the oil, lubricating all moving parts, and covering the machine to protect it from the elements. This will help prevent corrosion and ensure that your machine is ready to go when the snow starts to fall again.

Lubrication Procedures

Proper lubrication is paramount to the smooth operation and longevity of your John Deere 724D. Identify all grease fittings on the machine, typically located on moving parts such as axles, bearings, and pivot points. Use a grease gun filled with high-quality lithium-based grease to lubricate these fittings until fresh grease emerges, indicating that old, contaminated grease has been purged. Over-greasing can sometimes be as detrimental as under-greasing, as excessive grease can attract dirt and debris, so refer to your operator's manual for specific lubrication instructions.

Don't forget to lubricate the control cables and linkages to ensure smooth and responsive operation. A light application of oil or silicone spray can prevent cables from sticking or binding, improving overall control and reducing wear. Periodically check the gearbox oil level and top it off as needed, using the recommended type of oil specified in your operator's manual. This ensures proper lubrication of the gears and prevents premature wear and failure. Regular lubrication is a simple but crucial step in maintaining the performance and extending the life of your John Deere 724D.

Belt Inspection and Replacement

The belts on your John Deere 724D are critical for transferring power from the engine to the auger and impeller. Inspect the belts regularly for signs of wear, cracking, fraying, or glazing. A worn belt can slip, reducing the machine's performance and potentially causing damage to other components. To inspect the belts, visually check for any of these signs of wear. Also, depress the belt in the middle of its longest span, checking the amount of deflection in the belt. If the deflection is more than specified in the manual, the belt should be replaced. The belt should also be replaced if it feels slick or hard from glazing.

Replacing a belt requires careful attention to detail and the correct tools. First, disconnect the spark plug wire to prevent accidental starting. Next, loosen the belt tensioner and carefully remove the old belt. Route the new belt according to the diagram in your operator's manual, ensuring it is properly seated in the pulleys. Adjust the belt tension to the specified setting, using a belt tension gauge if available. After replacing a belt, run the machine briefly and recheck the tension, as new belts may stretch slightly. Always use genuine John Deere replacement belts to ensure proper fit and performance. Using aftermarket belts can void your warranty and potentially damage your machine.

Skid Shoe and Scraper Blade Adjustment/Replacement

The skid shoes and scraper blade on your John Deere 724D are responsible for protecting the auger housing and preventing damage to the ground surface. Adjusting the skid shoes allows you to customize the machine's performance based on the surface you're clearing, such as gravel or paved driveways. Lowering the skid shoes raises the scraper blade off the ground, ideal for gravel surfaces. Raising the skid shoes lowers the scraper blade closer to the ground, better for paved surfaces. Regularly check the skid shoes and scraper blade for wear and damage. If the skid shoes are worn thin or the scraper blade is bent or damaged, replace them immediately to prevent further damage to the auger housing.

Replacing the skid shoes and scraper blade is a straightforward process. First, loosen the hardware securing the skid shoes to the auger housing. Adjust the skid shoes to the desired height and retighten the hardware. To replace the scraper blade, remove the hardware securing it to the bottom of the auger housing. Install the new scraper blade and retighten the hardware. Ensure that the scraper blade is properly aligned and securely fastened. When replacing the scraper blade, consider using a reinforced scraper blade for increased durability, especially if you frequently clear snow from abrasive surfaces. Regular maintenance of the skid shoes and scraper blade will help maintain optimal snow-clearing performance and protect your machine from damage.

Engine Maintenance (Oil Change, Air Filter, Spark Plug)

Proper engine maintenance is crucial for the reliable operation of your John Deere 724D. Regularly changing the engine oil ensures proper lubrication and cooling, preventing premature wear and damage. Refer to your operator's manual for the recommended oil type and change interval. When changing the oil, run the engine briefly to warm it up, making the oil flow more easily. Remove the drain plug and allow the old oil to drain completely. Replace the oil filter and reinstall the drain plug. Fill the engine with the correct amount of new oil, using a funnel to prevent spills. Check the oil level with the dipstick and top it off as needed.

The air filter protects the engine from dirt and debris, ensuring clean combustion. Regularly inspect the air filter and clean or replace it as needed. A dirty air filter can restrict airflow, reducing engine performance and fuel efficiency. The spark plug ignites the air-fuel mixture in the engine, and a worn or fouled spark plug can cause starting problems and reduced power. Inspect the spark plug regularly and clean or replace it as needed. When replacing the spark plug, use the correct type specified in your operator's manual and tighten it to the specified torque. Performing these engine maintenance tasks regularly will help ensure that your John Deere 724D starts easily, runs smoothly, and delivers optimal performance for years to come.

Troubleshooting

Engine Starting Problems

One of the most frustrating issues with a John Deere 724D is difficulty starting the engine. This can stem from a variety of causes, ranging from simple issues to more complex mechanical failures. Always begin by checking the basics: ensure the fuel tank is adequately filled with fresh, clean fuel, and that the fuel shut-off valve is in the "ON" position. Next, verify the spark plug is properly connected and free from excessive carbon buildup. A faulty spark plug can prevent the engine from igniting the fuel mixture, leading to starting problems. Additionally, check the battery voltage to ensure it is sufficient for starting. A weak battery may turn the engine over slowly, preventing it from firing.

If the basics check out, the problem might lie in the carburetor or fuel system. Inspect the carburetor for any signs of dirt, debris, or gumming, which can restrict fuel flow. A clogged carburetor can starve the engine of fuel, preventing it from starting. Consider cleaning the carburetor using a carburetor cleaner spray, or, for more serious blockages, a complete carburetor overhaul might be necessary. Another common issue is a malfunctioning fuel pump, which may not be delivering fuel to the carburetor. You can test the fuel pump by disconnecting the fuel line and checking for fuel flow while cranking the engine. Finally, consider that the engine oil could be contaminated or too thick to turn over properly.

Snowblowing Performance Issues

Reduced snowblowing performance can be a significant headache during heavy snowfalls. A common cause of decreased performance is a worn or damaged scraper blade. The scraper blade ensures the snowblower effectively clears the pavement, so any damage or wear can result in snow being left behind. Regularly inspect the scraper blade and replace it if necessary to maintain optimal snow-clearing efficiency. Similarly, worn or damaged shear bolts can prevent the auger from operating at full capacity. Shear bolts are designed to break under excessive stress, protecting the auger and gearbox from damage.

Another contributing factor could be the accumulation of ice or snow within the snowblower housing or impeller. This can restrict the flow of snow and reduce the snowblower's overall throwing distance. Periodically inspect the housing and impeller for any ice or snow buildup and remove it using a scraper or by allowing the snowblower to warm up in a sheltered area. Furthermore, check the condition of the drive belt. A loose or worn drive belt will decrease the transfer of power from the engine to the auger and impeller. Adjust the belt tension or replace the belt as needed to restore optimal performance.

Auger or Impeller Malfunctions

If the auger or impeller isn't turning, there are a few potential causes to investigate. The most frequent culprit is a sheared shear bolt. Shear bolts are designed to break under stress, protecting the auger and gearbox from more serious damage. Always keep a supply of replacement shear bolts on hand. If the shear bolts are intact, inspect the auger gearbox for any signs of damage or malfunction. A damaged gearbox can prevent the auger from turning, and may require professional repair. Also check for any obstructions that might be blocking the auger or impeller from spinning.

In some cases, the impeller might be turning, but not throwing snow effectively. This could be caused by a damaged or worn impeller. Inspect the impeller blades for any bends, cracks, or other damage that could affect its performance. A damaged impeller will not effectively scoop and throw the snow. Similarly, check the clearance between the impeller blades and the housing. Excessive clearance can reduce the impeller's efficiency, causing it to throw snow poorly. Adjust the impeller blade clearance if necessary, referring to the manufacturer's specifications.

Drive System Problems

Problems with the drive system can prevent the snowblower from moving forward or backward. Start by inspecting the drive cable for any signs of damage, kinks, or binding. A damaged drive cable can prevent the transmission from engaging properly. If the cable appears to be in good condition, check the drive belt tension. Insufficient belt tension can cause the drive wheels to slip, especially under heavy loads. Adjust the belt tension according to the manufacturer's specifications. Ensure the drive belt isn't covered in snow and water.

If the drive belt is properly tensioned, the issue might lie within the transmission itself. Inspect the transmission for any signs of damage or leaks. A damaged transmission might require professional repair or replacement. Check the tires on the snowblower. Make sure they are correctly inflated, and not showing signs of age or damage.

Electrical System Diagnostics

Electrical problems can manifest in a variety of ways, including difficulty starting, a non-functioning headlight, or a malfunctioning electric starter. Begin by checking the battery voltage and connections. A weak battery or corroded connections can prevent the electrical system from functioning properly. Clean the battery terminals and ensure the connections are secure. Check the fuses for any signs of damage.

If the battery and connections are good, inspect the wiring harness for any signs of damage, such as frayed wires or loose connections. Repair or replace any damaged wiring as needed. If the headlight is not working, check the bulb and the headlight switch. A blown bulb or a faulty switch can prevent the headlight from illuminating. Use a multimeter to test for voltage at various points in the electrical system to isolate the source of the problem.

Repair and Overhaul

Auger and Impeller Repair

The auger and impeller are the heart of your snow removal system, responsible for scooping and throwing snow, respectively. Regular inspection and maintenance are crucial to ensure optimal performance. Begin by visually inspecting the auger blades for any signs of bending, cracking, or excessive wear. Pay close attention to the shear pins; these are designed to break under excessive stress, protecting the auger gearbox from damage. Replace any broken or worn shear pins with the correct type specified in your parts manual. Ignoring this can lead to catastrophic damage to the gearbox and significantly increase repair costs.

When inspecting the impeller, check for similar signs of wear and damage. Pay particular attention to the impeller blades' leading edges, as these are subject to the most abrasion. The clearance between the impeller blades and the housing is critical for efficient snow throwing. Excessive clearance will result in reduced throwing distance and increased snow build-up in the housing. If the clearance exceeds the specification in your service manual, shimming or replacement of the impeller may be necessary. Remember to always disconnect the spark plug wire before working on the auger or impeller to prevent accidental engine starting.

If you discover bent auger blades, they can often be straightened using a vise and a hammer. However, use caution not to weaken the metal by over-bending it. For severely damaged or cracked blades, replacement is the safest and most reliable option. When replacing the auger or impeller, always use genuine John Deere parts or high-quality aftermarket equivalents to ensure proper fit and performance. After completing any auger or impeller repair, lubricate the bearings and grease fittings according to the recommended maintenance schedule.

Drive System Repair

The drive system transmits power from the engine to the wheels or tracks, enabling your John Deere 724D to move through the snow. Maintaining the drive system is crucial for ensuring smooth operation and preventing costly breakdowns. Start by inspecting the drive belt for any signs of cracking, fraying, or wear. A worn or damaged drive belt will slip, reducing traction and making it difficult to maneuver the snow thrower. Refer to your service manual for the correct belt tension and adjustment procedure. Replace the belt if it shows any signs of significant wear or damage.

Examine the drive wheels or tracks for proper engagement and condition. Worn or damaged tires will reduce traction, especially on icy surfaces. Check the tire pressure regularly and inflate to the recommended pressure. If your snow thrower is equipped with tracks, inspect them for any signs of wear, damage, or misalignment. Adjust the track tension as needed to ensure proper tracking and prevent premature wear. Lubricate all moving parts in the drive system, such as bearings and axles, according to the recommended maintenance schedule.

If you experience slippage in the drive system, it may be due to a worn friction disc or a loose adjustment. The friction disc transfers power from the engine to the drive axle. Over time, the friction disc can wear down, reducing its ability to transmit torque. Refer to your service manual for the proper procedure to inspect and replace the friction disc. Adjust the drive system linkage to ensure proper engagement of the friction disc. A properly adjusted drive system will provide optimal traction and maneuverability.

Engine Repair (Basic)

While a full engine overhaul requires specialized tools and expertise, several basic engine repairs can be performed with common tools and a little know-how. Start by regularly checking the engine oil level and adding oil as needed. Using the correct type and grade of oil is crucial for engine longevity. Refer to your owner's manual for the recommended oil specification. Change the oil and oil filter according to the recommended maintenance schedule. Dirty oil can lead to premature engine wear and reduced performance.

Inspect the air filter regularly and clean or replace it as needed. A dirty air filter restricts airflow to the engine, reducing power and fuel efficiency. Depending on the type of air filter, it may be possible to clean it with compressed air. However, if the air filter is heavily soiled or damaged, replacement is recommended. Ensure the air filter is properly seated in its housing to prevent unfiltered air from entering the engine. Also, check the spark plug for proper gap and condition.

A faulty spark plug can cause hard starting, misfires, and reduced power. Clean the spark plug electrodes with a wire brush and adjust the gap to the specification in your service manual. Replace the spark plug if it is fouled, cracked, or has worn electrodes. Ensure the spark plug is properly tightened to the correct torque specification. If your engine is difficult to start, check the fuel system for any obstructions or leaks. Clean the carburetor or replace the fuel filter as needed. If starting problems persist, consult a qualified mechanic.

Electrical System Repair

The electrical system is vital for starting the engine and powering various components, such as the lights. Begin by inspecting the battery terminals for corrosion and clean them with a wire brush and a baking soda solution. Ensure the battery connections are tight and secure. A loose or corroded battery connection can cause starting problems and electrical malfunctions. Check the battery voltage with a voltmeter to ensure it is properly charged.

Inspect the wiring harness for any signs of damage, such as frayed wires or loose connections. Repair any damaged wires with electrical tape or heat shrink tubing. Replace any corroded or damaged connectors. Check the fuses and circuit breakers to ensure they are in good working order. Replace any blown fuses with the correct amperage rating. Refer to your wiring diagram to locate and troubleshoot any electrical problems.

If your snow thrower is equipped with electric start, test the starter motor to ensure it is functioning properly. If the starter motor is sluggish or fails to engage, it may need to be repaired or replaced. Check the charging system to ensure the battery is being properly charged while the engine is running. A faulty charging system can lead to a dead battery and starting problems. Consult a qualified mechanic for electrical system repairs that are beyond your expertise.

Parts List and Diagrams

Refer to the parts list and diagrams in your service manual for detailed information on the various components of your John Deere 724D. The parts list provides part numbers and descriptions for all replaceable parts. The diagrams illustrate the assembly and disassembly of the various components, making it easier to identify and replace parts. Always use the correct part numbers when ordering replacement parts to ensure proper fit and performance.

The diagrams can also be used to troubleshoot problems and identify potential sources of malfunctions. By studying the diagrams, you can gain a better understanding of how the various components interact and how to diagnose problems. Keep your parts list and diagrams readily available for reference whenever you are performing maintenance or repairs on your John Deere 724D. It is a good investment to have both printed and digital copies for convenience.

When ordering parts, be sure to provide the model and serial number of your John Deere 724D to ensure you receive the correct parts. Some parts may be specific to certain production runs or models. Consult with your local John Deere dealer or parts supplier for assistance in identifying and ordering the correct parts. Remember to always use genuine John Deere parts or high-quality aftermarket equivalents to ensure proper fit, performance, and reliability.

Storage

Preparing the Snowblower for Storage

Proper preparation of your John Deere 724D snowblower for storage is critical for ensuring its longevity and optimal performance when winter returns. Failing to properly prepare the snowblower can lead to corrosion, fuel degradation, and potential damage to various components. This proactive approach saves you time and money in the long run by minimizing repairs and maximizing the lifespan of your equipment. Take the time to follow these steps carefully; your machine will thank you for it.

Begin by thoroughly cleaning the entire snowblower. Remove any accumulated snow, ice, salt, or debris from the auger housing, impeller, and engine compartment. A pressure washer can be useful for this task, but exercise caution around electrical components and sensitive areas. Use a brush and mild detergent to remove stubborn dirt and grime. Once cleaned, allow the snowblower to dry completely to prevent rust formation. Make sure to pay attention to the nooks and crannies, as these are often the places where corrosion takes hold.

Next, address the fuel system. Stabilizing the fuel is crucial to prevent it from breaking down and clogging the carburetor. Add a fuel stabilizer to the gas tank according to the manufacturer's instructions, then run the engine for several minutes to ensure the stabilized fuel circulates throughout the fuel system. Alternatively, and preferably, you can drain the fuel tank completely. If you choose to drain the tank, start the snowblower and let it run until it stalls from lack of fuel, thereby emptying the carburetor as well. This step is vital to prevent gum and varnish buildup that can cause starting problems later. Store the drained fuel in a sealed container approved for gasoline storage.

Inspect the engine oil and change it if necessary. Old oil can contain contaminants that can corrode engine parts during storage. Refer to your engine's service manual for the proper oil type and change procedure. After changing the oil, run the engine briefly to circulate the new oil throughout the engine. While you're at it, check the spark plug. Clean and gap it according to the engine manufacturer's specifications. A new spark plug can ensure easy starting when you bring the snowblower out of storage. Consider spraying a small amount of fogging oil into the spark plug hole before installing the plug. This oil will coat the cylinder walls and prevent corrosion.

Finally, disconnect the spark plug wire from the spark plug and ground it to the engine block. This prevents accidental starting of the engine during storage. Apply a coat of rust preventative spray to any exposed metal surfaces, especially the auger, impeller, and scraper blade. Lubricate all moving parts, such as the auger bearings, control cables, and chute rotator, with a suitable lubricant. These preventative measures help prevent corrosion and ensure smooth operation when you bring the snowblower out of storage.

Storage Location Recommendations

Selecting an appropriate storage location is just as important as preparing the snowblower itself. An ideal storage location should be dry, protected from the elements, and away from direct sunlight. Prolonged exposure to sunlight can damage plastic components and fade the paint. Humidity can lead to rust and corrosion, while extreme temperatures can cause damage to rubber and plastic parts. Consider these factors when choosing the best spot for your snowblower to hibernate through the off-season.

A garage or shed is an excellent choice for snowblower storage. These structures offer protection from the elements and provide a relatively stable environment. Ensure the garage or shed is well-ventilated to prevent the build-up of moisture. If storing the snowblower in a garage, consider placing it on a piece of cardboard or plywood to protect the floor from any potential oil drips or spills. Avoid storing the snowblower near flammable materials, such as gasoline or propane tanks.

If a garage or shed is not available, consider using a designated outdoor storage area. A waterproof cover specifically designed for snowblowers can provide protection from the elements. Ensure the cover is securely fastened to prevent it from blowing away in windy conditions. Place the snowblower on a pallet or wooden blocks to keep it off the ground and prevent moisture from wicking up into the machine. Avoid storing the snowblower directly under trees, as falling branches or sap can damage the machine. Regularly check the cover for tears or damage and repair or replace it as needed.

Regardless of the storage location, ensure the area is free of pests and rodents. Mice and other rodents can cause significant damage to wiring, hoses, and other components. Place rodent traps or deterrents around the storage area to prevent infestations. Inspect the snowblower periodically during storage to ensure pests have not taken up residence. Addressing pest problems early can prevent costly repairs later on.

Post-Storage Inspection and Preparation

Before putting your John Deere 724D back into service at the start of the next snow season, a thorough inspection and preparation process is essential. Don't assume that everything is ready to go just because you stored it properly. Conditions may have changed, and it's always better to be safe than sorry. This ensures its reliable and efficient operation when you need it most. Neglecting this step can lead to unexpected breakdowns and frustration during snow removal operations.

Begin by removing the cover and visually inspecting the entire snowblower. Look for any signs of damage, such as rust, corrosion, cracks, or loose parts. Pay particular attention to the auger housing, impeller, and scraper blade. Check the condition of the belts and hoses for signs of wear or deterioration. Replace any damaged or worn parts before starting the engine. Ignoring these issues can lead to more serious problems down the road.

Next, check the engine oil level and add oil if necessary. Inspect the air filter and clean or replace it as needed. Ensure the spark plug is clean and properly gapped. If you drained the fuel tank before storage, fill it with fresh gasoline. If you used a fuel stabilizer, check the fuel for any signs of degradation. If the fuel appears cloudy or contains debris, drain the tank and refill it with fresh gasoline. A clean fuel system is essential for reliable starting and smooth engine operation.

Reconnect the spark plug wire to the spark plug. Check the tire pressure and inflate the tires to the recommended pressure. Lubricate all moving parts, such as the auger bearings, control cables, and chute rotator, with a suitable lubricant. Start the engine and allow it to warm up for several minutes. Check the operation of all controls, including the auger, impeller, and chute rotator. Ensure everything is functioning smoothly and efficiently. Make any necessary adjustments or repairs before putting the snowblower into service.

Finally, perform a test run in a safe area. Check the snowblower's performance in various snow conditions to ensure it is operating optimally. Make any necessary adjustments to the scraper blade or skid shoes to achieve the desired snow removal performance. By following these post-storage inspection and preparation steps, you can ensure your John Deere 724D is ready to tackle the next snow season with confidence.