The John Deere X738 is more than just a lawn tractor; it's a versatile, high-performance machine designed for demanding property maintenance. Boasting all-wheel drive (AWD), the X738 provides exceptional traction and stability on uneven terrain, ensuring efficient operation even in challenging conditions. The hydraulic power steering contributes to effortless maneuverability, reducing operator fatigue during extended use. Furthermore, the durable frame and high-capacity mower deck are built to withstand years of rigorous use, making it a long-term investment for property owners who value reliability and performance. From mowing large lawns to handling snow removal, the X738 is a true workhorse capable of tackling a wide range of tasks.
Beyond its robust construction, the X738 is equipped with a powerful and fuel-efficient engine. The precise engine specifications, including horsepower and displacement, can be found in the appendices of this manual and are crucial for proper maintenance and troubleshooting. This engine is designed for long life and optimal performance, but it requires regular maintenance, including oil changes and filter replacements, as detailed in subsequent chapters. Understanding the engine's capabilities and limitations will help you operate the tractor safely and efficiently, maximizing its lifespan and minimizing potential downtime. The intelligent design ensures a balance between power and fuel consumption, making it an environmentally conscious choice.
A key feature that separates the X738 from standard lawn tractors is its hydraulic system, which powers the power steering, mower deck lift, and other attachments. This system provides smooth and precise control, allowing you to operate the tractor with ease and efficiency. Regularly inspecting the hydraulic fluid levels and lines is essential for maintaining optimal performance and preventing costly repairs. The hydraulic system is a critical component, and any leaks or malfunctions should be addressed immediately to avoid further damage. Proper maintenance of the hydraulic system will ensure reliable and consistent operation for years to come.
Operating the John Deere X738 safely requires a thorough understanding of its controls and adherence to all safety guidelines. Before operating the tractor, carefully read and understand the operator's manual. Familiarize yourself with the location and function of all controls, including the throttle, brakes, and steering wheel. Never operate the tractor under the influence of alcohol or drugs, as impaired judgment can lead to serious accidents. Safety should always be your top priority when operating any machinery, and the X738 is no exception.
Always wear appropriate personal protective equipment (PPE) when operating the X738, including safety glasses, hearing protection, and sturdy footwear. Safety glasses will protect your eyes from flying debris, while hearing protection will reduce the risk of hearing damage from prolonged exposure to engine noise. Sturdy footwear will provide good traction and protect your feet from injury. In addition, avoid wearing loose clothing or jewelry that could get caught in moving parts. Proper PPE is essential for preventing injuries and ensuring a safe operating environment.
Before starting the engine, ensure that the area around the tractor is clear of people, pets, and obstacles. Always look behind you before reversing the tractor, as blind spots can make it difficult to see small objects or people. Never allow passengers to ride on the tractor, as it is designed for single-person operation only. Exercise caution when operating the tractor on slopes or uneven terrain, and avoid sudden turns or maneuvers that could cause the tractor to tip over. By following these simple precautions, you can significantly reduce the risk of accidents and injuries.
Finally, perform regular maintenance checks on the tractor to ensure that it is in safe operating condition. Check the tire pressure, fluid levels, and condition of all belts and hoses. Repair any damage or replace worn parts immediately. A well-maintained tractor is a safe tractor, and regular maintenance will help prevent accidents and prolong the life of your machine. Adhering to the maintenance schedule outlined in this manual is critical for ensuring safe and reliable operation.
Before attempting to start the John Deere X738 engine, it is crucial to ensure the area is clear of bystanders, especially children and pets. Confirm the parking brake is engaged firmly to prevent unintended movement. Review the operator's manual for specific safety precautions related to starting and operating the machine. Familiarize yourself with the location and operation of all safety switches and interlocks before proceeding.
To start the engine, insert the key into the ignition switch and turn it clockwise to the "Start" position. Hold the key in this position until the engine starts, but for no longer than 15 seconds to avoid damaging the starter motor. Once the engine is running, release the key and allow it to return to the "Run" position. Observe the gauges and warning lights to ensure everything is functioning correctly before proceeding.
To stop the engine, simply turn the key to the "Off" position. Allow the engine to idle for a short period before shutting it off, especially after heavy use, to allow for proper cooling and prevent potential damage to the engine components. Always engage the parking brake before exiting the tractor, and remove the key to prevent unauthorized operation. Store the key in a safe place where it will not be lost or stolen.
The John Deere X738 features a range of controls and instruments designed to provide the operator with comprehensive information and precise control over the machine's operation. Spend time familiarizing yourself with the location and function of each control before operating the tractor. Understanding the purpose of each instrument is vital for maintaining safe and efficient operation. Proper use of the controls and diligent monitoring of the instruments will contribute to the overall longevity and reliability of your X738.
The steering wheel controls the direction of the tractor, providing smooth and responsive handling. The throttle lever regulates the engine speed, allowing for precise control over the machine's power and performance. The hydrostatic transmission is controlled by foot pedals, allowing for seamless forward and reverse movement. Experiment with the controls in an open area to develop a feel for their responsiveness and fine-tune your operating technique.
The instrument panel provides real-time information about the engine's performance, including engine speed, coolant temperature, and fuel level. Monitor these gauges regularly to ensure the engine is operating within its optimal range. Warning lights will illuminate to alert the operator of any potential problems, such as low oil pressure or overheating. Respond promptly to any warnings by shutting down the engine and investigating the cause. Regular instrument monitoring can help prevent serious engine damage and costly repairs.
The John Deere X738 is designed for a wide variety of tasks, including mowing and using various attachments. Before attaching any implements, consult the operator's manual for specific instructions and safety precautions. Ensure that the attachment is compatible with the X738 and properly secured before operation. Regularly inspect the attachments for wear and tear, and replace any damaged parts promptly.
When mowing, adjust the cutting height to the desired level using the height adjustment lever. Be aware of obstacles such as rocks, roots, and sprinkler heads, and avoid striking them with the mower deck. Overlapping each pass slightly ensures a clean and even cut. Remember to mow at a speed that allows for a quality cut without straining the engine or damaging the mower deck.
When using other attachments, such as tillers, snow blowers, or front loaders, follow the manufacturer's instructions carefully. Ensure the attachment is properly mounted and secured before operating. Adjust the engine speed and operating parameters to suit the specific attachment and the task at hand. After each use, clean the attachment thoroughly and store it in a dry place to prevent corrosion and damage. Adhering to these guidelines will prolong the life of your attachments and ensure safe and efficient operation.
Maintaining your John Deere X738 is crucial for ensuring its longevity and optimal performance. Establishing and adhering to a regular maintenance schedule will prevent costly repairs down the line and keep your machine running smoothly. Consult the maintenance schedule in this manual frequently, as it outlines specific tasks that should be performed at specific intervals, such as every 50 hours, 100 hours, or annually. Ignoring these recommendations can lead to premature wear and tear on vital components, resulting in decreased efficiency and potential breakdowns. Proper preventative maintenance is the key to a long-lasting and reliable tractor. Remember to document all maintenance tasks completed, including the date, hours of operation, and any parts replaced, to maintain a thorough service record.
Your maintenance schedule should be adapted to your specific usage conditions. If you consistently operate your X738 in dusty or harsh environments, you may need to increase the frequency of certain maintenance tasks, such as air filter cleaning and oil changes. Similarly, if you only use your tractor for light-duty tasks, you may be able to extend the intervals between some services. Carefully observe your tractor's performance and appearance, paying attention to any unusual noises, vibrations, or fluid leaks. These signs could indicate the need for immediate maintenance or repairs, regardless of the scheduled interval. Always prioritize safety and consult a qualified John Deere technician if you are unsure about any maintenance procedure.
The lifeblood of your John Deere X738 is its various fluids, including engine oil, transmission fluid, and coolant. Regularly checking the fluid levels and condition is essential for preventing damage to critical components. Engine oil should be checked before each use, and the level should be maintained between the minimum and maximum marks on the dipstick. Low oil levels can lead to engine overheating and accelerated wear, while overfilling can cause foaming and reduced lubrication. Transmission fluid should also be checked regularly, and the fluid should be clear and free of contaminants. Discolored or milky transmission fluid indicates the presence of moisture, which can damage the transmission. Coolant levels should be checked when the engine is cool, and the coolant should be mixed according to the manufacturer's specifications.
Changing fluids according to the recommended intervals is equally important. Engine oil and filter changes are typically required every 50-100 hours of operation, depending on the type of oil used and the operating conditions. Transmission fluid changes are typically required every 200-400 hours, while coolant should be changed every two years. Always use the correct type of fluid for your specific model of John Deere X738, as using the wrong fluid can damage the components. When changing fluids, dispose of the old fluid properly according to local regulations. Improper disposal can contaminate the environment and pose a health hazard. Remember to consult your John Deere dealer for recommended fluids and disposal methods.
Filters are essential for protecting the engine and other components from dirt, debris, and contaminants. Regularly replacing filters, including the air filter, oil filter, and fuel filter, is crucial for maintaining optimal performance. A clogged air filter can restrict airflow to the engine, leading to reduced power and increased fuel consumption. A clogged oil filter can reduce the flow of oil to the engine, leading to accelerated wear. A clogged fuel filter can restrict the flow of fuel to the engine, leading to poor performance and starting problems. Inspecting these filters regularly is vital for understanding when a change is necessary. Always use genuine John Deere filters or high-quality aftermarket filters that meet the manufacturer's specifications.
Spark plugs are responsible for igniting the air-fuel mixture in the engine, and they need to be replaced periodically to ensure proper combustion. Worn or fouled spark plugs can lead to misfires, reduced power, and increased fuel consumption. The recommended spark plug replacement interval is typically every 100-200 hours of operation. When replacing spark plugs, gap the new plugs according to the manufacturer's specifications. Over-tightening the spark plugs can damage the threads in the cylinder head, while under-tightening can lead to leaks and misfires. When removing the spark plugs inspect them thoroughly, the spark plug will offer you a lot of information on how your engine is running. Consult a qualified John Deere technician if you are unsure about the correct spark plug gap or tightening torque.
Proper lubrication is essential for reducing friction and wear on moving parts. The John Deere X738 has several lubrication points that need to be greased regularly, including the steering components, front axle, and mower deck spindles. Use a high-quality grease that is specifically designed for use in agricultural equipment. Apply grease until fresh grease appears at the bearing seals. Do not over-grease, as this can damage the seals. Refer to the lubrication chart in this manual for the location of all lubrication points and the recommended greasing intervals. Ignoring these can lead to expensive repairs, lack of lubrication can lead to components that should last thousands of hours only lasting a few hundred.
In addition to greasing the lubrication points, it is also important to lubricate other moving parts, such as the throttle linkage and brake pedals. Apply a light coating of oil or grease to these parts to prevent them from binding or seizing. Regularly inspect all cables and linkages for signs of wear or damage, and replace them as needed. Pay close attention to the condition of the belts, as they can wear out quickly if they are not properly tensioned. Over time it is important to stay vigilant of the wear and tear on your machines, this vigilance will save you thousands. Consult a qualified John Deere technician if you are unsure about any lubrication procedure.
The heart of your John Deere X738, the engine, can sometimes present challenges. A common issue is difficulty starting, which can stem from a variety of sources. Begin by verifying that the fuel tank is adequately filled with fresh fuel and ensure that the fuel shut-off valve is in the open position. Next, inspect the spark plug(s) for proper function and condition; a fouled or worn spark plug will prevent the engine from igniting the fuel-air mixture. It's also crucial to check the air filter, as a clogged filter restricts airflow and negatively impacts engine performance. If these basic checks don't resolve the issue, consider inspecting the fuel filter and fuel lines for any blockages or restrictions that might be hindering fuel delivery to the engine.
Another common engine-related problem is overheating. Overheating can lead to serious engine damage if not addressed promptly. Ensure that the cooling system is functioning correctly. Check the coolant level in the radiator and overflow tank, adding coolant as needed. Inspect the radiator fins for debris and clean them thoroughly to ensure proper airflow. A faulty thermostat can also cause overheating, as it regulates the flow of coolant through the engine. Finally, confirm that the water pump is functioning correctly, circulating coolant through the engine block and radiator. Regular maintenance of the cooling system is vital for preventing overheating and extending the life of your engine.
Electrical problems can manifest in several ways, from a non-starting engine to malfunctioning lights or gauges. The first step is always to check the battery. Ensure that the battery terminals are clean and free of corrosion, and verify that the battery voltage is within the specified range using a multimeter. A low battery voltage can indicate a discharged battery or a problem with the charging system. Next, inspect the fuses and circuit breakers for any blown fuses or tripped breakers. Replace any blown fuses with the correct amperage rating. A blown fuse often indicates a short circuit in the electrical system, which should be investigated further.
Problems with the charging system can also lead to electrical issues. The charging system is responsible for replenishing the battery's charge while the engine is running. To test the charging system, start the engine and use a multimeter to measure the voltage at the battery terminals. The voltage should be higher than the battery's resting voltage, indicating that the charging system is working. If the voltage is not within the specified range, the alternator or regulator may be faulty. Consider consulting a qualified technician for diagnosis and repair of the charging system components. Faulty wiring is another common culprit in electrical issues; look for damaged or frayed wires, especially near moving parts or areas exposed to the elements.
The hydraulic system powers many of the X738's functions, including the mower deck lift, power steering, and attachments. Low hydraulic fluid levels are a frequent cause of hydraulic problems. Check the hydraulic fluid reservoir and add fluid as needed, using the recommended type of hydraulic fluid specified in your owner's manual. Leaks in the hydraulic system can also cause low fluid levels and reduced performance. Inspect all hydraulic lines, fittings, and cylinders for leaks. Tighten any loose fittings and replace any damaged hoses or seals. Even a small leak can significantly reduce hydraulic pressure and affect the operation of your equipment.
Air in the hydraulic system can also lead to erratic or sluggish performance. Air can enter the system through leaks or when hydraulic components are replaced. To purge air from the system, follow the bleeding procedure outlined in your owner's manual. This typically involves operating the hydraulic functions while opening bleed valves to release trapped air. Hydraulic pump failure is another potential cause of hydraulic problems. If the pump is not producing adequate pressure, it may need to be rebuilt or replaced. Symptoms of pump failure can include slow or weak hydraulic functions and excessive noise from the pump.
The transmission is essential for transferring power from the engine to the wheels. Issues here often manifest as difficulty shifting gears, a lack of power, or unusual noises. If you're experiencing difficulty shifting, start by checking the transmission fluid level. Low fluid can cause the gears to grind or slip. Add the appropriate type of transmission fluid as needed. Adjust the shift linkage if the gear selection is not precise. Worn or damaged shift linkage components can cause shifting problems. Sometimes, the issue could be as simple as adjusting the clutch cable or linkage.
Lack of power can also be related to the transmission. If the transmission is slipping, it will not be able to transfer power effectively to the wheels. This can be caused by worn clutch plates, low transmission fluid, or internal damage to the transmission. Unusual noises from the transmission, such as grinding, whining, or clunking, can indicate internal damage. In such cases, it's best to seek professional assistance to diagnose and repair the transmission. Neglecting these issues can lead to more serious and costly repairs down the line. Regular transmission maintenance, including fluid changes and inspections, is key to ensuring smooth and reliable operation.
Maintaining your John Deere X738 in peak condition requires using the correct replacement parts. The first step in ensuring you get the right part is to accurately identify it. Refer to your parts catalog, which can be found online on the John Deere website or in physical form, for detailed diagrams and part numbers specific to your X738 model. Pay close attention to serial number breaks, as some parts may differ depending on the production date of your tractor. When possible, cross-reference the part number with the original part that needs replacing, confirming visual similarities and dimensions to be absolutely certain. Knowing the part number ahead of time will drastically speed up the ordering process.
Beyond the parts catalog, visually inspecting the failed or worn component can provide valuable clues. Look for any manufacturer markings, logos, or stamped numbers on the part itself. Note the material composition, dimensions (length, width, diameter, etc.), and any specific features such as threads, flanges, or holes. Compare your observations to the exploded diagrams in the parts catalog. If you are unsure, consulting with a certified John Deere technician at your local dealership can offer expert assistance in identifying the correct replacement. Their expertise can help avoid ordering the wrong part and potential delays in your repair.
Once you've identified the correct part number, you have several convenient options for ordering. The most direct route is through your local John Deere dealership. Dealerships have experienced parts personnel who can verify the part number, check availability, and answer any questions you may have. They can also offer advice on related components or potential upgrades. Ordering through a dealership often provides the fastest access to parts, especially for commonly needed items. Many dealerships also offer online ordering or phone ordering with curbside pickup for added convenience.
Alternatively, you can order parts online through the official John Deere parts website. This option offers 24/7 access to a vast inventory of parts, allowing you to browse and order at your own pace. The online catalog allows you to search by part number, model number, or keyword. Be sure to double-check the part description and specifications before adding it to your cart. The John Deere parts website also offers helpful resources, such as parts diagrams, compatibility charts, and frequently asked questions. Always ensure you are using the official John Deere website to avoid counterfeit parts.
When placing your order, be prepared to provide your tractor's model number and serial number to ensure accurate parts selection. Also, inquire about the warranty policy on the replacement part. Keep records of your orders, including the part numbers, quantities, and dates, for future reference. Understanding the shipping options and estimated delivery times is also important to plan your repair schedule effectively.
Enhance the performance and versatility of your John Deere X738 with a wide range of available accessories. Consider adding a material collection system (MCS) to efficiently gather grass clippings and leaves during lawn care. These systems significantly reduce cleanup time and improve the overall appearance of your yard. Choose a system that is properly sized for your mowing deck and features a durable construction to withstand regular use. Regular cleaning and maintenance of the MCS components, such as the blower and collection bags, will ensure optimal performance and longevity.
For year-round usability, a snow blower or front blade attachment transforms your X738 into a powerful snow removal machine. Opt for a snow blower with a sufficient clearing width for your driveway and sidewalks. A front blade attachment is useful for pushing snow and clearing light debris. Before installing any attachment, carefully review the operator's manual for proper installation and operating procedures. Always use appropriate safety precautions when operating the tractor with snow removal equipment.
Other valuable accessories include a towing hitch for pulling utility trailers or carts, a sun canopy or cab for operator comfort, and various lighting options for improved visibility during nighttime operation. A weight kit can improve traction and stability, particularly when using heavy attachments or operating on uneven terrain. Regularly inspect and maintain all accessories to ensure they are in good working order and safe to use. Investing in quality accessories will extend the functionality of your X738 and make your outdoor tasks more enjoyable and efficient.
Proper preparation is crucial for ensuring your John Deere X738 starts reliably and performs optimally after a period of inactivity. Failing to prepare your tractor for storage can lead to fuel degradation, corrosion of vital engine components, and battery discharge, all of which can result in costly repairs and reduced performance. Start by thoroughly cleaning the tractor, removing any grass clippings, mud, or debris that could trap moisture and promote rust. Inspect the machine for any signs of damage or wear, and address any issues before storage to prevent them from worsening during the off-season. Finally, ensure the fuel tank is properly treated with a fuel stabilizer to prevent the gasoline from breaking down and causing problems in the fuel system.
Fuel stabilizer is a key component in long-term storage preparation. Untreated gasoline can degrade over time, forming gums and varnishes that can clog fuel lines, carburetors (if applicable), and fuel injectors. Add the appropriate amount of fuel stabilizer to the fuel tank according to the manufacturer's instructions, ensuring the engine is run for a few minutes after adding the stabilizer to allow it to circulate throughout the fuel system. Completely filling the fuel tank can also minimize condensation and prevent rust from forming inside the tank. Remember to consult your owner's manual for specific recommendations on fuel stabilizer brands and application rates recommended by John Deere for your X738 model.
The battery is a vital component of your X738, responsible for starting the engine and powering electrical systems. Neglecting battery maintenance during storage can lead to sulfation, a buildup of lead sulfate crystals on the battery plates that reduces its capacity and lifespan. Before storing your tractor, fully charge the battery using a battery charger specifically designed for lead-acid batteries. This will help to maximize the battery's charge-holding ability during the storage period and prevent damage from deep discharge. Consider investing in a battery maintainer, which will automatically regulate the charging process and prevent overcharging.
After fully charging the battery, disconnect the negative cable from the battery terminal. This will prevent parasitic drain, which occurs when small amounts of electricity are drawn from the battery even when the tractor is not in use. Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures. Avoid storing the battery directly on a concrete floor, as this can accelerate self-discharge. Check the battery voltage periodically during storage, and recharge it if it drops below 12.4 volts to prevent sulfation. Remember to properly reconnect the battery cable before starting the tractor after storage, and ensure the connection is clean and secure.
Protecting your X738 from the elements is essential to prevent rust, corrosion, and damage to the tractor's components. Ideally, store your tractor in a garage, shed, or covered storage area. If outdoor storage is unavoidable, invest in a high-quality tractor cover that is specifically designed to protect against rain, snow, UV rays, and dust. Ensure the cover is breathable to prevent moisture buildup underneath, which can lead to corrosion. Consider adding a desiccant pack inside the cover to absorb any excess moisture.
In addition to a cover, consider taking steps to protect the tractor's tires from damage during storage. If possible, elevate the tractor slightly to take the weight off the tires and prevent flat spots from forming. Alternatively, inflate the tires to the maximum recommended pressure to reduce the risk of flat spots. Protect the tires from direct sunlight, as UV rays can cause them to crack and deteriorate over time. Regularly inspect the tractor for any signs of damage, such as rust or leaks, and address them promptly to prevent them from worsening. Remember to consult your owner's manual for specific recommendations on storing your X738 in your particular climate and conditions.