Kubota Z725 Parts and Parts Manual PDF

Kubota Z725 Parts

The Kubota Z725 is a commercial-grade zero-turn mower designed for efficiency and durability.

Powered by a 25-horsepower Kohler Command Pro engine, it features a 60-inch cutting deck with three blades for a wide cutting swath.

The hydrostatic transmission provides precise control, allowing operators to navigate tight spaces with ease.

The mower is equipped with adjustable cutting heights, ranging from 1 to 4.5 inches, ensuring versatility for various lawn conditions. With a comfortable high-back seat and ergonomic controls, the Kubota Z725 offers a user-friendly experience for professional landscapers and homeowners alike.

Kubota Z725 Parts List

Here is a list of common parts that you might need for maintenance or replacement:

  1. Engine Parts:
    • Spark plugs
    • Air filter
    • Oil filter
    • Fuel filter
    • Engine oil
  2. Cutting Deck Parts:
    • Blades
    • Deck belts
    • Deck spindles
    • Deck idler pulleys
  3. Transmission and Drive System:
    • Hydrostatic transmission components
    • Drive belts
    • Transmission filters
  4. Wheels and Tires:
    • Tires
    • Wheel bearings
    • Axles
  5. Electrical Components:
    • Battery
    • Starter
    • Ignition switch
    • Spark plug wires
  6. Filters and Fluids:
    • Hydraulic fluid
    • Transmission fluid
    • Fuel
  7. Miscellaneous Parts:
    • Seat (if damaged or worn)
    • Steering components
    • Brake components

Kubota Z725 Parts Diagram

You can find the parts diagram for the Kubota Z725KH-3 from Messicks.com and Jack’s Small Engines.

These diagrams provide a detailed breakdown of all the major components, allowing you to select specific categories and view the associated parts. To use the Kubota Z725 parts diagram to identify specific parts, you can follow these general steps:

  1. Select the Diagram: Choose a reliable source that provides the parts diagram for the Kubota Z725, such as Messicks.com or Jack’s Small Engines.
  2. Navigate the Diagram: Once you have the diagram, navigate through the categories or sections to locate the specific area of the equipment for which you need parts.
  3. Identify Parts: Within the diagram, parts are typically numbered or labeled. Locate the part of interest and find its associated reference number or name.
  4. Cross-Reference: Use the part number or name obtained from the diagram to cross-reference and find the specific part from a supplier or dealer.

In addition:

The parts diagram for the Kubota Z725 can be found on several websites:

  1. Jack’s Small Engines: This website provides an exploded view parts lookup for the Kubota Z725KH model. It offers complete exploded views of all the major manufacturers
  2. Messicks: This site offers parts diagrams for the Kubota RCK60P-725Z, which is the 60″ mower deck for the Z725. The diagrams are categorized into frequently used items and mower parts. You can select specific diagrams such as pulley holder/blade (center), tension pulley, mower deck, gauge wheel, discharge cover, and more
  3. Kubota Canada: The Kubota Parts Finder site allows you to search and view parts in detail, alongside specifications and order numbers. All genuine Kubota parts are designed and manufactured to strict factory standard
  4. .Kubota USA: This site provides a quick reference guide to access all your OEM Kubota Genuine Parts.

Kubota Z725  Belt Replacement

Ensure the mower is turned off, the key is removed, and the spark plug is disconnected before performing any maintenance.

  1. Identify the Belts:
    • Determine which belts need replacement. Common belts on zero-turn mowers include drive belts for the transmission and deck belts for the cutting blades.
  2. Access the Mower Deck:
    • Lift the mower deck to its highest position for better access to the belts. Some mowers have a lift lever or switch to raise and lower the deck.
  3. Remove the Deck:
    • Depending on your mower model, you may need to remove the deck to access the belts more easily. Follow the instructions in the manual for your specific mower.
  4. Release Tension:
    • Disengage the belt tension. There may be a tensioning system or idler pulley that you can move or loosen to release tension on the belt.
  5. Remove the Old Belt:
    • Slide the old belt off the pulleys. Take note of the belt routing to ensure correct installation of the new belt.
  6. Install the New Belt:
    • Place the new belt onto the pulleys, following the correct routing as indicated in the manual or using a diagram on the mower.
  7. Tension the Belt:
    • Engage the belt tensioning system or adjust the idler pulley to create the proper tension on the belt. Refer to the manual for the recommended tension specifications.
  8. Reassemble the Deck:
    • If you removed the mower deck, reattach it according to the instructions in the manual.
  9. Check Belt Alignment:
    • Ensure that the new belt is properly aligned on all pulleys. Misalignment can lead to premature wear and reduced performance.
  10. Test Operation:
    • Before mowing, start the mower and engage the blades to ensure that the new belts are functioning correctly. Listen for any unusual noises or vibrations.

Kubota Z725 Parts Manual

Sections :
  1. Introduction:
    • Provides an overview of the manual, safety information, and instructions on how to use the manual.
  2. Table of Contents:
    • Lists all the sections and subsections in the manual, making it easy to locate specific information.
  3. Illustrated Parts Diagrams:
    • Detailed diagrams of the various components of the mower, allowing you to identify parts and their corresponding numbers.
  4. Part Numbers and Descriptions:
    • A comprehensive list of parts, each accompanied by a part number, description, and quantity if applicable.
  5. Assembly Instructions:
    • Instructions on how to assemble specific components, especially if the mower comes in parts or if you need to replace major components.
  6. Exploded Views:
    • Visual representations of assemblies with parts exploded apart, aiding in understanding how components fit together.
  7. Maintenance and Lubrication:
    • Information on routine maintenance tasks, recommended lubricants, and intervals for different components.
  8. Troubleshooting:
    • Common issues, symptoms, and troubleshooting steps to help diagnose and fix problems with the mower.
  9. Belt Routing Diagrams:
    • Specific diagrams illustrating the correct routing of belts in the mower’s system.
  10. Specifications:
    • Technical specifications for various components, such as torque values, belt tension specifications, and other relevant data.
  11. Warranty Information:
    • Details about the warranty coverage for the mower and its components.

Kubota Z725 60 Inch Deck Parts

  1. Blades:
    • Three blades are typically used on a 60-inch deck. Regular maintenance or replacement is essential for optimal cutting performance.
  2. Deck Belts:
    • The deck is powered by belts that connect to the mower’s engine. Over time, these belts may wear out and require replacement.
  3. Deck Spindles:
    • Spindles are crucial components that support the mower blades. Inspect and replace them if there is excessive wear or damage.
  4. Idler Pulleys:
    • Idler pulleys help maintain proper tension on the deck belts. Check for smooth rotation and replace if necessary.
  5. Deck Wheels:
    • Wheels on the deck assist in maintaining an even cutting height. Inspect and replace any damaged or worn wheels.
  6. Deck Hangers and Brackets:
    • These components provide support and help secure the mower deck. Check for signs of wear or damage.
  7. Anti-Scalp Rollers:
    • These rollers help prevent scalping of the lawn during mowing. Inspect and replace if they show excessive wear.
  8. Belt Tensioning System:
    • The deck may have a system to adjust and maintain proper belt tension. Check for proper functionality and adjust as needed.
  9. Deck Lift Components:
    • If your mower has a deck lift mechanism, check for smooth operation and replace any damaged or worn components.
  10. Deck Shell:
    • The main structure of the deck. Inspect for cracks or rust, and address any issues promptly.

Kubota Z725 Blades

The Kubota Z725 zero-turn mower typically uses three blades for its 60-inch cutting deck. When looking for replacement blades, it’s essential to choose blades that are specifically designed for your mower model and deck size.

Blades that are too short, too long, or not designed for your specific mower may result in poor cutting performance and potential damage to the mower.

Here are some general guidelines when choosing replacement blades for the Kubota Z725:

  1. Blade Size:
    • Ensure that the replacement blades match the recommended size for your 60-inch cutting deck.
  2. Blade Type:
    • There are different types of mower blades, such as standard blades, mulching blades, and high-lift blades. Choose the type that suits your mowing preferences and conditions.
  3. Quality Material:
    • Blades are typically made of high-quality steel. Look for blades that are durable and can withstand the rigors of mowing.
  4. Blade Thickness:
    • Check the thickness of the blades. Thicker blades may provide more durability and longevity.
  5. Compatibility:
    • Ensure that the replacement blades are compatible with your specific Kubota Z725 model and deck configuration.
  6. Installation Instructions:
    • Follow the manufacturer’s instructions for proper installation of the blades. Proper installation is crucial for safety and optimal performance.

Kubota Z725 Oil Type and Filter

The oil type and filter for the Kubota Z725KH-3 can be identified as follows:

  1. Oil Type:
    • For the Kohler engine, the recommended oil is 10W-30.
    • For the Kawasaki engine, the recommended oil is also 10W-30
  2. Filter:
    • The Kubota Z725KH-3 uses the following filters:
      • Engine Oil Filter: Part# E7188-32110
      • Fuel Filter: Part# E7192-43120
      • Primary Fuel Filter Element: Part# E7182-00810
      • Safety Fuel Filter Element: Part# E7182-00820

It’s important to ensure that the recommended oil type and filters are used for the specific engine model to maintain optimal performance and reliability.

The oil and filter for the Kubota Z725KH-3 should be changed at regular intervals to ensure proper engine maintenance.

While the specific interval may vary based on usage and operating conditions, general guidance for oil and filter changes can be obtained from the following sources:

  1. User Manual: The user manual for the Kubota Z725KH-2-60 recommends regularly changing the engine oil and oil filter
  2. Maintenance Videos: There are instructional videos available for changing the oil and filter for both the Kohler and Kawasaki engines used in the Kubota Z Series, which can provide general guidance on the process
  3. Kubota Lubricants Maintenance Tables: The Kubota Lubricant Maintenance Tables provide comprehensive guidance on equipment lubrication, including oil and grease maintenance schedules.

Kubota Z725 Mulching Kit

A mulching kit typically includes components that enable the mower to efficiently mulch grass clippings rather than discharging them. While specific kits may vary, a standard mulching kit for a the Kubota Z725 will include the following components:

  1. Mulching Blades:
    • Specialized blades designed for mulching, featuring a unique shape that promotes finer grass cutting and better distribution of clippings.
  2. Mulching Deck Plug:
    • A plug or cover for the discharge chute, which redirects grass clippings back into the cutting deck for further mulching.
  3. Baffle System:
    • Internal baffles within the deck that help create a longer path for the grass clippings, allowing for more thorough mulching.

When installing a mulching kit on your Kubota Z725, it’s essential to follow the manufacturer’s instructions provided with the kit. Here are general steps you might follow:

  1. Remove the Mower Deck:
    • Depending on the design of your mower, you may need to remove the mower deck for easier installation of the mulching components. Follow the instructions in your mower’s manual.
  2. Replace Blades:
    • Swap out the existing blades with the mulching blades included in the kit. Ensure proper installation and torque settings.
  3. Install Mulching Deck Plug:
    • Attach the mulching deck plug to cover the discharge chute. This helps to recirculate the clippings for mulching.
  4. Install Baffle System:
    • If your mulching kit includes internal baffles, install them according to the provided instructions. Baffles help guide clippings for better mulching.
  5. Reassemble Mower Deck:
    • If you removed the mower deck, reattach it to the mower according to the manufacturer’s guidelines.
  6. Adjust Cutting Height:
    • Set the cutting height to your desired level. Mulching works best when grass is cut at the appropriate height.

Kubota Z725 Motion Control Lever Adjustment

The Kubota Z725 zero-turn mower features motion control levers that control the speed and direction of each wheel, allowing precise manoeuvrability.

If you need to adjust the motion control levers on your Kubota Z725 for improved performance or comfort, follow these general steps. Please note that specific adjustments may vary depending on your mower model, so always consult your operator’s manual for accurate instructions tailored to your machine:

  1. Park the Mower:
    • Ensure that the mower is on a flat and level surface. Set the parking brake, turn off the engine, and remove the key.
  2. Locate the Adjustment Bolts:
    • On each side of the mower, near the control levers, you’ll typically find adjustment bolts or nuts that control the lever height and neutral position.
  3. Adjust Lever Height:
    • To adjust the lever height, locate the adjustment bolt for each lever. Loosen the bolt, move the lever to your desired height, and then tighten the bolt securely. Ensure both levers are adjusted to the same height for even control.
  4. Adjust Neutral Position:
    • If your mower has an adjustment for the neutral position, locate the corresponding bolt or nut. Loosen it, adjust the lever to the neutral position, and then tighten the bolt securely.
  5. Check for Smooth Operation:
    • After making adjustments, test the motion control levers to ensure they move smoothly and have a consistent feel. The levers should return to the neutral position without resistance.
  6. Test Drive:
    • Start the mower and take it for a test drive to evaluate the new lever adjustments. Pay attention to responsiveness and ease of control.
  7. Fine-Tune if Necessary:
    • If further adjustments are needed, repeat the process until you achieve the desired lever height and neutral position.
  8. Consult the Manual:
    • Always refer to the operator’s manual for your specific Kubota Z725 model for any model-specific instructions or recommendations related to motion control lever adjustments.

Kubota Z725 Gas Tank Removal

Removing the gas tank on a Kubota Z725 zero-turn mower may be necessary for maintenance or repair purposes. Here are general steps to guide you through the process.

Keep in mind that these steps may vary depending on the specific model and design of your mower. Always consult your operator’s manual for accurate instructions tailored to your machine:

  1. Safety First:
    • Ensure the mower is on a flat and stable surface. Turn off the engine, set the parking brake, and remove the key to prevent accidental starting.
  2. Allow the Engine to Cool:
    • If the engine has been running, allow it to cool down before attempting to remove the gas tank to avoid the risk of burns.
  3. Locate the Gas Tank:
    • Identify the location of the gas tank on your Kubota Z725. The gas tank is usually located near the engine, typically beneath the seat or the mower frame.
  4. Disconnect the Fuel Line:
    • Before removing the gas tank, you’ll need to disconnect the fuel line. Locate the fuel line connection point on the gas tank and carefully disconnect it. Be prepared for some fuel spillage, so have a container or absorbent material ready.
  5. Remove the Gas Cap:
    • Unscrew the gas cap to release any pressure in the tank.
  6. Loosen Mounting Bolts or Straps:
    • Depending on the design, the gas tank may be secured with mounting bolts or straps. Use the appropriate tools to loosen and remove these fasteners.
  7. Carefully Remove the Gas Tank:
    • Once the mounting hardware is removed, carefully lift the gas tank from its mounting location. Be cautious of any remaining fuel in the tank and avoid spills.
  8. Inspect and Clean:
    • After removal, inspect the gas tank for damage or debris. Clean the tank if necessary.
  9. Replace or Repair:
    • If you are removing the gas tank for maintenance or repair, perform the necessary tasks. This may include cleaning, replacing fuel filters, or addressing any issues with the tank.
  10. Reinstallation:
    • To reinstall the gas tank, follow the steps in reverse order. Secure the tank with mounting bolts or straps, reconnect the fuel line, and tighten any fasteners securely.

Kubota Z725 Common Problems

Here are some issues that owners have reported with Kubota Z725:

  1. Cutting Issues:
    • Problems with cutting quality or uneven cutting may arise due to dull or damaged blades, an imbalanced cutting deck, or an issue with the mower’s leveling.
  2. Starting Issues:
    • If the engine has difficulty starting, it could be due to issues with the ignition system, fuel delivery, or a weak battery. Checking spark plugs, fuel filters, and the battery can help address these problems.
  3. Hydrostatic Transmission Issues:
    • Zero-turn mowers use hydrostatic transmissions, and issues like loss of power, poor performance, or difficulty in maneuvering may indicate problems with the transmission fluid levels, filters, or the transmission itself.
  4. Engine Problems:
    • Engine-related issues such as overheating, stalling, or loss of power may result from issues with the air filter, fuel system, or other engine components.
  5. Fuel System Problems:
    • Issues with the fuel system, such as clogged fuel filters, contaminated fuel, or a malfunctioning fuel pump, can lead to poor engine performance or stalling.
  6. Electrical Problems:
    • Electrical issues, including problems with the ignition system, safety switches, or wiring, can cause starting or running problems.
  7. Belt Wear and Slippage:
    • Belts that are worn or improperly tensioned may lead to reduced performance and cutting efficiency. Regularly inspect and replace belts as needed.
  8. Battery Issues:
    • A weak or dead battery can cause starting problems. Regularly check the battery’s charge and connections.
  9. Hydraulic Leaks:
    • Hydraulic systems can develop leaks over time. Check for any visible leaks around hydraulic components and address them promptly.
  10. Tire Issues:
    • Uneven tire pressure or damaged tires can affect the mower’s stability and steering. Regularly inspect and maintain tire condition and pressure.

To address these issues:

  • Follow the maintenance schedule outlined in your operator’s manual.
  • Regularly inspect and clean the mower, paying attention to critical components.
  • Address any issues promptly to prevent further damage.
  • If you are unsure or unable to resolve a problem, seek assistance from a qualified technician or your local Kubota dealership.

Kubota Z725 Engine Problems:

Here are some common engine-related issues and possible solutions:

  1. Hard Starting or Not Starting:
    • Possible Causes:
      • Fuel system issues (clogged fuel filter, stale fuel, etc.).
      • Ignition system problems (faulty spark plug, ignition coil, etc.).
      • Carburetor issues.
    • Solutions:
      • Check and replace the fuel filter if clogged.
      • Ensure you are using fresh and clean fuel.
      • Inspect and replace the spark plug if necessary.
      • Clean or rebuild the carburetor if needed.
  2. Engine Overheating:
    • Possible Causes:
      • Low engine oil levels.
      • Cooling system issues (clogged radiator, malfunctioning thermostat, etc.).
      • Mowing in extremely hot conditions.
    • Solutions:
      • Check and maintain proper engine oil levels.
      • Clean the radiator and ensure proper airflow.
      • Avoid mowing in extreme heat conditions when possible.
  3. Loss of Power:
    • Possible Causes:
      • Dirty or clogged air filter.
      • Fuel delivery issues.
      • Carbon buildup in the combustion chamber.
    • Solutions:
      • Replace the air filter.
      • Check and clean the fuel system components.
      • Perform routine maintenance to prevent carbon buildup.
  4. Stalling or Cutting Out:
    • Possible Causes:
      • Carburetor issues.
      • Fuel system problems.
      • Ignition system issues.
    • Solutions:
      • Clean or rebuild the carburetor.
      • Inspect and clean the fuel system components.
      • Check and replace faulty ignition components.
  5. Excessive Smoke:
    • Possible Causes:
      • Oil overfill.
      • Worn piston rings.
      • Valve seal issues.
    • Solutions:
      • Check and correct oil levels.
      • If excessive smoke persists, consult a professional for a more in-depth diagnosis.
  6. Abnormal Noises:
    • Possible Causes:
      • Worn or damaged engine components.
      • Loose or damaged belts.
      • Internal engine issues.
    • Solutions:
      • Inspect and replace worn or damaged parts.
      • Check and tighten belts.
      • Consult a professional for further diagnosis if necessary.

Kubota Z725 Tire Issues

Here are some common tire-related problems and potential solutions:

  1. Uneven Tire Pressure:
    • Possible Causes:
      • Uneven tire pressure between the front and rear tires.
    • Solutions:
      • Check and adjust tire pressure according to the manufacturer’s recommendations. Ensure that both front and rear tires have the correct pressure.
  2. Tire Damage or Wear:
    • Possible Causes:
      • Cuts, punctures, or wear on the tire treads.
    • Solutions:
      • Inspect the tires regularly for visible damage. Replace any tires that are excessively worn or damaged.
  3. Flat Tires:
    • Possible Causes:
      • Punctures or leaks.
    • Solutions:
      • Repair punctures using a tire repair kit if the damage is within the repairable limits. Otherwise, replace the tire.
  4. Bent or Damaged Wheels:
    • Possible Causes:
      • Impact with obstacles or uneven terrain.
    • Solutions:
      • Inspect wheels for visible damage. Bent wheels may need replacement.
  5. Imbalanced Tires:
    • Possible Causes:
      • Uneven tire wear.
    • Solutions:
      • Rotate the tires regularly to promote even wear. If uneven wear persists, check for alignment issues or other underlying problems.
  6. Loose or Missing Lug Nuts:
    • Possible Causes:
      • Lug nuts that have become loose or are missing.
    • Solutions:
      • Check and tighten lug nuts to the manufacturer’s specifications. Replace any missing lug nuts.
  7. Steering Issues:
    • Possible Causes:
      • Uneven tire pressure.
      • Damaged or imbalanced tires.
    • Solutions:
      • Ensure even tire pressure on all tires. Inspect and address any tire damage or wear.
  8. Excessive Vibration:
    • Possible Causes:
      • Out-of-balance tires.
      • Damaged wheels.
    • Solutions:
      • Balance the tires if necessary. Inspect and replace damaged wheels.