How to Change Blades on Kubota Mower Deck : A Comprehensive Guide

To change blades on kubota mower deck: first, remove the old blades and then attach the new ones. The kubota mower’s blade-changing process is straightforward and only requires basic tools and safety precautions.

Kubota mowers are powerful machines that boast of top-quality performance and durability. However, like with most machines, the blades can become dull or damaged after prolonged use. To keep up with routine mowing, you will need to replace the blades. For any kubota operator, changing blades on a kubota mower deck is a simple process that can be accomplished with only a handful of tools. In this guide, we’ll walk you through the steps and tools needed to change your kubota mower blades quickly and safely. With a little know-how, you’ll be able to know how to replace blades on kubota mowers and keep your equipment running smoothly all season long.

Safety Measures To Take Before Changing Blades

Changing blades on a kubota mower deck is a necessary maintenance task to ensure the mower continues to work efficiently. However, changing blades can be dangerous and cause severe injuries if not done correctly. This section focuses on safety measures to take before changing blades to ensure a safe and accident-free process.

Wearing The Right Protective Gear

Wearing suitable protective gear is the first step to take before changing blades. Mower blades rotate fast, and direct contact with them can cause serious injuries. Wearing the appropriate protective gear can reduce the risk of injury and help protect the operator from any debris that may be ejected during the blade changing process.

The right protective gear includes:

  • Safety goggles or glasses
  • Heavy-duty gloves
  • Safety boots with slip-resistant soles
  • Long-sleeved shirts and pants

Disconnecting The Spark Plug

Before starting the blade change, the operator must disconnect the spark plug to prevent the engine from accidentally starting. Some mowers have an electric start system that may turn over the engine when removing the blades. This action creates a risk of laceration or amputation.

As such, disconnecting the spark plug is critical to prevent any such occurrence.

Prohibiting Access To Underage People

Strict measures should be put in place to prevent children or minors from accessing the work area during blade change. Mower blades can cause serious injuries, and, in some cases, lead to amputation. Hence the need to keep underage individuals away from the work area, even when wearing the right protective gear.

Disposing Of Old Blades

After changing the blades, disposing of worn-out or old blades is a crucial step to take. Blades can be dangerous if not disposed of correctly and can pose a risk to people or even animals. The operator should take extra care when disposing of old blades to prevent injuries.

When disposing of old blades:

  • Make sure the blades are recycled appropriately or taken to the junkyard.
  • Never dispose of the blades with the household waste or mix them with other metal equipment.

By following all the safety measures mentioned above, the operator can work with more confidence and reduce the risk of injury during the blade changing process. Remember to switch off the engine, let it cool, and wait for the blades to stop before starting the blade change.

Steps For Changing Blades

Changing the blades of a kubota mower deck is an easy task that anyone can accomplish. However, before you can install the new blades, it is important to assess the condition of the old ones. This is because dull blades can be dangerous, and if not changed, they can also cause damage to the lawn.

Here are the steps for changing the blades on a kubota mower deck.

Step 1: Evaluating The Condition Of The Blades

Before starting the blade replacement process, it is important to check the condition of the blades. Look for signs of wear and tear such as bent, chipped, or dull blades. If the blades are in bad shape, it is best to replace them entirely, as they can cause harm to the lawn.

Step 2: Raising The Mower Deck

With the inspection complete, the next step is raising the mower deck. The process of raising the deck may differ depending on the model of kubota mower, so it is best to consult the user manual for instructions.

Step 3: Removing The Blade’S Retaining Nut

Once the mower deck is raised, locate the blade’s retaining nut beneath the deck. To remove it, place a block of wood between the blade and the mower deck. This will prevent the blade from turning while you loosen the retaining bolt.

Unscrew the bolt using a socket wrench, taking care not to damage the threads.

Step 4: Removing The Old Blades

After you have removed the retaining nut, remove the old blade and inspect the spindle to ensure it is in good condition. If the spindle is damaged, it may need to be replaced.

Step 5: Positioning The New Blades

Position the new blades onto the spindle with the sharp edge facing downwards. Make sure that the blade is positioned correctly, with the label facing outwards, and the blade’s bottom side facing the ground.

Step 6: Reinstalling The Blade Retaining Nut

With the new blades in place, reattach the retaining nut and tighten it using a socket wrench. Be sure to not over-tighten the nut, as this could damage the thread.

Step 7: Lowering The Mower Deck

Once you have tightened the retaining nut, lower the mower deck to its original position. Make sure that the blades are at an equal height and the deck is level before resuming use.

Changing the blades on a kubota mower deck is straightforward, provided that the user takes care not to damage the threads and spindle and follows the correct steps. By following these simple steps, anyone can install new blades on their mower deck and have a safe, enjoyable and perfectly manicured lawn.

Time to change the blades. Kubota 60" mower deck blade Removal & replacement.

Things To Keep In Mind Once Blade Change Is Done

Congratulations! You have successfully changed the blades of your kubota mower deck. Now, you need to keep in mind some important things to ensure that your mower stays in good condition.

Proper Inspection Of The Blades’ Positioning

After you change the blades of your mower deck, you need to make sure that they are properly positioned. If they are not, the mower may not cut grass evenly.

  • Turn off the engine and set the parking brake.
  • Carefully inspect the blades to ensure that they are in the correct position.
  • If the blades are not in the correct position, remove them and reinstall them properly.
  • Check the other components of the mower deck to ensure that they are not damaged.

Maintenance Schedule

Now that you have changed the blades, it is important to follow a regular maintenance schedule to keep your mower in good condition.

  • Check the air filter and clean or replace it as needed.
  • Check the oil level and change it according to the manufacturer’s instructions.
  • Keep the blades sharp by sharpening them as needed.
  • Keep the underside of the mower deck clean to prevent buildup of grass and debris.
  • Lubricate the mower according to the manufacturer’s instructions.
  • Check all belts and hoses to ensure that they are not loose or damaged.

Sharpening Blades When Dull

Keeping your blades sharp is important to ensure that your mower cuts grass evenly.

  • Remove the blades from the mower deck.
  • Use a file or grinder to sharpen the blades.
  • Make sure that each cutting edge is sharpened at the same angle to ensure even cutting.
  • Check the balance of the blades by hanging them from a nail or screwdriver. If one end of the blade is heavier, remove a little bit of metal from that end until the blade is balanced.

By following these tips, you can ensure that your kubota mower deck stays in good shape for years to come.

Troubleshooting Common Problems

Bolt Tightness

Maintaining the correct bolt tightness is crucial to changing blades on your kubota mower deck without frustration. Some common problems caused by incorrect bolt tightness include the inability to unscrew bolts, stripped bolts and warping the mower deck.

  • Always allow the mower deck to cool down before attempting to change the blades.
  • Use a torque wrench to tighten the bolts to the manufacturer’s recommended tightness – check your kubota owner’s manual for the specific torque measurement.
  • If you don’t have a torque wrench, be sure to tighten the bolts as tightly as you can without straining yourself.
  • If you are having trouble removing the bolts, try spraying them generously with a penetrating oil to loosen them up.

Blades Positioning

Another common problem while changing blades on kubota mower is improper blade positioning. Incorrect blade positioning can cause poor cutting performance, uneven cutting and even damage to the blades and mower deck.

  • Always make sure the new blades match the old blades in size, shape, and number of mounting holes.
  • Before removing blades, make a note or mark them to remember the side of the machine they were on.
  • Use a leveling tool to check and make sure all blades are at the same height.

Blade Alignment With The Kubota Drive

The blade alignment with the kubota drive is crucial to ensure proper mowing. Misaligned blades can cause damage to the mower deck, poor cutting performance and even cause the deck belt to come off.

  • Check for any bends, warping or damage on the old or new blades before installing them.
  • Ensure that the blades are installed with the cutting edge facing in the right direction.
  • Check the alignment of the blade with the drive system – use a ruler or straight-edge across the blades to check if they are perpendicular to the ground.
  • Double-check and adjust the blade alignment if necessary to ensure the blades mow the same path.

By following these key points while changing blades on your kubota mower, you can troubleshoot common problems and keep your equipment in top condition. Happy mowing!

Frequently Asked Questions For How To Change Blades On Kubota Mower Deck

How Often Should I Change My Kubota Mower Deck Blades?

It is generally recommended to change blades after every 50 hours of use or at the beginning of every mowing season.

What Is The Right Way To Remove The Kubota Mower Deck Blades?

First, disconnect the spark plug wire for safety. Then, remove the bolt holding the blade and lift it off carefully.

What Should I Be Cautious Of When Changing The Blades On Kubota Mower Deck?

Ensure the mower has cooled down, switch off the engine, and check blades for damage, wear, or rust before changing.

What Factors Should I Consider Before Buying The Blade For My Kubota Mower Deck?

Measure the blade length, thickness, width, and hole diameter, and check its compatibility with your kubota model and usage requirements.


Maintaining and replacing kubota mower blades might seem like a daunting task, but it is actually a straightforward process. With the right tools and knowledge, you can confidently change blades on your kubota mower deck and ensure optimal performance. Remember to prioritize safety and carefully follow the steps outlined in this guide.

By making blade maintenance a routine task, you can protect your investment and achieve a cleaner, more efficient cutting experience. Don’t overlook the importance of proper blade care and replacement, as neglecting this aspect of mower maintenance can lead to higher expenses and frustration down the line.

Keep your mower in top condition and enjoy a flawless mowing experience with regular blade replacement.

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