Lawn mower blades take a lot of abuse as they contact the ground with every revolution. Over time, they can become bent or unbalanced, which can lead to poor cutting performance and uneven lawns.

One way to fix this problem is to balance the blade using a star hole. This method is relatively simple and only requires a few tools. First, remove the blade from the mower and unscrew the star hole cover.

Next, insert a rocker arm into the star hole and use it to prop up the blade. Finally, retighten the cover and reattach the blade to the mower. It is wise to learn how to balance mower blade with star hole by following these steps and being ready to provide a clean, even cut.

How to Balance Mower Blade With Star Hole : Step By Step Guide

How to Balance Mower Blade With Star Hole Step By Step Guide

Some people believe that they don’t need to balance their mower blades. They think that it will be fine with the blade attached to the mower. If your mower blade is unbalanced, you run the risk of damaging your mower and lawn.

Balancing a lawn mower blade is easy and only takes a few minutes. Just follow these simple steps:

Step 01. Remove the Blade:

The first step is to remove the blade from the mower. You’ll need a wrench to do this. The blade should then be thoroughly cleaned of dirt and debris that may interfere with its balance.

Once the blade is clean, inspect it for damage. If there are cracks or chips, you’ll need to replace them. The edge of the blade should be sharp and free of nicks. If it’s not, you’ll need to sharpen it.

Step 02. Attach the Star Hole Blade Balancer Adapter:

To attach the star hole lawn mower blade balancer adapter, first find the right side of the blade. This is typically the edge with the sharpest point. Then, line up the holes on the adapter with the holes on the lawn mower blade.

Once the mower blade holes are aligned to the adapter holes, insert the adapter through the holes to secure the adapter to the blade. After the adapter is attached, your mower blade is now ready to be balanced.

Step 03. Check the Balance:

Check the balance of your mower mulching blade by putting it on a blade balancer. The blade should hang level without wobbling from side to side. One portion of the blade can be prone down due to a balance problem.

If the blade is unbalanced, use a file or grinder to remove metal from the heavy side until it is balanced. Once the blade is balanced, reattach it to the mower and tighten the bolts after rechecking its balance. Ensure it is still level before starting the mower.

Step 04. Re-check the Balanced Blade:

Rechecking the newly balanced blade step is very important. You need to make sure that the blade is secure and will not move around when operating the mower. This can be done by checking the level of your mower blade.

Step 05. Attach the Blade to Mower:

Now, it’s time to reattach the blade to the mower. Ensure that the blade bolt holes are lined up and insert the bolts. Be sure to use a wrench to tighten the bolts. If your blade is not properly attached, it can cause severe damage to your lawn mower.

Turn on the mower after the blade is attached and recheck the rotating balance. The blade should be level and should not wobble from side to side. You’ll need to adjust the bolts until the blade is level if it does.

By following these steps, your mower’s blade is balanced and will cut grass evenly. Ensure not to get cut by the blade while checking the balance. Do not over-tighten the blade, as it might damage the mower.

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What is the Purpose of Balancing a Mower Blade?

What is the Purpose of Balancing a Mower Blade

Any lawn enthusiast will tell you that a well-groomed lawn is the key to a healthy and happy yard. One of the essential steps in keeping your property looking its best is to ensure that your lawn mower blade is appropriately balanced.

You should maintain the blade balance for a variety of reasons, for instance:

  • It will help ensure an even cut every time you mow the lawn.
  • A balanced lawn mower blade reduces vibration, which makes using your mower easier and more comfortable.
  • It also increases the lifespan of your lawn mower by reducing wear and tear on the engine and other parts.
  • Last but not least, a balanced lawn mower blade is simply more efficient, meaning you’ll use less fuel and save yourself time and money in the long run.

As you can see, there are many reasons for balancing your mower blade. By ensuring that your blade is balanced correctly, you can save yourself a lot of time and effort over time.


A few commonly asked questions regarding balancing mower blades with star holes are described below:

01: Do Lawn Mower Blades Need to Be Balanced?

It is generally recommended that lawn mower blades be balanced at least once per season. Otherwise, the mower could vibrate excessively, making it difficult to control.

An unbalanced blade can cause premature wear on the mower’s engine and other parts.

02. Does the Mower Blade Orientation Matter?

Mower blade orientation certainly matters when you are mowing your lawn. The direction of the blades will affect how the grass is cut and how evenly it will be cut.

If the blades are not correctly aligned, you may end up with patches of grass that are longer or shorter than others.

03. What Causes a Lawn Mower to Shake?

A lawn mower may shake for several reasons. One common cause is imbalanced or damaged blades. As the blades rotate, the mower will vibrate if not properly balanced. Weak or worn-out parts can cause a mower to shake.

04. How Often Should Mower Blades Be Balanced?

Experts recommend balancing mower blades every time you sharpen them or every 25 hours of mowing time. This may seem like extra work, but it’s pretty simple. And the benefits are significant. Balanced blades result in a healthier lawn and a more precise cut.


Mower blades become unbalanced over time as they are sharpened and dull. This can cause the mower to vibrate and create an uneven cut. To help prevent this, it is important to occasionally check the balance of the blades and adjust it as needed.

If the blade is balanced, it will stay in place. If it starts to wobble, you will need to add or remove weight to the particular side. By balancing your blade, you can ensure that your mower will operate smoothly and provide a clean cut.

Hopefully, this article has provided you with the information you need to balance your mower blade properly.