One Mower Blade Lower Than the Other(Fix this In 3 Steps)

Maintaining a lush and well-kept lawn is a source of pride for many homeowners. However, one common issue that can put a dent in your lawn’s aesthetics is having one mower blade lower than the other.

In this post, we will delve into the reasons behind this problem and provide you with practical solutions to ensure your lawn remains picture-perfect.

Let’s dive in.

One Mower Blade Lower Than the Other

Common Causes of Uneven Mower Blades

One Mower Blade Lower Than the Other

1. Worn-Out Blades

One of the primary reasons for uneven mower blades is the wear and tear of the blades themselves.

Over time, mower blades can become dull, bent, or unevenly worn, causing one side to be lower than the other.

One Blade Cutting Lower Than Other

Worn-out blades will not provide the clean, precise cuts necessary for a healthy lawn.

Instead, they will tear the grass blades, leaving them vulnerable to diseases and stress. Regular inspection and maintenance of your blades are essential to avoiding this issue.

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2. Improper Installation

Sometimes, mower blades are not installed correctly, which can result in uneven cutting heights. Ensuring proper installation is key to maintaining an even cut.

When mower blades are improperly installed, they can sit at different angles or heights, causing uneven cuts.

To resolve this issue, refer to your mower’s manual for guidance on the correct installation procedure.

3. Uneven Deck

An uneven mower deck can also contribute to this problem. If the deck is not level, it can cause the blades to have varying heights, resulting in an uneven cut.

Uneven Mower Blade

The mower deck should be level both from side to side and from front to back. If it isn’t, it will tilt the blades and lead to uneven mowing.

Deck levelling is usually adjustable and can be done with the help of your mower’s user manual.

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Troubleshooting Uneven Mower Blade

1. Blade Replacement

If your mower blades are worn out or damaged, it’s essential to replace them. Sharp, balanced blades are crucial for an even cut.

When replacing blades, make sure to choose the right type and size for your mower.

Also, consider sharpening your blades regularly during the mowing season to maintain a consistent, clean cut.

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2. Blade Adjustment

Check your mower’s manual for instructions on adjusting the blades. This can help level them out and ensure a uniform cut.

Blade adjustment is an important step in achieving an even cut.

By following your mower’s guidelines, you can make precise adjustments to ensure that the blades are level, resulting in an aesthetically pleasing lawn.

3. Deck leveling

To address an uneven mower deck, you’ll need to level it properly. Follow your mower’s instructions to adjust the deck to the correct height.

Deck leveling is crucial for achieving a uniform cut. A level deck ensures that the blades maintain the same height across the entire mowing width.

By adjusting the deck according to your mower’s specifications, you can eliminate the issue of uneven cutting.

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Importance of a Level Mower Blade

Why Mower Blade Leveling Matters

A properly leveled mower blade is crucial for achieving an even and clean-cut lawn. Let’s dive deeper into why this matters.

Effects on lawn health

Uneven grass height can also impact the health of your lawn. Some areas might receive excessive trimming while others remain untouched, leading to an imbalance in growth and potentially harming the overall health of your grass.

Unevenly cut grass may create an environment where some areas become more susceptible to diseases, pests, and weed infestations.

It can also hinder the grass’s ability to photosynthesize effectively, reducing its vigor and resilience.

Furthermore, areas with unevenly cut grass may retain more moisture or be more prone to drying out, depending on their height.

This can result in uneven watering patterns, further stressing your lawn.

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One Blade Cutting Lower Than Other

Causes of Uneven Mower BladesTroubleshooting and Solutions
1. Worn-Out Blades Blade Replacement 
– Blades can become dull, bent, or unevenly worn over time.– Replace worn-out blades with sharp, balanced ones to ensure an even cut.
– This can cause one side to cut lower than the other.– Purchase high-quality replacement blades suitable for your mower and install them according to the manufacturer’s instructions.
2. Improper Installation Blade Adjustment 
– Incorrect blade installation can lead to uneven cutting heights.– Check your mower’s manual for guidance on blade adjustment.
– Blades must be properly installed to maintain uniformity.– Properly adjusted blades are crucial for maintaining an even lawn.
3. Uneven Deck Deck Leveling 
– An uneven mower deck can contribute to uneven cutting.– An uneven mower deck can lead to uneven cutting.
– If the deck isn’t level, it can cause the blades to vary in height.– Deck leveling is essential to correct this issue.
– Adjust the mower deck to the manufacturer’s recommended level for a consistent cut.– Refer to your mower’s manual for deck leveling instructions.
 – Make the necessary adjustments to ensure the deck is level from side to side and front to back.

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Maintaining a Beautiful Lawn

Regular Maintenance 

Preventing the issue of one mower blade being lower than the other begins with regular maintenance. Keep your blades sharp and the deck level to ensure an even cut every time.

Regular maintenance is the key to a healthy lawn. Sharpen your blades at the beginning of each mowing season and periodically throughout the season, especially if you have a large lawn.

Additionally, check the deck level before each mowing session to guarantee an even and attractive cut.

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Lawn care tips

Additionally, consider implementing proper lawn care practices such as regular watering, fertilization, and aeration to promote healthy and even grass growth.

While fixing the issue of uneven mower blades is essential, holistic lawn care practices are equally important.

Adequate watering, appropriate fertilization, and periodic aeration contribute to uniform grass growth and overall lawn health.

Combining proper mower maintenance with these practices will result in a lush and vibrant lawn.

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Final Remarks

Having “one mower blade lower than the other” can negatively impact the appearance and health of your lawn.

By addressing the root causes and implementing the suggested solutions, you can maintain a beautiful and well-groomed lawn that you can be proud of.


How often should I sharpen my mower blades?

It’s recommended to sharpen your mower blades at least once a season, or more frequently if you have a large lawn.

Can I level the mower deck myself, or should I hire a professional?

You can level the mower deck yourself by following the manufacturer’s instructions, but if you’re unsure, it’s best to consult a professional.

Will uneven mower blades damage my lawn permanently?

While it can harm your lawn’s health in the short term, implementing corrective measures should prevent permanent damage.

Are there any signs that indicate my mower blades need replacement?

Yes, signs include ragged grass tips, uneven cutting patterns, and a decrease in overall mowing efficiency.

Is it essential to follow a specific schedule for lawn care practices?

Yes, following a seasonal lawn care schedule helps ensure consistent and healthy grass growth throughout the year.

George Bill
George Bill

George Bill is a Mechanical Engineer by Profession and an avid gardener and has been mowing his lawn for over 20 years. He has used a variety of different mowers during this time.
George is an expert at maintaining his mowers and over the years, he has learned many tricks and techniques for getting the best results from his mowers and is always happy to share his knowledge on this site.