How to Replace the Blades on Your Robot Lawn Mower?

How to Replace the Blades on Your Robot Lawn Mower

Maintaining your robot lawn mower is essential for optimal performance, and one crucial aspect is replacing the blades when needed. Whether they’re worn out or damaged, a simple blade replacement can significantly enhance your mower’s efficiency. In this comprehensive guide, we’ll walk you through the step-by-step process of replacing the blades on your robot lawn mower, ensuring your lawn stays perfectly manicured.

Step-by-step Guide to Changing Blades

Step 1: Gather Your Tools: Before starting the blade replacement process, gather the necessary tools. You’ll typically need a wrench, pliers, and safety gloves. Ensure your robot lawn mower is turned off and disconnected from the power source for safety.

Step 2: Identify the Blade Assembly: Locate the blade assembly beneath your robot lawn mower. Depending on the model, this assembly may have a cover or guard that needs to be removed. Use the wrench and pliers to carefully take off any screws or bolts securing the cover.

Step 3: Remove the Old Blades: Once the blade assembly is accessible, carefully remove the old blades. Pay attention to the orientation of the blades and how they are attached to the assembly. Take note of any washers or spacers that may be present.

Step 4: Clean the Blade Area: Before installing the new blades, take a moment to clean the blade area. Remove any grass clippings, debris, or residue that may have accumulated. This ensures a clean and smooth operation of the new blades.

Step 5: Install the New Blades: Place the new blades onto the blade assembly, making sure they align correctly with any notches or indents. If there are washers or spacers, ensure they are in the proper position. Tighten the bolts or screws to secure the new blades in place.

Step 6: Check Blade Tightness: After installing the new blades, give them a gentle tug to ensure they are securely fastened. Blades should be tight to prevent any wobbling during operation. If needed, use the wrench to tighten the bolts further.

Step 7: Replace the Blade Cover: If your robot lawn mower has a blade cover or guard, reattach it securely using the wrench and pliers. This cover not only protects the blades but also adds an extra layer of safety during operation.

Step 8: Test the Mower: Before putting your robot lawn mower back into regular operation, conduct a quick test. Turn on the mower and observe the blades’ rotation. Ensure there’s no unusual noise or vibration, indicating that the new blades are functioning correctly.


Regular maintenance, including blade replacement, is crucial for keeping your robot lawn mower in top condition. By following this step-by-step guide, you can easily replace the blades and enjoy a well-maintained lawn throughout the mowing season. Remember to consult your mower’s user manual for model-specific instructions and safety precautions. With proper care, your robot lawn mower will continue to provide efficient and reliable service, making lawn maintenance a breeze.

Frequently Asked Questions

Why is maintaining my robot lawn mower important?

Regular maintenance ensures optimal performance, prolongs the mower’s lifespan, and keeps your lawn looking its best.

When should I replace the blades on my robot lawn mower?

Replace blades when they are worn out or damaged. Signs include reduced cutting efficiency or uneven lawn appearance.

Can I replace the blades on my robot lawn mower myself?

Yes, you can! Follow our step-by-step guide, gather tools like a wrench and pliers, and ensure safety by disconnecting the mower from the power source.

How long do robot mower blades last?

The lifespan of robot mower blades varies, but on average, they last about 2 to 3 months before needing replacement. Factors like frequency of use, grass type, and mower maintenance can impact blade durability.