Quick answer
If your robot mower is making more noise than normal, this is usually caused by an issue with the blades, loose screws, long grass, or debris trapped underneath the blade carrier.
Most noise issues can be resolved by checking the mower blades, cleaning underneath the mower, and ensuring all parts are fitted correctly.
Before you begin
Before checking your robot mower:
- Switch off the mower
- Remove it from the charging station
- Place the mower on a safe surface with the blades facing upwards
- Avoid touching the blades while the mower is switched on
- Check that the mower is clean and free from grass or debris
Steps
1. Check the blades for damage or wear
Damaged or worn blades can cause increased noise while the mower is operating.
Check the blades for:
- Damage or cracks
- Excessive wear
- Bent blades
- Loose blade movement
If the blades are damaged, replace them:
- Remove the screws holding the blades in place.
- Remove the old blades from the blade carrier.
- Fit the new blades securely.
- Check that the blades can still move freely.
A spare set of blades is included with most robot mowers. Replacement blades can also be purchased through the spare parts section of the website.
2. Check the blade screws are secure
Loose blade screws can cause additional noise during operation.
To check:
- Make sure the mower is switched off.
- Check the screws holding the blades in place.
- Tighten any loose screws.
Do not overtighten the screws, as the blades need to move freely during operation.
3. Check for dirt or debris under the blade carrier
Grass, dirt, and debris can become trapped underneath the blade carrier and increase noise.
To clean underneath the blade carrier:
- Switch off the mower.
- Turn the mower over with the blades facing upwards.
- Remove the screws holding the blade carrier in place.
- Lift the blade carrier away.
- Remove any trapped dirt, grass, or debris.
- Refit the blade carrier and tighten the screws.
4. Check the grass height
Long grass can make the mower work harder and create more noise.
To help:
- Increase the cutting height setting on the robot mower.
- Cut the grass with a standard lawn mower first if it has become too long.
- Allow the robot mower to maintain the grass height gradually.
5. Check for possible motor issues
If the noise is accompanied by slow or uneven blade movement, there may be an issue with the cutting motor.
Signs of a possible motor problem include:
- Cutting blades turning slowly
- Stuttering blade movement
- The mower struggling to cut normally
If these symptoms continue after completing the checks above, contact our support team for further assistance.
Frequently Asked Questions
Why is my robot mower suddenly louder?
The most common causes are damaged blades, loose screws, long grass, or debris trapped underneath the blade carrier.
How often should I replace robot mower blades?
Blade replacement depends on usage and lawn conditions. Replace blades when they become worn, damaged, or when cutting performance reduces.
Can I use the robot mower on long grass?
Robot mowers work best when maintaining grass that is already at a suitable height. If grass becomes too long, cut it down first and then restart the mower.
Why is my robot mower making a grinding or unusual noise?
A grinding or unusual noise may be caused by debris trapped underneath the blade carrier or damaged mower components. Check and clean the underside of the mower before further use.
What should I do if my robot mower is still noisy after checking the blades?
If the noise continues after checking the blades, screws, grass height, and underside of the mower, contact our support team through live chat for further assistance.