Robot Lawnmower

Quick Answer

If your Amiro 400i robotic lawnmower has become noisier during operation, the most common cause is loose grub screws securing the blade adapter or a damaged cutting blade. Tightening the grub screws and inspecting the blades can often reduce the noise.

Tip: Always switch the mower off before carrying out any inspection or maintenance underneath the machine.

Before You Start

Before inspecting the cutting mechanism:

• Switch the robotic lawnmower off
• Remove the safety key (if applicable)
• Place the mower upside down on a soft, stable surface with the blades facing upwards
• Wear protective gloves when working near the cutting blades

Important: Never carry out maintenance while the mower is switched on or connected to its charging station.

How to Reduce Blade Noise

Follow these steps to check and tighten the blade assembly.

1. Remove the blade carrier

Using a suitable screwdriver:

• Remove the three screws securing the blade carrier
• Carefully lift the blade carrier away and place it to one side

This will expose the silver blade adapter underneath.

2. Tighten the grub screws

Rotate the silver blade adapter until you can see the grub screw(s).

Depending on your mower, there may be:

• One grub screw
• Two grub screws

Using a small flat-head screwdriver:

• Tighten each grub screw securely
• Do not overtighten

Loose grub screws can allow movement within the blade assembly, resulting in increased operating noise.

3. Refit the blade carrier

Once the grub screws have been tightened:

• Reposition the blade carrier
• Reinstall the three retaining screws
• Ensure the blade carrier is securely fitted

The mower is now ready to be tested.

Inspect the Cutting Blades

While the blade carrier is removed, inspect the cutting blades for:

• Damage
• Chips
• Cracks
• Excessive wear
• Bent blades

Damaged blades are one of the most common causes of increased cutting noise and should be replaced before using the mower again.

Tip: Replace all blades together to maintain balanced cutting performance.

If the Noise Continues

If the mower is still excessively noisy after tightening the grub screws and checking the blades:

• Confirm the blade carrier is securely fitted
• Check that all retaining screws are tightened correctly
• Inspect the underside of the mower for loose components

If the problem persists, please contact our customer service team via Live Chat or submit a support ticket for further assistance.

Important Maintenance Tips

• Check the blade screws regularly during the mowing season
• Inspect the blades for wear or damage after striking hard objects
• Keep the underside of the mower clean and free from grass build-up
• Replace worn blades promptly to maintain cutting performance
• Always use suitable tools when carrying out maintenance

Frequently Asked Questions

Why has my Amiro 400i become louder?

The most common causes are loose grub screws in the blade adapter or worn or damaged cutting blades.

How many screws hold the blade carrier in place?

The blade carrier is secured with three screws.

What are grub screws?

Grub screws secure the blade adapter to the motor shaft. If they become loose, they can cause additional vibration and noise.

Should I check the blades while the carrier is removed?

Yes. Inspect the blades for damage or excessive wear and replace them if necessary.

What should I do if tightening the grub screws doesn't reduce the noise?

If the noise persists after completing these checks, please contact our customer service team via Live Chat or submit a support ticket for further assistance.

Overview

The Cloudhawk App is a digital platform designed to help users monitor and manage your robot lawnmower.

After registration and setup, users can connect their Yard Force Robot Lawnmower.

Please find a video walk through:

Step 1: Download and Access the App

• Download the Cloudhawk app.
• Agree to the terms
• Select ‘Get Started’

Step 2: Register & Create an Account

1. Click ‘Register’.
2. Enter your email address.
3. Click ‘Send Code’ to receive a verification code via email.
4. Enter a new password ‘twice’ and click ‘Next’.

Step 3: Verify Your Email

1. Check your inbox for a verification email.
2. Click the verification link to activate your account.
3. If not received, check spam/junk folders.
4. Select Country and choose ‘User Name’

Step 6: Connect 

1. Allow Cloudhawk to find, connect to and determine the relative position of nearby devices – Click ‘Allow’.

2. Location Permissions Needed – Click ‘OK’.
3. Confirm successful connection status.

Step 8: Add your mower

1. Click + to add mower.
2. Select Bluetooth if you have a Bluetooth Phone.
3. Enter ‘Serial Number’ (found on the sticker on rear of device above the QR code or in the app Click on QR code icon to scan).
4. Allow the app permission to use your camera
5. Ensure both Bluetooth & Location services are enabled. Click ‘continue’
6. Turn on the mower using the key on the rear of machine and Click ‘Search’.
7. Once paired you will get a confirmation message.
8. Your mower will appear under ‘My Devices’ tab.
9. Green indicator shows the robotic mower is online and ready to access.
10. Click on the image to manger the robotic mower.

Step 9: Operating

• ‘Connected’ will be displayed top right of screen.
• Click on ‘Modify Schedule’.
• Click + to add a cutting time range
• Schedule a start time on the relevant day.
• Schedule an end time on the relevant day. (You are able to schedule up to two sessions per day)
• Repeat until you have completed the entire week.
• Save Schedule
• Click ‘back arrow’ to return to home screen.
• Use the function keys at the bottom of the app for direct control instant to start and stop mowing.

MB400 CloudHawk App Operation

Overview

The MB400 robotic mower uses the CloudHawk App to allow users to set up, control, and monitor the mower from a smartphone.

To operate the MB400 successfully, the mower must first be registered, linked to your account, and connected via Bluetooth. After installation, the app becomes the central control system for everyday use, including scheduling and monitoring.

Please find a video walk through:

Step 1: Download and Access the App

• Download the Cloudhawk app.
• Agree to the terms
• Select ‘Get Started’

Step 2: Register & Create an Account for the MB400

1. Click ‘Register’.
2. Enter your email address.
3. Click ‘Send Code’ to receive a verification code via email.
4. Enter a new password ‘twice’ and click ‘Next’.

Step 3: Verify Your Email

1. Check your inbox for a verification email.
2. Click the verification link to activate your account.
3. If not received, check spam/junk folders.
4. Select Country and choose ‘User Name’

Step 6: Connect the MB400 

1. Allow Cloudhawk to find, connect to and determine the relative position of nearby devices – Click ‘Allow’.

2. Location Permissions Needed – Click ‘OK’.
3. Confirm successful connection status.

Step 8: Add the MB400 robot lawnmower

1. Click + to add MB400.
2. Select Bluetooth if you have a Bluetooth Phone.
3. Enter ‘Serial Number’ (found on the sticker on rear of device above the QR code or in the app Click on QR code icon to scan).
4. Allow the app permission to use your camera
5. Ensure both Bluetooth & Location services are enabled. Click ‘continue’
6. Turn on the mower using the key on the rear of machine and Click ‘Search’.
7. Once paired you will get a confirmation message.
8. Your mower will appear under ‘My Devices’ tab.
9. Green indicator shows the robotic mower is online and ready to access.
10. Click on the image to manger the robotic mower.

Step 9: Operating the MB400

• ‘Connected’ will be displayed top right of screen.
• Click on ‘Modify Schedule’.
• Click + to add a cutting time range
• Schedule a start time on the relevant day.
• Schedule an end time on the relevant day. (You are able to schedule up to two sessions per day)
• Repeat until you have completed the entire week.
• Save Schedule
• Click ‘back arrow’ to return to home screen.
• Use the function keys at the bottom of the app for direct control instant to start and stop mowing.