Guides, Manuals, Parts & Support

1) Preparation

Your mower comes fully assembled and ready for setup. carefully unpack the mower and accessories. The cutting blades are sharp, so wear protective gloves when handling the mower. Fully charge the supplied battery before first use.

2) Prepare Your Lawn

Before mowing, remove any stones, sticks, toys or other loose objects from the lawn. For the best performance, trim the grass to 60 mm or below before first use and keep the lawn clear of fallen leaves to ensure reliable grass detection.

3) Prepare Lawn Boundaries

OcuMow® uses vision technology instead of a boundary wire, so clear lawn edges are essential. Suitable lawn borders include paving, brick or stone edging, raised borders, or gravel with clearly defined edges. Areas steeper than 35% should be excluded. If your garden includes a pond or pool, protect it with a raised barrier over 20 cm high or a flat border at least 70 cm wide.

4) Install the Battery

Before installing the battery, ensure the isolator key is NOT inserted.

1.Open the battery compartment.

2.Slide the battery into the guide rails until it clicks into place.

3.Insert the isolator key.

4.Close the battery compartment cover.

Before operating the mower, ensure the battery pack and isolator key
are securely fitted.

5) Before Your First Mow

We recommend supervising the mower during its first mowing session to ensure it correctly recognises your lawn boundaries. If necessary, improve the lawn edges or add temporary physical barriers before regular operation.

Operation: Press and hold the START/ON button for 1 second to power on the mower. Select your preferred cutting mode (Automatic Parallel Mowing, Partial/Manual Parallel Mowing, or Random Mowing), then press START/ON again to begin mowing. The camera system takes approximately 15 seconds to initialise. The mower is ready to mow when the battery indicator is illuminated green continuously and the mower beeps.

Automatic Parallel Mowing: The mower first completes a full perimeter cut around the lawn boundary before mowing in an efficient parallel pattern automatically. This is the recommended mowing mode for most lawns and delivers the best overall mowing performance.

Partial/Manual Parallel Mowing: Ideal for completing areas missed during Automatic Parallel Mowing or for lawns with more complex shapes. Place the mower on the left-hand side of the lawn before starting. Once completed, the mower automatically switches to Automatic Parallel Mowing to finish the remaining area.

Random Mowing: The mower cuts the lawn in a random pattern and automatically changes direction whenever required. This mode is recommended for irregular lawns or where parallel mowing is not suitable.

Cutting Height: The cutting height can be adjusted from 20 mm to 60 mm. For the first few weeks, we recommend using a higher cutting height (around 40 mm) before gradually lowering it to the desired level. Always stop the mower before adjusting the cutting height.

Battery Charging: Use only the supplied LawnMaster® battery charger. Charge the battery indoors in a dry, well-ventilated area between 4°C and 40°C. The lithium-ion battery can be charged at any time without affecting its service life. Battery indicators: 3 LEDs = Fully charged, 2 LEDs = More than 40% charge, 1 LED = Recharge required.

Security Code: Protect your mower with an optional 4-digit Security Code to prevent unauthorised operation. The mower is supplied without a Security Code by default. Please refer to the User Manual for instructions on setting, changing or removing the Security Code.

Maintenance: Always switch the mower off, remove the Isolator Key and Battery Pack, and allow the mower to cool before carrying out any cleaning or maintenance. Always use genuine LawnMaster® replacement parts and wear protective gloves when replacing blades. Regularly remove grass clippings, leaves and debris, keep the camera, ultrasonic sensors and charging contacts clean, and inspect the blades for wear or damage. To maintain a balanced cutting system, always replace all three blades and screws together. Clean the mower using a soft brush or dry cloth only. Do not use running water, solvents or a high-pressure washer. Store the mower indoors in a clean, dry location, and keep the battery in a cool, dry place away from direct sunlight. For long-term storage, maintain the battery at approximately 30–50% charge and fully recharge it every six months.

Software Updates: The mower software can be updated using a USB flash drive whenever a new firmware version is available. Download the latest software from the LawnMaster Support website and follow the instructions in the User Manual to complete the update safely.

How to Operate LawnMaster OcuMow® AMB16-400 Autocharging Vision Robot Mowers:

For the best performance and latest features, keep your OcuMow® DM16-250 Advance robot mower firmware up to date.

We don’t have any firmware updates available right now. Please check back later.