How and when to change the cutting blades on your Automower® robotic lawn mower

When the cutting blades on your Automower® robotic lawn mower become worn, or when the tip of the grass blades begin to whiten and look frayed when cutting, it is time to change them to maintain performance.

Make sure that you always use original blades and screws from Husqvarna, and always replace the screw at the same time as the blade when carrying out maintenance, otherwise the screw can become worn out and cause the blade to come loose when operating.

Note that in the spring, the grass grows fast and contains a lot of sap that can build up on the blades. It is recommended to check and, if necessary, change the blades more often during this period.

Step-by-step guide to changing blades

  1. Make sure that the main switch is turned off.
  2. Put on protective gloves.
  3. Turn the robotic lawn mower upside down.
  4. Rotate the skid plate so that its hole aligns with the screw for the blade.
  5. Unscrew the blade. Use a straight slot or cross-tip screwdriver, preferably magnetic for easier removal of the screw.
  6. Pry apart the skid plate and blade disc a little and remove the blade and screw.
  7. Clean out any dirt using a dish-washing brush and a soft damp cloth.
  8. Screw the new blade tight with a new screw. Always replace the screw at the same time as the blade. Be careful to only use one blade with each screw: otherwise, the cutting system may become imbalanced.
  9. Check that the blades spin freely.

What is the lifetime of Automower® cutting blades?

The normal lifetime of Automower® cutting blades is 3 to 6 weeks when used under favourable conditions, but the lifetime of the blades varies and depends for instance on:

  • Blade model. For example, Husqvarna Automower® Endurance blades provide three times the lifetime compared to classic Automower® Blades, and Husqvarna Endurance HSS Blades even longer.
  • Operating time and size of the work area.
  • Type of grass and seasonal growth.
  • Soil, sand and use of fertilisers.
  • The presence of objects such as cones, windfalls, toys, tools, stones, roots, etc.

What happens if I do not change the blades on my Automower® robotic lawn mower?

Working with blunt blades gives a poorer mowing result. The grass is not cut cleanly and more energy is needed, resulting in the robotic lawn mower not mowing the expected area size.

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