How do I know when it's time to change the blades on my robotic lawnmower?
If the mowed grass becomes yellow at the top or a bit jagged, it is a sign that it is time to change the blades on the lawnmower. How often this needs to happen depends, of course, on how often you use the lawnmower, but usually, the blades need to be replaced about 2–3 times per season.