Robot mower leaves clumps of grass and the underside is heavily packed with wet grass.

Safety first: Turn OFF the mower and remove it from the station. Wear gloves.

• Clean deck: Flip the mower and use a plastic scraper or brush to remove all packed grass from the deck and around the blade motor.
• Sharpen/replace blades: Install new sharp blades to produce finer clippings that disperse better.
• Adjust cutting height: Raise the cutting height, especially when the grass is long or wet.
• Schedule: Avoid mowing immediately after rain or watering. Let the lawn dry to reduce clumping.