Robot mower vibrates excessively, shaking the chassis and leaving an uneven cut.

Safety first: Turn OFF the mower and disconnect power. Wear gloves when working near blades.

• Check blade symmetry: Ensure all blade positions on the disc are filled with identical Cedrus blades and screws. Replace any missing or different blades.
• Clean disc: Remove caked grass or mud from the underside of the disc to restore balance.
• Inspect disc for bending: Spin the disc by hand and watch for wobble. A bent disc should be replaced.
• Verify motor mounting: Check that the blade motor is firmly bolted to the deck and that no mounting rubber bushings are missing or damaged.
• Test run: After reassembly, run the mower briefly on a flat surface and observe vibration. Persistent strong vibration indicates the need for a new disc or motor.