Robot mower is very noisy while cutting, with rattling or grinding sounds from underneath.

Safety first: Turn OFF the mower, remove the key, and wear gloves.

• Inspect blades and screws: Turn the mower over and check that all blades are securely fastened and not broken. Tighten or replace as needed.
• Remove debris: Clear any stones, branches, or packed grass from around the cutting disc and deck.
• Check for contact: Rotate the disc by hand and listen for scraping against the housing. If present, inspect for a bent disc or warped deck.
• Assess motor bearings: If a grinding noise persists with the disc removed, the blade motor bearings may be worn and the motor should be replaced.

Do not operate the mower with abnormal noises; this can lead to further damage.