old blade disc bearing on motorized robotic lawnmower. dirty and rusty lawnmover blade ready to be replaced by a new one

bearing blade cleaning concept cup cutter debris detail dial dirt dirty dry equipment gardening grass gunk hands free holding imbus lawn lawnmower layer machine maintenance modern mower mud outside professional removing replacement robot robotic screw seal service shiny soil stripping stuck summer sweeping technology tool ugly wheel work worn old disc motorized rusty lawnmover ready replaced new one