Question about Kärcher FC5 2.0

I would not recommend it. The device is designed for reasonably smooth floors (parquet, ceramic). On rough surfaces, the resistance becomes too great and the slip clutch breaks through - with the result that the clutch is subsequently worn and breaks through much too quickly. I ruined my FC5 in exactly the same way ;-)

yes, this is possible - it is advisable to buy a spare set of rollers....