Roborock H6 CE - Manual (Page 25)

Cleaning the Motorized Mini-Brush Cleaning the Carpet Brush
Maintenance
5. When the roller is thoroughly dry, reinstall it.
6. Hold the brush, so the locking mechanism faces you.
Place the roller in position then use a coin to turn the lock
counterclockwise to lock it in place.
Roller Lock
1. Hold the brush so that the locking mechanism faces you.
Use a coin to turn the lock counterclockwise and remove
the mechanism.
2. After removing the locking mechanism, remove the
roller.
Roller Lock
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