![](/images/new-backgrounds/1178023/17802321x1.webp)
English 11
4 Turn the lock anticlockwise (1) and remove the retaining frame (2).
5Remove and clean one shaving head at a time. Each shaving head consists of a cutter and a guard.
Note: Do not clean more than one cutter and guard at a time, since they are all matching sets. If you accidentally mix up the cutters and guards, it may take several weeks before optimal shaving performance is restored.
6 Put the shaving heads back into the shaving unit.
AT940/AT893/AT891/AT890: Make sure that the projections of the shaving heads fit exactly into the recesses.
7 Put the retaining frame back into the shaving unit and turn the lock clockwise.