Kärcher ARMADA BRC 40/22 C Manual page 26

Lift the rubber seal off of the deck pivot and work it up the wire harness to expose the snap ring. On machines
built with the waterproof harness this seal is not present.
Using a pair of snap-ring pliers, remove the snap-ring
separating the pivot from the mount.
There is a ball bearing in the trough of the pivot, it is
the steering stop, remove it and place it where it won't
get lost.
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