A robotic work tool system (200) comprising a robotic work tool (100), said robotic work tool (100) comprising a housing (140) comprising a chassis (140B) adapted to carry at least one component (110, 120, 180, 170, 165, 160, 150), and a body (140A), wherein said body (140A) is adapted to be fitted with an exchangeable cover (310), which exchangeable cover (310) is arranged to be attached to said body (140A) through releasable attachment means (410, 415, 420,425, 430, 435).
