A rotary sprinkler including a body member (A) having a water inlet nozzle (4) with a top end and a bottom end, a pressurized water connector (8) communicating with the bottom end of the water inlet nozzle, a ring (14) attached in spaced-apart relationship from the top end of the nozzle, and a rotor member (B) having at one end an opening (30) for receiving water from the inlet nozzle and directing it to a water distributing groove, and at its opposite end, an axle (36). The rotary sprinkler also includes a rotor axle seat member (c) engageable and disengageable with the rotor's axle and with the ring facilitating, upon disengagement of the seat member from the ring, axial retrieval of the rotor member through the ring.