Abstract: A lawn sprinkler which may be easily disassembled for replacement of the sprinkler assembly or parts thereof to accommodate changes in surrounding soil or grass level. The lawn sprinkler includes a sprinkler body having its upper end opened and an inlet at its bottom end for receiving water into the sprinkler body from an underground supply of water under pressure. A suitable closure member is removably connected to the upper end of the sprinkler body and includes a central passageway. A sprinkler assembly is mounted for movement relative to the sprinkler body between a retracted position and an extended position and includes a longitudinally extending pipe for the passage of water under pressure therethrough. The sprinkler assembly may be easily removed from the sprinkler body for replacement of parts by simply removing the closure member from the upper end of the sprinkler body.