Sprinkler with magnetic nutating mechanism and related method

A sprinkler head comprising:

• a body assembly including an adapter, a nozzle, a spindle and a first magnet, said nozzle located within said spindle, said spindle supporting a spool slidably received over said spindle and having a pair of axially-spaced radially-oriented spool flanges, wherein said first magnet is located between a lower one of said spool flanges and a downstream end of said spindle;
• a nutating cage loosely mounted on said spindle, said nutating cage supporting a second magnet in close proximity to said first magnet;
• a water distribution plate carried by said nutating cage and adapted to be impinged upon by a stream emitted from the nozzle, and wherein said first and second magnets are arranged with like poles facing each other such that said second magnet is repulsed from said first magnet, but when said stream impinges on said water distribution plate, said second magnet is moved towards said first magnet, with magnetic repulsion force increasing and causing said nutating cage and said water distribution plate to tilt off axis.