Portable trimmer having rotatable power head

A hand-operated power tool, comprising:

• a power head having a housing enclosing an electric motor and at least partially enclosing a cutting tool operatively coupled to the electric motor;
• a head support connected to the power head and settable in a plurality of angular positions with respect to said power head, said head support having a head coupling including a head electrical connection unit electrically connected to the electric motor;
• an elongated boom terminating at a distal end with a handle coupling for releasable engagement with the head coupling, the handle coupling having an electrical receptacle for electrically connecting to the head electrical connection unit during the engagement;
• and
• a control handle assembly connected to a proximal end of said elongated boom and having a manual switch to control communication of electric power from an electrical power unit to a handle electrical connection unit during the engagement, whereby engagement of the manual switch controls mechanical operation of the cutting tool:
• a stator cartridge disposed within and connected to the housing of said power head by a plurality of fastening members, said stator cartridge defining a plurality of recesses that are adapted to receive a movable engagement pin from said head support, wherein said power head is locked into a predetermined angular position with respect to said head support during engagement of the pin into a selected recess of the plurality of recesses;
• and
• a latch slidably mounted to an external surface of said head support and connected to the pin such that movement of said latch engages the pin with the selected recess,
• wherein the head support includes an interior chamber and the stator cartridge is rotatably secured within the interior chamber.