Multi-mode rotor sprinkler apparatus and method

A multi-mode irrigation sprinkler, comprising:

• a nozzle for dispensing fluid;
• a set of gears for rotating the nozzle;
• and
• an arc setting mechanism that, cooperates with the set of gears, and switches between a part circle mode for the nozzle and a full circle mode for the nozzle,
• the arc setting mechanism comprising:
• a fixed tab for switching to a first direction for the nozzle;
• an adjustable tab movable relative to the fixed tab for setting an arc of rotation for the nozzle when in the part circle mode and for switching to a second direction for the nozzle;
• and
• a toggle for engaging the fixed tab and the adjustable tab to switch between the first direction and the second direction when in the part circle mode;
• the adjustable tab being moveable radially outwardly to set the full circle mode and such that the fixed tab is positioned to deflect the toggle radially inward to move past the toggle during an operational state of the full circle mode, allowing continuous rotation of the nozzle in one of the first direction and the second direction.