Black Box 583476 0586667

Function and Technical Context

The black box is the electronic control module of the ignition system in OMC outboard motors, responsible for managing the electrical impulses that determine the exact ignition timing in each cylinder. Integrated into the ignition circuit together with the coil, stator and position sensors, this unit processes the magnetic signals generated by the flywheel to calculate ignition advance according to engine operating conditions. Its correct condition is essential to ensure efficient combustion: a failure in this module causes difficult starting, severe power loss, rough running at high RPM or even complete engine shutdown. This part replaces OMC references 583476, 0586667, 0763800, 584036, 584037, 586217, 586667 and 763800, being compatible with a wide range of high-displacement Johnson and Evinrude outboard motors.

When to Replace This Part?

The most common symptoms of a faulty ignition module include intermittent or missing spark failures, jerking and cutting out at full throttle, difficulty starting when hot and rough running that does not improve with carburetor adjustment or spark plug replacement. This type of electronic component has no fixed replacement interval in hours, but should be inspected at any sign of erratic ignition and reviewed at each seasonal maintenance, especially in motors operating in high-humidity environments or with intense vibrations. Replacing the module preventively at the first signs of trouble avoids being stranded at sea and protects the rest of the ignition system against voltage spikes caused by a degraded unit.

Compatible Johnson/Evinrude Outboard Motors

Equivalent Manufacturer References