Re: Johnson 2R72M

[Don]

OK, well the gear isn’t fixed to the prop shaft so the electric motor must somehow be able to spin the prop shaft without having to move the gears/powerhead. That small gage wire doesn’t seem large enough to run the electric motor though.
The prop shaft must be able to pull out of that housing somehow to expose that pin.
Very unique unit indeed, hard to say if it is some sort of engineering "one off", or perhaps an outside vendor add on. Would have been an expensive kit though that would have included a new gearcase housing.
The electric motor section seemed dry, or perhaps you cleaned it up, you will need to inspect/replace the gearcase.
I wonder where the gearcase fill/drain screw is, the electric motor blocks the usual location.
A unique engine indeed, put it away and preserve it once repaired.