175Hp Sudden Shutdown (ref Curtispittman 1 day ago)

[Torman]

Boston Whaler powered by 2x175hp 1998.

The troublemaker runs fine for minutes or hours at a time, and then suddenly dies "just as if you turned off the ignition key, or pulled the safety kill switch cable".
Then if I "Beach" the engine and put it down again, it usually starts right off again.

Tried everything, but exchange the CPU's with each other.
Could this be worth trying, and if so, how big is this job?

Or could it be some other electrical problem?

Any ideas or expert tips would be appreciated.

Thanks from Norway!