Can anyone ever experience a broken crankshaft on is outboard. Took the powerhead apart to find the crankshaft in 2 pieces and the crankcase destroyed. Pistons are find and cylinder also. A rebuild powerhead is over 3000$.
That is a very very rare occurrence.
Did your dealer give you any indication of what may have caused it? Were the flywheel nuts or studs loose or the motor run with a damaged prop?
The photo is not clear, what did the upper and center main bearings and the rod bearings look like?
"There is never just one thing wrong with a boat";
-- Travis McGee, main character in a book series by John D. McDonald
The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. Should you elect to perform repairs yourself, use caution, common sense, and observe safety procedures in the vicinity of flammable liquids, around moving parts, near high-temperature components, and working with electrical or ignition systems.
The information offered here is only general in nature and should not be construed as complete factory approved procedures, techniques, or specifications. Always use the proper service manual for your motor, up-to-date service literature, the correct tools, and have an understanding of how to proceed with troubleshooting and repair methods. If you are unsure or uncomfortable with a procedure, a situation, or a technique, enlist the services of a factory trained technician.