Update: I pulled the engine and was lucky to find that only the mounts were soft. Had a local repair shop replace them and reinstalled the motor. Put in new bellows, y pipe seal and water hose while it was out and the old boat is running again. Thanks for the input here!
Original owner of this boat, which has provided excellent service over the years. Though it has no hour meter, it is a low hours boat with a great running mercruiser 4.3. (I would estimate less than 400 hours) The engine coupling spun on it a week or two ago and after looking around I can see...
