I recently acquired a Yanmar 4JH3-TE with 5000 hours on it. It was used for water taxi and looks like it is in a great shape but 5000 hours is a lot of time and I would like to rebuilt it. I was hoping that someone might have either experience or knowledge about this engine as far what needs to be rebuilt? Anything particular about this engine that goes bad? Seals, rings,pumps etc.?