2014 300hp 4.2L outboards. When should troubles start?

[cachnrlese]

I have twin 4.2L 300hp Yamaha's on my boat and could not be more pleased with them to this point. I have just over 300 hours on them and was curious how many reliable hours I might expect to get from them with proper care and maintenance.

 

[ClassicAQ]

If I'm reading you correctly, you're asking when to expect engine problems??? If someone gives you the answer to that question make sure you also get from him/her the next winning lottery numbers.

Not to knock you down, I can appreciate an operator who wants to stay on top of their engines maintenance and performance. Be that as it may, there is absolutely no way to determine when a well maintained engine will have issues. A poorly maintained engine...now that's a different story.