Help reading dealer printout

[outback32]

I have a 2011 150 opti 2stroke dfi. I had the mechanic hook it up. It says port head overheat 136 degrees. It only did it one time at 1600 rpm. The dealer took it out and couldn't get it to do it again. He recommended pulling thermostats and cleaning them out. I will post pics of the readout. Just trying to decipher all the numbers and what's important

 

[outback32]

Here's pics

 

[outback32]

It won't let me post pics for some reason.

 

[outback32]

From my research 136 isn't over heating. I took the boat out last night and no issues at all.