You can not safely run or store the Honda in your engine space. Do it and you will be blowing up!
The Honda is vented and does not have a wet exhaust system. The best place to run it os on the swimplatform. It will run the A/C fine. I've also run it on the foredeck. I stored it in the cockpit while underway to our destination. When docked, it was set on the dock a good distance from the boat or other boats do CO was not a threat to anyone.
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Jvalich
http://www.badcock.com'04 FW 288 Vista "Mental Floss"