I usually go to BoatTest.com for that info. But I couldn't find your specific boat. Attached is for a 5.7L 250hp Mercruiser on a 27' express cruiser. But so many differences like weight and style and tank size will affect test results so don't use th...
I had to replace every rocker switch as they all had a "sweet spot" in them - just too old. I have an 82 Sundancer 260 - so maybe similar issues. I actually paid a dealer to replace all the wiring as well as I just didn't want unreliability out on th...