One interesting note with fuel (especially with external gas tanks). I learned this on a trip to Alaska and then did some research. Boat companies (and fuel can companies) recommend a filter be installed on longer fuel lines. This is a seperate filter that is inside your motor.

If memory serves me right, it is a 30micron filter. I cannot remember the length of hose as recomending a filter for, but it might be a good idea to do it anyway.