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There is no repair article.

The tank (and pickup) are referred to as a single part by Boston Whaler when discussing diagrams.

Go to www.bostonwhaler.com select OWNERS, RESOURCES and Diagrams, Enter year and model, Select from list.

Here is the fuel system for a 2008 190 Outrage:
http://www.bostonwhaler.com/boat_grap...2726PM.pdf

I would either pull the inspection plate or floor, check the anti-syphon at the end of the hose/draw. If still a problem, unfasten the fuel withdrawal assembly and replace with a new unit.