1976 Seafari Fuel Tank Removal

[Vezo, Part II]

Thanks to member Terry Strout I have the drawings for a new 48 gallon aluminum fuel tank. Today I am removing a 1988 25 gal. Tempo aluminum tank and fighting the old foam. It will NOT win!!!

Once removed, I am going to move her into my garage/boathouse for protection. I have seriously cleaned and rinsed bilge of removed I/O but I want to clean it better before bringing inside. Can I start flushing, with boat on a serious slope, from Hawes Pipe of anchor locker, (extreme nose of bow), clear through to the drain plug at bottom of the transom? With diluted bleach?

TIA, Part II