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Just acquired this boat and the previous owner has deck tanks all over the place. I want to use the below deck tanks. Since the console does not sit on top of the deck I assume it will be relatively easy to "lift" the deck and examine the tanks for condition/replacement. I have some skills but am not a mechanic. Is this something I should leave to the pros? Does anyone have some hints?
Given the boat is now 30 years old and the previous owner was using on-deck fuel tanks, I suspect the original tank is kaput.
I suggest you order a new tank for FMT and replace the original one. I do not think this is a small job but one you can probably do yourself if you are well organized ahead of time.
Do some research. I vaguely remember there being some discussion of the newer replacement tanks made by FMT having the fuel fill necks taller than the originals and there being a clearance problem with the fuel tank cover (floor).