Regal 3300 Owner's Manual page 116

CHAPTER 4
Fuel Tank
Select overseas vessels use a polyester tank. Boats manufactured for
domestic use are now required to be EPA compliant and will be outfitted with an
aluminum tank. This system uses parts such as a valve located inside
the fuel tank and cannot be serviced. Also, there is a carbon canister
that functions much like the one in an automobile located between the
fuel tank and hullside vent. This canister under normal usage requires
no service. These tanks are tested along with the complete fuel system
for safety requirements and quality in house. Also, they are inspected
independently by National Marine Manufacturers Association for
conformance with American Boat and Yacht Council standards.
TYPICAL EPA COMPLIANT FUEL TANK
VENT
HOSE
FILL HOSE
4-4
ANTI-SIPHON
VALVE
FEED HOSE
https://www.boat-manuals.com/
FUEL TANK LABEL