Maxum 3100 SE Sport Cruiser Owner's Manual page 27

Freshwater Fill Deck Fitting (marked WATER):
Located on the port aft corner of the deck.
Fuel Tank: Located in the forward
area of the engine room.
Fuel Fill Deck Fitting (marked GAS or
DIESEL): Located on the starboard aft corner of
the deck.
FRESHWATER FILL
DECK FITTING
FUEL TANK
Chapter 2: Locations
FUEL FILL
DECK FITTING
21