Specifications

Chapter 3 – Boat Systems
Section E. Propulsion Fuel System
CAUTION !
Introduction
On the RB-HS, the propulsion fuel system provides 118 gallons (95%) of
burnable gasoline for operating the two outboard engines.
On the RB-S, the propulsion fuel system provides 100 gallons (95%) of
burnable gasoline for operating two outboard engines.
E.1. Fuel Tank
The fuel tank (Figure 3-30) is constructed of ¼-inch welded 5086 marine
grade aluminum. Transverse baffles restrict free surface movement of the
fuel. The bottom is rolled (no seams) with doublers on either end, welded to
flanges that are mounted on shock absorbent rubber isolation pads. Doubler
plates isolate the tank from mounting brackets. Rubber mounts isolate the
tank from the hull.
Figure 3-30
Fuel System (RB-HS)
E.2. Fuel Tank
Vent (RB-HS)
The fuel tank vent line is accessed through a removable deck plate located in
the center of the aft well deck, aft of frame 7 on hulls 255001 through
255086. The last thirteen RB-HS boats have the same fuel tank vent system
as that for the RB-S (see E.3).
A separate diesel fuel system is installed for the cabin heater. Great care must be taken to
ensure that the correct fuel is provided to each system during re-fueling operations, or
serious engine or heater damage may result.
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