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NOTICE
Use only clean, dry fuel of the type and grade
recom mend ed by the engine manu factur er. The
use of incorrect or contaminated fuel can cause
engine malfunction and serious damage. En-
gine damage resulting from the use of incorrect
fuel is consid ered misuse of the engine and will
void the engine warranty. Refer to the section
on Fuel Requirements in the engine manual for
information on fuel specifi cations.
The V series models equipped with twin fuel tanks
come with a manual fuel valve system. See Figure
I13. This fuel valve system allows you to manually
select which fuel tank you want your engines to draw
fuel from. The diesel generator (if applicable) uses a
separate fuel pick-up (not shown). Please see Figure
I21 at the end of this section for fuel valve operations.
A. System Testing
All fuel systems have been factory in spected and
pressure tested in accordance with regulations
in effect at the time of manufacture. Additionally,
each fuel tank must pass rigid tests and inspections
performed by the fuel tank manu facturer.
Prior to taking delivery, it is important that a full in-
spection be made of the entire fuel system by
the selling dealer. An entry on the Four Winns
Pre- Delivery Inspection Form portion of the Warranty
Registration Card will attest to the deal er's perfor-
mance of this service.
B. Fuel Fills
The fuel fill deck plates are located on the port and
starboard at the transom and are marked "DIESEL".
See Figure I14. Be sure to utilize the proper type and
grade of fuel as recommended by the engine manu-
facturer. To open, insert the deck plate key into the
holes on the cap and rotate counterclockwise. A bead
chain connects the cap to body to help prevent loss
overboard. Refer to Section I-4 for infor mation regard-
ing fueling instructions.
Fuel Systems - Section I
Figure I14: Starboard Fuel Fill Location
(Port & Stbd Typical)
DO NOT confuse FUEL deck fill plate with WA-
TER or WASTE deck plates. Deck fill plates are
labeled according to the intend ed use.
The gasket/O-ring seals on the fuel fill cap assist in
sealing when closed. A missing or damaged O-ring
can allow water on the surrounding surfaces to run
into the tank.
Periodically inspect the cap and the fuel deck plate.
The O-ring seal should be inspected for cracks or
damage and replaced as necessary. Lubricating with
a light, waterproof oil or grease is recommended and
can extend the O-ring's longevity.
C. Fuel Vents
Separate thru-hull fuel vents are installed. See Figure
I15. While the tank is being filled, the air displaced by
the fuel es capes through the vent overboard.
Figure I15: Port Fuel Vent Location
(Port & Stbd Typical)
Owner's Manual Page 113
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