Fuel Valves - Hunter H45DS Operator's Manual

In Fig. 5.4 we demonstrate the layout of your boat's
fuel pick up lines in the fuel tank. See the Mechanical
Arrangement Drawing in the Boating Safety chapter of
this manual for more location information. In the image
you can see the pick up for the generator is located
higher than the engine pickup
This is a safety feature of your boat, to ensure that the
g generator never depletes the fuel to the engines.
Generator
Pick-up

5.3 Fuel Valves

Your boat has fuel shutoff valves located at the tank in the
supply line route. These valves are used to start or stop
the flow of fuel through the supply lines.
Note: Even if the fuel supply valves are closed, there may be
fuel in the supply lines to the filters and engines (or generator).
Disconnecting these fittings without properly bleeding the sys-
tem of fuel could result in emptying the fuel filters and causing a
fuel spill. Only a qualified technician should ever make repairs
to your fuel system.
The fuel supply valves are the "ball type" valves. Turning
the handle so it is perpendicular to the valve body shuts
off the supply or return. Turning the handle so it is in line
with the valve body opens the valve, as shown in Fig.
5.5.
Example of Fuel Supply Lines and Valves y
Fuel Valve Illustration
A quick view of the
difference in an open
and shut fuel valve
Open Shut
Hunter 45DS • Fuel Systems
g
Engine pick-up
Fig. 5.5
OPEN
OPEN
SHUT SHUT
Note: This configuration may not reflect the configuration of
what your fuel valves are. This can be found in the Fuel System
Arrangement at the end of this chapter.
5.4 Filters (Fuel Water Separators)
The fuel supplied to the engines or the generator (if so
equipped) may contact impurities found in the fuel tanks
or in the fuel from your supplier. If these impurities are
not removed prior to starting the engine or generator, per-
formance may be seriously affected. Removal of the fuel
impurities is accomplished by external fuel filters.
5.4.1 Main Engine Filters
Each engine has a separate filter located away from the
engine. Check the Fuel Arrangement illustration at the
end of this chapter for the exact location of these filters.
Fig.5.4
An authorized service technician should replace all filters
annually prior to spring launch. They may need more
frequent replacement if you notice poor engine/generator
performance due to contaminated fuel.
On the following page, Fig. 5.7, pg. 5.7, you will find an
illustration for the Racor Fuel Water separator (commonly
referred to as the fuel filter). This will break down the
components of the filter and their uses within the filter.
Engine fuel filter
Generator fuel filter
5.4.2 Generator Fuel Filter
Check your fuel system arrangement at the end of this
chapter for the location of the Generator Filter (tagged).
This is a fuel – water separator type filter.
To service the filter:
5.5
Main engine
and generator
(option) fuel
filter locate
in engine
compartment