Hunter H45DS - Fuel Filters and Valves

In Fi
g
. 5.4 we demonstrate the la
y
out of
y
our boat's
f
uel pick up lines in the
f
uel tank.
S
ee the Mechanical
Arran
g
ement Drawin
g
in the Boatin
g
S
a
f
et
y
chapter o
f
this manual for more location information. In the ima
g
e
y
ou can see the pick up
f
or the
g
enerator is located
hi
g
her than the en
g
ine pickup
This is a sa
f
et
y
f
eature o
f
y
our boat, to ensure that the
g
enerator never depletes the
f
uel to the en
g
ines
.
Generator
Pick-up
gg
5.3 Fuel Valves
Y
ou
r
boa
t h
as
f
ue
l
s
h
u
t
o
ff v
a
lv
es
l
oca
t
ed
a
t th
e
t
a
nk in th
e
suppl
y
line route. These valves are used to start or stop
the flow of fuel throu
g
h the suppl
y
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 suppl
y
valves are the “ball t
y
pe” valves. Turnin
g
t
h
e
h
an
dl
e so
i
t
i
s perpen
di
cu
l
ar to t
h
e va
l
ve
b
o
dy
s
h
uts
off
the suppl
y
or return. Turnin
g
the handle so it is in line
with the valve bod
y
opens the valve, as shown in Fi
g
.
5
.5.
E
xample of Fuel Suppl
y
Lines and Valves
OP
E
N
OP
EN
SHU
T
SHUT
OPEN
SHUT
OPEN
SHUT
Open Shut
Fuel Valve Illustration
A quick view of the
difference in an open
and shut fuel valve
y
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
f
uel supplied to the en
g
ines or the
g
enerator
(
i
f
so
e
quipped
)
ma
y
contact impurities found in the fuel tanks
o
r in the fuel from
y
our supplier. If these impurities are
not removed prior to startin
g
the en
g
ine or
g
enerator, per-
formance ma
y
be seriousl
y
affected. Removal of the fuel
impurities is accomplished b
y
external fuel filters.
5.4.1 Main En
g
ine Filter
s
E
ach en
g
ine has a separate
f
ilter located awa
y
f
rom the
e
n
g
ine. Check the Fuel Arran
g
ement illustration at the
e
nd of this cha
p
ter for the exact location of these filters.
An authorized service technician should replace all filters
annua
lly
pr
i
or to spr
i
n
g
l
aunc
h
.
Th
e
y
ma
y
nee
d
more
f
requent replacement i
f
y
ou notice poor en
g
ine
/g
enerato
r
per
f
ormance due to contaminated
f
uel.
O
n the
f
ollowin
g
pa
g
e, Fi
g
. 5.7, p
g
. 5.7,
y
ou will
f
ind an
illustration
f
or the Racor Fuel Water separator
(
commonl
y
referred to as the fuel filter
)
. This will break down the
c
omponents o
f
the
f
ilter and their uses within the
f
ilter.
5.4.2 Generator Fuel Filter
C
heck
y
our fuel s
y
stem arran
g
ement at the end of this
c
hapter
f
or the location o
f
the
G
enerator Filter
(
ta
gg
ed
)
.
This is a fuel – water separator t
y
pe filter.
T
o
se
rvi
ce
th
e
f
ilt
e
r
:
Fig
. 5.
5
Fi
g
.5.
4
E
n
g
ine pick-up
M
a
i
n en
gi
ne
a
nd
g
enerator
(
option
)
fuel
f
ilter locate
i
n en
g
ine
c
om
p
artmen
t
Generator fuel filter
F
i
g
.
5
.
6
Engine fuel filter
Hunter 45
DS
• Fuel S
y
stems
5.5