Hunter 50 - Fuel Valves and Filters

g
enerator never depletes the fuel to the en
g
ines
.
Generator
Pick-up
gg
5.3 Fuel Valves
Y
ou
r
boa
t h
as
fue
l
s
h
u
t
off
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
the handle so it is perpendicular to the valve bod
y
shuts
off
the suppl
y
or return. Turnin
g
the handle so it is in line
w
i
t
h
t
h
e va
l
ve
b
o
dy
opens t
h
e va
l
ve, as s
h
own
i
n
Fig
.
5
.
5
.
E
xample of Fuel Suppl
y
Lines and Valves
Flow of fuel.
Open Closed
Rotating the handle 90° from the
fuel line, closes the valve.
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 for the location of the Generator Filter
(
ta
gg
ed
)
.
This is a
f
uel – water separator t
y
pe
f
ilter.
T
o
se
rvi
ce
th
e
filt
e
r
:
M
ake sure the en
g
ine is off.1
.
Fi
g
. 5.
5
5
Fi
g
.5.
4
4
E
n
g
ine pick-up
Main engine fuel filter
Generator fuel filter
Fig. 5.6
Hu
nt
e
r
50
• Fuel S
y
stems
5
.
5