Hunter 50 - Fuel Supply Lines and Hoses

WARNING
! !
Fuel leakin
g
from an
y
part of the fuel s
y
stem can
l
ead to fire and ex
p
losion that can cause serious
bodil
y
in
j
ur
y
or death. Inspect s
y
stem before
f
uelin
g.
CAUTION
! !
U
sin
g
the wron
g
t
y
pe of fuel will result in severe
d
ama
g
e to the en
g
ines. Refer to
y
our owner’s
m
anual for fuel recommendations
.
DA NG ER
! !
L
eakin
g
fuel is a fire and explosion hazard.
P
ersonal in
j
ur
y
or death could occur
.
5.1.3 Fuel Tank Fill & Ven
t
The fuel tank fill fittin
g
is located on the stbd. side on the
stern. The
f
uel tank also has a hull vent
f
ittin
g
. This
f
ittin
g
is also located on the port side near the
f
uel
f
ill. You can
see the fill in detail in Fi
g
. 5.2, on pa
g
e 5.3.
The
f
uel tank vent serves as a pressure
/
vacuum release
and a safet
y
overflow. The vent is a thru hull fittin
g
with a
f
lame arrestor, so it is imperative that
y
ou keep
the screens clear and in excellent repair. Replace the
screen immediatel
y
if it becomes dama
g
ed or displaced.
P
eriodicall
y
check the vent to see that it is not clo
gg
ed.
The fuel fill and fuel vent hoses, fittin
g
s, and connec-
tions should be inspected for leaks and si
g
ns of dr
y
rot
o
r swellin
g
at least once a
y
ear. I
f
an
y
o
f
these condi-
tions are present, have an authorized service technician
inspect the fuel s
y
stem immediatel
y
. If a leak is found,
turn o
ff
batter
y
switches, disconnect shore power, and
disable an
y
possible source of i
g
nition. Contact
y
our
dealer or Customer Service immediatel
y
.
DA NG ER
! !
T
he use of an
y
hose other than the USCG T
y
pe A1
o
r A2 could result in fuel leaka
g
e. Leakin
g
fuel is a
f
ire and explosion hazard. Personal in
j
ur
y
or death
c
ould result
.
5.2 Fuel Suppl
y
Lines and Hoses
If an
y
fuel fill or vent hose's are in need of replacement,
e
nsure that onl
y
U
SCG
T
y
pe A1 or A2 are used. The
e
n
g
ine has a fuel suppl
y
hose that runs from the pickup
tube in the fuel tank to the fuel water separator
(
com-
monl
y
re
f
erred to as the
f
uel
f
ilter
)
, then
f
rom the
f
ilter to
the en
g
ine. Also, the en
g
ine has a fuel return hose that
runs from the en
g
ine back to the fuel tank. If
y
our boat
has a
g
enerator, the
g
enerator will have somewhat the
same setup, with the suppl
y
and return hose. The fuel
suppl
y
lines or hoses, fittin
g
, and connections should be
inspected o
f
ten
f
or leaks and si
g
ns o
f
wear, dr
y
rot, cha
f
-
in
g
, or swellin
g
. A
g
ood wa
y
to inspect the fuel hoses is
to run
y
our hand alon
g
the len
g
th of the hose includin
g
the
f
ittin
g
s. Leaks will be revealed as wet spots on
y
our
hand. If an
y
evidence of hose deterioration is present,
have a
q
ualified technician re
p
lace all the hoses with
USCG
T
y
pe A1 hoses immediatel
y!
In Fi
g
.5.3
y
ou can see the
f
uel suppl
y
f
ittin
g
s. The photo
inset shows the close-up o
f
the
f
uel valve.
S
ee Fi
g
.5.5
f
o
r th
e
f
u
n
c
ti
o
n
o
f th
e
f
ue
l v
a
lv
es
.
Note: If a leak is found, turn off battery switches, disconnect
shore power, and disable any source of ignition. Do not start
your engines, the generator, or any devices that could cre-
ate a spark. Contact your dealer or our Customer Service
Department immediately! If hoses need to be replaced, make
sure only USCG Type A1 are used.
5.2.1 Generator Fuel Suppl
y
Notic
e
In Fi
g
. 5.4 we demonstrate the la
y
out o
f
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
Safet
y
chapter o
f
this manual
f
or more location in
f
ormation. In the ima
g
e
y
ou can see the pick up
f
or the
g
enerator is located
high
er t
h
an t
h
e en
gi
ne p
i
c
k
up
This is a sa
f
et
y
f
eature o
f
y
our boat, to ensure that the
Hu
nt
e
r
50
• Fuel S
y
stems
5
.4