Hunter H33 - Fuel Supply Lines and Hoses; Fuel Valves

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
i
s
a
l
so
l
oca
t
ed
o
n th
e
s
t
bd
.
s
i
de
n
ea
r th
e
fue
l
f
ill. Y
ou
ca
n
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
.5.4
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.
5.3 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
supp
ly
li
ne route.
Th
ese va
l
ves are use
d
to start or stop
the
f
low o
f
f
uel 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-
Hu
nt
e
r
33
• Fuel S
y
stems
5
.4