Mainship 40 Trawler Single - Fuel Filters, Additives, and LPG System

Fi
g
ure 5.
3
E
xample o
f
Fuel
S
uppl
y
Lines and Valves
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 en
g
ines or the
g
enerator
(
if so
e
quipped
)
ma
y
contact impurities
f
ound in the
f
uel tanks
o
r in the fuel from
y
our supplier. If these impurities are
not remove
d
pr
i
or to start
i
n
g
t
h
e en
gi
ne or
g
enerator, per-
f
ormance ma
y
be seriousl
y
a
ff
ected. Removal o
f
the
f
uel
impurities is accomplished b
y
external fuel filters.
5.4.1 Main En
g
ine Filter
s
The en
g
ine has a separate filter located awa
y
from the
e
n
g
ine.
C
heck the Fuel Arran
g
ement illustration at the
e
nd of this chapter for the exact location of this filter.
An authorized service technician should replace all
f
ilters
annuall
y
prior to sprin
g
launch. The
y
ma
y
need more
frequent replacement if
y
ou notice poor en
g
ine/
g
enerator
per
f
ormance due to contaminated
f
uel.
Fi
g
ure 5.4 shows an illustration for the Racor Fuel Water
separator
(
commonl
y
re
f
erred to as the
f
uel
f
ilter
)
. This
will break down the components of the filter and their
uses
within th
e
filt
e
r.
5.4.2 Generator Fuel Filter
C
heck
y
our
f
uel s
y
stem arran
g
ement at the end o
f
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
:
M
ake sure the en
g
ine is o
ff
.
C
lose shut-off valve between fuel tank and filter i
f
applicable.
O
pen vent plu
g
on mountin
g
head with a ½” wrench.
Note: Do not leave drain open for very long as it will
empty filter of all fuel.
When
f
uel is detected comin
g
out o
f
drain, close drain
qu
i
c
kly
.
C
lose vent plu
g
and ti
g
hten snu
g
l
y
.
O
pen shut o
ff
valve
.
F
o
ll
ow pr
i
m
i
n
g
i
nstruct
i
ons.
C
onsult
y
our owner’s packet
f
or more in
f
ormation con-
c
ernin
g
this filter or for replacement parts
.
5.4.3 Fuel Additive
s
R
e
f
er to
y
our En
g
ine Manual
f
or recommendations. Re
f
e
r
to the
“
Winterization and
S
tora
g
e” section o
f
y
our owner’s
manual for information concernin
g
the use of fuel stabiliz-
e
rs. Alwa
y
s
f
ollow the manu
f
acturer’s recommendations
when usin
g
f
uel additives or stabilizers.
Here are some
g
eneral
g
uidelines for fuelin
g
y
ou
r
boat
:
CAUTION
! !
U
sin
g
the wron
g
t
y
pe of fuel will result in severe
dama
g
e to the en
g
ines. Refer to
y
our owner’s
m
anual for fuel recommendations
.
WARNING
! !
Fuel leakin
g
from an
y
part of the fuel s
y
stem can
lead to fire and ex
p
losion that can cause serious
b
odil
y
in
j
ur
y
or death. Inspect s
y
stem before
f
uelin
g.
1.
2.
3.
4
.
5.
6.
7.
OP
E
N
OP
E
N
S
H
UT
S
H
UT
OPEN
SHUT
OPEN
SHUT
Open Shut
Fuel Valve Illustration
A quick view
of the
difference in an open
and shut
fuel valve
M
ainship 40 Trawler Sin
g
le & Twin • Fuel S
y
stem
5
.
5