FUEL
SYSTEM
FUEL
ADDITIVES
If
fungus
or
bacteria
is
causing
fuel
problems,
you
should
have
an
authorized
dealer correct
these
problems.
Then
use
a diesel
fuel
biocide
to
sterilize
the
fuel
(follow
the
manufac-
turer's instructions).
SPARES
While
the
likelihood of having to service
the
fuel
system
at
sea
is
SUnil
the
possibility
does
exist.
Therefore,
we
recom-
mend
that
banjo
washers, injector seat washers,
and
a
fuel
fil-
ter
he
carried
on
board at all times. Purchase
needed
spares
from
your
local
UNNERSAL dealer or distributor.
If
a leak
should
develop at a banjo washer that cannot
be
corrected
by
a simple tightening of the fitting, replace
the
sealing
washer.
FUEL
LIFT
PUMP
The
on-engine
fuel
system
is
virtually self priming. Under
ordinary
circumstances the engine's electric
fuel
lift
pump,
which
is
energized
by
the
key
switch/preheat bulton,
will
"
supply
a continuous
flow
of
fuel
from
the tank. This
fuel
is
drawn
through
the
fueVwater
separator
to
the
engine lift
'pump,
the primary spin-on
fuel
fIlter,
and
the injection
pump.
A
WARNING:
0"
not
allow
smoking
or
open
flames
II/IaI
filii
tuBI
system
when
stmllclng.
Also
provide
proper
wmtIlatlon.
FUEL
SYSTEM
BLEEDING
.
If
it becomes necessary
to
bleed
air
from
the
on
engine
fuel
system,
tum
the
panel
key
ON
and
intennitently
5-
10
sec-
onds.
Activate
the
pre-hear
vircui!.
This activates
the
fuel
pump
which
draws
fuel
into
the
on
engine
fuel
system
and
drives
air out via
the
fuel
return.
If
high
pressure injector
lines
need
to
be
bled, loosen
the
injector line
nut
at
each
injector,
open
the
throttle
and
crank
the
engine over until
fuel
sports from between
the
nut
and
line.
the secure
the
nuts
and
start
the
engine
as
normal.
NOTE:
Do
'not
attempt
this
procedure on a hot
engine.
A
WARNING:
Always
wear
p!otectlvB
clothing,
samty
glasses
and
gloves
when
blBBdlng
high
pressure
injector/lnes.
TO
FUEL
19
FUEL
RETURN
LINE
SHUT-OFF
VALVE
IM-SOBl
A shut-off
valve
is
located
on
the
fuel
retum line
near
the
injection
pump.
This valve must be fully open.
FUEl
SHUT-OFF
VALVE
Air
Cleaner/Silencer
SomeUNNERSAL engines use a replaceable air
filter
ele-
ment
Wrapped
around a metal
canister.
1bis element
can
he
removed'
and
brushed
off
or
cleaned
with
an
air
hose.
When
it become
too
contaminated it can
he
replaced. The canister
with
its
interiQr
element should
also
be
removed
and
cleaned
periodically.
Simply
wash
the
assembled
unit
in
a
non-flam-
mable
cleaning
solvent.
Use
this
same
cleaning procedure
for
other
UNIVERSAL
air cleaners that
use
a similar
type
canis-
ter.
NOTE:
To
operate efficiently a diesel
engine
must
intake
a
continuous
volume
of
clear
air.
Hard
starting,
an
erratic
idle,
and black exhaust smoke
are
all symptoms
of
a restricted air
intake.
AIR
CLEANER/SILENCER
IM-35B
SHOWN)
ELEMENT
AIR
CLEANER/SILENCER
IM-50B
SHOWN]
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