Operator`s manual
Priming
the
Fuel System
The Westerbeke self-bleeding fuel system
is
semiautomatic in operation. The self-bleeding feature of the fuel
system allows for easy servicing
01
the fuel filters. Simply remove the and replace the filter elements (take
care in catching any fuel that may drain out
01
the fuel filtering assemblies) as described
In
the "Replacing
the
Fuel
Filter Elements" section below. Energize the PREHEAT switch and allow the electric fuel pump to
operate for
20
to
30
seconds to prime and bleed air from the system. (No fittings should be opened.) Then
proceed
to
start the engine as you normally would. If the engine does not start, stop and wait a few mo-
ments, and then repeat the bleed procedure as indicated above. When the PREHEAT
SWITch
is depressed,
the preheat elements (the glow plugs) are energized, so take care not
to
over heat them.
CAUTION
Prolonged
cranking
intervals
without
the
engine starting can result in
filling
the
engine-
mounted
exhaust
system
with
sea water coolant.
This
may
happen
because
the
sea
water
pump
is
pumping
sea water
through
the
sea water
cooling
system
during
crank-
ing.
This
sea water can enter
the
engine's cylinders
by
way
01
the
exhaust
manifold
once
the
exhaust
system
Iills. Prevent
this
irom
happening
by
closing
the
sea water
supply
through-hull
shut-off,
drain
the
exhaust muffler, and
correct
the
cause
for
the
excessive
engine
cranking
needed
to
obtain
II
slart.
Engine
damage
resulting
from
this
type
of
sea water
entry
is
nol
II
warrantable issue;
the
owner/operator
should
keep
this
in
mind.
Replacing
the
Fuel
Filler
Elements
While it
is
unlikely that the operator will be forced to service the system at
sea,
the possibility does exist.
Therefore, it
is
recommended that banjo washers, injector seat washers, electric lift pump filter and gasket,
fuel filter and gasket be carried on board at
all
times. Select the parts for your engine from the Parts List and
purchase spares from your
local Westerbeke Dealer
or
Distributor. For example, hardware kit #33093 in-
cludes replacement
elements with gaskets (items
#6,
8,
20,
21). If a leak should develop at a fuel banjo or
sealing washer location that cannot be remedied
by
a
slight tightening of the filter cup retainer, replace the fil-
ter along with the O-rings supplied with the new filter.
After the first
50
hours
of
operation, loosen retainer ring
#
23
and discard filter element #
21.
Clean bowl #
22
and install a new filter using a new #
20
gasket. Be
careful
to
catch any fuel that
may
spill
from
within
these
fuel filter assemblies. This same service
is
required
of
the # 6 filter element in the electric fuel lift pump.
Similarly, install a new # 6 filter element along with a
new # 8 gasket. The base of the electric fuel pump
is
removed with the aid
of
an open end wrench. Twist the
base off the pump's locking tabs and reinstall the base
by twisting it back on the locking tabs.
Place the
wrench on the hex nut cast into the base.
After the first
50-hour change, the change period may
be increased to
200 hours or once per season.
Westerbeke
Diesel Engines 44
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