Westerbeke BCD 4.4KW Operator's Manual page 40

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 of the fuel filters. Simply remove the and replace the filter elements (take
care in catching any fuel that may drain out of 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 cranking. This sea water can
enter the engine's cylinders by way of the exhaust manifold once the exhaust system fills.
Prevent this from 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 a
start. Engine damage resulting from this type of sea water entry is not a warrantable issue;
the owner/operator should keep this in mind.
ReplaCing the Fuel Filter 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.
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Westerbeke Generator