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FUEL SYSTEM
Fuel from the fuel
tank is brought to the engine by the aid of an
engine-mounted electric fuel pump.
(Note:
A filter/water separator
is recommended to be installed in the fuel supply line between the
fuel tank and the connection to the electric fuel pump.)
Fuel passes
through the electr ic pump to the eng ine-mounted fuel f il ter and then
to the high pressure injection pump.
The injection pump delivers the
fuel
through high pressure lines
to each
inj ector.
The
injectors
spray the fuel into the engine's combustion chambers where it ignites.
Fuel not used is returned to a fitting on the injection pump where it
combines with unused fuel from the injection pump and is returned to
the fuel tank.
Fuel Filters (Engine Mounted)
The fuel filters are easy to handle cartridge type and constructed of
paper.
One filter element is located in the base of the electr ic fuel pump
and the other is located in the filter housing adjoining the electric
pump.
(Note:
Both elements should be replaced after
the ini tial
50 hours of engine operation and then every 200 hours or once a season
as needed.)
Changing the Fuel Filters
The
fuel
filter
element
located
in
the electr ic fuel pump can be
removed by undoing the base of the pump.
A 17 rom wrench 5 rom thick
should be used to undo the base.
Turn the base clockwise to replace.
(Fuel will spill from the pump when the base is removed so be prepared
to catch it.)
Remove the base and filter element.
Install the new
element, insure the sealing gasket in the base cover is in good con-
dition
and
the
round
magnet
is
in
the
center
of
the
cover
when
reinstalling.
The filter element in the cartridge is a paper type and to remove it,
unscrew the knurled retainer ring and drop the ring and lower housing
off
the filter
bracket.
(Fuel will spill from the housing,
so be
prepared to catch it.)
The filter element is then withdrawn from the
filter bracket.
Two O-rings are located in this bracket and should be
replaced as needed.
One seals the lower housing and the other seals
and holds the filter element in place.
Replace the filter element and the lower housing and retainer ring and
tighten the retainer ring.
Caution:
When threading the retainer ring onto the bracket, take care
not to cross thread it.
It should thread easily onto the bracket
until the lower housing contacts
the sealing O-r ing.
Hand tighten
only.
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