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Chapter 4
Changing Element
The element due to contaminated fuel needs to be changed
periodically. Be sure to close the generator fuel tank valve
located under the master state room berth before changing
the element since the fuel tank is higher than the fuel fi lter.
Signs of necessary element replacement may be power loss,
hard starting or large levels of contaminants/water in the
element collection bowl when drained.
To replace the element fi rst remove the old one by turning
it in a counterclockwise direction by hand. Be sure to have
a pan in place to catch any dripping fuel. Coat the new
element and O ring with fresh diesel fuel and then thread
the element clockwise by hand until snug. Do not use
any tools.
Loosen the vent plug. Turn the primer valve counterclockwise
until fully open. Turn on the generator fuel tank valve
located under the master state room berth. Hand operate
the primer valve up and down until the element is full as
seen by fuel purging at the drain plug. Bleed the system as
needed. Close the vent plug snugly. Close the primer valve
by turning the valve clockwise until tight.
Start the engine and check for fuel or air leaks.
Bleeding System
Periodically air may need to be bled from the generator
fuel system. Basically as stated above loosen vent plug and
the hand operated fuel primer valve. Pump the primer
until a solid stream of fuel comes out of the plug verses
some fuel and some air bubbles. Tighten all components
until snug.
Draining Collection Bowl
Since water is heavier than fuel it will settle in the
collection bowl at the bottom of the element. The vendor
recommends inspecting/draining the collection bowl daily.
To check/drain the element loosen the drain plug on the
bottom of the collection bowl. Use an environmentally
safe container to catch any contaminated fuel. Dispose
of according to local, or state regulations. Close the drain
snugly when fi nished to prevent any fuel leakage.
Note: Water in diesel fuel will gather at the bottom of a
container since it is heavier than diesel fuel and will appear
as a different color and consistency.
INLET
OUTLET
VENT PLUG
DRAIN
PLUG
FUEL PRIMING
VALVE
TYPICAL GENERATOR FUEL FILTER
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