Fuel System - Westerbeke 12C-TWO Operators Manual And Installation Manual

FUEL SYSTEM
Diesel Fuel
Use #2 diesel fuel with a eetane rating of 45 or better. Never use kerosene or heavy oil.
In cold weather particularly, water vapor is produced by condensation when air is present in the fuel tanle
Keep fuel tank(s) full and completely free of dirt and water.
Fuel FilteriWater Separators
A primary fuel filter of the water separating type must be installed between the fuel tank and the engine.
To remove water and other contaminants from the fuel before they can be carried to the fuel system on the
engine.
Most installers included with the engine installation package a type of filter/water separator for they are
aware of the problems contaminants in the fuel can cause - all of which are not warrantable through
Westerbeke.
A typical fuel filter/water separator is
illustrated in this diagram. This is the
Raycor Model 500 MA. Keep in mind
that if a water separator type filter is
not installed between the fuel supply tank
and engine-mounted fuel system, any
water in the fuel will affect the fuel pump,
engine filter, and injection equipment. The
owner/operator is responsible for making
certain the fuel reaching the engine's injection
equipment is free of impurities. This process
is accomplished by installing and maintaining
a proper filtration /separation system.
In addition, any gasoline in the fuel system
will damage the engine's fuel injection pump
assembly and injectors as gasoline does not
have the same lubricating qualities as diesel
fuel.
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If a filter/water separator is not installed between the fuel tank and the engine-mounted fuel system, water
in the fuel system wiIl inhibit proper starts and particles will pass on to the lift pump's filter, eventually
clogging it and pass on into the engine's injection equipment.
Notes on Fuel System
WARNING
Shut off the fuel service valve at the engine when servicing the fuel system. Take care in catching any
fuel that may spill from within the fuel filter assembly when the filter cup is removed. DO NOT allow
any smoking, open flames, or other sources of fire near the fuel system when servicing. Ensure proper
ventilation exists when servicing the fuel system.
37 Westerbeke Engines