42C System Operations - 40
be replaced, make sure that only USCG
TYPE A1 are used. TYPE A2 is not ac-
ceptable for fuel distribution.
Fuel Supply Valves
If your 42C is powered by gasoline en-
gines, it is equipped with an anti-siphon
valves, located on each fuel supply hose
at its connection to its respective fuel tank
pickup tube. The purpose of the anti-si-
phon valve is to immediately stop the fl ow
of fuel from the fuel tank in the event of
a break in the fuel supply hose. The anti-
siphon valves are automatic and do not
require manual operation.
Fuel Filtration
The fuel that is supplied to the engines
and generator (if so equipped) may con-
tain impurities found in the fuel tanks or
contained in the fuel from your supplier.
If these impurities are not removed prior
to entering the engines/generator, perfor-
mance may be seriously affected. Remov-
al of the fuel impurities is accomplished
by external fuel fi
lters, which are located
within the fuel supply line.
If your 42C is equipped with gasoline en-
gines, each engine has its own separate
fuel fi lter, located on the forward inboard
side of the engine.
If your 42C is equipped with diesel en-
gines, each engine has a separate fuel fi l-
ter located away from the engine. The fuel
fi lter is located on the forward bulkhead in
the engine room.
The photo below shows the fuel fi lter for
the diesel engine.
If your 42C is equipped with a genera-
tor, a remote fuel fi lter with a fuel shut-off
valve is located in the main generator fuel
supply line, separate from the engine fuel
supply lines. The photo below shows the
generator fuel fi lter.
An Authorized Silverton Service Techni-
cian should replace all fuel fi lters annually
prior to spring launch.
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