MARLOW-HUNTER MH31, Operator'S Manual

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NOTE: Please refer to the fuel filter manufacturer's OEM
manual for further details regarding operation, care and main-
tenance.
5.4.2 Generator Filter
The optional generator also has a separate fuel fil-
ter apart from the generator unit (see Fig. 5.10). It is
located just aft of the fuel tank (near the engine filter(s))
and can be accessed by the upper salon floor hatch.
5.4.3 Fuel Filter Service
Refer to the fuel filter's OEM manual for details regarding
the following:
Priming the unit
Servicing the unit
Filter replacement
Troubleshooting procedures
Replacement parts
NOTE: Please refer to the fuel filter manufacturer's OEM
manual for further details regarding operation, care and main-
tenance.
5.5 Fueling Your Boat
Before fueling, check the fuel system for leaks. Check
components for weakening, swelling, or corrosion.
Immediately replace any leaking or defective compo-
nents before operating an engine. Keep the tank as
full as practical to reduce condensation and the accu-
mulation of moisture in the fuel system. However,
consider fuel expansion during warm and hot weather
and fill accordingly. A fuel tank may overflow if its fuel
expands beyond its capacity. Fuel expansion may occur
in situations involving warmer environments where fuel is
pumped from cool underground storage tanks or when air
temperatures are cooler (night and early morning).
Follow these procedures to fuel your boat:
Safely and securely moor your boat to the dock.
Turn off engine.
Turn main battery switches off to prevent sparks from
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2.
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5.
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generator). Disconnecting these fittings without properly bleed-
ing the system of fuel could result in emptying the fuel filter and
causing a fuel spill. Only a qualified technician should ever
make repairs to your fuel system.
Turning the fuel line valve handle so it is perpendicular
to the valve body shuts off the supply or return. Turning
the handle so it is in line with the valve body opens the
valve.
5.4 Fuel Filters (Water Separators)
The fuel supplied to the engine (and optional generator)
may contain impurities found in the fuel tank or from the
fuel itself. If these impurities are not removed prior to
starting the engine (or optional generator engine), perfor-
mance may be seriously affected. Removal of the fuel
impurities is accomplished by external fuel filters.
5.4.1 Engine Filter
The engine has a separate filter located apart from the
engine (the engine assembly has a secondary fuel filter)
and is mounted on the port aft wall of the engine compart-
ment. It can be accessed through the aft cabin engine
access cover (Fig. 5.5).
An authorized service technician should replace the filter
annually prior to spring launch. More frequent replace-
ments may be required if engine performance is degrad-
ed due to contaminated fuel.
Figure 5.5
Fuel Systems
5.3