Fuel Filters - Hunter e33 Operator's Manual

tem of fuel could result in emptying the fuel filters and causing a
fuel spill. Only a qualified technician should ever make repairs
to your fuel system.
The fuel supply valves are the "ball type" valves. Turning
the 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, as shown in Fig.
5.4.
Example of Fuel Supply Lines and Valves
Open Shut
5.4 Filters (Fuel Water Separators)
The fuel supplied to the engines or the generator (if so
equipped) may contact impurities found in the fuel tanks
or in the fuel from your supplier. If these impurities are
not removed prior to starting the engine or generator, per-
formance may be seriously affected. Removal of the fuel
impurities is accomplished by external fuel filters.
5.4.1 Main Engine Filters
The engine has a separate filter located away from the
engine. Check the Fuel Arrangement illustration at the
end of this chapter for the exact location of the filter.
An authorized service technician should replace all filters
annually prior to spring launch. They may need more
frequent replacement if you notice poor engine/generator
performance due to contaminated fuel.
On the following page, Fig. 5.6, pg. 5.7, you will find an
illustration for the Racor Fuel Water separator (commonly
referred to as the fuel filter). This will break down the
components of the filter and their uses within the filter.
Hunter e33 • Fuel Systems
A quick view of the
difference in an open
and shut fuel valve
OPEN OPEN
SHUT SHUT
Fig. 5.4
5.4.2 Fuel Filter
To service the filter:
1. Make sure the engine is off.
2. Close shut-off valve between fuel tank and filter if
applicable.
3. Open vent plug on mounting head with a ½" wrench.
Note: Do not leave drain open for very long as it will
empty filter of all fuel.
4. When fuel is detected coming out of drain, close drain
quickly.
5. Close vent plug and tighten snugly.
6. Open shut off valve.
Follow priming instructions.
Consult your owner's packet for more information con-
cerning this filter or for replacement parts.
5.4.3 Here are some general guidelines for fueling
your boat:
CAUT I ON
!
Using the wrong type of fuel will result in severe
damage to the engines. Refer to your owner's
manual for fuel recommendations.
5.5
Fig. 5.5
!