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2. Turn ON the macerator pump switch which is located
in the head above the receptacle. Allow the pump to
run until the storage tank is empty. The sound of the
pump's motor load and speed will change when the
tank becomes empty.
3. Turn the switch off.
4. Turn the discharge valve handle to the closed posi-
tion, and secure it. The thru hull valve must be closed
to prevent water from being forced back into the sys-
tem.
Discharging waste overboard is illegal in most U.S. wa-
ters today. Discharge is limited to certain coastal waters,
a designated distance off-shore. Check with your local
boating regulations before proceeding with any discharge
activities.
Some local regulations require overboard discharge sys-
tems be physically secured in a closed position during
use of the boat in waters designated as 'no discharge'
areas. Check with local boating regulations. Refer to the
manufacturer's literature for additional information.
D. Dockside Pump-Out
Waste can be removed from the holding tank by taking
the boat to a dockside waste pumping station. Most marina
fueling facilities provide such services.
To pump out the holding tank:
1. Be sure the head has some water in the bowl.
2. Connect the dockside pump out connection to the
WASTE plate located on the deck.
Usually the dockside pump out connection will screw
into the waste deck plate or has a rubber sleeve that
inserts into the plate and must be held in position
during the pump out operation.
3. Have the pumping station operator activate the pump-
ing equipment. The waste will be drawn from the hold-
ing tank and into the pumping station's disposal tank.
4. Remove the pump out connection from the deck plate.
Add at least 5 gallons (1 gallon on portable units) of
clean water to the holding tank through the waste
deck fitting using a dockside water hose.
Vista Owners Manual
10/93
5. Repeat steps 2 & 3 above to pump out the water
used in 4 to flush the holding tank.
6. Add waste holding tank treatment chemical to the
head bowl. It is available from the dockside pump-
ing station or can be obtained from your dealer. Flush
at least twice.
Be careful when handling and storing treatment
chemicals. Not only are they toxic, but they
will also stain and damage surrounding surface.
G - 7
SYSTEM MAINTENANCE
Information supplied with water and waste system compo-
nents by the equipment manufacturers is included with
this manual. Refer to this literature for additional opera-
tion and service information.
Be sure the batteries in the boat are properly charged.
Operating the pressure pump from a battery with a low
charge will result in pump cycling. This could lead to
premature pump failure.
The decomposition of waste produces a color-
less, odorless gas, methane, that is lighter than
air, combustible, and extremely lethal. Always
provide sufficient ventilation when effecting re-
pairs to the waste system and allow no odor
from the waste system to go un-resolved.
A. Clean Vents and Screens
Periodically remove the vent caps and check the water
tank vent(s). Clean the thru-hull vent fitting(s) of any dirt,
wax, plastic particles, etc. Always replace the caps af-
ter cleaning.
NOTICE
Failure to keep the water tank vent fittings clean
will cause excessive pressure buildup within the
tank during filling. This can cause water tank
damage.
Section G
Page 6
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