System Maintenance - Four winns 338 Vista Owner's Manual

NOTICE
Discharging waste overboard is illegal in most
US waters today. Discharge is limited to
certain coastal waters, a desig nated distance
offshore. Check with your local boating
regulations before proceed ing with any
discharge activities.
Some local regulations require overboard
dis charge systems be physically secured in a
closed position during use of the boat in waters
designat ed as "no discharge" ar eas. Check
with local boating regulations. Refer to the
manufacturer's literature for additional
information.
C. Dockside Waste Pump Out
On most Vista models waste pump out capability is
®
available. 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.
The waste holding tank should be emptied upon visual
inspection of the waste holding tank and determining
the waste holding tank's capacity is almost full or by
using the waste level indicator if so equipped. Waste
level indicators are typically located in the head. DO
NOT ALLOW THE WASTE TANK TO BECOME
OVERFILLED.
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.
NOTICE
Usual ly 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. If the hose is not air tight or connect-
ed prop erly, waste could spurt out or leak
around the deck fitting and into the boat.
3. Have the pumping station operator activate the
pumping equipment. The waste will be drawn from
the holding tank and into the pumping station's
disposal tank.
Water and Waste Systems - Section J
4. Remove the pump out con nection from the deck
plate. Add at least 5 gallons of clean water to the
hold ing tank on most models through the waste
deck fitting using a dockside water hose.
5. Repeat steps 2 & 3 above to pump out the water
used in step 4 to flush the holding tank.
6. Add waste holding tank treatment chemical to the
head bowl. It is available from the dock side
pumping station or can be obtained from your
dealer. Flush at least twice.
Be careful when handling and storing
treatment chem i cals. Not only are they toxic,
but they will also stain and damage
surrounding sur face.
J - 7 SYSTEM MAINTE NANCE
Information supplied with water and waste system
compo nents by the equipment manufacturers is
included with this manual. Refer to this literature for
addi tional operation 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 prema ture pump failure.
The decomposition of waste produces a
colorless, odorless gas, methane, that is lighter
than air, combusti ble, and ex treme ly le thal.
Always provide sufficient ventila tion when
effecting repairs to the waste sys tem and allow
no odor from the waste system to go
unresolved.
A. Clean Vents and Screens
Periodically, inspect the water tank vents and thru-hull
vent fittings for any dirt, wax, etc. Carefully remove
any obstruction with a pipe cleaner or similar device.
Be sure not to puncture the screen. The stainless
steel vent cap is not removable.
Owner's Manual Page 94