System Maintenance - Four winns SL Series Owner's Manual

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To pump out the holding tank:
1. 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.
2. Have the pumping station operator activate the
pumping equipment. The waste will be drawn from
the holding tank and into the pumping stations
disposal tank.
3. Remove the pump out con nection from the deck
plate. Add 1 gallon of clean water to the holding
tank through the waste deck fitting using a dock-
side water hose.
4. Repeat steps 1 & 2 above to pump out the water
used in step 3 to flush the holding tank.
5. Add waste holding tank treatment chemical avail-
able from the dock side pumping station operator
to the head. Flush at least twice.
Be careful when handling and storing treat-
ment chem i cals. Not only are they toxic, but
they will also stain and damage surrounding
sur face.
It will be necessary to remove the top holding tank
of the portable head to fill with water. Refer to the
manufacturer's literature included in the owner's
packet regarding the use, care and maintenance of
the porta-potti.
J - 5
SYSTEM MAINTE NANCE
Be sure the battery(s) 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.
Waste & Water Systems - Section J
The decomposition of waste produces a color-
less, 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 any screens. The stainless
steel vent cap is not removable.
NOTICE
Fail ure to keep the water tank vent fit ting clean
will cause ex ces sive pres sure build up with in
the tank dur ing fill ing. This can cause wa ter
tank dam age.
B. Winterizing the Water System
Winter lay-up service procedures should include a
thorough draining of the water system. Discon nect
all accessible fittings. Blow out all lines. Be sure
the water tank, waste tank, pumps and lines are
completely dry. Freez ing water can cause severe
damage to all water system compo nents.
NOTICE
It may be necessary to dis connect the hose
below the faucet to remove excess water in
the lines to prevent freeze dam age.
NOTICE
Always winterize the fresh water system prior
to winter ization of the hull drainage (bilge
pump) system.
Draining the system as mentioned can be very tedious
and an incomplete job can result in expen sive repairs.
The use of nontoxic antifreeze (such as R.V. anti-
freeze) designed for fresh water sys tems consider ably
reduces the work necessary and is a more positive
means of winteriz ing the system. Follow the direc tions
included with the antifreeze solution.
Owner's Manual Page 82

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