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Inspect and clean the shower sump every 30 days. Some
water will always be in the compartment. Sediment and
other debris will buildup and affect the automatic bilge
switch and pump operation. Remove the pump's cover
and clean the screen. The screen will become blocked
and the pump will not operate properly. To clean the com-
partment, use baking soda and a fine wire brush to re-
move dirt and other debris. This will also serve to disin-
fect the area.
B. Winterizing the Water System
Winter lay-up service procedures should include a thor-
ough draining of the water system. Disconnect all ac-
cessible fittings. Blow out all lines. Be sure the hot
water heater, fresh and grey water tanks, transom shower,
pumps and lines are completely dry. Leave all faucets
open. Freezing water can cause severe damage to all
water system components.
NOTICE
Always winterize the fresh water system prior to
winterization of the hull drainage (bilge pump)
system.
Draining the system as mentioned can be very tedious
and an incomplete job can result in expensive repairs.
The use of nontoxic antifreeze (such as R.V. antifreeze)
designed for fresh water systems considerably reduces
the work necessary and is a more positive means of
winterizing the system. Follow the directions included
with the antifreeze solution.
To winterize:
1. Turn on the water pump and drain the water tank by
opening a faucet (the pump will run faster when it is
empty).
NOTICE
Be sure the circuit breaker for the water heater in
120 Volt AC panel is in the OFF position. The
water heater will be damaged immediately by
supplying electrical power to an empty water
heater.
DO NOT run the water pump without water in the
system. Pump damage will result. Be watchful
and turn the pump off as soon as the tank be-
comes empty.
2. Add 15 gallons of R.V. antifreeze to the water tank.
378 Vista™ Owner's Manual
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378
NOTICE
The hot water heater will require approximately
five gallons of antifreeze before the hot water lines
will have antifreeze running through them. The
cold water faucet should be turned OFF at some
point to test for antifreeze in the hot water line.
3. Turn ON faucets (both hot and cold) one at a time
until undiluted antifreeze is seen. Make sure the
transom shower, head faucet and galley faucet have
antifreeze coming out, too.
4. Activate the shower sump pump and pour approxi-
mately 1 quart of nontoxic antifreeze down the shower
drain. The shower sump will discharge some of the
antifreeze overboard.
Use only nontoxic antifreeze solutions such as
R.V. antifreeze. DO NOT use ethylene glycol
solutions; the type that is used in engine cool-
ant systems. These are toxic.
NOTICE
Be sure to wipe up any antifreeze that has been
spilled on the fiberglass shower surfaces.
C. Winterizing the Waste System
To winterize the waste holding tank, flush the tank with
soap, water and a deodorizer (e.g., Lysol Liquid). Empty
the tank and pour two (2) gallons (3 gallons if equipped
with overboard discharge) of R.V. antifreeze into the bowl
and flush.
If the boat is equipped with overboard discharge capabili-
ties, follow the normal procedures above. Run the dis-
charge pump only long enough until the antifreeze solu-
tion is being pumped overboard.
For additional information, refer to the manufacturer's
manuals in the owner's packet.
NOTICE
The instructions listed in this section provide a
working knowledge to winterize the water and
waste systems. However, to prevent possible
damage to components in your boat, Four Winns
recommends having the boat winterized by your
Four Winns dealer.
Section J
Page 7
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