Four winns Vista (1994-2000 models) Owner's Manual page 49

If the boat is equiped with overboard discharge capa-
bilities, follow the normal procedures above. Run the
discharge pump only long enough until the anti-freeze
solution is being pumped overboard.
For additional information, refer to the manufacturer's
manuals included with this manual.
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.
Vista Owners Manual
10/93
Section G
Page 8