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The following suggestions can help prevent exhaust fumes
from entering the boat or injuring people in the vicinity:
1. DO NOT allow the boat to remain stationary with the
engines running for an extended period of time. Do
not stand or swim near the exhaust output or outdrive
when the engine is idling.
2. Use extreme caution while operating the engines in
confined areas such as enclosed slips, congested
piers, or in any area where the exhaust outlets are
facing or near a bulkhead or wall structure of any
kind. Operation under such conditions could easily
lead to exhaust gasses (carbon monoxide) entering
even though you may have all the hatches, windows,
doors and portholes closed.
3. Never operate your generator while the boat is moored
against any other boat, dock or wall structure that is
against or near the exhaust outlet. Again, operation
under such conditions could easily lead to exhaust
gases (carbon monoxide) entering your boat or the
boat to which you are moored, even though you may
have all the hatches, windows, doors, and portholes
closed.
4. Under certain conditions, exhaust gases can enter
the boat through the sink drains. Each sink drain
has a water trap installed to help prevent this. To be
effective, the sink drains must have water in them.
Normal use of the sinks will provide the water needed
for this to occur.
5. Persons sleeping can be easily overcome by carbon
monoxide because they are unaware of its presence.
Sleeping while the engines or generator are running
is not recommended. If persons are sleeping aboard
while underway, or while the generator is running,
those awake should monitor for carbon monoxide
accumulation in the cabin; especially the sleeping
areas. Open forward facing windows or deck hatches
to provide fresh air ventilation. Keep hatches, win-
dows, and doorways that face aft or towards the ex-
haust discharge closed.
NEVER operate the propulsion engine(s) or gener-
ator while everyone on-board is sleeping. Fatal
carbon monoxide poisoning can occur.
6. If possible, ventilate your cabin while under way.
Open a forward hatch or window to allow air to travel
through the cabin. Be very careful of operating the
378 Vista™ Owner's Manual
™
378
boat with the cabin door or windows that face aft,
open. The natural vacuum created during operation
may allow exhaust gasses to be drawn into the cabin.
NOTICE
Current deck hatches are designed to allow ven-
tilation when locked in a partially open position.
7. Inspect the engine exhaust system frequently for water
and exhaust gas leakage, hose deterioration, and
loose hose clamps. See Section R - General Main-
tenance for additional information.
8. Have a competent marine engine service technician
inspect your exhaust system whenever your boat is
in for service, or if you notice a change in the sound
of your engines.
For additional information, refer to Section B-2 - Carbon
Monoxide.
B. Carbon Monoxide Monitor
A carbon monoxide (CO) monitor(s) will sound an alert
should carbon monoxide reach an unsafe level in the cabin
of your Vista™. The CO Monitors are standard equip-
ment and are located in the aft cabin and forward cabin.
Refer to the manufacturer's literature included with the
owner's packet.
Never disarm a CO detector. If a CO detector
alarms, immediately ventilate the area and
check passengers for symptoms of CO intoxi-
cation. See your Four Winns dealer for assis-
tance in diagnosing the cause for the alarm.
E - 3
ENGINE & DRIVE SYSTEM
A. Engine
Powering your 378 Vista™ inboard is your choice of
twin Mercruisers® (gas), twin Volvo-Penta® (gas/die-
sel), or twin Caterpillar® (diesel) inboard engines. Please
consult the engine owner's manual provided with this
manual for operation and maintenance information.
B. Inboard V-drives
On the V-drive propulsion system of the 378, all shifting
and gearing components are installed inside of the hull,
only the propeller shafts and associated equipment are
Section E
Page 2
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