™
Q. Running of Engines in Idle
b.
Malfunctioning automatic choke plate or faulty
adjustment of manual choke plate
Engines running in idle exhaust carbon monoxide that
can accumulate near the hull of the boat. Do not stand
or swim near the engine exhaust or outdrive when en-
gines are idling or generator is running.
c.
d.
e.
f.
Worn float needle valve and seat
High float level
R. Altitude and Sea Conditions
Incorrect idle mixture adjustment
Dirty or worn injectors
Operation at altitudes greater than 5,000 feet contributes
to inefficient engine performance and may require ad-
justmentstotheignitionsystems,fuelsystems,orchang-
ing the propeller’s size or gear ratio.
3.
Ignition System
a.
b.
c.
Fouled or worn spark plug.
1.
Failuretomakeadjustmentstoignitionsystems and/
or fuel systems for altitude conditions may cause
an increase in CO production.
Worn points or incorrect gap on points
Shortedoropenedcircuithightensionsparkplug
cables
2. Reduced power resulting from increased altitude
may require adjustments to propeller size.
d.
Incorrect ignition timing.
3.
Heavy sea or out of trim conditions tend to load
engines resulting in reduced performance and
thereby increasing their CO production.
4.
General
a.
b.
Worn piston rings and valves
S. Portable Generator Sets
Engine temperature - Cold running engines in-
crease CO production. Engine cooling water
system design and selection of thermostat(s)
are primary considerations affectingengineop-
erating temperature. Generally, an engine pro-
duces less CO if it operates at a relatively high
temperature within manufacturer’s specifica-
tions.
Never use a portable generator on a boat.
Gasoline powered portable generators are available in
the marine market place and are not an option available
through Four Winns. Portable generators will produce
CO. These sets discharge their exhaust products in lo-
cations which can lead to an increase in the accumula-
tion of carbon monoxide in the accommodation (occu-
pied) space. Do not use gasoline powered portable
generators on Four Winns® boats.
c.
d.
Exhaust Back-Pressure - Certain alterations to
the exhaust system may increase engine ex-
haust back pressure and CO production.
Restricted engine room or compartment venti-
lation
T. Maintenance - Engine Performance
Efficient engine performance is vital to minimizing CO
production. The following items are those considered to
have the greatest effect on increased CO production:
U. Maintenance - External Conditions
External conditions that contribute to inefficient engine
performance can include:
1.
2.
Fuel Systems - Fuel that is contaminated, stale or
incorrect octane number
1.
2.
Fouled hull bottom
Carburetors/Injectors
Damaged and fouled running gear (i.e., shaft, strut
propeller, rudder and trim tabs)
a.
Dirty or clogged flame arrester
3.
Incorrect selection of propeller size
Vista™ Owner’s Manual
Section B
Page 9
| Categories | Four Winns Manuals, Four Winns Vista Manuals, Outboard Marine Corporation Manuals |
|---|---|
| Tags | Four Winns Vista 248, Four Winns Vista 268, Four Winns Vista 288, Four Winns Vista 298, Four Winns Vista 328, Four Winns Vista 348 |
| Model Year | 2004, 2005, 2006, 2007, 2008 |
| Download File |
|
| Document Type | Owner's Manual |
| Language | English |
| Product Brand | Boats and Cruisers, Four Winns. For support contact your dealer at http://www.fourwinns.com/locate-dealer.aspx |
| Document File Type | |
| Publisher | fourwinns.com |
| Wikipedia's Page | Outboard Marine Corporation |
| Copyright | Attribution Non-commercial |
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