2
. Reduced power resulting from increased altitude
may require adjustments to propeller size.
c.
d.
Shorted or opened circuit high tension spark
plug cables
3
. Heavy sea or out of trim conditions tend to load
engines resulting in reduced performance and
thereby increasing their CO production.
Incorrect ignition timing.
4. General
S. Portable Generator Sets
a.
b.
Worn piston rings and valves
Engine temperature - Cold running engines
increase CO production. Engine cooling water
system design and selection of thermostat(s)
are primary considerations affecting engine
operating temperature. Generally, an engine
produces less CO if it operates at a rela-
tively 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 locations which can lead to an increase
in the accumulation of carbon monoxide in the accom-
modation occupied space. Do not use gasoline-pow-
ered portable generators on Four Winns® boats.
c.
d.
Exhaust Back-Pressure - Certain alterations
to the exhaust system may increase engine
exhaust back pressure and CO production.
Restricted engine room or compartment
ventilation
T. Maintenance - Engine Performance
Efficient engine performance is vital to minimizing
CO production. The following items are those con-
sidered 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
Damaged and fouled running gear (i.e., outdrive
shaft, strut propeller, rudder and trim tabs,
if applicable)
Carburetors/Injectors
a. Dirty or clogged flame arrester
3.
Incorrect selection of propeller size
b.
Malfunctioning automatic choke plate or faulty
adjustment of manual choke plate
V. Maintenance - Exhaust System Integrity
c. Worn float needle valve and seat
d. High float level
Gas tight integrity of exhaust systems must be main-
tained to insure that leakage of CO within the boat
does not occur. Disassembly may be required
to carry out a thorough inspection. Repair or replace
components as indicated. Inspect the following:
e.
f.
Incorrect idle mixture adjustment
Dirty or worn injectors
3.
Ignition System
a.
b.
Fouled or worn spark plug.
Worn points or incorrect gap on points
Boating Safety - Section B
Owner’s Manual Page 33
| Categories | Four Winns H-Series Manuals, Four Winns Manuals |
|---|---|
| Tags | Four Winns H |
| Model Year | 2011 |
| 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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