Table of Contents
Advertisement
d. High float level.
e. Incorrect idle mixture adjustment.
f.
Dirty or worn injectors.
3. Ignition System
a. Fouled or worn spark plugs.
b. Worn points or incorrect gap on points.
c. Shorted or opened circuit high tension spark plug
cables.
d. Incorrect ignition timing.
4. General
a. Worn piston rings and valves.
b. Engine temperature - Cold running engines in-
crease CO production. Engine cooling water
system design and selection of thermostat(s)
are primary considerations affecting engine op-
erating temperature. Generally, an engine pro-
duces less CO if it operates at a relatively high
temperature within manufacturer's specifica-
tions.
c. Exhaust Back-Pressure - Certain alterations to
the exhaust system may increase engine ex-
haust back pressure and CO production.
d. Restricted engine room or compartment venti-
lation.
Q. Maintenance - External Conditions
External conditions that contribute to inefficient engine
performance are:
1. Fouled hull bottom.
2. Damaged and fouled running gear (propeller and
trim tabs).
3. Incorrect selection of propeller size.
Vista 248/268 Owner's Manual
03/00
R. CO Detection System
Four Winns® has included two CO detectors as a stan-
dard feature. One of the CO detectors is located in the
forward berth and the other is located in the aft cabin.
CO monitors should be professionally installed
and calibrated. Failure to do so may result in
the improper function of the CO detector.
NOTICE
For information on CO Detection Systems, see
American Boat and Yacht Council (ABYC
Manual) Section A-24, "Carbon Monoxide De-
tectors".
Even with the best of boat design and construction plus
utmost care in inspection, operation, and maintenance,
hazardous levels of CO may still be present in accom-
modation spaces under certain conditions. Continuing
observation of passengers for symptoms of CO intoxi-
cation can be supplemented by an alarm type CO detec-
tion device in the accommodation space.
NOTICE
A CO detector is not a gas/fuel vapor detector.
Gas/fuel vapor detectors do not monitor the
buildup of carbon monoxide in an enclosed
area. For further information on the design,
construction, and testing of boats in consider-
ation of carbon monoxide, see ABYC TH-23.
NOTICE
Detection devices should meet the requirements
of ABYC A-24 "Carbon Monoxide Detection Sys-
tems on Boats".
B - 3
SAFE BOATING PRACTICES
NOTICE
YOU are responsible for your own safety, the
safety of your passengers, and the safety of
fellow boaters.
Section B
Page 9
Advertisement
Table of Contents
