Mercury 300 - PRO MAX 3.0L User Manual page 12

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GENERAL INFORMATION
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Carbon Monoxide Risk (Continued)
INSUFFICIENT FRESH AIR FLOW
Under certain conditions, enclosed or canvas enclosed cabins or
cockpits with insufficient ventilation may draw in carbon monoxide.
Install one or more carbon monoxide detectors in your boat.
Although rare, on a very calm day, swimmers and passengers in an
open stationary boat with a running engine, or near a running engine
may be exposed to a hazardous level of carbon monoxide.
Insufficient Air Flow Could Occur If:
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While boat is stationary:
a. Boat moored in a confined space with the engine running.
b. Boat is moored close to another boat with its engine running.
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While boat is moving:
a. Running the boat with the trim angle of the bow too high.
b. Running the boat with no forward hatches open (station
wagon effect).
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Courtesy of ABYC