Regal 42SC Owner's Manual page 38

CARBON MONOXIDE DETECTORS
Your Regal yacht features designated sleeping accomodations
along with galley sink and head compartments. Select older
yachts featured gasoline for propulsion and a gasoline
generator. On these vessels a CO detector must be
installed.
With diesel propulsion and diesel generation a CO
detector is not required but "common sense" tells us we
need to have them installed on board. They are standard
equipment on your Regal diesel yacht. Mooring by boats
running gasoline generators along with vessels using gas
cooking/grilling/heating devices could lead to dangerous
levels of carbon monoxide on your boat. Always be aware
of other vessels mooring close to you especially if you are
staying on board overnight. Read the owner's manual and
vendor information regarding the CO detectors installed
on your vessel.
Follow the periodical service recommendations per the
vendor regarding recalabration of the carbon monoxide
detector. Never attempt to repair a CO detector yourself.
Get to know the signs of carbon monoxide poisoning.
Remember that carbon monoxide (CO) is known as
the silent killer.
At Least Annually
To be performed by a marine professional:
Replace exhaust hoses or muffl ers if any evidence
of cracking, charring or deterioration is found.
Replace the engine water pump impeller along with
the plate and housing if necessary. This will help prevent
cooling system and exhaust system overheating.
Inspect each of the metallic exhaust components
for cracking, rusting, leaking or looseness. Pay detailed
atttention to the exhaust manifold, cylinder head, water
injection elbows.
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Chapter 2