Carbon Monoxide Checklist

Published in February 2019

Before you operate your boat, make sure to check the following on EACH and EVERY trip.

  1. Educate all passengers about carbon monoxide poisoning.
  2. Make sure all exhaust clamps are in place and secure.
  3. Look for exhaust leaking from exhaust system components, indicted by rust and/or black streaking, water leaks, or corroded or cracked fittings.
  4. Inspect rubber exhaust hoses for burned or cracked sections. All rubber hoses should be pliable and free of kinks.
  5. Confirm that water flows from the exhaust outlet when the engines and generator are started.
  6. Listen for any change in exhaust sound that could indicate an exhaust component failure.
  7. Test the operation of each carbon monoxide detector by pressing the test button. Make sure the battery is installed properly and is in good condition. Never remove the battery unless replacing it with a new batter.

It is also recommended that a qualified marine technician check the following items on your boat at least once a year.

  1. Replace exhaust hoses if any evidence of cracking, charring or deterioration is found.
  2. Inspect each water pump impeller and the water pump housing, and replace if worn. Make sure cooling systems are in proper working condition to prevent overheating and burn through the exhaust system.
  3. Inspect each of the metallic exhaust components for cracking, rusting, leaking or loosening. Pay particular attention to the cylinder head, exhaust manifold, water injection elbow, and the threaded adapter nipple between the manifold and the elbow.
  4. Clean, inspect and confirm proper operation of the general cooling water anti-siphon valve (if equipped).

Courtesy of a state of Colorado brochure on carbon monoxide, paid for in part by the Double Angel Foundation.