A bilge blower is not only required by the USCG as a piece of equipment, but it is also an essential safety component that should already be present on your yacht. When your boat is not in use, the engine cover has a greater chance of becoming a breeding ground for combustible gases.
If you don't let them out of the boat before you start the engine, you could trigger an explosion. A bilge blower is essentially a fan that is used to remove potentially hazardous pollutants from the enclosed space that is the engine compartment.
Make sure that it is turned on every time before you try to crank the motor, and let the blower run for a few minutes, but don't let it function continually if it wasn't built for this kind of operation, especially when you are replenishing it.
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