What should you do before starting an inboard gasoline engine?

Before starting an inboard gasoline engine, operating the blower for at least four minutes is crucial for safe operation. This procedure allows for the removal of any potentially hazardous vapors that may have accumulated in the engine compartment. Gasoline engines can produce flammable fumes, and starting the engine without clearing these vapors may lead to dangerous consequences, including the risk of explosion or fire.

Operating the blower helps ensure that the engine compartment is ventilated and that there is a sufficient mixture of air to prevent the ignition of any combustible vapors. This step is an essential safety practice that should always be followed prior to engine operation, thereby enhancing the overall safety of both the operator and bystanders.

While checking the fuel level, inspecting the engine for leaks, and reviewing safety guidelines are also important steps in the pre-operation process, the immediate priority is to address any potential vapor buildup to ensure a safe environment for starting the engine.