Abstract: A drain system for a marine engine cooling system, includes an engine having one of a closed coolant circuit or an open cooling circuit, a raw water passageway having a raw water intake for drawing raw water into the raw water passageway, including a hose arranged to have a vertically high point and a vertically low point, a drain valve connected to the raw water passageway at the in hose vertically low point, a vent line connected to the raw water passageway at the hose vertically high point and a control handle located remote from the hose vertically high point and the hose vertically low point, the control handle having a vent valve connected to the vent line, the control handle being connected to the drain valve by a cable, wherein movement of the control handle selectively simultaneously opens and closes the drain valve and the vent valve.

Abstract: A drain system for a marine engine cooling system, includes an engine having one of a closed coolant circuit or an open cooling circuit, a raw water passageway having a raw water intake for drawing raw water into the raw water passageway, including a hose arranged to have a vertically high point and a vertically low point, a drain valve connected to the raw water passageway at the in hose vertically low point, a vent line connected to the raw water passageway at the hose vertically high point and a control handle located remote from the hose vertically high point and the hose vertically low point, the control handle having a vent valve connected to the vent line, the control handle being connected to the drain valve by a cable, wherein movement of the control handle selectively simultaneously opens and closes the drain valve and the vent valve.

Abstract: Method and arrangement for a marine combustion engine exhaust system. The arrangement includes at least two substantially upstanding exhaust pipe arms that are coupled together in common closed fluid communication with a stem exhaust pipe. A pressure equalizer is fluidly connected between the upstanding exhaust pipe arms. The pressure equalizer is configured to provide sufficient fluid passage from each exhaust pipe arm to another to prevent flow back of sea water to a marine combustion engine associated therewith.

Abstract: Method and arrangement for a marine combustion engine exhaust system. The arrangement includes at least two substantially upstanding exhaust pipe arms that are coupled together in common closed fluid communication with a stem exhaust pipe. A pressure equalizer is fluidly connected between the upstanding exhaust pipe arms. The pressure equalizer is configured to provide sufficient fluid passage from each exhaust pipe arm to another to prevent flow back of sea water to a marine combustion engine associated therewith.