Owner`s manual

3100 OFFSHORE

1.3 Engine Exhaust System

Engine exhaust exits the rear of the boat through the exhaust system. The system consists of engine exhaust

manifolds, exhaust hoses, mufflers, and thru-hull exhaust fittings.

Inboard boats use the exhaust system to relinquish exhaust gases and cooling water. A periodic inspection of

the hoses, mufflers and related parts should be made to ensure that leaks or heat deterioration have not resulted.

Periodically inspect these items for signs of deterioration or damage. Replace them as necessary.

DO NOT INHALE EXHAUST FUMES! EXHAUST CONTAINS CARBON MONOXIDE THAT

IS COLORLESS AND ODORLESS. CARBON MONOXIDE IS A DANGEROUS GAS THAT IS

POTENTIALLY LETHAL.

1.4 Engine Cooling System

All marine engines use surface water as a cooling medium. The cooling water enters the system through a

water intake in the hull and is expelled through the exhaust system. Water is pumped through the water inlets,

circulated through the engine block or heat exchanger and relinquished with the exhaust gases through the

exhaust system. The water pump uses a small impeller made of synthetic rubber. The impeller and water pump

cannot run dry for more than a few seconds.

NEVER RUN THE MOTOR WITHOUT WATER FLOWING TO THE WATER PUMP. SERI-

OUS DAMAGE TO THE WATER IMPELLER OR ENGINE COULD RESULT.

Inboard engines use a thru-hull water intake scoop and strainer. This strainer is located on the hull bottom

and must be kept free of mud, weeds and other debris. A ball valve is provided on each intake thru-hull. Be

sure these valves are in the open position before operating the boat engines.

Inboard Drive System