Engine Exhaust System; Engine Cooling System - Monterey M3 Owner's Manual

Propulsion System
more often. For recommendations regarding cor-
rosion protection for the engine or outdrive, please
refer to the engine owner's manual.
CAUTION
SOME OUTDRIVES REQUIRE SPECIAL ANODES FOR FRESH
WATER AND A DIFFERENT TYPE OF ANODE FOR SALTWATER TO
PROTECT THE DRIVE FROM GALVANIC CORROSION. PLEASE
CONTACT THE ENGINE MANUFACTURER OR YOUR MONTEREY
DEALER FOR THE PROPER ANODE TO USE IN YOUR BOATING
AREA.
CAUTION
MANY ANTIFOULING PAINTS DESIGNED FOR BOAT HULLS CAN
CAUSE SEVERE DAMAGE TO THE OUTDRIVE. DO NOT PAINT
THE OUTDRIVE OR ALLOW IT TO COME IN CONTACT WITH
ANTIFOULING PAINTS DESIGNED FOR BOAT HULLS. CONTACT
YOUR MONTEREY DEALER OR ENGINE MANUFACTURER FOR
INFORMATION ON THE PROPER PAINTING PROCEDURES.

3.3 Engine Exhaust System

Inboard/outboard engines use the exhaust system
to expel exhaust gases and cooling water. Engine
exhaust exits the rear of the boat through the ex-
haust system. The system consists of engine ex-
haust manifolds, exhaust hoses and the outdrive.
A periodic inspection of the coolant hoses, exhaust
hoses and related parts should be made to ensure
that leaks, heat deterioration or damage has not
resulted. Replace them as necessary. Refer to
the engine owner's manual for more information
on the exhaust system in your boat.
WARNING
DO NOT INHALE EXHAUST FUMES! EXHAUST CONTAINS
CARBON MONOXIDE THAT IS COLORLESS AND ODORLESS.
CARBON MONOXIDE IS A DANGEROUS GAS THAT IS
POTENTIALLY LETHAL.

3.4 Engine Cooling System

All marine engines use surface water as a cool-
ing medium. The cooling water enters the sys-
tem through a water intake in the outdrive and
is expelled through the exhaust system. Water
42
is pumped through the water inlets, circulated
through the engine block or heat exchanger, and
relinquished with the exhaust gases through the
outdrive. 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.
CAUTION
RUNNING THE ENGINE WITHOUT WATER FLOWING TO THE
WATER PUMP CAN CAUSE SERIOUS DAMAGE TO THE WATER
PUMP IMPELLER OR ENGINE. NEVER RUN THE MOTOR
WITHOUT WATER FLOWING TO THE WATER PUMP.
NOTICE:
If the boat is used in salt or badly polluted
water, engines without fresh water cooling
should be flushed after each use. Refer to
the engine owner's manual for the proper
engine flushing procedure.
Fresh Water Cooling (Optional on some
engines)
Your boat could be equipped with a fresh water
cooling system. Installation of a "Fresh Water"
or Closed" cooling system that is cooled by a
heat exchanger and the seawater cooling system
provides adequate engine cooling without expos-
ing the internal engine cooling system to the
harmful effects of surface water. This system is
optional with the gasoline engine on your boat.
The engine owner's manual provides additional
information regarding service and maintenance
of this equipment.
CAUTION
A RUPTURED COOLING OR EXHAUST HOSE CAN CAUSE
SEVERE ENGINE DAMAGE OR ALLOW A LARGE AMOUNT OF
WATER TO FLOW INTO THE BILGE. SHOULD AN ENGINE INTAKE,
EXHAUST OR COOLING HOSE RUPTURE, TURN THE ENGINE
OFF IMMEDIATELY. PROCEED UNDER TOW IF NECESSARY, TO
A SERVICE FACILITY FOR APPROPRIATE REPAIRS. MAINTAIN
A CLOSE VISUAL WATCH ON THE PROBLEM HOSE AND THE
BILGE WATER LEVEL.
MONTEREY
BOATS