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them. (The manifolds are on the upper side of the engine on both

sides.) Engine operation will result in the manifolds becoming very

hot, and touching could result in burns to the skin.

Engines equipped with catalyst exhaust
manifolds may produce an unusual
odor. This is typical of engines with a

catalytic converter exhaust system. If you are uncertain about
any odor, do not hesitate to contact an authorized Malibu dealer
for assistance in determining the cause and potential for concern.

The boat is also equipped with a natural air-intake that forces air

through a ventilation system on the deck of the boat. This channels

air from the bilge to the transom vent.

With proper maintenance, which is the responsibility of the boat

owner and/or operator, the ventilation system works efficiently and

protects the people on-board from dangerous fumes. Follow the

maintenance requirements as indicated in the

Care and Maintenance

section of this manual.

DO NOT allow the ventilation intake
to be covered up by towels, swim
paraphernalia or any other item that

potentially restricts the inflow of air for the proper ventilation

of the blower system. Such restrictions can result in the

Exhaust System

Always operate the blower for several
minutes (at least four minutes) prior
to starting the engine, running at a low

speed or at idle. (Malibu boats are equipped with an automatic
shut-off when the automatic blower system has operated prior
to starting the engine.) This must be done with the engine
compartment open. Failure to perform this necessary function
could result in an explosion of the accumulated fumes within the
compartment, resulting in serious injury or death.

Always operate the blower for the required four minutes prior to

starting the engine, ensuring the engine compartment is open. This

should also be done when idling or running at low speed. This allows

the disbursing of fumes that otherwise allowed to accumulate could

result in an explosion.

The blower is controlled from the command center. (See

Dashes

and Video Screens section of this manual for more detail on how

to operate the system.)

The blower should come ON automatically

when the system is first powered up. However, operators should

always verify that the blower is ON and operating rather than relying

on the automatic ON.

Although the Malibu fuel system works very efficiently, there

will always be some gaseous by-product as a result of operating

an internal-combustion engine. These gases, along with the water

used to cool the engine (in addition to the closed cooling system) are

routed out of the boat by way of the exhaust manifolds on each side

of the engine, and it is expelled out of the system at the transom.

Never allow anyone to be on the swim
platform, transom seating or sun pads
when the engine is running. Carbon

monoxide fumes are colorless and odorless. Illness and death
can result from breathing fumes, even before a person is aware
of breathing them. See the Safety section of this manual for more
information regarding this critical matter.

Although much of the exhaust is dispersed into and through the

water, fumes still reach the swim platform and transom area of the

boat, including the sun pads. Therefore, no one should ever be on

the swim platform, transom seating or sun pads when the engine is

operating.

Always allow the exhaust manifolds to cool before touching

Coolant Requirements

In the closed cooling system, verify that there is sufficient

coolant/water in the system. (Coolant and water may be required to

be mixed, depending on the brand of coolant, most likely in a 50/50

mix.) Because a closed cooling system retains and recirculates

coolant an additional step prior to every outing is necessary: Before

starting the engine, while it is still cool to the touch and does not

burn skin, check the coolant reservoir level. The instructions for this

critical step are explained in the Care and Maintenance section of

this manual.

NEVER use ethylene glycol or Dex-
Cool antifreeze coolant. These types
of coolants are not formulated for

the requirements of the Malibu Monsoon engine. NEVER mix
the approved propylene glycol coolant with any other type of
coolant, including ethylene glycol or Dex-Cool, even in small
amounts. In fact, these different formulations do NOT mix and
will not provide the required cooling protection for the Malibu

Monsoon engine. Mixing coolants has the potential to damage
the cooling system.

Malibu recommends using Peak Sierra Brand, 5-Year, 100,000-

mile Marine Grade Coolant in a 50/50 mix with distilled water to

keep the warranty in effect. Peak Sierra is an environmentally

friendly coolant.

While some evaporation occurs naturally, it should not occur at

an accelerated rate. If a closed cooling tank has significantly lost

coolant, especially if it is nearly empty, a potentially serious issue

exists. Present the boat to an authorized Malibu dealer for analysis

and correction, prior to starting the engine.

Coolant should be flushed from the

system and fully replaced every three
years or 1200 hours on the engine,