Malibu Boats RESPONSE TXi 2021, Owner'S Manual

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90 Engines & Drive Trains | 2021 OWNER’S MANUAL
To protect the system, a sea
strainer is installed near the raw
water intake and serves the purpose
of keeping debris from entering the
cooling system, causing eventual
engine failure. As with any kind of
strainer, it is necessary to regularly
clean it so that water can flow
unimpeded.
Coolant Requirements
Verify that coolant is mixed with water 50/50. It is
suggested that you purchase a refractometer to ensure the
correct water to cooler ratio. 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 will not burn skin, check the coolant
reservoir level. The instructions for this crucial step are
explained in the Care and Maintenance section of this manual.
Malibu recommends using Sierra Brand,
5-year, 100,000-mile Marine Grade.
Coolant in a 50/50 mix with distilled water
to keep the warranty in effect. 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. Do not start
the engine. Present the boat to an authorized Malibu dealer for
analysis and correction.
The Exhaust System
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 the
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 byproduct 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 to exhaust houses between
the deck and hull, and it is expelled out of the system at the
transom.
Although much of the exhaust is disbursed into and through
the water, fumes still reach the swim platform and transom
area of the boat, including WakeView seating and 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
them. (The manifolds are on the upper side of the engine
on both sides.) Engine operation will result in the manifold
becoming very hot, and touching could result in burns to the
skin.
Always operate the blower for several minutes (at least four
minutes) prior to starting the engine, running at 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.
DANGER
!
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.
DANGER
!
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.
NOTICE
CAUTION
!
Except for the sea strainer and raw water impeller, consumers should
not attempt to inspect or repair components of the cooling system.
Most are inaccessible. All can be inadvertently damaged if not
properly accessed, often necessitating specialized tools. Attempting
unauthorized inspection or repair can void the warranty.
Coolant should be flushed from the system and fully replaced every
three years or 1200 hours on the engine, whichever comes first, and
the cooling system should routinely and carefully be checked for any
leaks.
NOTICE
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
mi and will not provide the required cooling protection for the Malibu
Monsoon engine.
NOTICE