Malibu Boats 2011 21 Ride, Owner'S Manual, Page: 82 / 170

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Exhaust
The exhaust system is used to remove engine exhaust fumes. To ensure that your boat’s
exhaust system is working correctly, it is important that you inspect for exhaust leaks.
The following information will allow you to check these systems. Keep in mind that you
will be checking engine while turned on, and that you will need to take safeguards against
getting yourself or others caught in the moving parts. Use extreme caution while
performing this task.
• Turn engine off and disconnect the engine safety switch. Be sure the throttle
shift control is neutral. The engine must be cool.
• Open the engine and visually check the exhaust system from the engine to the
transom for obvious damage.
• Reinstall engine safety switch and start the engine with engine compartment open.
Check hose connections between the exhaust manifolds and the muffler for leakage.
• If leakage is apparent, tighten the hose clamps, being careful not to crimp the hose.
See your Malibu dealer for parts and or service.
Notice
: The 2011 Monsoon and L96 engines equipped with the ETX
Catalyst Exhaust Manifolds may produce an unusual smell
which is characteristic of an engine with a catalyst exhaust
system.
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