Engines and Transmissions
11.5
11.3 Operations and Maintenance
In the Underway Chapter, (Chapter 12) you will find
instructions on starting your engines. Also detailed in the
manufacturer’s documentation supplied with your boat,
you will find instructions on maintenance items that you
may perform yourself. Should you have any questions
regarding maintenance or operations not provided, be
sure and consult your boat dealer.
Important: Shift the transmission only when the engine speed
is at or below 1000 rpm. Shifting at higher engine speeds could
severely damage the boat, the transmission, and the engine.
Allow the transmission to remain in neutral for a few seconds
before reversing the rotation of the propeller.
11.3.1 Hydrolock
Hydrolock is caused by water entering the engine cylin-
ders through the exhaust. The following conditions can
cause hydrolock.
Engine shutdown: A sudden engine shutdown while the
boat is moving may force water into the exhaust system.
Anchored or adrift: Rough seas may cause rocking
severe enough to cause water to splash out of the muf-
flers into the engine while the engines are shut down,
anchored from the stern, pulling a sea anchor, or adrift.
Improper hoisting: Operators are sometimes tempted to
reduce hoisting time for propeller changes by hoisting only
the boat stern. Such hoisting can cause residual water in
the exhaust system to enter the engine cylinders.
Engine manufacturers do not warranty items dam-
aged by hydrolock.
11.3.2 Engine / Generator Exhaust
Your engine exhaust contains Carbon Monoxide! Be
sure and read the Boating Safety Chapter and know
the dangers and how to avoid them. Carbon Monoxide
will kill you, and in most situations, by the time you
know something is wrong it could be too late. Know
what to look for and what to do in case of neces-
sary action. Inspect your boat’s exhaust system fre-
quently, or have a qualified service technician ser-
vice the system to ensure that there are no leaks.
Always ensure the exhaust clamps are tightened,,
throughout the system.
Keep the necessary tools to perform this action on
hand.
Avoid the exhaust outlets, lines, hoses or equipment
when the engines have been run for a period of time.
These areas may be very hot! You can be seriously
burned by the exhaust system after the engines
have ran for a period of time. Allow the exhaust sys-
tem to cool, before handling, or making adjustments
to avoid injury.
To Next Page
Loading...
