Everglades 455 CC, Owner'S Manual

Page: 41 / 200

41
Propulsion System
by two numbers stamped on the prop in sequence.
The 1st number in the sequence (example 14” x
21”) is the diameter of the propeller and the 2nd
number is the pitch. Pitch is the theoretical dis-
tance traveled by the propeller in each revolution.
Always repair or replace a propeller immediately if it
has been damaged. A damaged and therefore out
of balance propeller can cause vibration that can be
felt in the boat and could damage the engine gear
assembly. Refer to the engine owner’s manual for
information on propeller removal and installation.
3.7 Performance Issues & Propellers
It is extremely important that the boat is propped
to run at or very near the recommended top RPM
with an average load. If the top RPM is above or
below the recommend range, the propellers must
be changed to prevent loss of performance and
possible engine damage.
Your boat is equipped from the factory with coun-
ter rotating engines that are mounted to achieve
quicker planning and optimum performance.
Therefore, the left rotation engine is mounted on
the port side of the transom and the right rotation
engine is mounted on the starboard side. On boats
equipped with quad engines, the port center engine
is typically a right rotation and the starboard center
engine is a left rotation. You should make sure that
each propeller matches the rotation of the engine.
Notice:
Before changing propellers to correct boat
performance problems, be sure other factors
such as engine tuning, bottom and running
gear growth, etc. are not the source of per-
formance changes. Always be sure the load
conditions are those normally experienced,
before changing propellers.
Your boat was shipped with propellers that typically
provide optimum performance for your boat. How-
ever there are factors that can affect performance
and propeller requirements.
Some are as follows:
• You should be sure the load conditions are
those normally experienced. If the boat ran
in the required RPM range when it was new
and you have not added any additional gear or
heavy equipment and have not damaged the
propellers, there is a good chance the propellers
are not the problem.
Typical Quad Engine & Propeller Rotation
Note that the engine rotation on your boat may be different,
depending on the engines installed.
Yamaha Saltwater Series Propeller
• The addition of heavy equipment like a tower,
life rafts, additional coolers, etc., will cause
additional load on the engines. Consequently,
different propellers may be required.
• Boats operated at high altitudes (above 2000
feet). Engines operated at high altitudes will not
be able to develop as much horsepower as they
do at or near sea level. Consequently, different
propellers may be required.
Notice:
Outboard engines can be damaged and the
warranty voided if the boat is not propped cor-
rectly. Always consult your Everglades dealer
or authorized engine service dealer when
making changes to the propellers or if the boat
does not run near the top recommended RPM.