Scout Boats 350 LXF, Owner'S Manual

Page: 17 / 166

17
Propulsion System
Your boat is equipped from the factory with coun-
ter rotating engines that are mounted to achieve
quicker planing 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. 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 typi-
cally provide optimum performance for your boat.
However there are factors that can affect perfor-
mance 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.
• 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 void if the boat is not propped
correctly. Always consult your Scout dealer
or authorized engine service dealer when
making changes to the propellers or if the
boat does not run near the top recommended
RPM.
1.7 Engine Instrumentation
The helm station is equipped with a set of engine
instruments and/or alarms. These instruments
allow the operator to monitor the operational
condition of the engines. Close observation of
these instruments allows the operator to operate
the engines at the most efficient level and could
save them from serious costly damage.
Most Scout boats are equipped with Yamaha
engines and Command Link® multifunction in -
struments. These instruments can be integrated
with the optional electronic navigation equipment
installed on your boat. A brief description of those
instruments and their basic functions are listed in
this section. Other functions that are dependent
on the electronics installed on your boat may be
available. Please refer to the Yamaha engine
and Command Link® owner’s manuals and the
manuals for the electronics installed on your boat
for detailed information on the operation of the
instruments and additional functions available.
The instrumentation is unique to the type of out-
board motors installed on your Scout.
Some or all of the following gauges may be
present.
Tachometers
The tachometers display the speed of the engines
in revolutions per minute (RPM). This speed is
not the boat speed or necessarily the speed of the
propeller. Analog tachometers may not register
zero with the key in the OFF position.
Yamaha Command Link Plus Display