Scout Boats 222 Abaco, Руководство пользователя

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Note: Before changing propellers to correct boat perfor-
mance problems, be sure other factors such as en-
gine tuning, bottom and running gear growth, etc.
are not the source of performance changes. Always
be sure the load conditions are those normally ex-
perienced before changing propellers.
Your boat was shipped with a propeller that typically pro-
vides optimum performance for your boat. However there
are factors that can affect performance and propeller require-
ments. Some are as follows:
• The addition of heavy equipment like life rafts, additional
coolers, etc., will cause additional load on the engines.
Consequently, different propellers may be required.
• 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 propeller, there is a
good chance the propeller is not the problem.
• Boats operated at high altitudes (above 2000 feet).
Engines operated at high altitudes will not be able to
develop as much horse power as they do at or near sea
level. Consequently, a different propeller may be required.
• The addition of bottom paint to the hull can create friction
on the running surface that can slow the boat enough to
affect engine RPM. In some situations, a different
propeller may be required. Always verify the top engine
RPM after applying bottom paint.
1.7 Engine Instrumentation
The helm station is equipped with a set of engine instruments
and/or alarms. These instruments allow the operator to moni-
tor the operational condition of the engine. Close observa-
tion of these instruments allows the operator to operate the
engine at the most efficient level and could save them from
serious costly damage. The instrumentation is unique to the
type of outboard motor installed on your Scout. Some or all
of the following gauges may be present.
Note: Most Scout boats are equipped with Yamaha en-
gines and multifunction instruments. A brief de-
scription of those instruments and their function
is listed in this section. Please refer to the Yamaha
engine owner’s manual for detailed information
on the operation of the instruments.
Tachometer
The tachometer displays the speed of the engine in revolu-
tions per minute (RPM). This speed is not the boat speed or
necessarily the speed of the propeller. The tachometer may
not register zero with the key in the “OFF” position.
Most Yamaha tachometers also contain the engine trim meter,
oil level indicator and the overheat warning indicator.
NEVER EXCEED THE MAXIMUM RECOMMENDED
OPERATION RPM OF THE ENGINE. MAINTAINING
MAXIMUM, OR CLOSE TO MAXIMUM RPM FOR
EXTENDED PERIODS CAN REDUCE THE LIFE OF
THE ENGINE.
Speedometer
The speedometer indicates the speed of the boat in miles per
hour. Most speedometers measure the water pressure against
a small hole in a pickup tube located in the engine lower unit
or mounted on the bottom of the transom. Yamaha multi-
function speedometers also contain the fuel meter and low
fuel warning light, a trip meter, a clock, and a voltmeter.
Yamaha Saltwater Series Propeller
Typical Yamaha Engine Instrumentation (Sportfish)