Scout Boats 221 Winyah, Owner'S Manual

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CAUTION
CAUTION
increase in the temperature could indicate an
obstructed water inlet or an impeller failure. On
Yamaha engines the overheat warning indicator is
built into each tachometer and will start to blink
if the engine temperature is too high.
CONTINUED OPERATION OF AN OVERHEATED ENGINE
CAN RESULT IN ENGINE SEIZURE. IF AN UNUSUALLY HIGH
TEMPERATURE READING OCCURS, SHUT THE ENGINE OFF
IMMEDIATELY. THEN INVESTIGATE AND CORRECT THE
PROBLEM.
Fuel Gauge
The fuel gauge indicates the amount of fuel in
the fuel tank.
On boats equipped with Yamaha engines, the fuel
gauge is built into the Yamaha speedometer multi-
gauge. The fuel indicator on the Yamaha gauge
will begin to blink if the fuel in the monitored tank
drops too low.
Voltmeter
The voltmeter displays the voltage for the battery
and the charging system. The normal voltage is
11 to 12-volts with the engines off, and 13 to 14.5
volts with the engines running. The Yamaha
engine voltmeter is built into the speedometer.
It will begin to blink if the voltage in the battery
drops too low.
Hour Meter
The hour meter keeps a record of the operating
time for the engine.
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 con-
dition of the engine. Close observation of these
instruments allows the operator to operate the
engine at the most efficient level and could save it
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.
Notice:
Most Scout boats are equipped with Yamaha
engines and multifunction instruments. A
brief description of those instruments and
their function is listed in this section. Please
refer to the engine owner’s manual for de-
tailed information on the operation of the
instruments.
Tachometer
The tachometer displays the speed of the engine
in revolutions 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.
Yamaha tachometers also contain the engine trim
meter, oil level indicator and the overheat warn-
ing 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
speedometers also contain the fuel meter and
low fuel warning light, a trip meter, a clock, and
a voltmeter.
Overheat Warning Indicator
The temperature warning indicates that the tem-
perature of the engine is too high. A sudden
Typical Yamaha Engine Instrumentation