Overheat Warning System - Yamaha AR230 Owner's/Operator's Manual

*AR230(SRT1000)-'04-OwnMnl 11/10/03 11:26 AM Page 2-12
2
F & F
EATURES UNCTIONS
reduce the value. Press and release
either key to change the value in 1-
foot increments. Press and hold the
key to change the value in 9-foot
increments per second.
3) After your selection is made, the
display will return to normal opera-
tion after 5 seconds.
4) The Alarm indicator and Shallow
Alarm indicator will now be present.
Setting the Deep Alarm
The Deep Alarm function can be set for
depths ranging from 3 to 199 feet (1 to
60.3 meters). When the depth is more
than the chosen setting, the alarm is
triggered. The alarm sounds an audible
"alarm" for 10 seconds while flashing
the Warning LED, as well as the Alarm
indicator and the Deep Alarm Indicator
on the display.
After 10 seconds the audible alarm
mutes and the Warning LED and the
indicators continue to blink until the
depth decreases, or the alarm is reset.
NOTE: Set the Deep Alarm function
each time you wish to use it. The
gauge does not retain the setting after
the main switch is turned off.
1) Press the "DOWN" key located on
the front of the display. The current
alarm setting will be displayed on
the display. "000" is the default set-
ting (no alarm function).
2) Press the "UP" key within 5 seconds
to increase the selected value
(more water depth). Press the
"DOWN" key to reduce the value.
Press and release either key to
change the value in 1-foot incre-
ments. Press and hold the key to
change the value in 9-foot incre-
ments per second.
3) After your selection is made, the
unit will return to normal operation
after 5 seconds.
4) The Alarm indicator and Deep Alarm
indicator will now be present.
5. Warning Indicators
There are three warning indicators
in each tachometer to alert you
about certain conditions on your
Sport Boat. These warnings corre-
spond to the engine monitored by
the tachometer.
Check Engine – If a sensor mal-
function or a short circuit is detect-
ed, the warning indicator will come
on. If this occurs, reduce engine
speed and return to shore. Have a
Yamaha dealer check the engine
and circuits.
Engine Overheat – This model is
equipped with an engine overheat
warning system. See the following
section for an explanation.
Oil Pressure – If oil pressure does
not rise to specification, the oil pres-
sure warning indicator comes on. At
the same time, engine speed reduc-
tion control is activated, limiting
maximum speed to 3000 rpm. If this
occurs, reduce engine speed and
return to shore. Have a Yamaha
2-12
dealer check the engine oil pres-
sure.
40 45
35 MPH 50
5 6 30 5 6
4 7 4 7
RPM 8 55 3 RPM 8
3 x 1000 20 x 1000
2 9 10 60 2 9
10
1 10 1
11 11

OVERHEAT WARNING SYSTEM

The engine has an overheat warning
device. If either engine starts to over-
heat, the engine speed of the affected
engine will be limited to 3000 rpm.
Each engine is equipped with cooling-
water pilot outlets 1 on the starboard
side of the hull. Check that water
comes out of the outlet while the
engine is running, particularly while
applying throttle. If you do not see any
water at the outlet, cooling water may
not be circulating in the engine.
1
NOTE: If water cooling passages on
the engines are dry, it will take about 20
seconds for water to reach the pilot out-
lets after starting.
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F & F
EATURES UNCTIONS
If water is not circulating, something
may be clogging the jet intake grate.
Refer to the Jet Pump Clean-Out pro-
cedures on page 5-5 for further infor-
mation.
CAUTION:
If the cause of overheating cannot
be found and corrected, take special
precautions to avoid major engine
damage while you return to shore.
SINGLE ENGINE OVERHEATING —
Shut off the overheating engine and
use the properly running engine to
return to shore. Operate at "no-
wake" speed to prevent water from
flooding the non-operating engine
through the cooling water intake.
BOTH ENGINES OVERHEATING —
If getting a tow from another vessel
is not possible, operate both
engines just slightly above idle
while you return to shore. If you can
be towed, refer to "Towing the Sport
Boat" on page 5-3.
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