Owner`s manual

2-13
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
dealer check the engine oil pres-
sure.
NOTE: All three warning indicators
blink when the No-Wake Mode system
is engaged (see page 2-15).
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.
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.
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.
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.
FEATURES & FUNCTIONS 2
CAUTION:
1
10
20
30
35
40
45
50
55
60
1
2
3
4
5
6
7
8
9
10
11
RPM
x 1000
MPH
1
2
3
4
5
6
7
8
9
10
11
RPM
x 1000