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Features and functions
37
EJU34980“WARNING” indicator light
The “WARNING” indicator light blinks or
comes on, together with a warning indicator,
when a malfunction has occurred.
EJU34990“UNLOCK” indicator light
The “UNLOCK” indicator light comes on when
the unlock mode of the Yamaha Security Sys-
tem is selected. The watercraft can be ridden
normally when this light is on. (See page 33
for more information.)
EJU35021Left multifunction display and operation
buttons
The left multifunction display is equipped with
the following functions.
The following operation buttons are on the left
side of the multifunction information center.
1“WARNING” indicator light
1“UNLOCK” indicator light1Fuel level meter
2Fuel level warning indicator
3Hour meter/voltmeter
4Digital speedometer
5Oil pressure warning indicator
6Exhaust temperature warning indicator
7Check engine warning indicator
8Engine overheat warning indicator
1“Speed/RPM” button
2“Volt/Hour” button
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Features and functions
40
EJU35122Oil pressure warning indicator
If the oil pressure does not rise to specifica-
tion, the “WARNING” indicator light and the oil
pressure warning indicator begin to blink, and
the buzzer sounds intermittently. At the same
time, the engine speed is limited to help pre-
vent damage.
If this occurs, reduce the engine speed, return
to shore, and then check the engine oil level.
(See page 53 for engine oil level checking
procedures.) If the oil level is low, add enough
engine oil to raise it to the proper level. If the
oil level is sufficient, have a Yamaha dealer
check the watercraft.
NOTE:
Press any button on the multifunction informa-
tion center to stop the buzzer.
EJU36401Engine overheat warning indicator
This model is equipped with an engine over-
heat warning system.
If the engine starts to overheat, the engine
overheat warning system will be activated
and, in some cases, the warning system will
cut the ignition to the engine.
If the “WARNING” indicator light and the en-
gine overheat warning indicator begin to blink,
and the buzzer sounds intermittently, immedi-ately reduce the engine speed and return to
shore.
If the “WARNING” indicator light and the en-
gine overheat warning indicator come on, and
the buzzer sounds continuously, the warning
system will cut the ignition. The engine cannot
be started until it cools down, so it may be
necessary to have the watercraft towed back
to the shore. (See “Towing the watercraft” on
page 97 for towing procedures.)
After the engine cools down, start the engine,
and then check for water discharge at the port
(left) cooling water pilot outlet while the engine
is running. If there is no discharge of water,
shut the engine off, and then check the intake
grate and impeller for clogging.
WARNING
EWJ00050
Before attempting to remove weeds or de-
bris from the intake grate or impeller, shut
the engine off and remove the clip from the
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Page 60 of 108

Operation
53
EJU32280Pre-operation check points EJU32330Engine compartment
Ventilate the engine compartment before
each use.
To ventilate the engine compartment, remove
the seats. (See page 24 for seat removal and
installation procedures.) Leave the engine
compartment open for a few minutes to allow
any fuel vapors to escape.
While the engine compartment is open, check
for loose electrical connections.
WARNING
EWJ00460
Failure to ventilate the engine compart-
ment could result in a fire or explosion. Do
not start the engine if there is a fuel leak or
a loose electrical connection.
EJU32350Hull and deck
Check the hull and deck for cracks and other
damage. If any damage is found, have a
Yamaha dealer repair the watercraft.
EJU32380Fuel level
Check the fuel system for leakage, cracks,
and malfunctions before each use. (See page
83 for check points and correct procedures.)
(1) Remove the fuel tank filler cap to release
any pressure that might have built up in
the fuel tank.(2) Remove the seats. (See page 24 for seat
removal and installation procedures.)
(3) Check the fuel level in the fuel tank and
replenish if necessary. (See page 50 for
filling procedures.)
(4) Install the fuel tank filler cap and the
seats.
EJU32411Engine oil level
Check the engine oil level before each use.
CAUTION:
ECJ00390
When checking the engine oil level on
water, be careful of other watercraft,
boats, swimmers, and obstacles. The
water current and wind can cause the
watercraft to move and lead to a colli-
sion.
When checking the engine oil level on
land, supply water to the cooling water
passages. (See page 76 for procedures
on supplying water.)
Make sure that the engine has enough
oil, but do not overfill it. If there is too lit-
tle oil, the engine can be damaged. If
there is too much oil, the air filter can be-
come saturated with oil, permanently
damaging the filter and reducing engine
performance. Follow the checking pro-
cedure carefully.
Make sure that debris and water do not
enter the oil tank filler hole. Debris and
water in the engine oil can cause serious
engine damage.
To check the engine oil level:
(1) Place the watercraft in a horizontal posi-
tion or launch the watercraft, and then
start the engine.
(2) Run the engine at trolling speed for 6 min-
utes or more, and then stop the engine.
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Trouble recovery
93
Engine runs irregu-
larly or stallsFuel Empty Refill as soon as pos-
sible50
Stale or contaminat-
edHave serviced by
Yamaha dealer83
Fuel tank Water or dirt present Have serviced by
Yamaha dealer83
Spark plug Fouled or defective Replace 86
Incorrect heat range Replace 86
Gap incorrect Adjust 86
Spark plug
capLoose Connect properly 86
Cracked, torn, or
damagedReplace
—
Electrical wir-
ingLoose connection Tighten or connect
properly—
Fuel injec-
tion systemFaulty or clogged in-
jectorsHave serviced by
Yamaha dealer—
Warning light or in-
dicator blinksFuel level Empty Refill as soon as pos-
sible50
Engine over-
heatedJet intake clogged Clean
94
Exhaust gas
temperatureGas temperature is
too highCool down engine
41
Check engine
warningFaulty sensors Have serviced by
Yamaha dealer41
Watercraft slow or
loses powerCavitation Jet intake clogged Clean 94
Impeller damaged or
wornHave serviced by
Yamaha dealer94
Engine over-
heat warningEngine speed reduc-
tion control activatedClean jet intake and
cool engine40
Oil pressure
warningEngine speed reduc-
tion control activatedAdd oil
40
Spark plug Fouled or defective Replace 86
Incorrect heat range Replace 86
Gap incorrect Adjust 86
Spark plug
capsLoose Connect properly
86
Electrical wir-
ingLoose connection Tighten or connect
properly—
Fuel Stale or contaminat-
edHave serviced by
Yamaha dealer83
Air filter Clogged Clean or replace 84
Oil buildup Replace 84 TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF1X71E0.book Page 93 Tuesday, September 26, 2006 9:52 AM