Page 42 of 130
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EJU19940
Yamaha Engine Management
System (YEMS)
This model is equipped with an inte-
grated, computerized management system
that controls and adjusts ignition timing, fuel
injection, engine diagnostics, and the Off-
Throttle Steering (OTS) system.
EJU01786
Multifunction meter
This meter contains the following func-
tions for help and convenience in operating
the watercraft.
1
Tachometer
2
Hour meter/Voltmeter
3
Speedometer
4
Fuel meter
5
Fuel warning indicator
6
Engine overheat warning indicator
7
Speedometer display select switch
8
Hour meter/Voltmeter display select switch
9
Check engine warning indicator
0
Oil pressure warning indicator
CAUTION:@ Do not run the engine for more than
15 seconds when checking the operation
of the meter on land. The engine could
overheat.
NOTE:@ When the engine is started, all displays
light up for 2 seconds and the buzzer
sounds 2 times. Then, the meter starts to
operate normally.
The current display will continue to oper-
ate for 25 seconds after the engine stops.
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Page 44 of 130
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EJU01790
Hour meter/Voltmeter
NOTE:@ To switch the display between the hour
meter and voltmeter, push the hour meter/
voltmeter display select switch 1 for at least
2 seconds.
Hour meter
The hour meter is provided to make it
easy to follow the maintenance schedule.
The meter shows the hours of engine
operation that have elapsed since the water-
craft was new.
Vo l t m e t e r
The voltmeter is provided to display the
voltage of the battery.
The voltmeter displays 12 volts or more
when the battery voltage is within specifica-
tion.
If the voltage displayed is low, beach the
watercraft and, if necessary, have a Yamaha
dealer check the charging system.
EJU01791
Check engine warning indicator
If a sensor malfunction or a short circuit is
detected, the warning indicator begins to
blink and the buzzer sounds intermittently.
If this occurs, reduce the engine speed,
beach the watercraft, and have a Yamaha
dealer check the engine.
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Page 45 of 130
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EJU01792
Fuel warning indicator
If the fuel remaining in the tank drops to
about 13 L (3.4 US gal, 2.9 Imp gal), the
lowest fuel level segment and the fuel warn-
ing indicator begin to blink, and the buzzer
sounds intermittently.
If this occurs, fill the fuel tank at the first
opportunity.
EJU01793
Oil pressure warning indicator
If the oil pressure does not rise to specifi-
cation, the oil pressure warning indicator
come on and the buzzer begins to sound
continuously. At the same time, the engine
speed reduction control is activated.
If this occurs, reduce the engine speed,
beach the watercraft, and have a Yamaha
dealer check the oil pressure.
NOTE:@ Press any button on the multifunction meter
to stop the buzzer.
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Page 46 of 130
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EJU01794
Engine overheat warning indicator
This model is equipped with an engine
overheat warning system.
If the engine starts to overheat, the over-
heat warning indicator blinks for 5 seconds,
and then it comes on. The buzzer also
begins to sound intermittently, and then it
sounds continuously. At the same time, the
engine speed reduction control is activated
when the engine runs over 3,000 r/min.
If this occurs, immediately reduce the
engine speed and beach the watercraft, and
check for water discharge at the port (left)
cooling water pilot outlet. If there is no dis-
charge of water, check the intake grate and
impeller for clogging.
WARNING@ Before attempting to remove weeds or
debris from the intake grate or impeller,
shut the engine off and remove the clip
from the engine shut-off switch. Severe
injury or death could result from coming
in contact with the rotating parts of the
jet pump.
CAUTION:@ If you cannot locate and correct the
cause of the overheating, consult a
Yamaha dealer. Continuing to operate at
higher speeds could result in severe
engine damage.
NOTE:@ Press any button on the multifunction meter
to stop the buzzer.
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Page 50 of 130
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EJU01798
Fuel and oil
This watercraft is equipped with a
4-stroke engine. Conventional 2-stroke
engine oil cannot be used.
The engine utilizes an electronic fuel
injection system to deliver the optimal air-
fuel mixture ratio required by the engine.
With optimal combustion conditions, this
system is able to increase startability and
improve fuel economy.
EJU19112
Gasoline
WARNING@ GASOLINE AND ITS VAPORS ARE
HIGHLY FLAMMABLE AND EXPLOSIVE!
Do not smoke when refueling, and
keep away from sparks, flames, or
other sources of ignition.
Stop engine before refueling.
Refuel in a well-ventilated area with
the watercraft in a horizontal position.
Do not stand or sit on the watercraft
while refueling in case of fire.
Take care not to spill gasoline. If gaso-
line spills, wipe it up immediately with
dry rags. Always properly dispose of
gasoline-soaked rags.
Avoid overfilling the fuel tank. Stop fill-
ing when the fuel level reaches approx-
imately 50 mm (2 in) from the top of the
fuel tank. Fuel expands as it warms up
and could overflow if the fuel tank has
been overfilled. If temporarily leaving
the watercraft with a full fuel tank, do
not leave it in direct sunlight. Leave it
in a well-ventilated area with the water-
craft in a horizontal position.
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Page 54 of 130
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EJU01346
Pre-operation checks
EJU01347
Pre-operation check list
Before operating this watercraft, perform the checks in the following check list. See the
accompanying text in this chapter for details on how to perform the checks.
WARNING@ If any item in the pre-operation check list is not working properly, have it inspected
and repaired before operating the watercraft, otherwise an accident could occur.
@
NOTE:@ Pre-operation checks should be made thoroughly each time the watercraft is used. This pro-
cedure can be completed in a short time. It is worth the time spent to assure safety and reli-
ability.
@
ITEM ROUTINE PAGE
Engine compartment Remove all seats to ventilate engine compart-
ment. Check for fuel vapors or loose electrical
connections3-6
Bilge Check for water and fuel residue and remove if
necessary3-9
Throttle Check that the throttle lever springs back 3-12
Steering system Check for proper steering system operation 3-12
Shift lever and reverse gate Check for proper operation 3-13
Fuel Check fuel level and add if necessary
Check hoses and tank for leakage3-6
Engine oil Check oil level and add if necessary 3-7
Water separator Check for water and drain if necessary 3-8
Battery Check electrolyte level and battery condition 3-10
Front and rear seats Check that the seats are properly secured 2-5, 6
Hull/Deck Check the hull and deck for cracks or other dam-
age—
Jet unit Check for debris and remove if necessary 3-14
Fire extinguisher Check the condition and replace if necessary 3-11
Engine shut-off cord Check condition and replace is frayed or broken 3-14
Switches Check the start switch, engine stop switch and
engine shut-off switch for proper operation when
the watercraft is in the water3-15
Cooling water pilot outlet Check that water is discharged while the engine
is running and the watercraft is in the water3-15
Multifunction meter Check for warning indications and proper opera-
tion3-15
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EJU01048
Pre-operation check points
EJU01878
Engine compartment
Ventilate the engine compar tment before
each use.
To ventilate the engine compartment
remove the rear and front seats. (See pages
2-5 and 2-6 for seat removal and installation
procedures.) Allow the engine compartment
to remain open for a few minutes to allow
any fuel vapors to escape. Also, check for
loose electrical connections.
WARNING@ Failure to ventilate the engine compart-
ment could result in fire or explosion. Do
not start the engine if there is a fuel leak
or a loose electrical connection.
EJU01802
Fuel level
Check the fuel system for leakage, cracks
or malfunctions before each use. (See page
4-10 for check points and correct proce-
dures.)
1. Remove the fuel tank filler cap to release
any pressure that might have built up in
the fuel tank.
2. Remove the rear and front seats. (See
pages 2-5 and 2-6 for seat removal and
installation procedures.)
3. Check the fuel level in the tank and
replenish if necessary. (See page 3-4 for
filling instructions.)
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Page 59 of 130
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EJU01969
Battery
Check the battery condition and the elec-
trolyte level.
Check that the battery leads are tightened
securely and there is no corrosion on the
battery terminals.
WARNING@ The battery must always be fully
charged and in good condition. Loss
of battery power may leave you
stranded. Never operate the watercraft
if the battery does not have sufficient
power to start the engine or if it shows
any other signs of decreased power.
Be sure to connect the breather hose
to the battery. Fire or explosion could
result if the breather hose is damaged,
obstructed, or not connected properly.
@
Make sure that the battery is securely
held in place.
1
Positive (+): Red lead
2
Negative (–): Black lead
3
Breather hose
UF1B71.book Page 10 Tuesday, November 12, 2002 4:17 PM
