check engine YAMAHA FX 2003 Owners Manual

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Do not attempt to modify this watercraft!
Modifications to your watercraft may
reduce safety and reliability, and render
the watercraft unsafe or illegal for use.

Attach the engine shut-off cord (lanyard)
to wrist and keep it free from the handle-
bars so that the engine stops if the opera-
tor falls off. After riding, remove the
engine shut-off cord from the watercraft to
avoid accidental starting or unauthorized
use by children or others.

Scan carefully for swimmers and stay
away from swimming areas. Swimmers
are hard to see and you could acciden-
tally hit someone in the water.

Avoid being hit by another boat! You
should always take the responsibility to
watch for traffic; other boaters may not be
watching for you. If they do not see you,
or you maneuver more quickly than other
boaters expect, you risk a collision.

Maintain a safe distance from other boats
or watercraft, and also watch for boats’ ski
ropes or fishing lines. Obey the “Safe
boating rules,” and be sure to check
behind you before making a turn. (See
Safe boating rules on page 1-19.)
EJU01382
Recommended equipment
The following items should be carried on
board your watercraft:

Sound-signaling device
You should carry a whistle or other sound-
signaling device that can be used to sig-
nal other boats.

Visual distress signals
It is recommended that an authority-
approved pyrotechnic device be stored in
a waterproof container on your watercraft.
A mirror can also be used as an emer-
gency signal. Contact your Yamaha
dealer for more information.

Watch
A watch is helpful so you will know how
long you have been operating.

Towline
A towline can be used to tow a disabled
watercraft in an emergency.
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1Quick Shift Trim System (QSTS) selector
Use to select the trim angle of the watercraft.
2QSTS shift lock lever
3Start switch
Push to start the engine.
4Engine shut-off switch
Remove the clip to stop the engine and dis-
able it from starting.
5Clip
Insert into the engine shut-off switch to enable
starting of the engine.
Remove to stop the engine or prevent acci-
dental star ting of the engine or unauthorized
use of the watercraft.
6Adjustable rearview mirrors7Multifunction meter
Use to check watercraft operation.
8Shift lever
Use to put the watercraft into forward or
reverse.
9Throttle lever
Use to accelerate and decelerate.
0Tilt lever
Use to adjust the tilt of the handlebars.
AGlove compartment
BEngine stop switch
Push to stop the engine normally.
CEngine shut-off cord (lanyard)
Attach to wrist so that the engine stops if the
operator falls off the watercraft.
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EJU01861
Start switch
Push the start switch 1 (green button) to
start the engine.
NOTE:@ The engine will not start when the clip is
removed from the engine shut-off switch or if
the throttle lever is squeezed.
EJU01784
Cooling water pilot outlet
This watercraft is equipped with cooling
water pilot outlets.
When the engine is running, cooling
water is circulated in the engine, and then it
is discharged from the pilot outlets.
To check for proper operation of the cool-
ing system, check that water is being dis-
charged from the port (left) pilot outlet. If
water is not being discharged from this out-
let, cooling water may not be circulating in
the engine. When this occurs, stop the
engine and check for the cause. (See pages
2-19 and 5-3 for further instructions.)
NOTE:@
If the cooling water passages are dry, it
will take about 60 seconds for the water to
reach the outlet after the engine is
started.

Water discharge may not be constant at
idle, therefore, open the throttle a little to
check that water discharges properly.

Water discharge may not be constant at
the starboard (right) pilot outlet, however,
if it is constant at the port (left) pilot outlet,
the cooling system is operating normally.
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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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EJU01787
Tachometer
The engine speed (r/min) is displayed by
segments. Each segment indicates a 250 r/min
increment.
EJU01788
Speedometer
The meter shows the watercraft speed
against water.
NOTE:@ To switch the speedometer display between
kilometers and miles, push the speedometer
display select switch 1 for at least 2 seconds.
EJU01789
Fuel meter
The fuel meter is provided for convenient
fuel level checking while riding. The fuel
meter has eight segments which show the
amount of fuel remaining in the fuel tank.
NOTE:@ The fuel level is most accurate when the
watercraft is sitting level on a trailer or in the
water.
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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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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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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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EJU01040
OPERATION
Fuel and oil ............................................... 3-1
Gasoline ................................................. 3-1
Engine oil ................................................ 3-3
Filling the fuel tank ................................. 3-4
Pre-operation checks .............................. 3-5
Pre-operation check list ......................... 3-5
Pre-operation check points .................... 3-6
Operation ................................................ 3-16
Engine break-in .................................... 3-16
Launching the watercraft ..................... 3-17
Starting the engine ............................... 3-18
Stopping the engine ............................. 3-20
Leaving the watercraft ......................... 3-20
Operating your watercraft .................... 3-21
Getting to know your watercraft ........... 3-21
Learning to operate your watercraft .... 3-21
Riding watercraft with passengers ...... 3-22
Starting the watercraft .......................... 3-23
Boarding and starting in deep water ... 3-25
Capsized watercraft ............................. 3-27
Turning the watercraft .......................... 3-29
Stopping the watercraft ........................ 3-31
Beaching the watercraft ....................... 3-32
Docking the watercraft ......................... 3-32
Reverse on waterways ........................ 3-33
Rough water operation ........................ 3-33
Post-operation checks ......................... 3-34
Transporting .......................................... 3-36
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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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