2003 YAMAHA FX fuel

2-18
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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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3
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
UF1B71.book Page 1 Tuesday, November 12, 2002 4:17 PM

3-1
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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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Tighten the filler cap securely after
refueling.

If you should swallow some gasoline,
inhale a lot of gasoline vapor, or get
gasoline in your eyes, get immediate
medical attention.

If any gasoline spills onto your skin,
immediately wash with soap and
water. Change clothing if gasoline
spills on it.
@
CAUTION:@ Use only fresh gasoline that has been
stored in clean containers.
@
EJU01832
Gasohol
There are two types of gasohol: gasohol
containing ethanol and that containing meth-
anol.
Gasohol containing ethanol can be used
if ethanol content does not exceed 10% and
the fuel meets minimum octane ratings.
Gasohol containing methanol is not rec-
ommended by Yamaha because it can
cause fuel system damage or engine perfor-
mance problems.Recommended gasoline:
Regular unleaded gasoline with
a minimum octane rating of
86 (Pump octane number) = (R+M)/2
90 (Research octane number)
UF1B71.book Page 2 Tuesday, November 12, 2002 4:17 PM

3-4
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EJU18001
Filling the fuel tank
CAUTION:@ Be careful when refueling. Avoid getting
water or other contaminants in the fuel
tank. Contaminated fuel can cause poor
running or engine damage.
@
1. Remove the rear and front seats. (See
pages 2-5 and 2-6 for seat removal and
installation procedures.)
2. Open the fuel tank filler cap, and slowly
add fuel to the fuel tank.
3. Stop filling when the fuel level reaches
approximately 50 mm (2 in) from the top
of the fuel tank as indicated a in the
illustration.
Fuel tank capacity:
Total: 70.0 L (18.5 US gal, 15.4 Imp gal)
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3-5
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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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3-8
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Checking the engine oil level again:
1. Launch the watercraft, and then start the
engine.
2. Run the engine at 7,000 r/min for
5 minutes or more and at trolling speed
for 2–3 minutes, and then turn the
engine off.
3. Remove the oil tank filler cap, wipe the
dipstick clean, insert it back into the filler
hole, and then remove it again to check
the oil level.
4. If the engine oil is below the minimum
level mark, add sufficient oil of the rec-
ommended type to raise it to the correct
level. If the engine oil is above the maxi-
mum level mark 3, extract sufficient oil
to lower it to the correct level.
NOTE:@
The engine oil should be between the
minimum and maximum level marks.

To check the engine oil level accurately,
be sure to adequately warm the engine
up.
@
EJU01961
Water separator
Check the water separator 1 for water.
Normally the water separator is empty. The
water separator retains any water entering
through the fuel tank breather hose if the
watercraft is capsized.
If water remains in the water separator,
drain it by removing the drain screw 2.
Place a drain pan under the water separator
to catch the draining water or use a dry cloth
to soak up any water that could spill into the
watercraft. If any water spills into the water-
craft, be sure to wipe it up with a dry cloth.
Be sure to install the drain screw after drain-
ing the water separator.
UF1B71.book Page 8 Tuesday, November 12, 2002 4:17 PM