2007 YAMAHA SUPERJET fuel

Operation
26
to-oil ratio could result in fouled spark
plugs, smoky exhaust, and heavy car-
bon deposits.
Pour 2-stroke engine oil into a clean contain-
er, and then add gasoline. To mix them thor-
oughly, shake the container from side to side.
EJU31910Filling the fuel tank
CAUTION:
ECJ00290
Be careful when refueling. Avoid getting
water and other contaminants in the fuel
tank. Contaminated fuel can cause poor
running and engine damage.
(1) Lift the steering pole and support it with
the lock pin.
(2) Remove the hood. (See page 18 for hood
removal and installation procedures.)
(3) Remove the fuel tank filler cap, and then
slowly add the premixed fuel to the fueltank. Stop filling when the fuel level just
reaches the bottom of the filler tube.
(4) Install the fuel tank filler cap and the
hood.
NOTE:

The hood must be removed in order to view
the fuel level in the fuel tank while adding fu-
el.

Be careful not to spill fuel or overfill the fuel
tank.

Do not fill up the filler tube because fuel ex-
pands as it warms up and could overflow.
12-stroke engine oil
2Gasoline
Fuel-to-oil ratios (gasoline to oil)
Break-in period (first two tankfuls):
25 : 1
After break-in:
50 :1
Fuel tank capacity:
To t a l :
18.0 L (4.8 US gal) (4.0 Imp.gal)
Reserve:
5.5 L (1.5 US gal) (1.2 Imp.gal)
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Operation
27
EJU31980
Pre-operation checks EJU31990Pre-operation check list
Before operating this watercraft, perform the checks in the following check list. See the accom-
panying text in this chapter for details on how to perform the checks.
WARNING
EWJ00410
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 each time the watercraft is used. These checks can be
completed in a short time. It is worth the time spent to ensure safety and reliability.
ITEM ROUTINE PAGE
BEFORE LAUNCH OR OPERATION
Engine compartmentRemove the hood to ventilate the engine compart-
ment. Check for fuel vapors and loose electrical con-
nections.28
BilgeCheck for water and fuel and drain if necessary. 29
Throttle leverCheck that the throttle lever springs back smoothly. 30
Steering systemCheck for proper operation. 30
FuelCheck the fuel level and replenish if necessary.
Check the hoses and tank for leakage.28
Water separatorCheck for water and drain if necessary. 28
BatteryCheck the electrolyte level and battery condition. 29
HoodCheck that the hood is securely closed. 18
Hull and deckCheck the hull and deck for cracks and other dam-
age.28
Jet intakeCheck for debris and remove if necessary. 31
Fire extinguisherCheck the condition and replace if necessary. 29
Engine shut-off cordCheck the condition and replace if frayed or broken. 31
SwitchesCheck the start switch, engine stop switch, and en-
gine shut-off switch for proper operation.32
AFTER LAUNCH
Cooling water pilot outletCheck that water is discharged while the engine is
running and the watercraft is in the water.32
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Operation
28
EJU32280Pre-operation check points EJU32290Engine compartment
Ventilate the engine compartment before
each use.
To ventilate the engine compartment, lift the
steering pole and support it with the lock pin,
and then remove the hood. (See page 18 for
hood 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.
EJU32360Fuel system
Check the fuel system for leakage, cracks,
and malfunctions before each use. (See page
52 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 hood. (See page 18 for hood
removal and installation procedures.)
(3) Check the fuel level in the fuel tank and
replenish if necessary. (See page 26 for
filling procedures.)
(4) Install the fuel tank filler cap and the
hood.
EJU32420Water separator
Check the water separator for water. The wa-
ter separator retains any water that may have
entered through the fuel tank breather hose if
the watercraft was capsized. Normally, the
water separator is empty.
If water remains in the water separator, drain
it by removing the drain screw. Place a drain
pan under the water separator to catch the
1Water separator
2Drain screw
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Operation
29
draining water or use a dry cloth to soak up
any water that could spill into the watercraft. If
any water spills into the watercraft, be sure to
wipe it up with a dry cloth. Also, be sure to in-
stall the drain screw after draining the water
separator.
EJU32430Bilge
Check the bilge for moisture and fuel residue.
CAUTION:
ECJ00340
Excessive water in the bilge can splash
into the carburetor and engine, which can
result in severe damage.
EJU32480Battery
Check the battery condition and the electro-
lyte level.
Check that the battery leads are tightened se-
curely and that there is no corrosion on the
battery terminals.
WARNING
EWJ00450

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 bat-
tery does not have sufficient power tostart 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 re-
sult if the breather hose is damaged, ob-
structed, or not connected properly.
Make sure that the battery is securely held in
place.
EJU32500Fire extinguisher
Check that there is a full fire extinguisher on
board.
The fire extinguisher container is located on
the hood under the steering pole.
To open the fire extinguisher container:
(1) Grasp the tab, pull the band to the rear,
and then pull it up.
(2) Lift the container about 30 degrees from
the storage position.
1Positive (+) battery terminal: Red lead
2Negative (–) battery terminal: Black lead
3Breather hose
1Fire extinguisher holder and cover
2Ta b
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Operation
33
EJU32730
Operation
WARNING
EWJ00510
Before operating your watercraft, become
familiar with all of the controls. Consult a
Yamaha dealer about any control or func-
tion that you do not fully understand. Fail-
ure to understand how the controls work
could cause an accident or prevent you
from avoiding an accident.
EJU32750Engine break-in
The engine break-in period is essential to al-
low the various components of the engine to
wear and polish themselves to the correct op-
erating clearances. This ensures proper per-
formance and promotes longer component
life.
CAUTION:
ECJ00420

For the first 5 hours of operation or 2
tankfuls of fuel, premix the fuel in a fuel-
to-oil ratio of 25:1.

After break-in, premix the fuel in a fuel-
to-oil ratio of 50:1 for normal operation.
(1) Launch the watercraft, start the engine,
and then board the watercraft. (See page
33 for engine starting procedures.)
(2) Run the engine at the lowest possible
speed for 5 minutes.
(3) Gradually apply throttle to 3/4 or less.
(4) Operate the watercraft at 3/4 throttle or
less for the first tankful of fuel.
(5) Fill the fuel tank once more with fuel in a
fuel-to-oil ratio of 25:1, and then proceed
with normal operation.
CAUTION:
ECJ00430
Failure to follow the engine break-in pro-
cedure could result in reduced engine life
or even severe engine damage.
EJU32820Launching the watercraft
When launching the watercraft, make sure
that there are no obstacles around you.
After the watercraft is in the water, turn it
around so that the bow faces the direction you
wish to go. Start the engine, and then slowly
move away from the launching area. If there
are waves, someone should make sure that
the watercraft is not pushed into the trailer af-
ter launching the watercraft.
EJU32830Starting the engine
WARNING
EWJ00560
Never start the engine or let it run for any
length of time in an enclosed area. Ex-
haust fumes contain carbon monoxide, a
colorless, odorless gas that may cause
loss of consciousness and death within a
short time. Always operate the watercraft
in an open area.
(1) Launch the watercraft in water free from
weeds and debris and at least 60 cm (2 ft)
deep.
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Operation
34
WARNING
EWJ00570
Never operate in water that is less than 60
cm (2 ft) deep, otherwise you increase
your chance of hitting a submerged ob-
ject, which could result in injury.
CAUTION:
ECJ00470
Never operate in water that is less than 60
cm (2 ft) deep, otherwise pebbles or sand
could be sucked into the jet intake, caus-
ing impeller damage and engine overheat-
ing.
(2) Turn the fuel cock knob to “ON”.
NOTE:
If the watercraft has been sitting for a while,
remove the fuel tank filler cap to release any
built-up pressure in the fuel tank due to fuelexpansion, and then install the filler cap be-
fore starting the engine.
(3) Attach the engine shut-off cord to your left
wrist, and then attach the clip to the en-
gine shut-off switch.
WARNING
EWJ00580
Check that the engine shut-off cord is not
frayed or broken, and keep it free from the
handlebars so that the engine stops if the
operator falls off. The engine shut-off cord
may not pull free if wrapped around the
handlebars when the operator falls off, al-
lowing the watercraft to continue to run
and cause an accident.
1Clip
2Engine shut-off switch
3Engine shut-off cord
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Operation
45
EJU33420
Transporting
WARNING
EWJ00750
Always turn the fuel cock knob to “OFF”
when transporting the watercraft, other-
wise fuel could leak out into the engine or
engine compartment, which would create
a fire hazard.
Transport this watercraft using a special trail-
er that incorporates a hole into which the pin
can be inserted and locked after passing it
through the bow rope hole.
After securing the bow with the pin, secure the
stern with ropes or tie downs routed over thegunwale. Use a rubber shock cord to secure
the steering pole.
CAUTION:
ECJ00630

Do not route ropes or tie downs over the
steering pole, as they could damage it.
Also, wrap the ropes or tie downs with
towels or rags where they touch the
body of the watercraft to avoid scratch-
ing or damage.

Do not transport the watercraft with the
steering pole up, otherwise the steering
pole could be damaged.
1Pin
2Bow rope hole
1Rubber shock cord
2Tie down
UF1N75E0.book Page 45 Tuesday, May 16, 2006 9:53 AM

Maintenance and care
46
EJU33480
Storage
WARNING
EWJ00320
Always turn the fuel cock knob to “OFF”
when storing the watercraft, otherwise
fuel could leak out into the engine or en-
gine compartment, which would create a
fire hazard.
Storage for long periods of time, such as win-
ter storage, requires preventive maintenance
to ensure against deterioration. It is advisable
to have the watercraft serviced by a Yamaha
dealer prior to storage. However, the following
procedures can be performed by the owner.
EJU33510Flushing the cooling system
Flushing the cooling system is essential to
prevent it from clogging with salt, sand, or dirt.
CAUTION:
ECJ00120

Do not supply water to the cooling water
passages when the engine is not run-
ning. The water could flow back through
the muffler into the crankcase, causing
severe engine damage.

Do not run the engine for more than 15
seconds on land without supplying wa-
ter, otherwise the engine could over-
heat.
(1) Remove the watercraft from the water
and place it in a horizontal position.
(2) Remove the flushing hose connector
cap, and then insert the garden hose
adapter into the flushing hose connector
and turn it until it is securely connected.
(3) Connect the garden hose adapter to a
water tap using a garden hose.
NOTE:
A garden hose is not included and must be
purchased separately.
(4) Start the engine, and then immediately
turn the water supply on until water flows
out continually from the cooling water pi-
lot outlet.
(5) Run the engine at idling speed for about
3 minutes watching the engine condition.
If the engine stops while flushing, turn the
water supply off immediately and repeat
the above steps.
(6) Turn the water supply off, and then force
the remaining water out of the cooling
water passages by alternately squeezing
and releasing the throttle lever for 10 to
15 seconds.
(7) Stop the engine.
1Garden hose adapter
2Flushing hose connector
3Flushing hose connector cap
UF1N75E0.book Page 46 Tuesday, May 16, 2006 9:53 AM