ECU YAMAHA SUPERJET 2010 Owners Manual
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Page 28 of 78
Control function operation
21
check the jet intake for clogging. (See page
65 for information on the jet intake.)
TIP:
If the cooling water passages are dry, it will
take about 20 seconds for the water to
reach the outlet after the engine is started.
Water discharge may not be constant when
the engine is running at idling speed. If this
occurs, apply a little throttle to make sure
that water discharges properly.
EJU40321Water separator
The water separator prevents water from en-
tering the fuel tank by collecting any water that
has entered the fuel tank breather hose if the
watercraft was capsized.
If water has collected in the water separator,
drain it by loosening the drain screw.To drain water from the water separator:
(1) Place a drain pan or dry cloth under the
water separator.
(2) Gradually loosen the drain screw to drain
the water. Catch the draining water in the
drain pan or soak it up with the dry cloth
so that it does not spill into the engine
compartment. If any water spills into the
watercraft, be sure to wipe it up with a dry
cloth.
(3) Tighten the drain screw securely.
EJU31664Engine overheat warning system
If the engine temperature rises significantly,
the engine overheat warning system will acti-
vate and the engine speed will be limited to
about 3400 r/min to help prevent damage.
If the engine overheat warning system is acti-
vated, immediately reduce the engine speed,
return to shore, and then make sure that wa-
ter is being discharged from the cooling water
pilot outlet while the engine is running. If there
is no discharge of water, stop the engine, and
then check the jet intake for clogging. (See
page 65 for information on the jet intake.)
NOTICE: 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 en-
gine damage.
[ECJ00041]
1Water separator
1Drain screw
1
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Page 30 of 78
Equipment operation
23
To install the hood:
(1) Position the hood on the deck so that the
two projections at the front of the hood fit
under the two stays on the deck.
(2) Push down on the hood latch, and then
turn the knob to the “LOCK” position to
securely lock the hood in place.
(3) While holding the steering pole, move the
lock pin to the stowed position, and then
lower the steering pole.
EJU36001Bow rope hole
The bow rope hole is used to attach a rope to
the watercraft when transporting, mooring, ortowing it in an emergency. (See page 67 for
towing procedures.)
EJU36011Stern rope hole
The stern rope hole is used to attach a rope to
the watercraft when mooring it.
EJU31674Storage pouch
The storage pouch is located on the bottom of
the hood.
Use the storage pouch to store the own-
er’s/operator’s manual, tool kit, and other
small items. The storage pouch is not de-
signed to be waterproof. If you carry objects
that must be kept dry, put them in a water-
proof bag.
To remove the storage pouch:
(1) Remove the hood. (See page 22 for hood
removal and installation procedures.)
LOCKOPEN
1Bow rope hole
1Stern rope hole
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Page 31 of 78
Equipment operation
24
(2) Unfasten the bands, and then remove the
storage pouch.
To install the storage pouch:
(1) Bend the owner’s/operator’s manual
slightly to insert it into the storage pouch,
and then add the tool kit and any other
small items. Fold the pouch, and then
wrap the strap around it.
(2) Install the storage pouch on the hood and
secure it with the bands.
(3) Install the hood in its original position.
EJU41002Fire extinguisher container
The fire extinguisher container is located on
the hood.To open the fire extinguisher container:
(1) Lift the steering pole and support it with
the lock pin.
(2) Grasp the tab, pull the band to the rear,
and then pull it up.
(3) Lift the fire extinguisher container about
30 degrees from the storage position.
NOTICE: Do not force the fire extin-
guisher container up more than 30 de-
grees from the storage position,
otherwise the container and hood
could be damaged.
[ECJ00401]
1Storage pouch
2Band
1Strap
1Steering pole
2Lock pin
1Fire extinguisher container
2Ta b
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Page 32 of 78
Equipment operation
25
(4) Loosen the fire extinguisher container
cap and remove it.
To close the fire extinguisher container:
(1) Insert the fire extinguisher into the con-
tainer, and then install the fire extinguish-
er container cap and tighten it securely.
(2) Lower the container on the hood to its
storage position and secure it with the
band.
(3) While holding the steering pole, move the
lock pin to the stowed position, and then
lower the steering pole.
1Fire extinguisher container cap
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Page 35 of 78
Operation and handling requirements
28
EJU40021
Draining the bilge water
NOTICE
ECJ01301
Do not run the engine at full throttle when
bilge water remains in the engine compart-
ment. The bilge water can splash into the
engine, which can result in severe dam-
age.
EJU40920Draining the bilge water on water
A small quantity of bilge water will remain in
the engine compartment even after the bilge
water is drained on water. To completely re-
move the bilge water, remove the watercraft
from the water and wipe up any remaining
moisture in the engine compartment with a
dry cloth.
Jet vacuum bilge draining system
While the watercraft is operating, a vacuum is
generated in the jet pump that draws in the
bilge water from the engine compartment and
discharges it from the jet thrust nozzle.
To drain the bilge water on water:
Operate the watercraft as straight as possible
and above planing speed for at least 2 min-
utes. NOTICE: Do not run the engine at full
throttle for at least 1 minute after the en-
gine has been restarted. Bilge water in the
engine compartment can splash into the
engine, which can result in severe dam-
age.
[ECJ00553]EJU33423
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.
When transporting the watercraft on a trailer,
secure the bow rope hole and stern of the wa-
tercraft to the trailer with ropes or tie downs.
Use a rubber shock cord to secure the steer-
ing pole to the watercraft. NOTICE: Do not
secure the steering pole with ropes or tie
downs and do not secure it to the trailer.
Also, do not transport the watercraft with
the steering pole up. Otherwise, the steer-
ing pole could be damaged. Wrap the
ropes or tie downs with towels or rags
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Page 38 of 78
Pre-operation checks
31
EJU31981
WARNING
EWJ00411
Failure to inspect or maintain the watercraft properly increases the possibility of an ac-
cident or damage to the watercraft. Do not operate the watercraft if you find any prob-
lem. If a problem cannot be corrected by the procedures provided in this manual, have
the watercraft inspected by a Yamaha dealer.
EJU31995Pre-operation checklist
Before using this watercraft, be sure to perform the checks in the following checklist.
ITEM ROUTINE PAGE
PRE-LAUNCH CHECKS
Engine compartmentVentilate the engine compartment.
Check inside the engine compartment for damage.33
Fuel systemCheck the fuel system for leakage.
Check the fuel level in the fuel tank.33
Water separatorCheck the water separator for water. 34
Engine unitCheck the exterior of the engine unit for damage. 34
Bilge waterCheck the engine compartment for bilge water. 34
BatteryCheck the battery connections and electrolyte level. 34
Steering systemCheck the steering system for proper operation. 34
Throttle leverCheck the throttle lever for proper operation.
Check the throttle lever free play.35
Engine shut-off cord (lan-
yard)Check the engine shut-off cord (lanyard) for dam-
age.36
SwitchesCheck the start switch, engine stop switch, and en-
gine shut-off switch for proper operation.36
Storage pouchCheck the storage pouch for damage and water.
Check that the storage pouch is securely installed.36
Safety equipmentCheck that safety equipment meeting the applicable
regulations is on board.37
Fire extinguisher containerCheck the fire extinguisher container for damage. 37
Fire extinguisherCheck the condition of the fire extinguisher. 37
Hull and deckCheck the hull and deck for damage. 37
Jet intakeCheck the jet intake for damage and clogging. 37
HoodCheck that the hood is securely closed. 37
POST-LAUNCH CHECKS
Cooling water pilot outletCheck that water is discharged from the cooling wa-
ter pilot outlet while the engine is running.38
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Page 41 of 78
Pre-operation checks
34
Add fuel if necessary. (See page 27 for filling
procedures.)
EJU32422Water separator check
Make sure that no water has collected in the
water separator. If water has collected in the
water separator, drain it. (See page 21 for
draining procedures.)
EJU40181Engine unit check
Check the exterior of the engine unit for dam-
age or other problem.
EJU41011Bilge water check
Make sure that no bilge water has collected in
the engine compartment. If bilge water has
collected in the engine compartment, wipe it
up with a dry cloth. NOTICE: Excessive wa-
ter in the engine compartment can splash
into the engine, which can result in severe
damage.
[ECJ00341]
EJU32484
Battery checks
Make sure that the battery terminals and
breather hose are not damaged and that the
battery leads and breather hose are connect-
ed properly. WARNING! Fire or explosion
could result if the breather hose is dam-aged, obstructed, or not connected prop-
erly.
[EWJ00451]
Make sure that the electrolyte level is be-
tween the minimum and maximum level
marks. WARNING! Never operate the wa-
tercraft if the battery does not have suffi-
cient power to start the engine or if it
shows any other signs of decreased pow-
er. Loss of battery power may leave you
stranded.
[EWJ01240]
Make sure that the battery is securely held in
place.
EJU32613Steering system checks
Turn the handlebars to the right and left sev-
eral times to make sure that operation is
smooth and unrestricted throughout the
1Water separator
1Positive (+) battery terminal: Red lead
2Negative (–) battery terminal: Black lead
3Breather hose
1Maximum level mark
2Minimum level mark
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Page 44 of 78
Pre-operation checks
37
pouch is securely installed. (See page 23 for
information on the storage pouch.)
EJU40121Safety equipment check
Check that safety equipment meeting the ap-
plicable regulations is on board.
EJU32352Hull and deck check
Check the hull and deck for damage or other
problem.
EJU32655Jet intake checks
Make sure that the jet intake is not damaged
or clogged with weeds or debris. If the jet in-
take is clogged, clean it. (See page 65 for jet
intake cleaning procedures.)
EJU40701Hood check
Make sure that the hood is securely closed.
(See page 22 for more information.)
EJU41071Fire extinguisher container checks
Make sure that the fire extinguisher container
is not damaged and is securely held in place.
(See page 24 for information on the fire extin-
guisher container.)
EJU32503Fire extinguisher check
Check that there is a full fire extinguisher on
board.
To check the fire extinguisher, see the instruc-
tions supplied by the fire extinguisher manu-
facturer. Always keep the fire extinguisher in
the fire extinguisher container.
Always carry a fire extinguisher on board. A
fire extinguisher is not standard equipment
with this watercraft. If you do not have one,
contact a Yamaha dealer or a fire extinguisher
dealer to obtain one meeting the proper spec-
ifications.
EJU40143Post-launch checks
Perform the post-launch checks in the pre-op-
eration checklist while the watercraft is in the
water and the engine is running.
To perform the post-launch checks:
(1) Launch the watercraft. (See page 40 for
launch procedures.)
(2) Perform the checks and make sure that
there are no malfunctioning items or oth-
er problems.
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Page 56 of 78
Care and storage
49
EJU41190
Post-operation care
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.
After using the watercraft, always take it out of
the water, clean it, and store it. Leaving the
watercraft in the water for extended periods
will accelerate the rate of normal deterioration
of the jet pump and hull. Marine organisms
and corrosion are some of the conditions that
can adversely affect the life of many water-
craft components.
EJU33517Flushing the cooling water passages
NOTICE
ECJ01360
Do not run the engine for more than 15
seconds on land without supplying water,
otherwise the engine could overheat.
Flush the cooling water passages to prevent
them from clogging with salt, sand, or dirt.
(1) Place the watercraft in a horizontal posi-
tion.
(2) Remove the hood. (See page 22 for hood
removal and installation procedures.)(3) Connect the garden hose adapter to a
garden hose.
(4) Loosen the flushing hose connector cap
and remove it. Insert the garden hose
adapter into the flushing hose connector
and turn it until it is securely connected.
(5) Connect the garden hose to a water tap.
(6) Make sure that the area around the wa-
tercraft is clear, and then start the engine.
Immediately after the engine starts, turn
the water supply on gradually until water
1Garden hose adapter
1Flushing hose connector
2Flushing hose connector cap
3Garden hose adapter
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Page 57 of 78
Care and storage
50
flows out continually from the cooling wa-
ter pilot outlet.
(7) 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 perform
the procedure again from step 6.
NOTICE: Do not supply water to the
cooling water passages when the en-
gine is not running. The water could
flow back through the muffler into the
engine, causing severe engine dam-
age.
[ECJ00122]
(8) Turn the water supply off.
(9) Discharge the remaining water out of the
cooling water passages by alternately
squeezing and releasing the throttle lever
quickly for 10 to 15 seconds.
(10) Stop the engine.
(11) Remove the garden hose adapter, and
then install the flushing hose connector
cap and tighten it securely.
(12) Install the hood in its original position.
EJU40741Cleaning the watercraft
(1) Remove the hood. (See page 22 for hood
removal and installation procedures.)
(2) Rinse the engine and engine compart-
ment with a small amount of water.
NOTICE: Do not use high-pressure
water when rinsing the engine or en-gine compartment as severe engine
damage could result.
[ECJ00571]
(3) Wipe the engine and engine compart-
ment with a dry cloth.
(4) Wash down the hull and jet pump with
fresh water.
(5) Wipe the hull and jet pump with a dry
cloth.
(6) Wipe all vinyl and rubber components,
such as the engine compartment seals,
with a vinyl protectant.
(7) To minimize corrosion, spray metallic
parts of the hull with a rust inhibitor.
(8) Allow the engine compartment to air dry
completely before installing the hood.
(9) Install the hood in its original position.
EJU33685Battery care
If the watercraft will not be used for more than
a month, remove the battery from the water-
craft, check it, and then store it in a cool, dry
place.
WARNING
EWJ00791
Battery electrolyte is poisonous and dan-
gerous, causing severe burns, etc. Elec-
trolyte contains sulfuric acid. Avoid
contact with skin, eyes, or clothing.
Antidotes
External: Flush with water.
Internal: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten
egg, or vegetable oil. Call a physician im-
mediately.
Eyes: Flush with water for 15 minutes and
get prompt medical attention.
Batteries produce explosive gases. Keep
sparks, flames, cigarettes, etc., well away.
If using or charging the battery in an en-
closed space, make sure that it is well ven-
tilated. Always shield your eyes when
working near batteries.
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