2009 YAMAHA SUPERJET engine

Operation
26
EJU31980
Pre-operation checks EJU31991Pre-operation check list
Before operating this watercraft, perform the checks in the following check list.
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.
TIP:
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.27
BilgeCheck for water and fuel and drain if necessary. 28
Throttle leverCheck that the throttle lever springs back smoothly. 29
Steering systemCheck for proper operation. 29
FuelCheck the fuel level and replenish if necessary.
Check the hoses and tank for leakage.27
Water separatorCheck for water and drain if necessary. 27
BatteryCheck the electrolyte level and battery condition. 28
HoodCheck that the hood is securely closed. 17
Hull and deckCheck the hull and deck for cracks and other dam-
age.27
Jet intakeCheck for debris and remove if necessary. 30
Fire extinguisherCheck the condition and replace if necessary. 28
Engine shut-off cord (lan-
yard)Check the condition and replace if frayed or broken. 30
SwitchesCheck the start switch, engine stop switch, and en-
gine shut-off switch for proper operation.30
AFTER LAUNCH
Cooling water pilot outletCheck that water is discharged while the engine is
running and the watercraft is in the water.31
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Operation
27
EJU32280Pre-operation check points EJU32291Engine compartment
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.
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 17 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.
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.
EJU32361Fuel system
Make sure that there is sufficient fuel in the
fuel tank before each use.
Also, check the fuel system for leakage,
cracks, and malfunctions. (See page 51 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 17 for hood
removal and installation procedures.)
(3) Check the fuel level in the fuel tank and
replenish if necessary. (See page 25 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
28
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.
EJU32432Bilge
Check the bilge. Wipe up any remaining mois-
ture or fuel residue with a dry rag. NOTICE:
Excessive water in the engine compart-
ment can splash into the engine, which
can result in severe damage.
[ECJ00341]
EJU32482
Battery
Check the battery electrolyte level and check
that the battery has sufficient power to start
the engine easily. WARNING! 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 pow-
er. Loss of battery power may leave you
stranded.
[EWJ01240]
Recharge the battery or replace it if it is not in
good condition. (See page 57 for battery re-
charging procedures.)
Also, check that the battery leads are tight-
ened securely and that there is no corrosion
on the battery terminals. Check that the
breather hose is securely connected to the
battery and that it is not pinched. WARNING!
Fire or explosion could result if the breath-er hose is damaged, obstructed, or not
connected properly.
[EWJ00451]
Make sure that the battery is securely held in
place.
EJU32501Fire extinguisher
Check that there is a full fire extinguisher on
board.
The fire extinguisher container is located on
the hood under the steering pole.
1Positive (+) battery terminal: Red lead
2Negative (–) battery terminal: Black lead
3Breather hose
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Operation
30
turned, and that there is no free play between
the handlebars and the jet thrust nozzle.
EJU32620Steering pole
Check the steering pole for looseness.
Move the steering pole up and down to make
sure that operation is smooth and unrestricted
throughout the whole range. Also, make sure
that the steering pole does not have any side
play.
EJU32651Jet intake
Carefully check the jet intake for weeds, de-
bris, or anything else that might restrict the in-
take of water. If the jet intake is clogged, clean
it. (See page 63 for jet intake cleaning proce-
dures.)
If the watercraft is operated while the jet in-
take is clogged, cavitation could occur, reduc-
ing jet thrust, and possibly damaging the jet
pump. In some cases, the engine may over-
heat because of lack of cooling water, anddamage to the engine could result. Cooling
water is fed to the engine by the jet pump.
EJU32661Engine shut-off cord (lanyard)
Check that the engine shut-off cord (lanyard)
is not frayed or broken. If the cord is dam-
aged, replace it. WARNING! Never try to re-
pair the engine shut-off cord (lanyard) or
tie it together. The engine shut-off cord
(lanyard) may not pull free when the oper-
ator falls off, allowing the watercraft to
continue to run and cause an accident.
[EWJ01220]
EJU32671
Switches
NOTICE
ECJ00410
Do not run the engine for more than 15
seconds when checking the switches on
land without supplying water, otherwise
the engine could overheat.
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Operation
31
Check the start switch, the engine stop
switch, and the engine shut-off switch for
proper operation.
Push the start switch to start the engine. As
soon as the engine starts running, push the
engine stop switch to verify that the engine
stops immediately. Restart the engine, and
then pull the engine shut-off cord (lanyard) to
remove the clip from the engine shut-off
switch to verify that the engine stops immedi-
ately. (See pages 19 to 20 for information on
proper operation of the start switch, the en-
gine stop switch, and the engine shut-off
switch.)
EJU32680Cooling water pilot outlet
Check that water comes out from the cooling
water pilot outlet while the engine is runningand the watercraft is in the water. (See page
20 for more information.)
1Engine shut-off switch
2Start switch
3Engine shut-off cord (lanyard)
4Engine stop switch
5Clip
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Operation
32
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.
EJU32752Engine break-in
NOTICE
ECJ00430
Failure to follow the engine break-in pro-
cedure could result in reduced engine life
or even severe engine damage.
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.
(1) Fill the fuel tank with fuel in a fuel-to-oil ra-
tio of 25:1.
(2) Launch the watercraft, start the engine,
and then board the watercraft. (See page
32 for engine starting procedures.)
(3) Run the engine at the lowest possible
speed for 5 minutes.
(4) Gradually apply throttle to 3/4 or less.
(5) Operate the watercraft at 3/4 throttle or
less for the first tankful of fuel.
(6) Fill the fuel tank once more with fuel in a
fuel-to-oil ratio of 25:1, and then proceed
with normal operation.
(7) After break-in, fill the fuel tank with fuel in
a fuel-to-oil ratio of 50:1.
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.
EJU32832Starting the engine
(1) Remove the fuel tank filler cap to release
any built-up pressure in the fuel tank due
to fuel expansion, and then install the fill-
er cap.
(2) Launch the watercraft in water free from
weeds and debris and at least 60 cm (2 ft)
deep from the bottom of the watercraft.
NOTICE: Never operate in water that is
less than 60 cm (2 ft) deep from the
bottom of the watercraft, otherwise
pebbles or sand could be sucked into
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Operation
33
the jet intake, causing impeller dam-
age and engine overheating.
[ECJ00471]
(3) Turn the fuel cock knob to “ON”.
(4) Attach the engine shut-off cord (lanyard)
to your left wrist, and then attach the clip
to the engine shut-off switch. It is not pos-
sible to start the engine with the clip re-
moved from the engine shut-off switch.
WARNING! Check that the engine
shut-off cord (lanyard) is attached cor-
rectly. If the engine shut-off cord (lan-
yard) is not attached correctly, it may
not pull free when the operator fallsoff, allowing the watercraft to continue
to run and cause an accident.
[EWJ00581]
(5) Pull the choke knob all the way out to
start a cold engine.
TIP:
The choke should not be used when the en-
gine is warm.
(6) While lightly squeezing the throttle lever,
push the start switch (green button), and
then release the switch as soon as the
engine starts to run. If the engine does
not start in 5 seconds, release the start
switch, wait 15 seconds, and then try
again. WARNING! Do not apply too
much throttle when starting the en-
gine, otherwise the watercraft will ac-
celerate unexpectedly. This could
cause a collision or cause the opera-
1Clip
2Engine shut-off switch
3Engine shut-off cord (lanyard)
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Operation
34
tor to be thrown overboard. [EWJ00591]
NOTICE: Never push the start switch
while the engine is running. Do not op-
erate the start switch for more than 5
seconds, otherwise the battery will be
discharged and the engine will not
start. Also, the starter motor could be
damaged.
[ECJ01040]
(7) After the engine has warmed up, push
the choke knob in to its original position.
TIP:
If the choke knob is left pulled out, the engine
will stall.
EJU32861Stopping the engine
To stop the engine, release the throttle lever,
and then push the engine stop switch (red
button). WARNING! You need throttle to
steer. Shutting the engine off can cause
you to hit an obstacle you are attempting
to avoid. A collision could result in severe
injury or death.
[EWJ00601]EJU32871
Leaving the watercraft
If leaving the watercraft, remove the engine
shut-off cord (lanyard) to reduce the chance
of accidental starting or unauthorized use by
children or others.
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