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EJU20581
Stern drain plug
Check the stern drain plugs for proper
installation.
CAUTION:@ Make sure that the stern drain plugs
are tightened securely before launch-
ing the watercraft. Otherwise, water
may flood the engine compartment
and cause the watercraft to submerge.
Clean any foreign materials, such as
dirt or sand, from the drain plug
threads before installing the drain
plugs. Otherwise, the drain plugs may
be damaged and water may enter the
engine compartment.
@
EJU01969
Battery
Check the battery condition and the elec-
trolyte level.
Check that the battery leads are tightened
securely and there is no corrosion on the
battery terminals.
WARNING@ 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 battery does not have sufficient
power to start 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
result if the breather hose is damaged,
obstructed, or not connected properly.
@
Make sure that the battery is securely
held in place.
1
Positive (+): Red lead
2
Negative (–): Black lead
3
Breather hose
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3-11
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EJU01864
Fire extinguisher
Check that there is a full fire extinguisher
on board. The fire extinguisher container 1
is located in the seat storage compartment.
To open the fire extinguisher container
cap 2, turn it counterclockwise.
After inserting the fire extinguisher make
sure that the container cap is tightened
securely.
NOTE:@ See the instructions supplied by the fire
extinguisher manufacturer for checking
the fire extinguisher. Always keep the
extinguisher in the fire extinguisher con-
tainer.
Always carry a fire extinguisher on board.
A fire extinguisher is not standard equip-
ment with this watercraft. If you do not
have one, contact a Yamaha dealer or a
fire extinguisher dealer to obtain one
meeting the proper specifications.
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3-17
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EJU01836
Operation
WARNING@ Before operating your watercraft,
become familiar with all controls. Con-
sult your Yamaha dealer about any con-
trol or function you do not fully
understand. Failure to understand how
controls work could cause an accident or
prevent you from avoiding an accident.
CAUTION:@ Make sure that the stern drain plugs are
securely tightened before launching the
watercraft.
EJU18072
Engine break-in
The engine break-in period is essential to
allow the various components of the engine
to wear and polish themselves to the correct
operating clearances. This ensures proper
performance and promotes longer compo-
nent life.
CAUTION:@ Be sure to check the engine oil level
before operating the watercraft for the
first time. (See page 3-7 for engine oil
checking procedures.)
@
1. Launch the watercraft and start the
engine. (See page 3-19 for engine start-
ing procedures.)
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EJU21132
Boarding with passengers
WARNING@ Severe internal injuries can occur if
water is forced into body cavities as a
result of being near the jet thrust nozzle.
Do not apply throttle until the passen-
gers are seated with their feet on the
floor of the footwell and are securely
holding on to the person in front of them
or to the handgrip provided.
@
1. Climb on board as noted in the previous
section, and sit astride the seat. Attach
the engine shut-off cord to your left wrist,
and then install the clip to the engine
shut-off switch.
2. Have the passengers move to the rear of
the watercraft.
3. Have the passenger get on board and sit
on the seat. If a second passenger is
getting on, have him or her follow the
same procedure.
NOTE:@ When a passenger is getting on board, both
the passenger and the operator should try to
balance the watercraft.
@
4. The operator should check to see that
the passengers have their feet on the
floor of the footwell and that they are
securely holding on to the person in front
of them or to the handgrip provided.
Never allow a passenger to ride in front
of the operator.
5. Start the engine, look in all directions,
and then accelerate to planing speed.
WARNING@ Before starting off, make sure that there
are no boats, obstructions, or swimmers
around you.
@
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EJU18112
Transporting
When transporting the watercraft on a
trailer, secure the tie downs to the trailer
through the bow eye and stern eyes.
CAUTION:@ Do not use any projections other than
the bow eye and stern eyes to secure
the watercraft to the trailer. Otherwise,
the watercraft may be damaged.
Do not route ropes or tie downs over
the seat, as they may leave permanent
marks on the seat’s surface. Also,
wrap the ropes or tie downs with tow-
els or rags where they touch the body
of the watercraft to avoid scratches or
damage.
Before putting the watercraft on the
trailer or transporting it, be sure to put
the shift lever in the forward position,
otherwise the reverse gate may hit an
obstruction, which may cause dam-
age.
@
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Page 99 of 140
4-2
E
1. Put the watercraft on land in a horizontal
position.
2. Remove the rear seat and seat storage
compartment. (See page 2-5 for seat
removal and installation procedures.)
3. Open the flushing hose connector
cap1, and then insert the garden hose
adapter 2 into the flushing hose con-
nector 3 and turn it until it is securely
connected.
4. Connect the garden hose adapter to a
water tap using a hose.
NOTE:@ The garden hose is not included and must
be purchased separately.
@
5. Start the engine, and then immediately
turn the water supply on until water flows
out continually from the jet nozzle.
6. 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.
7. Turn the water supply off, and then force
the remaining water out from the cooling
passages by alternately squeezing and
releasing the throttle lever for 10 to
15 seconds.
8. Stop the engine.
9. Remove the garden hose adapter and
secure the cap.
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Page 101 of 140
4-4
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EJU19652
Fuel system
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.
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.
@
Top off the fuel tank with fresh gasoline
and add fuel stabilizer and conditioner to the
fuel tank by following the manufacturer’s
instructions carefully.
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4-17
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Measure the spark plug gap a with a
wire thickness gauge. Replace the spark
plug or adjust the gap to specification if nec-
essary.
To install the spark plug:
1. Clean the gasket surface.
2. Wipe any dirt from the threads of the
spark plug.
3. Install the spark plug, and then tighten it
to the specified torque.
4. Install the spark plug cap.
NOTE:@ Wipe off any water on the spark plug or
inside the cap before installing the spark
plug cap. Push the spark plug cap down
until it is securely installed.
If a torque wrench is not available when
you are installing a new spark plug, a
good estimate of the correct torque is 1/4
turn to 1/2 turn past finger tight with the
spark plug wrench included in the tool kit.
Have the spark plug adjusted to the cor-
rect torque with a torque wrench as soon
as possible.
@
WARNING@ Be careful not to damage the insulator
when removing or installing a spark plug.
A damaged insulator could allow sparks
to escape, which could lead to an explo-
sion or fire.
@
5. Install the air filter element in the air filter
case, and then install the air filter case
cover. Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Spark plug tightening torque:
12.5 N·m (1.25 kgf·m, 9 ft·lb)
E_F1Y-70.book Page 17 Friday, August 26, 2005 9:47 AM
