2007 YAMAHA SUPERJET steering

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
UF1N75E0.book Page 29 Tuesday, May 16, 2006 9:53 AM

Operation
30
CAUTION:
ECJ00400
Do not force the fire extinguisher contain-
er up more than 30 degrees from the stor-
age position, otherwise the container and
hood could be damaged.
(3) Remove the cap to access the fire extin-
guisher.
To close the fire extinguisher container:
(1) Insert the fire extinguisher into the con-
tainer, and then install the cap and tighten
it securely.
(2) Lower the container on the hood to its
storage position and secure it with the
band.
NOTE:

To check the fire extinguisher, see the in-
structions supplied by the fire extinguisher
manufacturer. Always keep the fire extin-
guisher 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 extin-
guisher dealer to obtain one meeting the
proper specifications.
EJU32590Throttle lever
Check the throttle lever for proper operation.Squeeze and release the throttle lever several
times to make sure that there is no hesitation
in its travel. It should be smooth over the com-
plete range and spring back to the idle posi-
tion when released.
WARNING
EWJ00490
Before starting the engine, always check
the operation of the throttle lever.
EJU32600Steering system
Check the handlebars for looseness.
Turn the handlebars as far as possible to the
right and left to make sure that operation is
smooth and unrestricted throughout the
whole range. Also, make sure that the jet
thrust nozzle moves as the handlebars are
turned, and that there is no free play between
the handlebars and the jet thrust nozzle.
EJU32620Steering pole
Check the steering pole for looseness.
UF1N75E0.book Page 30 Tuesday, May 16, 2006 9:53 AM

Operation
31
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.
EJU32650Jet 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,
cavitation could occur, reducing jet thrust, and
possibly damaging the jet pump.
In some cases, the engine may overheat be-
cause of lack of cooling water, and damage to
the engine could result. Cooling water is fed to
the engine by the jet pump. (See page 64 for
jet intake cleaning procedures.)
WARNING
EWJ00470

Keep away from the intake grate while
the engine is on. Items such as long hair,
loose clothing, or PFD straps can be-
come entangled in moving parts, result-
ing in severe injury or drowning.

Stop the engine and remove the clip
from the engine shut-off switch before
removing any debris or weeds, whichmay have collected around the jet in-
take.
EJU32660Engine shut-off cord
Check that the engine shut-off cord is not
frayed or broken. If the cord is damaged, re-
place it; never try to repair it or tie it together.
UF1N75E0.book Page 31 Tuesday, May 16, 2006 9:53 AM

Operation
41
(2) Swim to the rear of the watercraft and up-
right it by turning it clockwise only.
NOTE:
If the port (left) side of the capsized watercraft
is tilting up, push down on the gunwale so that
the port (left) side is down before turning the
watercraft clockwise.
CAUTION:
ECJ00520
Do not turn the watercraft over counter-
clockwise, otherwise water can enter the
carburetor and engine, which can result in
severe damage.
(3) Start the engine and operate the water-
craft to discharge any water remaining in
the engine compartment. (If the engine
does not start, see “Towing the water-
craft” on page 66 or “Submerged water-
craft” on page 67.)
NOTE:

To efficiently discharge water from the en-
gine compartment, operate the watercraft
as straight as possible and above planing
speed for at least 2 minutes.

To stabilize the watercraft when accelerat-
ing to planing speed, maintain a low center
of gravity by operating it in the kneeling po-
sition.
EJU33240Turning the watercraft
Steering control depends on the combination
of handlebar position and the amount of throt-
tle.
Water sucked in through the intake grate is
pressurized by the impeller in the jet pump. As
the pressurized water is expelled from the
pump through the jet thrust nozzle, it creates
thrust to move and steer the watercraft. The
higher the engine speed, the more thrust pro-
duced.
The amount of jet thrust, in addition to the po-
sition of the handlebars, determines how
sharply you turn.
A. More throttle produces higher thrust, so
the watercraft will turn more sharply.
UF1N75E0.book Page 41 Tuesday, May 16, 2006 9:53 AM

Operation
44
EJU33360
Post-operation care
To keep your watercraft in top shape, always
take it out of the water after using it and per-
form the following procedures. Leaving the
watercraft in the water for extended periods
will accelerate the rate of normal deterioration
of the jet unit components and hull finish. Ma-
rine organisms and corrosion are some of the
conditions that can adversely affect the life of
many watercraft components.
(1) Remove the watercraft from the water.
(2) Wash down the hull, steering pole, han-
dlebars, and jet unit with fresh water.
(3) Remove the hood and check the engine
compartment for water. To drain excess
water, turn the watercraft on its port (left)
side. If necessary, turn the watercraft up-
side down to drain the water completely.
CAUTION:
ECJ00580

Place a suitable clean cloth or carpeting
underneath the watercraft to protect it
from abrasions and scratches.

Always turn the watercraft over onto its
port (left) side.

When turning the watercraft onto its
side or inverting it, support the bow and
secure the steering pole, otherwise the
steering pole and handlebars could be
bent or damaged.
NOTE:
This watercraft is equipped with an automatic
bilge draining system that removes water
from the engine compartment while you are
underway. However, some residual water will
remain.
(4) Place the watercraft in a horizontal posi-
tion.(5) Flush the cooling system to prevent it
from clogging with salt, sand, or dirt. (See
page 46 for flushing procedures.)
(6) Drain residual water from the exhaust
system by alternately squeezing and re-
leasing the throttle lever for 10 to 15 sec-
onds while the engine is running.
CAUTION:
ECJ00560
Do not run the engine for more than 15
seconds, otherwise the engine could over-
heat.
(7) If the watercraft will be stored for a week
or more, lubricate internal engine compo-
nents to help prevent corrosion. (See
page 47 for lubrication procedures.)
(8) Rinse the engine and engine compart-
ment with a small amount of water.
CAUTION:
ECJ00570
Do not use high-pressure water when rins-
ing the engine or engine compartment as
severe engine damage could result.
(9) Wipe the engine and engine compart-
ment dry with a clean cloth (repeat step 3,
if necessary).
(10) Wipe the hull, steering pole, handlebars,
and jet unit dry with a clean cloth.
(11) Spray a rust inhibitor on metallic parts to
minimize corrosion.
(12) Allow the engine compartment to air dry
completely before installing the hood.
UF1N75E0.book Page 44 Tuesday, May 16, 2006 9:53 AM

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
47
(8) Remove the garden hose adapter and in-
stall the flushing hose connector cap.
EJU33560Lubrication
WARNING
EWJ00300
To reduce the risk of fire or explosion:
Never pour or spray gasoline, or any sub-
stance other than a rust inhibitor through
the hole in the carburetor silencer cover.
CAUTION:
ECJ00150

Be sure to install the silencer cap se-
curely after fogging the engine, other-
wise water could enter the engine and
cause damage.

Do not run the engine for more than 15
seconds on land, otherwise the engine
could overheat.
(1) Remove the silencer cap.
(2) Start the engine with the watercraft in a
well-ventilated area.
(3) With the engine running at a fast idle,
quickly spray as much rust inhibitor as
possible through the hole in the silencer
cover. Keep spraying until the engine
stalls (or a maximum of 15 seconds).
(4) Install the silencer cap securely.
(5) Lubricate all cables such as the throttle,
choke, and steering cables.
NOTE:
Use a suitable marine grease applicator to
pressure-lubricate the cables and purge out
any moisture between the inner and outer ca-
bles.
(6) Lubricate the areas of the watercraft
specified in “Lubrication points” on page
57.
EJU33640Fuel system
WARNING
EWJ00290
GASOLINE AND ITS VAPORS ARE HIGH-
LY FLAMMABLE AND EXPLOSIVE!

Do not smoke when refueling, and keep
away from sparks, flames, and other
sources of ignition.

Stop the 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 just reaches the
bottom of the filler tube. Do not fill up the
filler tube because fuel expands as it
warms up and could overflow. If tempo-
rarily leaving the watercraft with a full
fuel tank, do not leave it in direct sun-
light. Leave it in a well-ventilated area
with the watercraft in a horizontal posi-
tion.

Tighten the fuel tank filler cap securely
after refueling.

If you should swallow some gasoline, in-
hale a lot of gasoline vapor, or get gaso-
1Silencer cap
UF1N75E0.book Page 47 Tuesday, May 16, 2006 9:53 AM

Maintenance and care
51
EJU33820Periodic maintenance chart
The following chart gives general guidelines for periodic maintenance. However, maintenance
may need to be performed more frequently depending on your operating conditions.
This “” mark indicates maintenance that you may do yourself.
This “” mark indicates work to be done by a Yamaha dealer.
* This operation should be performed after every use.
Item OperationInitial Thereafter every
Page 10
hours50
hours100
hours100
hours200
hours
6
months12
months12
months24
months
Spark plugsCheck, clean, adjust 56
Lubrication pointsLubricate 57
Intermediate hous-
ingLubricate 57
Fuel systemCheck 52
Fuel filterCheck, clean, replace 52
Fuel tankCheck, clean 52
CarburetorCheck, adjust 60
Trolling speedCheck, adjust 60
Carburetor throt-
tle shaftCheck—
Cooling water pas-
sagesFlush
*46
Bilge strainerClean—
ImpellerCheck—
Jet thrust nozzle
angleCheck, adjust 52
Handlebar pivot
shaftCheck—
Steering frictionCheck, adjust 53
Throttle cableCheck, adjust 55
Choke cableCheck, adjust 58
BatteryCheck, charge 59
Rubber couplingCheck—
Engine mountCheck—
Nuts and boltsCheck—
UF1N75E0.book Page 51 Tuesday, May 16, 2006 9:53 AM