2010 YAMAHA SUPERJET check engine

Table of contents
General and important labels ........... 1
Identification numbers .................... 1
Primary Identification (PRI-ID)
number ........................................... 1
Craft Identification Number (CIN) ...... 1
Engine serial number ........................ 1
Important labels .............................. 2
Warning labels ................................... 3
Other labels ....................................... 6
Safety information ............................. 7
Limitations on who may operate
the watercraft .............................. 7
Cruising limitations ......................... 8
Operation requirements ................. 9
Recommended equipment ........... 11
Hazard information ....................... 12
Watercraft characteristics ............. 12
Safe boating rules ........................ 13
Enjoy your watercraft
responsibly ................................ 14
Description....................................... 15
Watercraft glossary ...................... 15
Location of main components ...... 16
Control function operation ............. 18
Watercraft control functions ......... 18
Engine stop switch .......................... 18
Engine shut-off switch ..................... 18
Start switch ...................................... 18
Throttle lever ................................... 19
Steering system ............................... 19
Steering pole ................................... 19
Fuel cock knob ................................ 19
Choke knob ..................................... 20
Cooling water pilot outlet ................. 20
Water separator ............................... 21
Engine overheat warning system .... 21
Equipment operation ...................... 22
Equipment .................................... 22
Hood ................................................ 22Bow rope hole ................................. 23
Stern rope hole ................................ 23
Storage pouch ................................. 23
Fire extinguisher container .............. 24
Operation and handling
requirements ................................... 26
Fuel and engine oil
requirements ............................. 26
Fuel ................................................. 26
2-stroke engine oil ........................... 26
Mixing fuel and oil ............................ 26
Filling the fuel tank .......................... 27
Draining the bilge water ............... 28
Draining the bilge water on water .... 28
Transporting ................................. 28
First-time operation ........................ 30
Engine break-in ............................ 30
Pre-operation checks ..................... 31
Pre-operation checklist .................... 31
Pre-operation check points .......... 33
Pre-launch checks ........................... 33
Post-launch checks ......................... 37
Operation ......................................... 39
Operating your watercraft ............ 39
Getting to know your watercraft ....... 39
Learning to operate your
watercraft ..................................... 39
Operating positions ......................... 39
Launching the watercraft ................. 40
Starting the engine on water ........... 40
Stopping the engine ........................ 42
Leaving the watercraft ..................... 42
Operating the watercraft .................. 42
Turning the watercraft ..................... 42
Stopping the watercraft ................... 44
Starting off ....................................... 44
Capsized watercraft ......................... 47
Beaching the watercraft ................... 48
Operating in weeded areas ............. 48
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Safety information
10
certain kinds of accidents and that it could
injure you in others.
A helmet is designed to provide some head
protection. Although helmets cannot protect
against all foreseeable impacts, a helmet
might reduce your injuries in a collision with
a boat or other obstacle.
A helmet may have potential safety haz-
ards, as well. Falling into the water could
risk the chance of the helmet catching wa-
ter, commonly known as “bucketing”, and
the resulting strain on your neck could
cause choking, severe and permanent neck
injuries, or death. A helmet could also in-
crease the risk of an accident if it reduces
your vision or hearing, or if it distracts you or
increases your fatigue.
How should you decide if a helmet’s poten-
tial safety benefits outweigh its potential
risks for you? Consider your particular
riding conditions. Consider factors such as
your riding environment and your riding
style and ability. Also consider the likeli-
hood of traffic congestion, and the water
surface conditions.
If you decide to wear a helmet based upon
your riding circumstances, choose one
carefully. Look for a helmet designed for
personal watercraft use, if possible. If you
will be engaging in closed-course competi-
tion, follow the helmet requirements of the
sanctioning organization.

Never operate the watercraft after consum-
ing alcohol or taking other drugs.

For reasons of safety and proper care of the
watercraft, always perform the pre-opera-
tion checks listed on page 31 before operat-
ing the watercraft.

The operator should always keep both feet
or knees on the riding tray when the water-
craft is in motion. Lifting your feet increasesthe chances of losing your balance or hitting
objects outside the watercraft with your
feet.

Always consult your doctor on whether it is
safe for you to operate this watercraft if you
are pregnant or in poor health.

Do not attempt to modify this watercraft.
Modifications to your watercraft may reduce
safety and reliability, and render the water-
craft unsafe or illegal for use.

Attach the engine shut-off cord (lanyard) to
your left wrist and keep it free from the han-
dlebars so that the engine stops if you, the
operator, fall off. After riding, remove the
engine shut-off cord (lanyard) from the wa-
tercraft to avoid accidental starting or unau-
thorized use by children or others.

Scan carefully for swimmers, and stay
away from swimming areas. Swimmers are
hard to see and you could accidentally hit
someone in the water.
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Control function operation
20
Select the fuel cock knob position from the fol-
lowing three positions according to the cir-
cumstances of use.
OFF:
With the fuel cock knob in this position, fuel
does not flow to the carburetors. Always turn
the fuel cock knob to this position when the
engine is not running.
ON:
With the fuel cock knob in this position, fuel
flows to the carburetors. Turn the fuel cock
knob to this position when starting the engine
and operating the watercraft.
RES:
With the fuel cock knob in this position, the
fuel reserve is made available. Turn the fuel
cock knob to this position if you run out of fuel
while operating the watercraft. When this oc-
curs, refuel as soon as possible and be sure
to turn the fuel cock knob back to “ON”.EJU31202Choke knob“”
The choke knob can be operated to supply a
richer air-fuel mixture that is required to start a
cold engine.
To use the choke:
Pull the choke knob out.
Push the choke knob in to stop using the
choke after the engine starts.
EJU31222Cooling water pilot outlet
When the engine is running, some of the cool-
ing water that is circulated in the engine is dis-
charged from the cooling water pilot outlet.
There is a cooling water pilot outlet on the port
(left) side of the watercraft. To check for prop-
er operation of the cooling system, make sure
that water is being discharged from the cool-
ing water pilot outlet. If water is not being dis-
charged from the outlet, stop the engine and
1Fuel cock knob
1Choke knob
1Cooling water pilot outlet
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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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Operation and handling requirements
27
(2) To mix them thoroughly, shake the con-
tainer from side to side.
EJU31915Filling the fuel tank
To fill the fuel tank:
(1) Before refueling, stop the engine. Do not
stand or sit on the watercraft. Never refu-
el while smoking, or while in the vicinity of
sparks, open flames, or other sources of
ignition.
(2) Place the watercraft in a well-ventilated
area and in a horizontal position.
(3) Remove the hood, and then check the
fuel level. (See page 22 for hood removal
and installation procedures.)
(4) Loosen the fuel filler cap and remove it.
(5) Slowly add fuel to the fuel tank.(6) Stop filling when the fuel level just reach-
es the bottom of the filler tube. Do not fill
up the filler tube. Because fuel expands
when it heats up, heat from the engine or
the sun can cause fuel to spill out of the
fuel tank. Do not leave the watercraft with
a full tank in direct sunlight.
(7) Wipe up any spilled fuel immediately with
a dry cloth.
(8) Install the fuel filler cap and tighten it se-
curely.
(9) Install the hood in its original position.
12-stroke engine oil
2Gasoline
1Fuel filler cap
Fuel tank capacity:
To t a l :
18 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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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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Pre-operation checks
33
EJU32281
Pre-operation check points EJU40684Pre-launch checks
Perform the pre-launch checks in the pre-op-
eration checklist while the watercraft is on
land.
To perform the pre-launch checks:
(1) Remove the hood. (See page 22 for hood
removal and installation procedures.)
(2) Perform the checks and make sure that
there are no malfunctioning items or oth-
er problems.
(3) After completing these checks, install the
hood in its original position.
EJU32333Engine compartment check
WARNING
EWJ00461
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.
Ventilate the engine compartment. Leave the
engine compartment open for a few minutes
to allow any fuel vapors to escape.
Make sure that there is no damage inside the
engine compartment.
EJU34206Fuel system checks
WARNING
EWJ00381
Leaking fuel can result in fire or explosion.

Check for fuel leakage regularly.

If any fuel leakage is found, the fuel sys-
tem must be repaired by a qualified me-
chanic. Improper repairs can make the
watercraft unsafe to operate.
Make sure that there is no damage, leakage,
or other problem in the fuel system.
Check:

Carburetor for leakage

Fuel filler cap and seal for damage

Fuel in fuel tank for water and dirt

Fuel tank for damage and leakage

Fuel hoses and joints for damage and leak-
age

Fuel filter for leakage

Fuel cock for leakage

Fuel tank breather hose for damage and
leakage
Releasing the pressure in the fuel tank
Release the pressure in the fuel tank before
each use.
To release the pressure in the fuel tank:
(1) Loosen the fuel filler cap slowly and re-
move it to release any pressure in the fuel
tank.
(2) Install the fuel filler cap and tighten it se-
curely.
EJU32363Fuel level check
Check the fuel level in the fuel tank.
1Fuel filler cap
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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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