2008 YAMAHA SUPERJET fuel cap

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
Features and functions ................... 15
Location of main components ...... 15
Operation of controls and
other functions ........................... 17
Hood ................................................ 17
Fuel tank filler cap ........................... 18
Fuel cock knob ................................ 18
Engine stop switch .......................... 19
Engine shut-off switch ..................... 19
Start switch ...................................... 20
Choke knob ..................................... 20
Throttle lever ................................... 20
Cooling water pilot outlet ................. 20
Steering system ............................... 21
Steering pole ................................... 22
Bow rope hole ................................. 22
Stern rope hole ................................ 22
Engine overheat warning system .... 22
Storage pouch ................................. 23
Operation ......................................... 25
Fuel and oil .................................. 25
Gasoline .......................................... 25
2-stroke engine oil ........................... 25
Mixing fuel and oil ............................ 25
Filling the fuel tank .......................... 26
Pre-operation checks ................... 27
Pre-operation check list ................... 27
Pre-operation check points .............. 28
Operation ..................................... 33
Engine break-in ............................... 33
Launching the watercraft ................. 33
Starting the engine .......................... 33
Stopping the engine ........................ 35
Leaving the watercraft ..................... 35
Operating your watercraft ............ 36
Getting to know your watercraft ....... 36
Learning to operate
your watercraft ............................. 36
Operating positions ......................... 37
Starting the watercraft ..................... 38
Boarding and starting
in deep water ............................... 39
Capsized watercraft ......................... 40
Turning the watercraft ..................... 41
Stopping the watercraft ................... 42
Beaching the watercraft ................... 43
Rough water operation .................... 43
Post-operation care ...................... 43
Transporting ................................. 44
Maintenance and care .................... 46
Storage ........................................ 46
Flushing the cooling system ............ 46
Lubrication ....................................... 47
Fuel system ..................................... 47
Battery ............................................. 48
Cleaning the watercraft ................... 48
Maintenance and adjustments ..... 49
Owner’s/operator’s manual and
tool kit ........................................... 49
Periodic maintenance chart ............. 51
Checking the fuel system ................ 53
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Features and functions
15
EJU31010
Location of main components
1Bow rope hole
2Steering pole
3Steering pole cover
4Hood
5Cooling water pilot outlet
6Fuel tank filler cap
7Ride plate
8Jet thrust nozzle
9Stern rope hole
10Riding tray
11Hood latch
12Handlebars
13Storage pouch
14Jet intake
15Intake grate
16Drive shaft
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Features and functions
16
1Fire extinguisher container
2Fuel cock knob
3Choke knob
4Clip
5Start switch
6Throttle lever
7Engine shut-off switch
8Engine stop switch
9Engine shut-off cord (lanyard)
10Bow
11Fuel tank
12Battery
13Silencer
14Spark plugs/Spark plug caps
15Muffler
16Water separator
17Fuel filter
18Flushing hose connector
19Electrical box
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Features and functions
18
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.
NOTE:
Make sure that the hood is properly secured
before operating the watercraft.
EJU31090Fuel tank filler cap
To remove the fuel tank filler cap, turn it coun-
terclockwise.
NOTE:
Make sure that the fuel tank filler cap is se-
curely closed before operating the watercraft.
EJU31120Fuel cock knob
The fuel cock supplies fuel from the fuel tank
to the carburetors.
1Fuel tank filler cap
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Operation
25
EJU31790
Fuel and oil EJU31831Gasoline
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-
line in your eyes, get immediate medical
attention.

If any gasoline spills on your skin or
clothing, immediately wash the affected
area with soap and water and change
your clothes.
CAUTION:
ECJ00310
Use only fresh gasoline that has been
stored in clean containers.
EJU31860Gasohol
There are two types of gasohol: gasohol con-
taining ethanol and that containing methanol.
Gasohol containing ethanol can be used if
ethanol content does not exceed 10% and the
fuel meets the minimum octane ratings.
Gasohol containing methanol is not recom-
mended by Yamaha because it can cause
fuel system damage and engine performance
problems.
EJU318702-stroke engine oil
If YAMALUBE 2-W engine oil is not available,
another 2-stroke engine oil with an NMMA-
certified TC-W3 rating may be used.
EJU31900Mixing fuel and oil
CAUTION:
ECJ00330

Avoid using any mixture of gasoline and
oil other than those specified.

Make sure that the gasoline and oil are
thoroughly mixed in the correct ratio,
otherwise the following problems may
occur. Too little oil in the fuel-to-oil ratio
could result in major engine trouble,
such as seizure. Too much oil in the fuel-Recommended gasoline:
Regular unleaded gasoline with a mini-
mum octane rating of
86 (Pump octane number) = (R +
M)/2
90 (Research octane number)
Recommended engine oil:
YAMALUBE 2-W or TC-W3 outboard
motor oil or equivalent
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Operation
26
to-oil ratio could result in fouled spark
plugs, smoky exhaust, and heavy car-
bon deposits.
Pour 2-stroke engine oil into a clean contain-
er, and then add gasoline. To mix them thor-
oughly, shake the container from side to side.
EJU31910Filling the fuel tank
CAUTION:
ECJ00290
Be careful when refueling. Avoid getting
water and other contaminants in the fuel
tank. Contaminated fuel can cause poor
running and engine damage.
(1) Lift the steering pole and support it with
the lock pin.
(2) Remove the hood. (See page 17 for hood
removal and installation procedures.)
(3) Remove the fuel tank filler cap, and then
slowly add the premixed fuel to the fueltank. Stop filling when the fuel level just
reaches the bottom of the filler tube.
(4) Install the fuel tank filler cap and the
hood.
NOTE:

The hood must be removed in order to view
the fuel level in the fuel tank while adding fu-
el.

Be careful not to spill fuel or overfill the fuel
tank.

Do not fill up the filler tube because fuel ex-
pands as it warms up and could overflow.
12-stroke engine oil
2Gasoline
Fuel-to-oil ratios (gasoline to oil)
Break-in period (first two tankfuls):
25 : 1
After break-in:
50 :1
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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Operation
28
EJU32280Pre-operation check points EJU32290Engine compartment
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.
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.
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.
EJU32360Fuel system
Check the fuel system for leakage, cracks,
and malfunctions before each use. (See page
53 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 26 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
33
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.
EJU32751Engine break-in
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.
CAUTION:
ECJ00421

For the first 2 tankfuls of fuel, premix the
fuel in a fuel-to-oil ratio of 25:1.

After break-in, premix the fuel in a fuel-
to-oil ratio of 50:1 for normal operation.
(1) Launch the watercraft, start the engine,
and then board the watercraft. (See page
33 for engine starting procedures.)
(2) Run the engine at the lowest possible
speed for 5 minutes.
(3) Gradually apply throttle to 3/4 or less.
(4) Operate the watercraft at 3/4 throttle or
less for the first tankful of fuel.
(5) Fill the fuel tank once more with fuel in a
fuel-to-oil ratio of 25:1, and then proceed
with normal operation.
CAUTION:
ECJ00430
Failure to follow the engine break-in pro-
cedure could result in reduced engine life
or even severe engine damage.
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.
EJU32831Starting the engine
WARNING
EWJ00560
Never start the engine or let it run for any
length of time in an enclosed area. Ex-
haust fumes contain carbon monoxide, a
colorless, odorless gas that may cause
loss of consciousness and death within a
short time. Always operate the watercraft
in an open area.
NOTE:
If the watercraft has been sitting for a while,
remove the fuel tank filler cap to release any
built-up pressure in the fuel tank due to fuel
expansion, and then install the filler cap be-
fore starting the engine.
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