maintenance YAMAHA SUPERJET 2007 Owners Manual
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Page 5 of 78
Important manual information
EJU30150
To the owner/operator
Thank you for choosing a Yamaha watercraft.
This owner’s/operator’s manual contains in-
formation you will need for proper operation,
maintenance, and care. If you have any ques-
tions about the operation or maintenance of
your watercraft, please consult a Yamaha
dealer.
This manual is not a course on boating safety
or seamanship. If this is your first watercraft,
or if you are changing to a type of watercraft
you are not familiar with, for your own comfort
and safety, please ensure that you obtain
proper training or practice before operating
the watercraft by yourself. In addition, a
Yamaha dealer or boating organization will be
pleased to recommend local sea schools, or
competent instructors.
Because Yamaha has a policy of continuing
product improvement, this product may not be
exactly as described in this owner’s/opera-
tor’s manual. Specifications are subject to
change without notice.
This manual should be considered a perma-
nent part of this watercraft and should remain
with it even if the watercraft is subsequently
sold.
In this manual, information of particular impor-
tance is distinguished in the following ways:
The Safety Alert Symbol means ATTEN-
TION! BECOME ALERT! YOUR SAFETY IS
INVOLVED!
WARNING
EWJ00080
Failure to follow WARNING instructions
could result in severe injury or death
to the
machine operator, a bystander, or a per-
son inspecting or repairing the watercraft.
CAUTION:
ECJ00090
A CAUTION indicates special precautions
that must be taken to avoid damage to the
watercraft.
NOTE:
A NOTE provides key information to make
procedures easier or clearer.
EJU30210
SuperJet
OWNER’S/OPERATOR’S MANUAL
©2006 by Yamaha Motor Co., Ltd.
1st Edition, April 2006
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan
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Page 6 of 78
Table of contents
General and important labels ........... 1
Identification numbers .................... 1
Primary Identification (PRI-ID)
number ........................................... 1
Hull Identification Number (HIN) ........ 1
Engine serial number ........................ 1
Model information ........................... 2
Builder’s plate .................................... 2
Important labels .............................. 3
Warning labels ................................... 4
Other labels ....................................... 7
Safety information ............................. 8
Limitations on who may operate
the watercraft .............................. 8
Cruising limitations ......................... 9
Operation requirements ............... 10
Recommended equipment ........... 12
Hazard information ....................... 13
Watercraft characteristics ............. 13
Safe boating rules ........................ 14
Enjoy your watercraft
responsibly ................................ 15
Features and functions ................... 16
Location of main components ...... 16
Operation of controls and other
functions .................................... 18
Hood ................................................ 18
Fuel tank filler cap ........................... 19
Fuel cock knob ................................ 19
Engine stop switch .......................... 20
Engine shut-off switch ..................... 20
Start switch ...................................... 20
Choke knob ..................................... 20
Throttle lever ................................... 21
Cooling water pilot outlet ................. 21
Steering system ............................... 22
Steering pole ................................... 22
Bow rope hole ................................. 22
Stern rope hole ................................ 23
Engine overheat warning system .... 23
Storage pouch ................................. 24
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 ..................... 36
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 ................... 43
Beaching the watercraft ................... 43
Rough water operation .................... 43
Post-operation care ...................... 44
Transporting ................................. 45
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 ................ 52
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Page 22 of 78
Safety information
15
EJU30990
Enjoy your watercraft
responsibly
You share the areas you enjoy when riding
your watercraft with others and with nature.
So your enjoyment includes a responsibility to
treat these other people, and the lands, wa-
ters, and wildlife with respect and courtesy.
Whenever and wherever you ride, think of
yourself as the guest of those around you. Re-
member, for example, that the sound of your
watercraft may be music to you, but it could be
just noise to others. And the exciting splash of
your wake can make waves others won’t en-
joy.
Avoid riding close to shoreline homes and wa-
terfowl nesting areas or other wildlife areas,
and keep a respectful distance from fisher-
men, other boats, swimmers, and populated
beaches. When travel in areas like these is
unavoidable, ride slowly and obey all laws.
Proper maintenance is necessary to ensure
that the exhaust emission and sound levels of
your watercraft will continue to be within regu-
lated limits. You have the responsibility to
make sure that the recommended mainte-
nance in this owner’s/operator’s manual is
carried out.
Remember, pollution can be harmful to the
environment. Do not refuel or add oil where a
spill could cause damage to nature. Remove
your watercraft from the water and move it
away from the shoreline before refueling. And
keep your surroundings pleasant for the peo-
ple and wildlife that share the waterways:
don’t litter!
When you ride responsibly, with respect and
courtesy for others, you help ensure that our
waterways stay open for the enjoyment of a
variety of recreational opportunities.
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Page 29 of 78
Features and functions
22
EJU35930Steering system
Your watercraft can be steered by turning the
handlebars in the direction you wish to travel.
When the handlebars are turned, the angle of
the jet thrust nozzle is changed, and the direc-
tion of the watercraft is changed accordingly.
Since the strength of the jet thrust determines
the speed and degree of a turn, throttle must
always be applied when attempting a turn, ex-
cept at trolling speed.
The angle of the jet thrust nozzle can be ad-
justed to suit operator preference. (See page
53 for adjustment procedures.)
EJU31270Steering pole
The steering pole varies in height with the op-
erator’s posture, enabling the operator to as-
sume various riding positions.
When removing the hood for pre-operation
checks, maintenance, etc., lift the steering
pole and use the lock pin to support it. Move
the lock pin into the detent. Make sure that the
lock pin is returned to the stowed position af-
ter installing the hood.
EJU36000Bow rope hole
The bow rope hole is located at the bow of the
watercraft.
1Handlebar
2Jet thrust nozzle
1Steering pole
2Lock pin
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Maintenance and care
46
EJU33480
Storage
WARNING
EWJ00320
Always turn the fuel cock knob to “OFF”
when storing the watercraft, otherwise
fuel could leak out into the engine or en-
gine compartment, which would create a
fire hazard.
Storage for long periods of time, such as win-
ter storage, requires preventive maintenance
to ensure against deterioration. It is advisable
to have the watercraft serviced by a Yamaha
dealer prior to storage. However, the following
procedures can be performed by the owner.
EJU33510Flushing the cooling system
Flushing the cooling system is essential to
prevent it from clogging with salt, sand, or dirt.
CAUTION:
ECJ00120
Do not supply water to the cooling water
passages when the engine is not run-
ning. The water could flow back through
the muffler into the crankcase, causing
severe engine damage.
Do not run the engine for more than 15
seconds on land without supplying wa-
ter, otherwise the engine could over-
heat.
(1) Remove the watercraft from the water
and place it in a horizontal position.
(2) Remove the flushing hose connector
cap, and then insert the garden hose
adapter into the flushing hose connector
and turn it until it is securely connected.
(3) Connect the garden hose adapter to a
water tap using a garden hose.
NOTE:
A garden hose is not included and must be
purchased separately.
(4) Start the engine, and then immediately
turn the water supply on until water flows
out continually from the cooling water pi-
lot outlet.
(5) 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.
(6) Turn the water supply off, and then force
the remaining water out of the cooling
water passages by alternately squeezing
and releasing the throttle lever for 10 to
15 seconds.
(7) Stop the engine.
1Garden hose adapter
2Flushing hose connector
3Flushing hose connector cap
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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
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Maintenance and care
48
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.
Draining the fuel system prevents buildup of
varnishes and other harmful deposits that re-
sult when gasoline sits for a long period of
time.
To drain the fuel system:
(1) Turn the fuel cock knob to “OFF”.
(2) Drain the fuel tank using a siphon.
EJU33680Battery
If the watercraft will not be used for more than
a month, remove the battery from the water-
craft and store it in a cool, dry place.
(1) Disconnect the negative (–) battery lead
first, then the positive (+) battery lead and
breather hose, and then remove the bat-
tery from the watercraft.
(2) Clean the battery casing using fresh wa-
ter.
(3) If the battery terminals are dirty or corrod-
ed, clean them with a wire brush.
(4) Fully charge the battery.
(5) Apply Yamaha Marine Grease or
Yamaha Grease A to the battery termi-
nals, and then store the battery in a cool,
dry place.
(6) Check the battery at least once every 2
months and fully charge it if necessary.
CAUTION:
ECJ00100
Always keep the battery charged. Storing
a discharged battery can cause permanent
battery damage.
To check the condition of the battery, check
the specific gravity of the electrolyte or mea-
sure the voltage at both battery terminals.Charge the battery if the voltage is less than
12 volts.
It is recommended to have a Yamaha dealer
check the specific gravity and charge the bat-
tery. If you maintain the battery yourself, be
sure to read and follow the instructions provid-
ed with the battery tester and charger you
use.
EJU33700Cleaning the watercraft
Clean the watercraft before storing it for a long
period.
(1) Wash down the hull, handlebars, and jet
unit with fresh water.
(2) Rinse the engine and bilge area with
fresh water. Drain all of the water and
wipe up any remaining moisture with
clean, dry rags.
CAUTION:
ECJ00110
Do not use high-pressure water when rins-
ing the engine and bilge area as severe en-
gine damage could result.
(3) Spray the engine’s exterior with a rust in-
hibitor and lubricant.
(4) Wax the hull with a non-abrasive wax.
(5) Wipe all vinyl and rubber components,
such as the engine compartment seals,
with a vinyl protectant.
NOTE:
Do not use vinyl protectant on the riding tray,
because it will make it slippery.
Specific gravity (for reference):
1.28 at 20 °C (68 °F)
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Maintenance and care
49
EJU33760
Maintenance and adjustments
Periodic inspection, adjustment, and lubrica-
tion will keep your watercraft in the safest and
most efficient condition possible. Safety is an
obligation of the watercraft owner. Proper
maintenance must be carried out to keep the
exhaust emission and sound levels within the
regulated limits. The most important points of
watercraft inspection, adjustment, and lubri-
cation are explained on the following pages.
See a Yamaha dealer for genuine Yamaha re-
placement parts and optional accessories de-
signed for your watercraft.
Remember, failures that are the result of the
installation of parts or accessories which are
not qualitatively equivalent to genuine
Yamaha parts are not covered by the limited
warranty.
Maintenance, replacement, or repair of the
emission control devices and system may
be performed by any marine SI engine re-
pair establishment or individual. Warranty
repair, however, must be performed at an
authorized Yamaha marine dealership.
WARNING
EWJ00310
Be sure to shut the engine off when you
perform maintenance unless otherwise
specified, otherwise an accident or inju-
ry could result from unexpected opera-
tion, moving parts, or electric shock. If
the owner is not familiar with watercraft
servicing, this work should be done by a
Yamaha dealer. Improperly serviced
components could fail or stop operating
correctly, which could result in an acci-
dent.
Modifications to this watercraft not ap-
proved by Yamaha may cause loss of
performance or excessive noise and ex-
haust emissions, or render it unsafe foruse. Consult a Yamaha dealer before at-
tempting any modifications.
EJU33780Owner’s/operator’s manual and tool
kit
It is advisable to always carry the owner’s/op-
erator’s manual and tool kit with you whenev-
er you use the watercraft. For your
convenience, a storage pouch is provided on
the watercraft for the manual and tool kit.
NOTE:
To protect these materials from water dam-
age, it would be a good idea to put them in a
waterproof bag.
The service information included in this man-
ual is intended to provide you, the owner, with
the necessary information for completing your
own preventive maintenance and minor re-
pairs. The tools provided in the tool kit are suf-
ficient for this purpose, except that a torque
1Storage pouch
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Maintenance and care
50
wrench may also be necessary to tighten nuts
and bolts.
1Tool bag
2Screwdriver
314/21 mm box wrench
4Pliers
5Open-end wrench
610/12 mm box wrench
7Garden hose adapter
8Spark plug (one included for each cylinder)
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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—
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