2021 YAMAHA SUPERJET warning

Important manual information
EJU30193
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 com-
fort 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.
In this manual, information of particular im-
portance is distinguished in the following
ways:
This is the safety alert symbol. It is used
to alert you to potential personal injury haz-
ards. Obey all safety messages that follow
this symbol to avoid possible injury or death.
EWJ00072
A WARNING indicates a hazardous situa-
tion which, if not avoided, could result in
death or serious injury.
ECJ00092
A NOTICE indicates special precautions
that must be taken to avoid damage to the
watercraft or other property.
TIP:
A TIP provides key information to make pro-
cedures easier or clearer.
EJU45451
Engine data recording
This model’s ECM stores certain engine data
to assist in the diagnosis of malfunctions and
for research, statistical analysis and develop-
ment purposes.
Although the sensors and recorded data will
vary by model, the main data points are:
Engine status and engine performance
data
This data will be uploaded only when a spe-
cial Yamaha diagnostic tool is attached to the
engine, such as when maintenance checks or
service procedures are performed. Engine
data uploaded will be handled appropriately
according to the following Privacy Policy.
Privacy Policy
Yamaha will not disclose this data to a third party except in the following cases. In addi-
tion, Yamaha may provide engine data to a
contractor in order to outsource services re-
lated to the handling of the engine data. Even
in this case, Yamaha will require the contrac-
tor to properly handle the engine data we
provided and Yamaha will appropriately
manage the data.
With the consent of the boat owner
Where obligated by law
For use by Yamaha in litigation
For general Yamaha-conducted research
purposes when the data is not related to an
individual engine or owner
https://www.yamaha-motor.eu/eu/
en/privacy/privacy-policy/
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Table of contents
General and important labels ........... 1Identification numbers .................... 1
Primary Identification (PRI-ID)
number............................................ 1
Craft Identification Number (CIN) ....... 1
Engine serial number.......................... 1
Manufactured date label .................... 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
Description....................................... 16 Watercraft glossary ....................... 16
Location of main components ...... 17
Control function operation ............. 20 Watercraft control functions ......... 20
Engine stop/“L-MODE” switch......... 20
Engine shut-off switch ..................... 20
Start switch ...................................... 20
Throttle lever .................................... 21
Steering system ............................... 21
Steering pole .................................... 22
Cooling water pilot outlet ................. 22
Water separator................................ 22
Watercraft operation....................... 23Watercraft operation modes ......... 23
L-MODE ........................................... 23
Instrument operation ...................... 24Meter............................................. 24
Fuel level meter ................................ 24
Indicator lights .................................. 24
Equipment operation ...................... 26Equipment..................................... 26
Hood................................................. 26
Reboarding holder............................ 28
Bow eye............................................ 28
Stern eyes ........................................ 28
Storage pouch .................................. 28
Fire extinguisher holder .................... 29
Operation and handling
requirements ................................... 31Fuel requirements ......................... 31
Fuel................................................... 31
Engine oil requirements ................ 33
Engine oil .......................................... 33
Draining the bilge water ................ 35
Draining the bilge water on land....... 35
Draining the bilge water on water .... 35
Transporting on a trailer................ 36
First-time operation ........................ 38 Engine break-in............................. 38
Pre-operation checks ..................... 39
Pre-operation checklist .................... 39
Pre-operation check points .......... 41
Pre-launch checks ........................... 41
Post-launch checks.......................... 46
Operation ......................................... 47 Operating your watercraft ............. 47
Getting to know your watercraft....... 47
Learning to operate your
watercraft ...................................... 47
Operating positions .......................... 47
Launching the watercraft ................. 48
Starting the engine on water ............ 48
Stopping the engine ......................... 49
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General and important labels
4
EJU35914Warning labels
If any of these labels are damaged or missing, contact a Yamaha dealer for replacements.
1
2
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Instrument operation
24
EJU45701
Meter
When the meter is activated, all of the fuel
level meter segments and all indicators come
on. After a few seconds, the fuel level meter
displays the remaining amount of fuel and all
indicators go off.
EJU45620Fuel level meter
The fuel level meter shows the amount of fuel
remaining in the fuel tank. The amount of re-
maining fuel is shown using four display seg-
ments, which disappear one at a time as the
fuel level decreases.
TIP:
The accuracy of the fuel level meter varies
depending on the operating conditions. Use
this function as a reference only.
EJU45631Fuel level warning
If the fuel remaining in the fuel tank drops to
about 6.0 L (1.59 US gal, 1.32 Imp.gal), the
lowest fuel level segment blinks.
If the fuel level warning is activated, refill the
fuel tank as soon as possible. (See page 31
for information on filling the fuel tank.)
EJU45641Indicator lights
EJU45650Oil pressure warning
If the oil pressure drops significantly, the
“WARNING” indicator light blinks. At the
1“WARNING” indicator light
2 “L-MODE” indicator light
3 Fuel level meter
1 Fuel level meter
1
2 3
1
1
“WARNING” indicator light
2 “L-MODE” indicator light
1
2
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Instrument operation
25
same time, the maximum engine speed is
limited.
If the oil pressure warning is activated, imme-
diately reduce the engine speed, return to
shore, and then check the engine oil level.
(See page 33 for information on checking the
engine oil level.) If the oil level is sufficient,
have a Yamaha dealer check the watercraft.
EJU45660Engine overheat warning
If the engine temperature rises significantly,
the “WARNING” indicator light comes on.
While the engine overheat warning is activat-
ed, the maximum engine speed is limited.
If the engine overheat warning is activated,
immediately reduce the engine speed, return
to shore, and then make sure that water 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 72 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.
[ECJ00042]
EJU45681
Check engine warning
If a sensor malfunction or a short circuit is de-
tected, the “WARNING” indicator light blinks
once for several seconds.
If the check engine warning is activated, im-
mediately reduce the engine speed, return to
shore, and have a Yamaha dealer check the
engine.
EJU45690Communication disconnecting warning
If communication disconnecting is detected,
the “WARNING” indicator light and “L-
MODE” indicator light blink.
If the communication disconnecting warning
is activated, have the watercraft serviced by
a Yamaha dealer as soon as possible.
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Pre-operation checks
42
EJU41561Engine oil level check
Make sure that the engine oil level is between
the minimum and maximum level marks on
the dipstick attached to the oil tank filler cap.
(See page 33 for information on checking the
engine oil level.)
EJU32456Bilge water check
Make sure that no bilge water has collected in
the engine compartment. If bilge water has
collected in the engine compartment, drain it.
(See page 35 for information on draining the
bilge water.)
EJU32488Battery checks
Make sure that the battery terminals are not
damaged and that the battery leads are con-
nected properly. WARNING! 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 pow-
er. Loss of battery power may leave you
stranded.
[EWJ01242]
Make sure that the battery is securely held in
place.
EJU32614Steering system checks
Turn the handlebars to the right and left sev-
eral times to make sure that operation is
smooth and unrestricted throughout the
whole range, and that the free play is not ex-
cessive.
Turn the handlebars as far as possible to the
right and left to make sure that the jet thrust
nozzle moves as the handlebars are turned,
and that there is no difference between the
1
Oil tank filler cap/Dipstick
1 Dipstick
2 Maximum level mark
3 Minimum level mark
1
213
1Positive (+) battery terminal: Red lead
2 Negative (–) battery terminal: Black lead
1
2
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Pre-operation checks
44
Make sure that there is the proper amount of
throttle lever free play when the throttle lever
is in the fully closed (idle) position.
EJU32666Engine shut-off cord (lanyard) check
Make sure that the engine shut-off cord (lan-
yard) is not damaged. If the cord is damaged,
replace it. WARNING! Never try to repair
the engine shut-off cord (lanyard) or tie it
together. The engine shut-off cord (lan-
yard) may not pull free when the operator
falls off, allowing the watercraft to contin-
ue to run and cause an accident.
[EWJ01222] EJU45610
Switch checksECJ01361
Do not run the engine for more than 15
seconds on land without supplying water,
otherwise the engine could overheat.
Check the start switch, the engine stop/“L-
MODE” switch, and the engine shut-off
switch for proper operation. (See pages 20 to
20 for information on operating each switch.)
To check the operation of the switches:
(1) Push the start switch to make sure that
the engine starts.
(2) As soon as the engine starts running, push the engine stop/“L-MODE” switch
to make sure that the engine stops im-
mediately.
(3) Restart the engine, and then pull the en- gine shut-off cord (lanyard) to remove
the clip from the engine shut-off switch
to make sure that the engine stops im-
mediately.
EJU41211Storage pouch checks
Make sure that the storage pouch is not dam-
aged and that water has not collected in the
1Throttle lever free play
Throttle lever free play:
3.0–6.0 mm (0.12–0.24 in)
1
1Start switch
2 Engine shut-off switch
3 Clip
4 Engine shut-off cord (lanyard)
5 Engine stop/“L-MODE” switch
3
1
5 4
2
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Operation
48
wake, but the watercraft is moving through
the water rather than skimming on top of it.)
At very slow speeds, it may be necessary to
support your upper-body weight with your el-
bows resting on the gunwales, trailing your
legs in the water.
Standing
After you are comfortable handling the water-
craft from a kneeling position, try standing as
the watercraft gains speed. The watercraft
will become easier to balance as the speed
increases, because jet thrust provides stabil-
ity as well as directional control. When you
are moving slowly, or preparing to stop, you
will probably need to return to the kneeling
position to maintain your balance.
EJU32823Launching the watercraft
When launching the watercraft, make sure
that there are no obstacles around you.If the watercraft is launched from a trailer,
someone should make sure that waves do
not push the watercraft into the trailer.
After the watercraft is in the water, turn it
around so that the bow faces the direction
you wish to go.
EJU43582Starting the engine on waterEWJ01532
Do not apply throttle when anyone is at the
rear of the watercraft. Turn the engine off
or keep it at idle. Water and debris exiting
the jet thrust nozzle can cause severe in-
jury.
To start the engine:
(1) Move the watercraft to an area that is
free from weeds and debris, and has a
water depth of at least 60 cm (2 ft) from
the bottom of the watercraft. NOTICE:
Never run the engine in water that is
less than 60 cm (2 ft) deep from the
bottom of the watercraft, otherwise
pebbles or sand could be sucked into
the jet intake, causing impeller dam-
age and engine overheating.
[ECJ00473]
(2) Attach the engine shut-off cord (lanyard) to your left wrist, and then attach the clip
to the engine shut-off switch. (See page
20 for information on operating the en-
gine shut-off switch.) WARNING! Check
60 cm (2 ft)
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