2009 YAMAHA SUPERJET warning

Maintenance and care
57
nents. Have a Yamaha dealer lubricate the
handlebar pivot shaft.

Intermediate housing
Fill the intermediate housing with water-re-
sistant grease through the grease nipple
using a grease gun.
EJU34440Adjusting the choke cable
Check that the choke cable is properly adjust-
ed.
(1) Pull the choke knob out until it stops, and
then release the knob. The knob should
not move.(2) If the choke knob moves back on its own,
tighten the choke knob adjusting nut
slightly. If the knob is difficult to move,
loosen the adjusting nut slightly.
EJU34452Checking the battery
Check the level of the battery electrolyte and
make sure that the negative (–) and positive
(+) battery leads are tightened securely.
WARNING
EWJ00791
Battery electrolyte is poisonous and dan-
gerous, causing severe burns, etc. Elec-
trolyte contains sulfuric acid. Avoid
contact with skin, eyes, or clothing.
Antidotes
External: Flush with water.
Internal: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten
egg, or vegetable oil. Call a physician im-
mediately.
Eyes: Flush with water for 15 minutes and
get prompt medical attention.
Batteries produce explosive gases. Keep
sparks, flames, cigarettes, etc., well away.
If using or charging the battery in an en-
closed space, make sure that it is well ven-
tilated. Always shield your eyes when
working near batteries.
Keep out of the reach of children.
Grease quantity:
Initial 10 hours or 1 month:
20.0–22.0 cm³ (0.68–0.74 US oz,
0.71–0.78 Imp.oz)
Every 100 hours or 12 months:
3.0–5.0 cm³ (0.10–0.17 US oz,
0.11–0.18 Imp.oz)
1Choke knob adjusting nut
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Maintenance and care
58
To remove the battery:
Disconnect the negative (–) battery lead first,
then the positive (+) battery lead and breather
hose, and then remove the battery from the
watercraft.
To replenish the battery:
(1) Make sure that the electrolyte level is be-
tween the maximum and minimum level
marks.
(2) If the electrolyte level is low, add distilled
water to raise it to the specified level.
NOTICE: Use only distilled water for
replenishing the battery, otherwise
battery life could be shortened.
[ECJ00241]
To recharge the battery:
NOTICE
ECJ00250
Do not attempt to charge a battery hastily.
Battery life could be shortened.
It is recommended to have a Yamaha dealer
charge the battery. If you charge the battery
yourself, be sure to read and follow the in-
structions provided with the battery tester and
charger you use.
To install the battery:
(1) Place the battery in the battery compart-
ment. Connect the red lead to the positive
(+) battery terminal, and then connect the
black lead to the negative (–) battery ter-minal. NOTICE: Reversal of the battery
leads will damage the electrical parts.
[ECJ00261]
(2) Connect the breather hose to the battery.
(3) Secure the battery in place. WARNING!
Fire or explosion could result if the
breather hose is damaged, obstruct-
ed, or not connected properly.
[EWJ00451]
EJU34462
Adjusting the carburetor
NOTICE
ECJ00172
If the carburetor settings are disturbed by
someone who does not have the neces-
sary technical knowledge, poor engine
performance and damage may result.
The carburetor is a vital part of the engine and
requires very sophisticated adjustments.
Most adjustments should be left to a Yamaha
dealer who has the professional knowledge
and experience to make them.
However, the operator may adjust the trolling
speed as part of the usual maintenance rou-
tine.
EJU34470Adjusting the trolling speed
(1) Place the watercraft in the water.
(2) Start the engine and warm it up for 1 to 2
minutes.
1Maximum level mark
2Minimum level mark
1Positive (+) battery terminal: Red lead
2Negative (–) battery terminal: Black lead
3Breather hose
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Trouble recovery
63
EJU34620
Emergency procedures EJU34631Cleaning the jet intake and impeller
WARNING
EWJ00780
Before attempting to remove weeds or de-
bris from the jet intake or impeller area,
shut the engine off and remove the clip
from the engine shut-off switch. Severe in-
jury or death could result from coming in
contact with the rotating parts of the jet
pump.
If weeds or debris gets caught in the jet intake
or impeller, cavitation can occur, causing jet
thrust to decrease even though engine speed
rises. If this condition is allowed to continue,
the engine will overheat and may seize.
NOTICE: If weeds or debris gets caught in
the jet intake, do not operate the watercraft
above trolling speed until they have been
removed.
[ECJ00651]
If there is any sign that the jet intake or impel-
ler is clogged with weeds or debris, return to
shore and check the intake and impeller. Al-ways stop the engine before beaching the wa-
tercraft.
(1) Place a suitable clean cloth or carpeting
underneath the watercraft to protect it
from abrasions and scratches. Turn the
watercraft on its side as shown. NOTICE:
Always turn the watercraft over onto
its port (left) side. When turning the
watercraft on its side, support the bow
so that the handlebars are not bent or
damaged.
[ECJ00661]
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Trouble recovery
64
(2) Remove any weeds or debris from
around the jet intake, drive shaft, impel-
ler, jet pump housing, and jet thrust noz-
zle.
If debris is difficult to remove, consult a
Yamaha dealer.
EJU34641Jumping the battery
If the watercraft battery has run down, the en-
gine can be started using a 12-volt booster
battery and jumper cables.
EJU34652Connecting the jumper cables
WARNING
EWJ01250
To avoid battery explosion and serious
damage to the electrical system:

Do not reverse the polarity of the jumper
cables when connecting to the batteries.

Do not connect the negative (–) jumper
cable to the negative (–) terminal of the
watercraft battery.

Do not touch the positive (+) jumper ca-
ble to the negative (–) jumper cable.
(1) Connect the positive (+) jumper cable to
the positive (+) battery terminals of both
batteries.
(2) Connect one end of the negative (–)
jumper cable to the negative (–) battery
terminal of the booster battery.(3) Connect the other end of the negative (–)
jumper cable to an unpainted bolt on the
cylinder head.
(4) Start the engine, and then disconnect the
jumper cables by reversing the steps
above. NOTICE: Never push the start
switch while the engine is running. Do
not operate the start switch for more
than 5 seconds, otherwise the battery
will be discharged and the engine will
not start. Also, the starter motor could
be damaged. If the engine does not
start in 5 seconds, release the start
switch, wait 15 seconds, and then try
again.
[ECJ00481]
EJU34671
Replacing the fuse
The fuse is located in the electrical box.
To replace the fuse:
(1) Remove the cap, and then pull out the
red lead to pull out the fuse holder from
the electrical box.
(2) Open the fuse holder and replace the
fuse with one of the correct amperage.
WARNING! Do not use fuses of higher
amperage than recommended. Substi-
tution with a fuse that has an improper
rating can cause extensive electrical
1Positive (+) jumper cable
2Booster battery
3Negative (–) jumper cable
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Trouble recovery
65
system damage and possible fire.
[EWJ00801]
EJU34702
Towing the watercraft
WARNING
EWJ00811

The operator of the towing boat must
keep speed to a minimum and avoid traf-
fic or obstacles which could be a hazard
to the operator on the watercraft.

The towline should be long enough so
that the watercraft will not collide with
the towing boat when slowing down.
If the watercraft becomes inoperative in the
water, it can be towed to shore.
When the watercraft is towed using a towline,
the operator should ride the watercraft, hold-
ing onto the handlebars and supporting his or
her body weight on the riding tray. This will
help keep the bow of the watercraft out of the
water.
Use a towline that is three times the combined
length of the towing boat and the watercraft.Tow the watercraft using the bow rope hole
only.
Tow the watercraft at 5 mph (8 km/h) or less.
The bow must be kept up out of the water dur-
ing towing to prevent water from entering the
engine compartment.
EJU34731Submerged watercraft
If the watercraft is submerged or flooded with
water, follow the procedure below and consult
a Yamaha dealer as soon as possible. Failure
to do so could result in serious engine dam-
age.
(1) Beach the watercraft and remove the
hood.
(2) Turn the fuel cock knob to “OFF”.
(3) Turn the watercraft over far enough to
drain the water from the engine compart-
ment. NOTICE: Turning the watercraft
on its side with the hood removed
could cause damage to the steering
pole. Use two people to provide
enough support to make sure that the
steering pole is not damaged.
[ECJ00701]
(4) Turn the watercraft upright again.
(5) Have the watercraft inspected by a
Yamaha dealer as soon as possible.
NOTICE: Be sure to have a Yamaha
dealer inspect the watercraft. Other-
wise, serious engine damage could re-
sult.
[ECJ00791]
1Electrical box
2Fuse holder
3Cap
4Fuse
Fuse amperage:
Battery fuse:
10 A
1Bow rope hole
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Index
2-stroke engine oil .................................... 24
B
Battery ................................................ 28, 46
Battery, checking...................................... 57
Battery, jumping ....................................... 64
Beaching the watercraft ........................... 42
Bilge ......................................................... 28
Boarding and starting in deep water ........ 38
Boarding and starting in shallow water .... 37
Bow rope hole .......................................... 22
C
Capsized watercraft ................................. 39
Carburetor, adjusting................................ 58
Choke cable, adjusting ............................. 57
Choke knob .............................................. 20
Cleaning the watercraft ............................ 47
Cooling water pilot outlet .................... 20, 31
Craft Identification Number (CIN) ............... 1
Cruising limitations ..................................... 8
E
Emergency procedures ............................ 63
Engine break-in ........................................ 32
Engine compartment ................................ 27
Engine overheat warning system ............. 22
Engine serial number ................................. 1
Engine shut-off cord (lanyard) .................. 30
Engine shut-off switch .............................. 19
Engine stop switch ................................... 19
Enjoy your watercraft responsibly ............ 14
F
Fire extinguisher....................................... 28
Flushing the cooling system ..................... 45
Fuel and oil............................................... 24
Fuel cock knob ......................................... 18
Fuel filter .................................................. 51
Fuel system .............................................. 27
Fuel system, checking.............................. 51
Fuel tank .................................................. 51
Fuel tank filler cap .................................... 18
Fuel tank, filling ........................................ 25
Fuse, replacing......................................... 64
G
Gasohol .................................................... 24
Gasoline ................................................... 24Getting to know your watercraft ............... 35
H
Hazard information ................................... 12
Hood ......................................................... 17
Hull and deck ........................................... 27
I
Identification numbers ................................ 1
J
Jet intake .................................................. 30
Jet intake and impeller, cleaning .............. 63
Jet thrust nozzle angle, adjusting ............. 53
Jet thrust nozzle angle, checking ............. 51
Jumper cables, connecting ...................... 64
K
Kneeling ................................................... 36
L
Labels, important ........................................ 2
Labels, other .............................................. 6
Labels, warning .......................................... 3
Launching the watercraft .......................... 32
Learning to operate your watercraft ......... 35
Leaving the watercraft .............................. 34
Limitations on who may operate the
watercraft ................................................ 7
Lubrication................................................ 46
Lubrication points ..................................... 56
M
Main components, location of .................. 15
Maintenance and adjustments ................. 47
Mixing fuel and oil .................................... 24
O
Operating in weeded areas ...................... 42
Operating positions .................................. 36
Operating your watercraft ......................... 35
Operation ................................................. 32
Operation of controls and other
functions ............................................... 17
Operation requirements ............................. 9
Owner’s/operator’s manual and tool kit .... 47
P
Periodic maintenance chart ...................... 49
Post-operation care .................................. 42
Pre-operation check list ............................ 26
Pre-operation check points ...................... 27
Pre-operation checks ............................... 26
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