Table of contents
Operating in weeded areas ............. 72
Post-operation care ...................... 72
Transporting ................................. 73
Maintenance and care ..................... 74
Storage ......................................... 74
Flushing the cooling system ............ 74
Lubrication ....................................... 75
Battery ............................................. 75
Cleaning the watercraft ................... 75
Maintenance and adjustments ..... 76
Owner’s/operator’s manual and
tool kit ........................................... 76
Periodic maintenance chart ............. 77
Checking the fuel system ................ 79
Engine oil and oil filter ..................... 79
Air filter element .............................. 79
Checking the jet thrust nozzle
angle ............................................ 79
Checking the shift cable .................. 80
Checking and adjusting the throttle
cable ............................................ 80
Cleaning and adjusting the spark
plugs ............................................ 82
Lubrication points ............................ 84
Checking the battery ....................... 86
Fuel injection system ....................... 87
Specifications .................................. 88
Specifications ................................ 88
Trouble recovery ............................. 89
Troubleshooting ........................... 89
Troubleshooting chart ...................... 89
Emergency procedures ................ 92
Cleaning the jet intake and
impeller ........................................ 92
Jumping the battery ......................... 93
Replacing the fuses ......................... 93
Towing the watercraft ...................... 95
Submerged watercraft ..................... 95
UF2H70E0.book Page 2 Thursday, January 15, 2009 10:49 AM
Features and functions
24
Engine compartment
6 5
7
10 9
8
2143
1Engine cover
2Air filter case
3Water separator
4Fuel tank
5Battery
6Flushing hose connector
7Spark plug cap
8Electrical box
9Engine oil filler cap
10Dipstick
UF2H70E0.book Page 24 Thursday, January 15, 2009 10:49 AM
Features and functions
27
System ” on page 34 for information on using
the remote control transmitter.)
The Yamaha Security System and low-RPM
mode settings can only be selected using the
remote control transmitter.
Store the remote control transmitter carefully
so it will not be lost. When operating the wa-
tercraft, store the transmitter in the transmitter
holder provided in the watertight compart-
ment.
NOTICE
ECJ00751
The remote control transmitter is not
completely waterproof. Do not sub-
merge the transmitter or operate it un-
derwater. If the transmitter is
submerged, dry it with a soft, dry cloth,
and then check that it is operating prop-
erly. If the transmitter is not operating
properly, contact a Yamaha dealer.
Keep the remote control transmitter
away from high temperatures and do not
place it in direct sunlight.
Do not drop the remote control transmit-
ter, subject it to strong shocks, or place
any heavy items on it.
Use a soft, dry cloth to clean the remote
control transmitter. Do not use deter-
gent, alcohol, or other chemicals.
Do not attempt to disassemble the re-
mote control transmitter yourself. Other-
wise, the transmitter may not operate
properly. If the transmitter needs a new
battery, contact a Yamaha dealer.
TIP:
While the engine is running, input from the
remote control transmitter is not received.
If you accidentally lose your remote control
transmitter, contact a Yamaha dealer.
EJU31150Engine stop switch
Push the engine stop switch (red button) to
stop the engine normally.
EJU31161Engine shut-off switch
Attach one end of the engine shut-off cord
(lanyard) to your left wrist, and then insert the
clip on the other end under the engine shut-off
switch (black button). The engine will stop au-
tomatically when the clip is removed from the
1Transmitter holder
1
1Engine stop switch
1
UF2H70E0.book Page 27 Thursday, January 15, 2009 10:49 AM
Features and functions
44
Voltmeter
The voltmeter is provided to display the volt-
age of the battery.
When the battery voltage is normal, the volt-
meter displays approximately 12 volts.
If the battery voltage is less than 8.0 volts,
“LO” is displayed on the voltmeter and if the
voltage is above 18.1 volts, “HI” is displayed
on the voltmeter. If “HI” or “LO” is displayed,
return to shore and, if necessary, have a
Yamaha dealer check the charging system
and the battery.
EJU36811Fuel level warning indicator
If the fuel remaining in the fuel tank drops to
about 18 L (4.8 US gal, 4.0 Imp. gal), the low-
est two fuel level segments, the fuel level
warning indicator, and the “WARNING” indi-
cator light begin to blink. The buzzer also
starts sounding intermittently.
If this occurs, refill the fuel tank as soon as
possible.
The warning signals will be cleared when the
engine is restarted after the fuel tank is re-
filled.
TIP:
Press any button on the multifunction informa-
tion center to stop the buzzer.
EJU35122Oil pressure warning indicator
If the oil pressure does not rise to specifica-
tion, the “WARNING” indicator light and the oilpressure warning indicator begin to blink, and
the buzzer sounds intermittently. At the same
time, the engine speed is limited to help pre-
vent damage.
If this occurs, reduce the engine speed, return
to shore, and then check the engine oil level.
(See page 52 for engine oil level checking
procedures.) If the oil level is low, add enough
engine oil to raise it to the proper level. If the
oil level is sufficient, have a Yamaha dealer
check the watercraft.
TIP:
Press any button on the multifunction informa-
tion center to stop the buzzer.
EJU37600Engine overheat warning indicator
This model is equipped with an engine over-
heat warning system.
If the engine starts to overheat, the “WARN-
ING” indicator light and the engine overheat
warning indicator blink, and then come on.
The buzzer also begins to sound intermittent-
ly, and then it sounds continuously. After the
light and indicator start to blink and the buzzer
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Operation
50
EJU31980
Pre-operation checks EJU31991Pre-operation check list
Before operating this watercraft, perform the checks in the following check list.
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.
ITEM ROUTINE PAGE
BEFORE LAUNCH OR OPERATION
Engine compartmentRemove the seats to ventilate the engine compart-
ment. Check for fuel vapors and loose electrical con-
nections.52
BilgeCheck for water and fuel and drain if necessary. 54
Stern drain plugsCheck for proper installation. 54
Throttle leverCheck that the throttle lever springs back smoothly. 55
Steering systemCheck for proper operation.
Check that the handlebars are locked in place.56
Shift lever and reverse gate Check for proper operation. 56
QSTSCheck for proper operation. 57
Fuel and oilCheck the fuel and oil levels and replenish if neces-
sary.
Check the hoses and tanks for leakage.52, 52
Water separatorCheck for water and drain if necessary. 53
BatteryCheck the electrolyte level and battery condition. 54
HoodCheck that the hood is securely closed. 26
Front and rear seatsCheck that the seats are securely installed. 25
Hull and deckCheck the hull and deck for cracks and other dam-
age.52
Jet intakeCheck for debris and remove if necessary. 58
Fire extinguisherCheck the condition and replace if necessary. 55
Engine shut-off cord (lan-
yard)Check the condition and replace if frayed or broken. 58
SwitchesCheck the start switch, engine stop switch, and en-
gine shut-off switch for proper operation.58
AFTER LAUNCH
Cooling water pilot outletCheck that water is discharged while the engine is
running and the watercraft is in the water.59
Multifunction information
centerCheck for warning indications and proper operation. 59
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Operation
54
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
draining water or use a dry cloth to soak up
any water that could spill into the watercraft. If
any water spills into the watercraft, be sure to
wipe it up with a dry cloth. Also, be sure to in-
stall the drain screw after draining the water
separator.
EJU32452Bilge
Check the bilge for moisture and fuel residue.
NOTICE: Excessive water in the engine
compartment can splash into the engine,
which can result in severe damage.
[ECJ00341]
This watercraft is equipped with a convention-
al jet vacuum bilge draining system and an
electric bilge draining system. The electric
bilge draining system is operated when the
engine is running. When excess water reach-
es the water inlet of the electric bilge pump,
the water is discharged from the electric bilge
pilot outlet at the stern.
A small quantity of water will remain in the
bilge and should be drained manually. To
drain any residual water, beach the watercraft
and perform the following procedure.
To drain water from the bilge:
(1) Remove the stern drain plugs.
(2) Raise the bow of the watercraft until the
water drains.(3) After the water has drained, wipe the
bilge with dry rags to make sure that it is
thoroughly dry.
(4) Install the stern drain plugs. NOTICE:
Before installing the stern drain plugs,
clean the drain plug threads to remove
any foreign materials, such as dirt or
sand. Otherwise, the stern drain plugs
could be damaged, allowing water to
enter the engine compartment. Make
sure that the stern drain plugs are
tightened securely before launching
the watercraft. Otherwise, water may
flood the engine compartment and
cause the watercraft to submerge.
[ECJ00361]
EJU32472
Stern drain plugs
Check the stern drain plugs for proper instal-
lation.
EJU32482Battery
Check the battery electrolyte level and check
that the battery has sufficient power to start
the engine easily. 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.
[EWJ01240]
1Electric bilge pilot outlet
1
1Stern drain plugs
1
UF2H70E0.book Page 54 Thursday, January 15, 2009 10:49 AM
Operation
55
Recharge the battery or replace it if it is not in
good condition. (See page 86 for battery re-
charging procedures.)
Also, check that the battery leads are tight-
ened securely and that there is no corrosion
on the battery terminals. Check that the
breather hose is securely connected to the
battery and that it is not pinched. WARNING!
Fire or explosion could result if the breath-
er hose is damaged, obstructed, or not
connected properly.
[EWJ00451]
Make sure that the battery is securely held in
place.
EJU32581Fire extinguisher
Check that there is a full fire extinguisher on
board.
The fire extinguisher container is located in
the seat storage compartment.To open the fire extinguisher container, turn
the cap counterclockwise.
To close the fire extinguisher container, insert
the fire extinguisher into the container, and
then install the cap and tighten it securely.
To check the fire extinguisher, see the instruc-
tions supplied by the fire extinguisher manu-
facturer. Always keep the fire extinguisher in
the fire extinguisher container.
Always carry a fire extinguisher on board. A
fire extinguisher is not standard equipment
with this watercraft. If you do not have one,
contact a Yamaha dealer or a fire extinguisher
dealer to obtain one meeting the proper spec-
ifications.EJU32591Throttle lever
Check the throttle lever for proper operation.
Squeeze and release the throttle lever several
times to make sure that there is no hesitation
in its travel. It should be smooth over the com-
1Positive (+) battery terminal: Red lead
2Negative (–) battery terminal: Black lead
3Breather hose
3
1
2
1Fire extinguisher container
2Fire extinguisher container cap
UF2H70E0.book Page 55 Thursday, January 15, 2009 10:49 AM
Operation
61
pebbles or sand could be sucked into
the jet intake, causing impeller dam-
age and engine overheating.
[ECJ00471]
(3) Attach the engine shut-off cord (lanyard)
to your left wrist, and then attach the clip
to the engine shut-off switch. It is not pos-
sible to start the engine with the clip re-
moved from the engine shut-off switch.
WARNING! Check that the engine
shut-off cord (lanyard) is attached cor-
rectly. If the engine shut-off cord (lan-
yard) is not attached correctly, it may
not pull free when the operator falls
off, allowing the watercraft to continue
to run and cause an accident.
[EWJ00581]
(4) Push the start switch (green button), and
then release it as soon as the engine
starts to run. If the engine does not startin 5 seconds, release the start switch,
wait 15 seconds, and then try again. The
engine will not start if the throttle lever is
squeezed. NOTICE: Never push the
start switch while the engine is run-
ning. 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.
[ECJ01040]
EJU32861
Stopping the engine
To stop the engine, release the throttle lever,
and then push the engine stop switch (red
button). WARNING! You need throttle to
steer. Shutting the engine off can cause
you to hit an obstacle you are attempting
to avoid. A collision could result in severe
injury or death.
[EWJ00601]
1Clip
2Engine shut-off switch
3Engine shut-off cord (lanyard)
31
2
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