Features and functions
36
maximum engine speed is limited to help pre-
vent damage.
If this occurs, immediately reduce the engine
speed, return to shore, and then check the en-
gine oil level. (See page 45 for engine oil level
checking procedures.) If the oil level is suffi-
cient, have a Yamaha dealer check the water-
craft.
TIP:
Push the “Hour Volt” button to stop the buzz-
er.
EJU37300Engine overheat warning
If the engine temperature rises significantly,
the “WARNING” indicator light and the engine
overheat warning indicator blink, and the
buzzer sounds intermittently. Then, the
“WARNING” indicator light and the engine
overheat warning indicator stop blinking and
remain on, and the buzzer sounds continu-ously. After the light and indicator start to blink
and the buzzer sounds, the maximum engine
speed is limited to help prevent damage.
If this occurs, immediately reduce the engine
speed, return to shore, and then check for wa-
ter discharge at the port (left) cooling water pi-
lot outlets while the engine is running. If there
is no discharge of water, shut the engine off,
and then check the jet intake for clogging.
(See page 83 for jet intake cleaning proce-
dures.) NOTICE: If you cannot locate and
correct the cause of the overheating, con-
sult a Yamaha dealer. Continuing to oper-
ate at higher speeds could result in severe
engine damage.
[ECJ00041]
1“Hour Volt” button
1
UF2R70E0.book Page 36 Thursday, November 6, 2008 10:05 AM
Operation
43
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.45
BilgeCheck for water and fuel and drain if necessary. 47
Stern drain plugsCheck for proper installation. 47
Throttle leverCheck that the throttle lever springs back smoothly. 48
Steering systemCheck for proper operation.
Check that the handlebars are locked in place.49
Shift lever and reverse gateCheck for proper operation. 49
QSTSCheck for proper operation. 50
Fuel and oilCheck the fuel and oil levels and replenish if neces-
sary.
Check the hoses and tanks for leakage.45, 45
Water separatorCheck for water and drain if necessary. 46
BatteryCheck the electrolyte level and battery condition. 47
HoodCheck that the hood is securely closed. 24
Front and rear seatsCheck that the seats are securely installed. 23
Hull and deckCheck the hull and deck for cracks and other dam-
age.45
Jet intakeCheck for debris and remove if necessary. 51
Fire extinguisherCheck the condition and replace if necessary. 48
Engine shut-off cord (lan-
yard)Check the condition and replace if frayed or broken. 51
SwitchesCheck the start switch, engine stop switch, and en-
gine shut-off switch for proper operation.51
AFTER LAUNCH
Cooling water pilot outletCheck that water is discharged while the engine is
running and the watercraft is in the water.52
Dual analog meter unitCheck for warning indications and proper operation. 52
UF2R70E0.book Page 43 Thursday, November 6, 2008 10:05 AM
Operation
45
EJU32280Pre-operation check points EJU32331Engine compartment
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.
Ventilate the engine compartment before
each use.
To ventilate the engine compartment, remove
the seats. (See page 23 for seat 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.
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.
EJU36871Fuel level
Make sure that there is sufficient fuel in the
fuel tank before each use.
Also, check the fuel system for leakage,
cracks, and malfunctions. (See page 72 for
check points and correct procedures.)
(1) Open the hood and remove the fuel tank
filler cap to release any pressure thatmight have built up in the fuel tank. (See
page 24 for hood opening and closing
procedures.)
(2) Remove the seats. (See page 23 for seat
removal and installation procedures.)
(3) Check the fuel level in the fuel tank and
replenish if necessary. (See page 41 for
filling procedures.)
(4) Install the fuel tank filler cap, and then
close the hood and install the seats.
EJU36882Engine oil level
Check the engine oil level before each use.
WARNING
EWJ00340
Engine oil is extremely hot immediately af-
ter the engine is turned off. Coming in con-
tact with or getting any engine oil on your
clothes could result in burns.
NOTICE
ECJ01001
Make sure that debris and water do not en-
ter the oil filler hole. Debris and water in
the engine oil can cause serious engine
damage.
To check the engine oil level:
(1) Place the watercraft in a precisely level
position on land with the engine stopped.
TIP:
If the engine was running, allow the engine oil
to settle by waiting 5 minutes or more before
checking the oil level.
(2) Remove the seats. (See page 23 for seat
removal and installation procedures.)
(3) Remove the dipstick, wipe it clean, and
then insert it back into the dipstick tube
completely. Remove the dipstick again
and check that the engine oil level is be-
UF2R70E0.book Page 45 Thursday, November 6, 2008 10:05 AM
Operation
51
EJU32651Jet intake
Carefully check the jet intake for weeds, de-
bris, or anything else that might restrict the in-
take of water. If the jet intake is clogged, clean
it. (See page 83 for jet intake cleaning proce-
dures.)
If the watercraft is operated while the jet in-
take is clogged, cavitation could occur, reduc-
ing jet thrust, and possibly damaging the jet
pump. In some cases, the engine may over-
heat because of lack of cooling water, and
damage to the engine could result. Cooling
water is fed to the engine by the jet pump.
EJU32661Engine shut-off cord (lanyard)
Check that the engine shut-off cord (lanyard)
is not frayed or broken. If the cord is dam-
aged, replace it. WARNING! Never try to re-
pair the engine shut-off cord (lanyard) or
tie it together. The engine shut-off cord
(lanyard) may not pull free when the oper-
ator falls off, allowing the watercraft tocontinue to run and cause an accident.
[EWJ01220]
EJU32671
Switches
NOTICE
ECJ00410
Do not run the engine for more than 15
seconds when checking the switches on
land without supplying water, otherwise
the engine could overheat.
Check the start switch, the engine stop
switch, and the engine shut-off switch for
proper operation.
Push the start switch to start the engine. As
soon as the engine starts running, push the
engine stop switch to verify that the engine
stops immediately. Restart the engine, and
then pull the engine shut-off cord (lanyard) to
remove the clip from the engine shut-off
switch to verify that the engine stops immedi-
ately. (See pages 25 to 26 for information on
proper operation of the start switch, the en-
UF2R70E0.book Page 51 Thursday, November 6, 2008 10:05 AM
Operation
52
gine stop switch, and the engine shut-off
switch.)
EJU36890Cooling water pilot outlets
Check that water comes out from the port
(left) cooling water pilot outlets while the en-
gine is running and the watercraft is in the wa-
ter. (See page 27 for more information.)
EJU37450Dual analog meter unit
Check the dual analog meter unit for proper
operation while the watercraft is in the water.(See page 33 for information on proper oper-
ation of the dual analog meter unit.)
1Start switch
2Engine stop switch
3Engine shut-off switch
4Clip
5Engine shut-off cord (lanyard)
4
1 3
5
2
UF2R70E0.book Page 52 Thursday, November 6, 2008 10:05 AM
Operation
54
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
UF2R70E0.book Page 54 Thursday, November 6, 2008 10:05 AM
Operation
55
EJU37181Shifting
WARNING
EWJ01230
Do not use the reverse function to slow
down or stop the watercraft as it could
cause you to lose control, be ejected, or
impact the handlebars.
Make sure that there are no obstacles or
people behind you before shifting into
reverse.
Do not touch the reverse gate while the
shift lever is being operated, otherwise
you could be pinched.
To shift into reverse:
(1) Release the throttle lever and let the en-
gine speed return to idle.
(2) Pull the shift lever toward you.
To shift into forward:
(1) Release the throttle lever and let the en-
gine speed return to idle.(2) Push the shift lever away from you.
EJU32882Leaving the watercraft
If leaving the watercraft, select the lock mode
of the Yamaha Security System and remove
the engine shut-off cord (lanyard) to reduce
the chance of accidental starting or unautho-
rized use by children or others. (See page 31
for Yamaha Security System lock and unlock
mode selection procedures.)
UF2R70E0.book Page 55 Thursday, November 6, 2008 10:05 AM
Maintenance and care
67
EJU33490
Storage
WARNING
EWJ00330
Always place the watercraft upright in a
horizontal position when storing it, other-
wise fuel could leak out into the engine or
engine compartment, which could 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.
EJU37570Flushing the cooling system
Flushing the cooling system is essential to
prevent it from clogging with salt, sand, or dirt.
(1) Place the watercraft in a horizontal posi-
tion.
(2) Remove the rear seat and watertight
compartment. (See page 23 for seat re-
moval and installation procedures.)
(3) 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.(4) Connect the garden hose adapter to a
water tap using a garden hose.
TIP:
A garden hose is not included.
(5) Start the engine, and then immediately
turn the water supply on until water flows
out continually from the jet thrust nozzle.
NOTICE: Do not run the engine for
more than 15 seconds without supply-
ing water or over 4000 r/min on land,
otherwise the engine could overheat.
[ECJ01050]
TIP:
If you will be storing the watercraft for a pro-
longed period, such as winter storage, top off
the fuel tank with fresh gasoline and add fuel
stabilizer and conditioner to the fuel tank ac-
cording to the manufacturer’s instruction be-
fore starting the engine.
(6) 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. NOTICE: Do not sup-
ply water to the cooling water passag-
es when the engine is not running. The
water could flow back through the
muffler into the engine, causing se-
vere engine damage.
[ECJ00122]
(7) Turn the water supply off, and then force
the remaining water out of the cooling
1Flushing hose connector cap
2Garden hose adapter
3Flushing hose connector
1
3 2
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