
Operation
46
(1) Launch the watercraft and start the en-
gine. (See page 46 for engine starting
procedures.)
(2) Run the engine at trolling speed for 5 min-
utes.
(3) Gradually apply throttle and run the en-
gine at 5000 r/min or less.
(4) Operate the watercraft at 5000 r/min or
less for the first tankful of fuel.
(5) Fill the fuel tank with straight gasoline,
and then proceed with normal operation.
CAUTION:
ECJ00430
Failure to follow the engine break-in pro-
cedure could result in reduced engine life
or even severe engine damage.
EJU32820Launching the watercraft
When launching the watercraft, make sure
that there are no obstacles around you.
After the watercraft is in the water, turn it
around so that the bow faces the direction you
wish to go. Start the engine, and then slowly
move away from the launching area. If there
are waves, someone should make sure that
the watercraft is not pushed into the trailer af-
ter launching the watercraft.
EJU32840Starting the engine
WARNING
EWJ00560
Never start the engine or let it run for any
length of time in an enclosed area. Ex-
haust fumes contain carbon monoxide, a
colorless, odorless gas that may cause
loss of consciousness and death within a
short time. Always operate the watercraft
in an open area.
(1) Launch the watercraft in water free from
weeds and debris and at least 60 cm (2 ft)
deep.
WARNING
EWJ00570
Never operate in water that is less than 60
cm (2 ft) deep, otherwise you increase
your chance of hitting a submerged ob-
ject, which could result in injury.
CAUTION:
ECJ00470
Never operate in water that is less than 60
cm (2 ft) deep, otherwise pebbles or sand
could be sucked into the jet intake, caus-
ing impeller damage and engine overheat-
ing.
UF1G74E0.book Page 46 Monday, July 31, 2006 10:10 AM

Maintenance and care
60
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.
EJU33520Flushing the cooling system
Flushing the cooling system is essential to
prevent it from clogging with salt, sand, or dirt.
WARNING
EWJ00270
Do not start the engine on land if anyone is
behind the watercraft. Hot water and
steam spurting from the exhaust outlet
into the air can cause serious burns.
CAUTION:
ECJ00130
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.
Do not run the engine over 4000 r/min on
land, otherwise the catalytic converter
could be seriously damaged.
(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 running the engine at
4000 r/min or less for 10 to 15 seconds.
(7) Stop the engine.
(8) Remove the garden hose adapter and in-
stall the flushing hose connector cap.
1Flushing hose connector cap
2Garden hose adapter
3Flushing hose connector
UF1G74E0.book Page 60 Monday, July 31, 2006 10:10 AM

Maintenance and care
61
EJU33580Lubrication
WARNING
EWJ00260
Do not spray flammable rust inhibitor
products on engine surfaces while the en-
gine is hot. The sprayed substance or pro-
pellants could catch fire.
(1) Remove the spark plugs and pour ap-
proximately one tablespoon of engine oil
into each cylinder.
(2) Grease the spark plug threads and rein-
stall the spark plugs.
(3) With the spark plug caps removed from
the spark plugs, crank the engine for 3
seconds or less using the start switch.
(4) Lubricate all cables such as the throttle
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.
(5) Lubricate the areas of the watercraft
specified in “Lubrication points” on page
68.
EJU33651Fuel 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-
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.
Top off the fuel tank with fresh gasoline and
add 470 ml (15.9 US oz, 16.5 Imp oz) of
Yamaha Fuel Stabilizer and Conditioner.
CAUTION:
ECJ00140
Use only Yamaha Fuel Stabilizer and Con-
ditioner, otherwise the catalytic converter
could be seriously damaged.
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.
UF1G74E0.book Page 61 Monday, July 31, 2006 10:10 AM

Maintenance and care
65
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 67
Lubrication pointsLubricate 68
Intermediate hous-
ingLubricate 68
Fuel systemCheck 66
Fuel tankCheck, clean 66
Oil injection sys-
temCheck, clean 66
Throttle shaftCheck—
Cooling water pas-
sagesFlush
*60
Water inlet strain-
erCheck, clean—
Bilge strainerClean—
Electric bilge
pump strainerCheck, clean—
ImpellerCheck—
Jet thrust nozzle
angleCheck, adjust 66
QSTS mechanismCheck, adjust—
Throttle cableCheck, adjust 67
Stern drain plugsCheck, replace 40
BatteryCheck, charge 69
Rubber couplingCheck—
Engine mountCheck—
Nuts and boltsCheck—
UF1G74E0.book Page 65 Monday, July 31, 2006 10:10 AM

Maintenance and care
66
EJU34210Checking the fuel system
WARNING
EWJ00380
Gasoline is highly flammable and explo-
sive. Failure to check for and repair any
fuel leakage could result in a fire or explo-
sion. A fire or explosion can cause severe
injury or death. Shut the engine off. Do not
smoke. Avoid spilling gasoline.
Fuel in the fuel lines is pressurized.
Fuel can spray out and cause injury or a
fire hazard if a fuel line is disconnected.
Do not run the engine with a fuel line dis-
connected.
Check the fuel system for leaks, cracks, and
malfunctions. If any problem is found, consult
a Yamaha dealer.
Check:
Fuel tank filler cap and seal for damage.
Fuel in fuel tank for water and dirt.
Fuel tank for damage, cracks, and leakage.
Fuel hoses and joints for damage, cracks,
and leakage.
Air bleeding passages for leakage.EJU34230Fuel tank
Check the fuel tank for leakage and for water
in the tank. If water is found in the fuel system,
or if the fuel tank needs to be cleaned, have a
Yamaha dealer service the watercraft.
EJU34240Checking the oil injection system
Check the oil injection system for leakage,
cracks, and malfunctions. Have a Yamaha
dealer repair the oil injection system if neces-
sary.
Check:
Oil tank for damage, cracks, and leakage.
Oil in the oil tank for water and dirt.
Oil hoses and joints for damage, cracks,
and leakage.
Oil filter for dirt.
Oil pump for leakage.EJU34250Oil tank
Check the oil tank for leakage and for water in
the tank. If water is found in the oil injection
system, or if the oil tank needs to be cleaned,
have a Yamaha dealer service the watercraft.
EJU34260Oil filter
Have a Yamaha dealer check the oil filter for
dirt and clogs.
EJU34320Checking the jet thrust nozzle angle
Check the handlebars and jet thrust nozzle for
smooth operation.
Turn the handlebars as far as possible to the
right and left and check that the difference of
distances A and B between the jet thrust noz-
zle and the nozzle is within specification.
1Fuel tank
UF1G74E0.book Page 66 Monday, July 31, 2006 10:10 AM

Maintenance and care
71
EJU34490Fuel injection system
The fuel injection system was set at the
Yamaha factory. If the fuel injection system
needs to be adjusted, have a Yamaha dealer
service the watercraft.
CAUTION:
ECJ00220
Do not attempt to adjust the fuel injection
system. If the settings are disturbed by
someone who does not have the neces-
sary technical knowledge, poor engine
performance and damage may result.
EJU34500Checking the trolling speed
(1) Place the watercraft in the water.
(2) Start the engine and warm it up. Use the
tachometer in the multifunction informa-
tion center to check the trolling speed.
If the trolling speed is out of specification,
have a Yamaha dealer service the watercraft.
EJU34520Bleeding the oil pump
If the oil tank becomes completely empty, or
any hose connected to the oil pump has been
disconnected, the oil pump must be bled to
ensure proper oil flow.
If necessary, have a Yamaha dealer bleed the
oil pump.
EJU36190Adjusting the Yamaha Adjustable
Sponsons (YAS)
The Yamaha Adjustable Sponsons can be
adjusted to two positions to enhance water-
craft performance according to operator pref-
erence and operating conditions. (See page
33 for an explanation of the positions.)To adjust the YAS:
(1) Remove the bolts on both sponsons.
(2) Remove the sponsons, and then install
them in the desired position.
NOTE:
Be sure to install both sponsons in the same
position.
(3) Tighten the sponson bolts to the specified
torque. Trolling speed:
1350 ±100 r/min
1Bolt
Sponson bolt tightening torque:
18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
UF1G74E0.book Page 71 Monday, July 31, 2006 10:10 AM

Specifications
72
EJU34540
Specifications
Watercraft capacity:
Maximum people on board:
2 person
Maximum load capacity:
160 kg (353 lb)
Dimensions:
Length:
2930 mm (115.4 in)
Width:
1150 mm (45.3 in)
Height:
1020 mm (40.2 in)
Dry weight:
297 kg (655 lb)
Performance:
Maximum output (according to ISO 8665/SAE
J1228):
114.7 kW@7000 r/min
Maximum fuel consumption:
57.0 L/h (15.1 US gal/h) (12.5 Imp.gal/h)
Cruising range at full throttle:
1.05 hour
Trolling speed:
1350 ±100 r/min
Engine:
Engine type:
2-stroke
Number of cylinders:
3
Engine displacement:
1297.0 cm³
Bore & stroke:
84.0 × 78.0 mm (3.31 × 3.07 in)
Compression ratio:
5.90 :1
Lubrication system:
Oil injection
Cooling system:
Water
Starting system:
Electric
Ignition system:
Digital C.D.I.
Spark plug:
BR8ES-11
Spark plug gap:
1.0–1.1 mm (0.039–0.043 in)Battery capacity:
12 V19.0 Ah
Charging system:
Flywheel magneto
Drive unit:
Propulsion system:
Jet pump
Jet pump type:
Axial flow, single stage
Impeller rotation:
Counterclockwise
Jet thrust nozzle angle:
23.0 °+23.0 °
Jet thrust nozzle trim angle:
-10 °, -5 °, 0 °, 5 °, 10 °
Fuel and oil:
Recommended fuel:
Regular unleaded gasoline
Minimum octane rating (PON):
86
Minimum octane rating (RON):
90
Recommended engine oil:
YAMALUBE 2-W
Fuel tank total capacity:
60.0 L (15.9 US gal) (13.2 Imp.gal)
Engine oil tank capacity:
5.5 L (1.45 US gal) (1.21 Imp.gal)
UF1G74E0.book Page 72 Monday, July 31, 2006 10:10 AM

Trouble recovery
73
EJU34560
Troubleshooting
If you have any trouble with your watercraft, use this section to check for the possible cause.
If you cannot find the cause, or if the procedure for replacement or repair is not described in
this owner’s/operator’s manual, have a Yamaha dealer perform the necessary service.
EJU34580Troubleshooting chart
TROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine does not
start (Starter motor
does not turn over)Engine shut-
off switchClip not in place Install clip
22
Fuse Burned out Replace the fuse and
check wiring78
Battery Run down Recharge 69
Poor terminal con-
nectionsTighten as required
69
Terminal corroded Clean 61
Starter motor Faulty Have serviced by
Yamaha dealer—
Warning sys-
temOverheat mode Cool down engine
29
Engine does not
start (Starter motor
turns over)Throttle lever Squeezed Release 23
Fuel Empty Refill as soon as pos-
sible36
Stale or contaminat-
edHave serviced by
Yamaha dealer66
Fuel tank Water or dirt present Have serviced by
Yamaha dealer66
Spark plug Fouled or defective Clean or replace 67
Spark plug
capNot connected or
looseConnect properly
67
Crankcase Filled with water Crank engine with
plug out until clean79
Fuel injec-
tion systemFuel pump faulty Have serviced by
Yamaha dealer—
Water tem -
perature sen-
sorFailed Have serviced by
Yamaha dealer 29
UF1G74E0.book Page 73 Monday, July 31, 2006 10:10 AM