Maintenance and care
70
water passages by alternately squeezing
and releasing the throttle lever for 10 to
15 seconds.
(8) Stop the engine.
(9) Remove the garden hose adapter and in-
stall the flushing hose connector cap.
(10) Install the watertight compartment and
the rear seat.
EJU36911Lubrication
(1) Lubricate all cables such as the throttle
and steering cables.
Use a suitable marine grease applicator
to pressure-lubricate the cables and
purge out any moisture between the inner
and outer cables.
(2) Lubricate the areas of the watercraft
specified in “Lubrication points” on page
77.
EJU33681Battery
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.
(2) Clean the battery casing using fresh wa-
ter.
(3) If the battery terminals are dirty or corrod-
ed, clean them with a wire brush.
(4) Fully charge the battery.
(5) Apply Yamaha Marine Grease or
Yamaha Grease A to the battery termi-
nals, and then store the battery in a cool,
dry place.
(6) Check the battery at least once every 2
months and fully charge it if necessary.
NOTICE: Always keep the battery
charged. Storing a discharged batterycan cause permanent battery damage.
[ECJ00101]
To check the condition of the battery, check
the specific gravity of the electrolyte or mea-
sure the voltage at both battery terminals.
Charge the battery if the voltage is less than
12 volts.
It is recommended to have a Yamaha dealer
check the specific gravity and charge the bat-
tery. If you maintain the battery yourself, be
sure to read and follow the instructions provid-
ed with the battery tester and charger you
use.
EJU33731Cleaning the watercraft
Clean the watercraft before storing it for a long
period.
(1) Wash down the hull, handlebars, and jet
unit with fresh water.
(2) Rinse the engine and engine compart-
ment with fresh water. Drain all of the wa-
ter and wipe up any remaining moisture
with clean, dry rags. NOTICE: Do not
use high-pressure water when rinsing
the engine and engine compartment
as severe engine damage could result.
[ECJ00111]
(3) Spray the engine’s exterior with a rust in-
hibitor and lubricant.
(4) Wax the hull with a non-abrasive wax.
(5) Wipe all vinyl and rubber components,
such as the seat and engine compart-
ment seals, with a vinyl protectant. Specific gravity (for reference):
1.28 at 20 °C (68 °F)
UF2C70E0.book Page 70 Monday, November 3, 2008 10:16 AM
Maintenance and care
73
*1 This operation should be performed after every use.
*2 This operation should be performed before long-term storage.
BatteryCheck, charge 78
Rubber couplingCheck—
Engine mountCheck—
Nuts and boltsCheck—
Air filter elementCheck 74
Engine oilReplace
50 hours or 12 months74
Oil filterReplace 74
Valve clearanceCheck, adjust— Item OperationInitial Thereafter every
Page 10
hours50
hours100
hours100
hours200
hours
6
months12
months12
months24
months
UF2C70E0.book Page 73 Monday, November 3, 2008 10:16 AM
Maintenance and care
78
Throttle cable (handlebar end)
Steering cable (handlebar end)
Steering cable (jet thrust nozzle end)
QSTS rod (jet thrust nozzle end)
Shift cable (reverse gate end)
Intermediate housing
Fill the intermediate housing with water-re-
sistant grease through the grease nipple
using a grease gun.
EJU34452Checking the battery
Check the level of the battery electrolyte and
make sure that the negative (–) and positive
(+) battery leads are tightened securely.
Grease quantity:
Initial 10 hours or 1 month:
33.0–35.0 cm³ (1.12–1.18 US oz,
1.16–1.23 Imp.oz)
Every 100 hours or 12 months:
6.0–8.0 cm³ (0.20–0.27 US oz,
0.21–0.28 Imp.oz)
1Grease nipple
1
UF2C70E0.book Page 78 Monday, November 3, 2008 10:16 AM
Maintenance and care
79
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.
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.
1Maximum level mark
2Minimum level mark
UF2C70E0.book Page 79 Monday, November 3, 2008 10:16 AM
Maintenance and care
80
(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]
EJU34491
Fuel injection system
If the fuel injection system is malfunctioning,
have a Yamaha dealer service the watercraft.
EJU37500Checking the trolling speed
(1) Place the watercraft in the water.
(2) Start the engine and warm it up. Use the
tachometer in the dual analog meter unit
to check the trolling speed.
If the trolling speed is out of specification,
have a Yamaha dealer service the watercraft.
1Negative (–) battery terminal: Black lead
2Positive (+) battery terminal: Red lead
3Breather hose
Trolling speed:
1250 ±100 r/min
12
3
UF2C70E0.book Page 80 Monday, November 3, 2008 10:16 AM
Specifications
81
EJU34542
Specifications
Watercraft capacity:
Maximum people on board:
3 person
Maximum load capacity:
240 kg (530 lb)
Dimensions:
Length:
3370 mm (132.7 in)
Width:
1230 mm (48.4 in)
Height:
1160 mm (45.7 in)
Dry weight:
369 kg (813 lb)
Performance:
Maximum output (according to ISO 8665/SAE
J1228):
154.50 kW@7500 r/min
Maximum fuel consumption:
67.3 L/h (17.8 US gal/h, 14.8 Imp.gal/h)
Cruising range at full throttle:
1.04 hour
Trolling speed:
1250 ±100 r/min
Engine:
Engine type:
Liquid cooled 4-stroke, DOHC
Number of cylinders:
4
Engine displacement:
1812 cm³
Bore & stroke:
86.0 × 78.0 mm (3.39 × 3.07 in)
Compression ratio:
8.6 : 1
Valve clearance-intake (cold):
0.14–0.23 mm (0.0055–0.0091 in)
Valve clearance-exhaust (cold):
0.28–0.37 mm (0.0110–0.0146 in)
Lubrication system:
Wet sump
Cooling system:
Water
Starting system:
Electric
Ignition system:
T.C.I.Spark plug:
LFR6A
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Battery capacity:
12 V, 19.0 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:
24.0+24.0 °
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 type SAE:
SAE 10W-30, 10W-40, 20W-40, 20W-50
Recommended engine oil grade API:
API SE,SF,SG,SH,SJ,SL
Fuel tank total capacity:
70 L (18.5 US gal, 15.4 Imp.gal)
Engine oil quantity with oil filter replacement:
3.1 L (3.28 US qt, 2.73 Imp.qt)
Engine oil quantity without oil filter replacement:
3.0 L (3.17 US qt, 2.64 Imp.qt)
Engine oil total quantity:
4.3 L (4.55 US qt, 3.78 Imp.qt)
UF2C70E0.book Page 81 Monday, November 3, 2008 10:16 AM
Trouble recovery
82
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.
EJU36982Troubleshooting chart
TROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine does not
start (Starter motor
does not turn over)Yamaha Se-
curity SystemLock mode selected Select unlock mode
33
Engine shut-
off switchClip not in place Install clip
26
Fuse Burned out Replace fuse and
check wiring86
Battery Run down Recharge 78
Poor terminal con-
nectionsTighten as required
78
Terminal corroded Clean 70
Starter motor Faulty Have serviced by
Yamaha dealer—
Engine does not
start (Starter motor
turns over)Throttle lever Squeezed Release 27
Fuel Empty Refill as soon as pos-
sible43
Stale or contaminat-
edHave serviced by
Yamaha dealer74
Fuel tank Water or dirt present Have serviced by
Yamaha dealer74
Spark plug Fouled or defective Clean or replace 76
Spark plug
capNot connected or
looseConnect properly
76
Connected to wrong
cylinderConnect properly
76
Fuel injec-
tion systemFuel pump faulty Have serviced by
Yamaha dealer—
UF2C70E0.book Page 82 Monday, November 3, 2008 10:16 AM
Trouble recovery
86
(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.
EJU34662Connecting 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 engine hanger.
(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]
EJU36991
Replacing the fuses
The fuses are located in the electrical box.
To replace a fuse:
(1) Remove the seats. (See page 24 for seat
removal and installation procedures.)
1Negative (–) jumper cable
2Positive (+) jumper cable
3Booster battery
4Engine hanger
2
3 1
4
UF2C70E0.book Page 86 Monday, November 3, 2008 10:16 AM