Table of contents
General and important labels ........... 1
Identification numbers .................... 1
Primary Identification (PRI-ID)
number ........................................... 1
Craft Identification Number (CIN) ...... 1
Engine serial number ........................ 1
Model information ........................... 2
Builder’s plate .................................... 2
Important labels .............................. 3
Warning labels ................................... 4
Other labels ....................................... 8
Safety information ........................... 10
Limitations on who may operate
the watercraft ............................ 10
Cruising limitations ....................... 11
Operation requirements ............... 12
Recommended equipment ........... 14
Hazard information ....................... 15
Watercraft characteristics ............. 15
Water-skiing ................................. 17
Safe boating rules ........................ 18
Enjoy your watercraft
responsibly ................................ 19
Features and functions ................... 20
Location of main components ...... 20
Operation of controls and other
functions .................................... 24
Seats ............................................... 24
Hood ................................................ 25
Fuel tank filler cap ........................... 25
Remote control transmitter .............. 25
Engine stop switch .......................... 26
Engine shut-off switch ..................... 26
Start switch ...................................... 27
Throttle lever ................................... 27
Cooling water pilot outlets ............... 28
Steering system ............................... 28
Telescopic steering system ............. 29
Shift lever ........................................ 29
Quick Shift Trim System (QSTS)
selector ........................................ 30Handgrips ........................................ 31
Reboarding grip ............................... 31
Reboarding step .............................. 32
Bow eye ........................................... 32
Stern eyes ....................................... 32
Yamaha Security System ................ 32
Dual analog meter unit .................... 35
Storage compartments .................... 39
Operation ......................................... 43
Fuel and oil .................................. 43
Fuel ................................................. 43
Engine oil ......................................... 44
Pre-operation checks ................... 45
Pre-operation check list ................... 45
Pre-operation check points .............. 47
Operation ..................................... 55
Engine break-in ............................... 55
Launching the watercraft ................. 55
Starting the engine .......................... 55
Stopping the engine ........................ 56
Shifting ............................................ 57
Leaving the watercraft ..................... 57
Operating your watercraft ............ 58
Getting to know your watercraft ....... 58
Learning to operate your
watercraft ..................................... 58
Riding with passengers ................... 59
Starting the watercraft ..................... 59
Boarding and starting in deep
water ............................................ 60
Capsized watercraft ......................... 63
Turning the watercraft ..................... 64
Stopping the watercraft ................... 65
Beaching the watercraft ................... 66
Docking the watercraft ..................... 66
Reverse on waterways .................... 66
Operating in weeded areas ............. 67
Post-operation care ...................... 67
Transporting ................................. 68
Maintenance and care .................... 69
Storage ........................................ 69
Flushing the cooling system ............ 69
UF2C70E0.book Page 1 Monday, November 3, 2008 10:16 AM
Features and functions
20
EJU31010
Location of main components
Front view
1
23
4
5
6
10
9
8
7
1Fuel tank filler cap
2Hood
3Handlebars
4Rear seat
5Front seat
6Footwell
7Bow eye
8Cooling water pilot outlet
9Gunwale
10Sponsons
UF2C70E0.book Page 20 Monday, November 3, 2008 10:16 AM
Features and functions
28
EJU36740Cooling water pilot outlets
This watercraft is equipped with cooling water
pilot outlets on the port (left) and starboard
(right) sides of the watercraft.
When the engine is running, cooling water is
circulated in the engine, and then it is dis-
charged from the pilot outlets.
To check for proper operation of the cooling
system, check that water is being discharged
from the port (left) pilot outlets. If water is not
being discharged from these outlets, cooling
water may not be circulating in the engine.
When this occurs, stop the engine and check
for the cause. (See pages 38 and 85 for more
information.)
TIP:
If the cooling water passages are dry, it will
take about 60 seconds for the water to
reach the outlets after the engine is started.
Water discharge may not be constant at
idle, therefore, open the throttle a little to
check that water discharges properly.
EJU31260Steering system
Your watercraft can be steered by turning the
handlebars in the direction you wish to travel.
When the handlebars are turned, the angle of
the jet thrust nozzle is changed, and the direc-
tion of the watercraft is changed accordingly.
Since the strength of the jet thrust determines
the speed and degree of a turn, throttle must
always be applied when attempting a turn, ex-
cept at trolling speed.
This model is equipped with the Yamaha En-
gine Management System (YEMS) that in-
cludes an off-throttle steering (OTS) system.
It will activate at planing speeds should you
attempt to steer the watercraft after releasing
the throttle lever. The OTS system assists in
turning by continuing to supply some thrust
while the watercraft is decelerating, but you
can turn more sharply if you apply throttle
while turning the handlebars.
The OTS system does not function below
planing speeds or when the engine is off.
1Handlebar
2Jet thrust nozzle
1
2
UF2C70E0.book Page 28 Monday, November 3, 2008 10:16 AM
Features and functions
38
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 47 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 85 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
UF2C70E0.book Page 38 Monday, November 3, 2008 10:16 AM
Operation
45
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.47
BilgeCheck for water and fuel and drain if necessary. 49
Stern drain plugsCheck for proper installation. 49
Throttle leverCheck that the throttle lever springs back smoothly. 50
Steering systemCheck for proper operation.
Check that the handlebars are locked in place.51
Shift lever and reverse gateCheck for proper operation. 51
QSTSCheck for proper operation. 52
Fuel and oilCheck the fuel and oil levels and replenish if neces-
sary.
Check the hoses and tanks for leakage.47, 47
Water separatorCheck for water and drain if necessary. 48
BatteryCheck the electrolyte level and battery condition. 49
HoodCheck that the hood is securely closed. 25
Front and rear seatsCheck that the seats are securely installed. 24
Hull and deckCheck the hull and deck for cracks and other dam-
age.47
Jet intakeCheck for debris and remove if necessary. 53
Fire extinguisherCheck the condition and replace if necessary. 50
Engine shut-off cord (lan-
yard)Check the condition and replace if frayed or broken. 53
SwitchesCheck the start switch, engine stop switch, and en-
gine shut-off switch for proper operation.53
AFTER LAUNCH
Cooling water pilot outletCheck that water is discharged while the engine is
running and the watercraft is in the water.54
Dual analog meter unitCheck for warning indications and proper operation. 54
UF2C70E0.book Page 45 Monday, November 3, 2008 10:16 AM
Operation
53
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 85 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 26 to 27 for information on
proper operation of the start switch, the en-
UF2C70E0.book Page 53 Monday, November 3, 2008 10:16 AM
Operation
54
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 28 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 35 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
UF2C70E0.book Page 54 Monday, November 3, 2008 10:16 AM
Operation
68
(5) Flush the cooling system to prevent it
from clogging with salt, sand, or dirt. (See
page 69 for flushing procedures.)
(6) Rinse the engine and engine compart-
ment with a small amount of water.
NOTICE: Do not use high-pressure
water when rinsing the engine or en-
gine compartment as severe engine
damage could result.
[ECJ00571]
(7) Wipe the engine and engine compart-
ment dry with a clean cloth (repeat step 3,
if necessary).
(8) Wipe the hull, handlebars, and jet unit dry
with a clean cloth.
(9) Spray a rust inhibitor on metallic parts to
minimize corrosion.
(10) Allow the engine compartment to air dry
completely before installing the seats.
EJU33462
Transporting
Before putting the watercraft on a trailer or
transporting it, be sure to put the shift lever in
the forward position. When transporting the
watercraft on a trailer, secure the tie downs to
the trailer through the bow eye and stern
eyes. NOTICE: Do not attach ropes or tie
downs to any part of the watercraft other
than the bow eye and stern eyes to secure
the watercraft to the trailer. Otherwise, the
watercraft may be damaged. Wrap the
ropes or tie downs with towels or rags
where they touch the body of the water-
craft to avoid scratches or damage. Do not
transport the watercraft with the shift lever
in the reverse position. Otherwise, the re-
verse gate may hit an obstacle, which
could cause damage.
[ECJ00642]
UF2C70E0.book Page 68 Monday, November 3, 2008 10:16 AM