Table of contents
Battery ............................................. 61
Cleaning the watercraft ................... 62
Maintenance and adjustments ..... 63
Owner’s/operator’s manual and
tool kit ........................................... 63
Periodic maintenance chart ............. 65
Checking the fuel system ................ 66
Checking the oil injection system .... 66
Checking the jet thrust
nozzle angle ................................. 66
Checking and adjusting the throttle
cable ............................................ 67
Cleaning and adjusting the
spark plugs ................................... 67
Lubrication points ............................ 68
Checking the battery ....................... 69
Fuel injection system ....................... 71
Bleeding the oil pump ...................... 71
Adjusting the Yamaha Adjustable
Sponsons (YAS) .......................... 71
Specifications .................................. 72
Specifications ................................ 72
Trouble recovery ............................. 73
Troubleshooting ........................... 73
Troubleshooting chart ...................... 73
Emergency procedures ................ 76
Cleaning the jet intake and
impeller ........................................ 76
Jumping the battery ......................... 77
Replacing the fuses ......................... 78
Towing the watercraft ...................... 78
Submerged watercraft ..................... 79
UF1G74E0.book Page 2 Monday, July 31, 2006 10:10 AM
Features and functions
27
The bow eye is used to attach a rope to the
watercraft when transporting, mooring, or
towing it in an emergency.
EJU36020Stern rope holes
The stern rope holes are located at the stern
of the watercraft.
The stern rope holes are used to attach a rope
to the watercraft when transporting or moor-
ing it.
EJU31370Yamaha Engine Management System
(YEMS)
This model is equipped with an integrated,
computerized management system that con-
trols and adjusts ignition timing, fuel injection,
engine diagnostics, and the off-throttle steer-
ing (OTS) system.
EJU31420Multifunction information center
This meter contains the following functions for
help and convenience in operating the water-
craft.
CAUTION:
ECJ00060
Do not run the engine over 4000 r/min
when checking the operation of the
meter on land without supplying water,
otherwise the engine could overheat
and the catalytic converter could be se-
riously damaged.
Use the specified resistor-type spark
plugs and caps, otherwise the meter
may function erratically.
NOTE:
When the engine is started, all displays light
up for a few seconds, the buzzer sounds
twice, and then the meter starts to operate
normally.
1Bow eye
1Stern rope hole
1Tachometer
2Speedometer
3Hour meter/voltmeter
4Fuel level meter
5“WARNING” light
6Fuel level warning indicator
7Oil level warning indicator
8Engine overheat warning indicator
9Exhaust temperature warning indicator
10Check engine warning indicator
11Select button
UF1G74E0.book Page 27 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
69
QSTS cable (jet thrust nozzle end)
QSTS cables (pulley end)
QSTS cables (handlebar end)
Remove the QSTS cable housing. Spray a
rust inhibitor into the outer cables. Reinstall
the QSTS cable housing.
Intermediate housing
Fill the intermediate housing with water-re-
sistant grease through the grease nipple
using a grease gun.
EJU34450Checking the battery
Check the level of the battery electrolyte and
make sure that the negative (–) and positive
(+) battery leads are tightened securely.
WARNING
EWJ00790
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.
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)
UF1G74E0.book Page 69 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
Index
2-stroke engine oil .................................... 36
A
Adjusting the Yamaha Adjustable
Sponsons (YAS) ................................... 71
B
Battery ................................................ 40, 61
Battery, checking...................................... 69
Battery, jumping ....................................... 77
Beaching the watercraft ........................... 57
Bilge ......................................................... 39
Boarding alone ......................................... 51
Boarding and starting from a dock ........... 51
Boarding and starting in deep water ........ 51
Boarding and starting in shallow water .... 50
Boarding with a passenger....................... 52
Bow down................................................. 26
Bow eye ................................................... 26
Bow up ..................................................... 26
Builder’s plate............................................. 2
C
Capsized watercraft ................................. 54
Check engine warning indicator ............... 31
Cleaning the watercraft ............................ 62
Cooling water pilot outlets .................. 23, 44
Cruising limitations ................................... 10
D
Docking the watercraft ............................. 57
E
Emergency procedures ............................ 76
Engine break-in ........................................ 45
Engine compartment ................................ 39
Engine overheat warning indicator ........... 29
Engine serial number ................................. 1
Engine shut-off cord ................................. 44
Engine shut-off switch .............................. 22
Engine stop switch ................................... 22
Enjoy your watercraft responsibly ............ 16
Exhaust temperature warning indicator.... 31
F
Filling the fuel tank ................................... 36
Filling the oil tank ..................................... 36
Fire extinguisher....................................... 41
Flushing the cooling system ..................... 60
Front storage compartment ...................... 32Fuel and oil............................................... 35
Fuel and oil systems ................................ 39
Fuel injection system ................................ 71
Fuel level meter ........................................ 28
Fuel level warning indicator ...................... 29
Fuel system .............................................. 61
Fuel system, checking .............................. 66
Fuel tank .................................................. 66
Fuel tank filler cap .................................... 22
Fuses, replacing ....................................... 78
G
Gasohol .................................................... 35
Gasoline ................................................... 35
Getting to know your watercraft ............... 48
Glove compartment .................................. 33
H
Handgrip ................................................... 26
Hazard information ................................... 14
Hood ......................................................... 21
Hour meter/voltmeter ............................... 28
Hull and deck ........................................... 39
Hull Identification Number (HIN)................. 1
I
Identification numbers ................................ 1
Important labels .......................................... 3
J
Jet intake .................................................. 43
Jet intake and impeller, cleaning .............. 76
Jet thrust nozzle angle, checking ............. 66
Jumper cables, connecting ...................... 77
L
Labels, other .............................................. 7
Labels, warning .......................................... 4
Launching the watercraft .......................... 46
Learning to operate your watercraft ......... 48
Leaving the watercraft .............................. 48
Limitations on who may operate the
watercraft ................................................ 9
Lubrication................................................ 61
Lubrication points ..................................... 68
M
Main components, location of .................. 17
Maintenance and adjustments ................. 63
Model information....................................... 2
Multifunction information center ......... 27, 44
UF1G74E0.book Page 1 Monday, July 31, 2006 10:10 AM
Index
O
Oil filter ..................................................... 66
Oil injection system, checking .................. 66
Oil level warning indicator ........................ 29
Oil pump, bleeding ................................... 71
Oil tank ..................................................... 66
Oil tank filler cap....................................... 22
Operating your watercraft......................... 48
Operation ................................................. 45
Operation of controls and other
functions ............................................... 21
Operation requirements ........................... 11
Owner’s/operator’s manual and tool kit .... 63
P
Periodic maintenance chart...................... 65
Post-operation care .................................. 58
Pre-operation check list............................ 38
Pre-operation check points ...................... 39
Pre-operation checks ............................... 38
Primary Identification (PRI-ID) number ...... 1
Q
Quick Shift Trim System (QSTS) ............. 42
Quick Shift Trim System (QSTS)
selector ................................................. 25
R
Recommended equipment ....................... 13
Riding with a passenger ........................... 49
Rough water operation ............................. 57
S
Safe boating rules .................................... 15
Seat .......................................................... 21
Spark plugs, cleaning and adjusting ........ 67
Speedometer............................................ 28
Start switch............................................... 23
Starting the engine ................................... 46
Starting the watercraft .............................. 50
Steering system ................................. 24, 42
Stern drain plugs ...................................... 40
Stern rope holes ....................................... 27
Stopping the engine ................................. 48
Stopping the watercraft ............................ 56
Storage..................................................... 60
Storage compartments ............................. 32
Submerged watercraft .............................. 79
Switches ................................................... 44T
Tachometer .............................................. 28
Throttle cable, checking and adjusting ..... 67
Throttle lever ...................................... 23, 42
Towing the watercraft ............................... 78
Transporting ............................................. 59
Trolling speed, checking .......................... 71
Troubleshooting ....................................... 73
Troubleshooting chart .............................. 73
Turning the watercraft .............................. 55
W
Water separator ....................................... 39
Watercraft characteristics ......................... 14
Y
Yamaha Adjustable Sponsons (YAS) ...... 33
Yamaha Engine Management
System (YEMS) .................................... 27
UF1G74E0.book Page 2 Monday, July 31, 2006 10:10 AM