Table of contents
Operating in weeded areas ............. 72
Post-operation care ...................... 72
Transporting ................................. 73
Maintenance and care ..................... 74
Storage ......................................... 74
Flushing the cooling system ............ 74
Lubrication ....................................... 75
Battery ............................................. 75
Cleaning the watercraft ................... 75
Maintenance and adjustments ..... 76
Owner’s/operator’s manual and
tool kit ........................................... 76
Periodic maintenance chart ............. 77
Checking the fuel system ................ 79
Engine oil and oil filter ..................... 79
Air filter element .............................. 79
Checking the jet thrust nozzle
angle ............................................ 79
Checking the shift cable .................. 80
Checking and adjusting the throttle
cable ............................................ 80
Cleaning and adjusting the spark
plugs ............................................ 82
Lubrication points ............................ 84
Checking the battery ....................... 86
Fuel injection system ....................... 87
Specifications .................................. 88
Specifications ................................ 88
Trouble recovery ............................. 89
Troubleshooting ........................... 89
Troubleshooting chart ...................... 89
Emergency procedures ................ 92
Cleaning the jet intake and
impeller ........................................ 92
Jumping the battery ......................... 93
Replacing the fuses ......................... 93
Towing the watercraft ...................... 95
Submerged watercraft ..................... 95
UF2H70E0.book Page 2 Thursday, January 15, 2009 10:49 AM
Features and functions
24
Engine compartment
6 5
7
10 9
8
2143
1Engine cover
2Air filter case
3Water separator
4Fuel tank
5Battery
6Flushing hose connector
7Spark plug cap
8Electrical box
9Engine oil filler cap
10Dipstick
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Maintenance and care
78
*1 This operation should be performed after every use.
*2 This operation should be performed before long-term storage.
BatteryCheck, charge 86
Rubber couplingCheck—
Engine mountCheck—
Nuts and boltsCheck—
Air filter elementCheck 79
Engine oilReplace
50 hours or 12 months79
Oil filterReplace 79
Valve clearanceCheck, adjust— Item OperationInitial Thereafter every
Page 10
hours50
hours100
hours100
hours200
hours
6
months12
months12
months24
months
UF2H70E0.book Page 78 Thursday, January 15, 2009 10:49 AM
Maintenance and care
79
EJU34212Checking the fuel system
WARNING
EWJ00381
Leaking fuel can result in fire or explosion.
Check for fuel leakage regularly.
If any fuel leakage is found, the fuel sys-
tem must be repaired by a qualified me-
chanic. Improper repairs can make the
watercraft unsafe to operate.
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 leakageEJU34230Fuel 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.
EJU36951Engine oil and oil filter
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
ECJ00991
Do not run the engine with too much or not
enough oil in the engine, otherwise the en-
gine could be damaged.
It is recommended to have a Yamaha dealer
change the engine oil. However, if you choose
to change the oil on your own, consult a
Yamaha dealer.
EJU34311Air filter element
Have a Yamaha dealer check the air filter ele-
ment at the intervals specified in the periodic
maintenance chart.
EJU34321Checking 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
1
Recommended engine oil:
SAE 10W-30, 10W-40, 20W-40, 20W-
50
Oil grade:
API SE,SF,SG,SH,SJ,SL
Oil quantity:
With oil filter replacement:
3.1 L (3.28 US qt, 2.73 Imp.qt)
Without oil filter replacement:
3.0 L (3.17 US qt, 2.64 Imp.qt)
Total amount:
4.3 L (4.55 US qt, 3.78 Imp.qt)
UF2H70E0.book Page 79 Thursday, January 15, 2009 10:49 AM
Trouble recovery
91
Watercraft slow or
loses powerShift lever Not completely shift-
ed into forward posi-
tionPush lever forward
until it stops 31
Yamaha Se-
curity SystemLow-RPM mode se-
lectedSelect normal mode
36
Cavitation Jet intake clogged Clean 92
Impeller damaged or
wornHave serviced by
Yamaha dealer92
Engine over-
heat warningEngine speed reduc-
tion control activatedClean jet intake and
cool engine44
Oil pressure
warningEngine speed reduc-
tion control activatedAdd oil
44
Spark plug Fouled or defective Replace 82
Incorrect heat range Replace 82
Gap incorrect Adjust 82
Spark plug
capLoose Connect properly
82
Electrical wir-
ingLoose connection Have serviced by
Yamaha dealer—
Fuel Stale or contaminat-
edHave serviced by
Yamaha dealer79
Air filter Clogged Have serviced by
Yamaha dealer79
Oil buildup Have serviced by
Yamaha dealer79 TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF2H70E0.book Page 91 Thursday, January 15, 2009 10:49 AM
Index
A
Air filter element ....................................... 79
Analog speedometer/tachometer ............. 40
Analog speedometer/tachometer and
indicator lights ....................................... 40
B
Battery ................................................ 54, 75
Battery, checking...................................... 86
Battery, jumping ....................................... 93
Beaching the watercraft ........................... 71
Beverage holder ....................................... 47
Bilge ......................................................... 54
Boarding alone ......................................... 66
Boarding and starting from a dock ........... 65
Boarding and starting in deep water ........ 65
Boarding and starting in shallow water .... 65
Boarding with passengers ........................ 66
Bow down................................................. 32
Bow eye ................................................... 33
Bow up ..................................................... 32
Builder’s plate............................................. 2
C
Capsized watercraft ................................. 68
Check engine warning indicator ............... 45
Cleaning the watercraft ............................ 75
Cooling water pilot outlet .................... 29, 59
Craft Identification Number (CIN) ............... 1
Cruise assist............................................. 37
Cruising limitations ................................... 11
D
Digital speedometer ................................. 42
Docking the watercraft ............................. 71
E
Emergency procedures ............................ 92
Engine break-in ........................................ 60
Engine compartment ................................ 52
Engine oil ................................................. 49
Engine oil and oil filter .............................. 79
Engine oil level ......................................... 52
Engine overheat warning indicator ........... 44
Engine serial number ................................. 1
Engine shut-off cord (lanyard) .................. 58
Engine shut-off switch .............................. 27
Engine stop switch ................................... 27
Enjoy your watercraft responsibly ............ 19F
Fire extinguisher ....................................... 55
Flushing the cooling system ..................... 74
Front storage compartment ...................... 45
Fuel .......................................................... 48
Fuel and oil............................................... 48
Fuel injection system ................................ 87
Fuel level .................................................. 52
Fuel level meter ........................................ 43
Fuel level warning indicator ...................... 44
Fuel system, checking .............................. 79
Fuel tank .................................................. 79
Fuel tank filler cap .................................... 26
Fuses, replacing ....................................... 93
G
Getting to know your watercraft ............... 63
Glove compartment .................................. 46
H
Handgrip ................................................... 33
Hazard information ................................... 15
Hood ......................................................... 26
Hour meter/voltmeter ............................... 43
Hull and deck ........................................... 52
I
Identification numbers ................................ 1
J
Jet intake .................................................. 58
Jet intake and impeller, cleaning .............. 92
Jet thrust nozzle angle, checking ............. 79
Jumper cables, connecting ...................... 93
L
Labels, important ........................................ 3
Labels, other .............................................. 8
Labels, warning .......................................... 4
Launching the watercraft .......................... 60
Learning to operate your watercraft ......... 63
Leaving the watercraft .............................. 62
Left multifunction display and operation
buttons .................................................. 42
Limitations on who may operate the
watercraft .............................................. 10
“L-MODE” indicator light ........................... 42
Lubrication................................................ 75
Lubrication points ..................................... 84
UF2H70E0.book Page 1 Thursday, January 15, 2009 10:49 AM