fuel cap YAMAHA VX 2008 User Guide

Maintenance and care
65

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 reaches approxi-
mately 50 mm (2 in) from the top of the
fuel tank. Fuel expands as it warms up
and could overflow if the fuel tank has
been overfilled. If temporarily leaving
the watercraft with a full fuel tank, do not
leave it in direct sunlight. Leave it in a
well-ventilated area with the watercraft
in a horizontal position.

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 fuel stabilizer and conditioner to the fuel
tank according to the manufacturer’s instruc-
tions.
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.
(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.
CAUTION:
ECJ00100
Always keep the battery charged. Storing
a discharged battery can cause permanent
battery damage.
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.
EJU33730Cleaning the watercraft
Clean the watercraft before storing it for a long
period.
(1) Wash down the hull, handlebars, and jet
unit with fresh water. Specific gravity (for reference):
1.28 at 20 °C (68 °F)
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Maintenance and care
70
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.
EJU34291Engine 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.
CAUTION:
ECJ00180

Do not run the engine with too much or
not enough oil in the oil tank. Oil could
spray out and the engine could be dam-
aged.

Be sure to change the engine oil after
the first 10 hours of operation, and every
100 hours thereafter or at the start of a
new season, otherwise the engine will
wear quickly.
The oil filter should be replaced every
year or every 100 hours of operation.
Have a Yamaha dealer replace the oil fil-
ter if necessary.
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.
NOTE:
Dispose of used oil according to local regula-
tions.
1Fuel tank
Recommended engine oil:
SAE 10W-30, 20W-40, 20W-50
Oil grade:
API SE,SF,SG,SH,SJ,SL
Oil quantity:
With oil filter replacement:
2.2 L (2.33 US qt) (1.94 Imp.qt)
Without oil filter replacement:
2.0 L (2.11 US qt) (1.76 Imp.qt)
Total amount:
4.3 L (4.55 US qt) (3.78 Imp.qt)
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Specifications
77
EJU34542
Specifications
Watercraft capacity:
Maximum people on board:
3 person
Maximum load capacity:
240 kg (530 lb)
Dimensions:
Length:
3220 mm (126.8 in)
Width:
1170 mm (46.1 in)
Height:
1150 mm (45.3 in)
Dry weight:
VX 319 kg (703 lb)
VX Deluxe 322 kg (710 lb)
VX Cruiser 323 kg (712 lb)
Performance:
Maximum output (according to ISO 8665/SAE
J1228):
75.00 kW@8000 r/min
Maximum fuel consumption:
28.0 L/h (7.4 US gal/h) (6.2 Imp.gal/h)
Cruising range at full throttle:
2.14 hour
Trolling speed:
1650 ±50 r/min
Engine:
Engine type:
Liquid cooled 4-stroke, DOHC
Number of cylinders:
4
Engine displacement:
1052 cm³
Bore & stroke:
76.0 × 58.0 mm (2.99 × 2.28 in)
Compression ratio:
11.4 : 1
Valve clearance-intake (cold):
0.11–0.20 mm (0.0043–0.0079 in)
Valve clearance-exhaust (cold):
0.25–0.34 mm (0.0098–0.0134 in)
Lubrication system:
Dry sump
Cooling system:
Water
Starting system:
ElectricIgnition system:
T.C.I.
Spark plug:
CR9EB
Spark plug gap:
0.7–0.8 mm (0.028–0.031 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 °
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, 20W-40, 20W-50
Recommended engine oil grade API:
API SE,SF,SG,SH,SJ,SL
Fuel tank total capacity:
60 L (15.9 US gal) (13.2 Imp.gal)
Engine oil quantity with oil filter replacement:
2.2 L (2.33 US qt) (1.94 Imp.qt)
Engine oil quantity without oil filter replacement:
2.0 L (2.11 US qt) (1.76 Imp.qt)
Engine oil total quantity:
4.3 L (4.55 US qt) (3.78 Imp.qt)
UF1K73E0.book Page 77 Wednesday, July 11, 2007 9:15 AM

Trouble recovery
78
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.
EJU34592Troubleshooting chart
TROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine does not
start (Starter motor
does not turn over)Yamaha Se-
curity Sys-
tem (VX
Deluxe/VX
Cruiser)Lock mode selected Select unlock mode
29
Engine shut-
off switchClip not in place Install clip
25
Fuse Burned out Replace the fuse and
check wiring82
Battery Run down Recharge 74
Poor terminal con-
nectionsTighten as required
74
Terminal corroded Clean 65
Starter motor Faulty Have serviced by
Yamaha dealer—
Engine does not
start (Starter motor
turns over)Throttle lever Squeezed Release 26
Fuel Empty Refill as soon as pos-
sible39
Stale or contaminat-
edHave serviced by
Yamaha dealer70
Fuel tank Water or dirt present Have serviced by
Yamaha dealer70
Spark plug Fouled or defective Clean or replace 72
Spark plug
capNot connected or
looseConnect properly
72
Connected to wrong
cylinderConnect properly
72
Fuel injec-
tion systemFuel pump faulty Have serviced by
Yamaha dealer—
UF1K73E0.book Page 78 Wednesday, July 11, 2007 9:15 AM

Trouble recovery
79
Engine runs irregu-
larly or stallsFuel Empty Refill as soon as pos-
sible39
Stale or contaminat-
edHave serviced by
Yamaha dealer70
Fuel tank Water or dirt present Have serviced by
Yamaha dealer70
Spark plug Fouled or defective Replace 72
Incorrect heat range Replace 72
Gap incorrect Adjust 72
Spark plug
capLoose Connect properly 72
Cracked, torn, or
damagedHave serviced by
Yamaha dealer—
Electrical wir-
ingLoose connection Have serviced by
Yamaha dealer—
Fuel injec-
tion systemFaulty or clogged in-
jectorsHave serviced by
Yamaha dealer—
Warning light or in-
dicator blinksFuel level Empty Refill as soon as pos-
sible39
Engine over-
heatedJet intake clogged Clean
80
Check engine
warningFaulty sensors Have serviced by
Yamaha dealer34
Watercraft slow or
loses powerYamaha Se-
curity Sys-
tem (VX
Deluxe/VX
Cruiser)Low-RPM mode se-
lectedSelect normal mode
30
Cavitation Jet intake clogged Clean 80
Impeller damaged or
wornHave serviced by
Yamaha dealer80
Engine over-
heat warningEngine speed reduc-
tion control activatedClean jet intake and
cool engine33
Oil pressure
warningEngine speed reduc-
tion control activatedAdd oil
32
Spark plug Fouled or defective Replace 72
Incorrect heat range Replace 72
Gap incorrect Adjust 72
Spark plug
capsLoose Connect properly
72
Electrical wir-
ingLoose connection Have serviced by
Yamaha dealer—
Fuel Stale or contaminat-
edHave serviced by
Yamaha dealer70
Air filter Clogged or oil buildup Have serviced by
Yamaha dealer71 TROUBLE POSSIBLE CAUSE REMEDY PAGE
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Trouble recovery
83
WARNING
EWJ00800
Do not use fuses of higher amperage than
recommended. Substitution with a fuse
that has an improper rating can cause ex-
tensive electrical system damage and pos-
sible fire.
EJU34710Towing the watercraft
If the watercraft becomes inoperative in the
water, it can be towed to shore.
If the watercraft must be towed in an emer-
gency using a towline, the operator should
ride the watercraft, holding onto the handle-
bars.
CAUTION:
ECJ00720

Tow the watercraft at 5 mph (8 km/h) or
less, otherwise water could enter the en-
gine through the exhaust passages or
through the air intake and flood the en-
gine compartment if it is towed too fast.

Tow the watercraft using the bow eye
only.

The bow must be kept up out of the wa-
ter during towing to prevent water from
entering the engine compartment.
WARNING
EWJ00810

The watercraft should only be towed in
an emergency.

The towline should be long enough so
that the watercraft will not collide with
the towing boat when slowing down. A
good rule of thumb is a towline that is
three times the combined length of the
towing boat and the watercraft.

The operator of the towing boat must
keep speed to a minimum and avoid traf-
fic or obstacles which could be a hazard
to the rider on the watercraft.
EJU36150Submerged watercraft
If the watercraft is submerged or flooded with
water, follow the procedure below and consult
a Yamaha dealer as soon as possible. Failure
to do so could result in serious engine dam-
age!
In an emergency:
(1) Beach the watercraft and remove the
stern drain plugs to drain the water from
the engine compartment. (See page 43
for more information.) Remove the stor-
age compartment drain plugs to drain the
water from the storage compartments.
(2) Install the stern drain plugs and storage
compartment drain plugs.
(3) Disconnect the spark plug caps, and then
remove the spark plugs.
CAUTION:
ECJ00760
Do not connect the spark plugs to the
spark plug caps.
(4) Disconnect the fuel injector couplers.
CAUTION:
ECJ00770
Cover the disconnected fuel injector cou-
plers so that they do not get wet. If the cou-
1Bow eye
UF1K73E0.book Page 83 Wednesday, July 11, 2007 9:15 AM

Trouble recovery
84
plers get wet, they could corrode, which
could lead to poor connections.
(5) Crank the engine for 5 seconds at wide
open throttle. Repeat this step until all of
the water in the cylinders has been ex-
pelled.
(6) Spray a rust inhibitor into each spark plug
hole for 5 seconds.
(7) Crank the engine for 5 seconds at wide
open throttle. Repeat this step several
times.
(8) Install the spark plugs, and then connect
the spark plug caps and fuel injector cou-
plers.
CAUTION:
ECJ00780
Do not start the engine even after complet-
ing the previous steps. Any water remain-
ing in the engine could cause serious
engine damage.
(9) Have the watercraft inspected by a
Yamaha dealer as soon as possible.
CAUTION:
ECJ00790
Be sure to have a Yamaha dealer inspect
the watercraft. Otherwise, serious engine
damage could result.
UF1K73E0.book Page 84 Wednesday, July 11, 2007 9:15 AM

Index
A
Air filter element ....................................... 71
B
Battery ................................................ 44, 65
Battery, checking...................................... 74
Battery, jumping ....................................... 81
Beaching the watercraft ........................... 60
Bilge ......................................................... 43
Boarding alone ......................................... 55
Boarding and starting from a dock ........... 54
Boarding and starting in deep water ........ 54
Boarding and starting in shallow water .... 54
Boarding with passengers ........................ 55
Bow eye ................................................... 28
Builder’s plate............................................. 2
C
Capsized watercraft ................................. 57
Check engine warning indicator ............... 34
Cleaning the watercraft ............................ 65
Cooling water pilot outlet .................... 26, 48
Craft Identification Number (CIN) ............... 1
Cruising limitations ................................... 10
D
Docking the watercraft ............................. 60
E
Emergency procedures ............................ 80
Engine break-in ........................................ 49
Engine compartment ................................ 42
Engine oil ................................................. 39
Engine oil and oil filter .............................. 70
Engine oil level ......................................... 42
Engine overheat warning indicator ........... 33
Engine serial number ................................. 1
Engine shut-off cord ................................. 47
Engine shut-off switch .............................. 25
Engine stop switch ................................... 25
Enjoy your watercraft responsibly ............ 18
F
Fire extinguisher....................................... 45
Flushing the cooling system ..................... 63
Front storage compartment ...................... 35
Fuel and oil............................................... 38
Fuel injection system................................ 75
Fuel level .................................................. 42
Fuel level meter........................................ 31Fuel level warning indicator ...................... 32
Fuel system .............................................. 64
Fuel system, checking .............................. 70
Fuel tank .................................................. 70
Fuel tank filler cap .................................... 24
Fuel tank, filling ........................................ 39
Fuses, replacing ....................................... 82
G
Gasohol .................................................... 38
Gasoline ................................................... 38
Getting to know your watercraft ............... 52
Glove compartment .................................. 36
H
Handgrip ................................................... 28
Hazard information ................................... 14
Hood ......................................................... 23
Hour meter/voltmeter ............................... 32
Hull and deck ........................................... 42
I
Identification numbers ................................ 1
Important labels .......................................... 3
J
Jet intake .................................................. 47
Jet intake and impeller, cleaning .............. 80
Jet thrust nozzle angle, checking ............. 71
Jumper cables, connecting ...................... 81
L
Labels, other .............................................. 7
Labels, warning .......................................... 4
Launching the watercraft .......................... 49
Learning to operate your watercraft ......... 52
Leaving the watercraft .............................. 51
Limitations on who may operate the
watercraft ................................................ 9
“L-MODE” indicator light (for VX Deluxe/
VX Cruiser) ........................................... 35
Lubrication................................................ 64
Lubrication points ..................................... 73
M
Main components, location of .................. 19
Maintenance and adjustments ................. 66
Model information....................................... 2
Multifunction information center ......... 30, 48
O
Oil pressure warning indicator .................. 32
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