check engine YAMAHA VX 2015 Owner's Manual

Pre-operation checks
66
Securely install the stern drain plugs by tight-
ening them until they stop.
EJU43810Hood check
Push down the hood latch and make sure
that it is securely closed.
EJU40146Post-launch checks
Perform the post-launch checks in the pre-
operation checklist while the watercraft is in
the water and the engine is running.
To perform the post-launch checks:
(1) Launch the watercraft. (See page 70 for
information on launching the watercraft.)
(2) Perform the checks and make sure that
there are no malfunctioning items or oth-
er problems.
EJU40553Cooling water pilot outlet check
Make sure that water is discharged from the
cooling water pilot outlet while the engine is
running. (See page 30 for information on the
cooling water pilot outlet.)
EJU32715Multifunction information center check
Make sure that the multifunction information
center operates properly. (See page 39 for in-
formation on proper operation of the multi-
function information center.)
1Stern drain plug
2O-ring
2
1
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Pre-operation checks
67
EJU43391Shift system check
Operate the throttle lever and RiDE lever, and
check that the watercraft moves or does not
move according to the displayed shift indica-
tor. (See page 32 for shift system operation
procedures.) WARNING! To avoid colli-
sions, operate at safe speeds and keep asafe distance away from people, objects,
and other watercraft. [EWJ01860]
EJU40172
Engine idling speed check
Start the engine and warm it up. Use the ta-
chometer in the multifunction information
center to make sure that the engine idling
speed is not significantly above or below the
specified range.
1“F” (Forward position)
1“N” (Neutral position)
1“R” (Reverse position)
1
1
1
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Pre-operation checks
68
Engine idling speed:
1650 ±50 r/min
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Operation
70
EJU40212Riding position
Operator riding position
The operator should grip the handlebars firm-
ly with both hands and sit astride the seat
with both feet on the floor of the footwell.
Passenger riding position
The passenger(s) should hold on firmly, either
to the person in front of them or to the hand-
grip provided, and sit astride the seat with
their feet on the floor of the footwell. Never al-
low a passenger to ride in front of the opera-
tor. (See page 18 for information on the riding
position when pulling a wakeboarder or wa-
ter-skier.)
EJU32803Launching the watercraft
When launching the watercraft, make sure
that there are no obstacles around you.
If the watercraft is launched from a trailer,
someone should make sure that waves do
not push the watercraft into the trailer.
EJU36346Starting the engine on water
WARNING
EWJ01531
Do not apply throttle when anyone is at the
rear of the watercraft. Turn the engine off
or keep it at idle. Water and debris exiting
the jet thrust nozzle can cause severe in-
jury.
To start the engine:
(1) VX Deluxe / VX Cruiser: If the lock mode
is selected for the Yamaha Security Sys-
tem setting, select the unlock mode.
(See page 27 for Yamaha Security Sys-
tem setting procedures.)
(2) Move the watercraft to an area that is
free from weeds and debris, and has a
water depth of at least 60 cm (2 ft) from
the bottom of the watercraft. NOTICE:
Never run the engine in water that is
less than 60 cm (2 ft) deep from the
bottom of the watercraft, otherwise
pebbles or sand could be sucked into
the jet intake, causing impeller dam-
age and engine overheating.
[ECJ00473]
(3) Attach the engine shut-off cord (lanyard)
to your left wrist, and then attach the clip
to the engine shut-off switch. (See page
28 for information on operating the en-
gine shut-off switch.) WARNING! Check
that the engine shut-off cord (lanyard)
UF2X70E0.book Page 70 Monday, December 7, 2015 4:02 PM

Operation
74
proximately 100 m (330 ft) after the throttle le-
ver is released or the engine is stopped,
although this distance will vary depending on
many factors, including gross weight, water
surface conditions, and wind direction.
If the RiDE lever is squeezed to slow down,
the stopping distance is approximately 30%
shorter than when the RiDE lever is not used.
However, this distance will vary depending
on many factors, including gross weight, wa-
ter surface conditions, and wind direction.
WARNING
EWJ01791
Allow adequate stopping distance.
Take early action to avoid collisions. Re-
member, watercraft and other boats do
not have brakes.
Operate defensively at safe speeds and
keep a safe distance away from people,
objects, and other watercraft to give you
time to stop.
Do not shut the engine off when slowing
down in case you need engine power to
steer away from a boat or other obstacle
that comes into your path.
To avoid rear-end collisions while oper-
ating the watercraft, check behind you
before using the RiDE lever to slow
down or stop the watercraft.
EJU43441Operating the watercraft in reverse or
neutral
Operating in reverse
When the RiDE lever is squeezed, the “R” (re-
verse) shift indicator will be displayed in the
multifunction display and the watercraft will
move in reverse. (See page 32 for shift sys-
tem operation procedures.)
Make sure that there are no obstacles or peo-
ple behind you before shifting into reverse.
TIP:
This model is equipped with a function which
limits the engine speed in reverse.
Operating in neutral
When the RiDE lever is squeezed lightly and
released, the “N” (neutral) shift indicator will
be displayed in the multifunction display and
the watercraft will stop in its current location.
1“R” (Reverse position)
1
UF2X70E0.book Page 74 Monday, December 7, 2015 4:02 PM

Care and storage
82
ter flows out continually from the jet
thrust nozzle.
(7) Run the engine at idling speed for about
3 minutes watching the engine condition.
If the engine stops while flushing, turn
the water supply off immediately and
perform the procedure again from step 6.
NOTICE: Do not supply water to the
cooling water passages when the en-
gine is not running. The water could
flow back through the muffler into the
engine, causing severe engine dam-
age.
[ECJ00123]
(8) Turn the water supply off.
(9) Discharge the remaining water out of the
cooling water passages by alternately
squeezing and releasing the throttle lever
quickly for 10 to 15 seconds.
(10) Stop the engine.
(11) Remove the garden hose adapter, and
then securely install the flushing hose
connector cap by tightening it until it
stops.
(12) Securely install the watertight storage
compartment and seats in their original
positions.
EJU43840Cleaning the watercraft
(1) Remove the seats. (See page 44 for seat
removal and installation procedures.)
(2) If the watercraft will be stored for a week
or more, rustproof the internal enginecomponents to help prevent corrosion.
(See page 85 for information on rust-
proofing the internal engine compo-
nents.)
(3) 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.
[ECJ00572]
(4) Drain the water from the engine com-
partment. (See page 55 for information
on draining the bilge water.)
(5) Wipe the engine and engine compart-
ment with a dry cloth.
(6) Wash down the hull, deck, and jet pump
with fresh water.
(7) Wipe the hull, deck, and jet pump with a
dry cloth.
(8) Wipe all vinyl and rubber components,
such as the seats and engine compart-
ment seals, with a vinyl protectant.
(9) To minimize corrosion, spray metallic
parts of the hull, deck, and engine with a
rust inhibitor.
(10) Allow the engine compartment to air dry
completely before installing the seats.
(11) Securely install the seats in their original
positions.
EJU33687Battery care
If the watercraft will not be used for more than
a month, remove the battery from the water-
craft, check it, and then store it in a cool, dry
place.
WARNING
EWJ00792
Battery electrolyte is poisonous and dan-
gerous, causing severe burns, etc. Elec-
trolyte contains sulfuric acid. Avoid
contact with skin, eyes, or clothing.
Antidotes
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Maintenance
87
EJU33769
Maintenance
Periodic checks and lubrication will keep
your watercraft in the safest and most effi-
cient condition possible. Therefore, make
sure to carry out the periodic maintenance.
Safety is an obligation of the watercraft own-
er. Proper maintenance must be carried out
to keep the exhaust emission and sound lev-
els within the regulated limits. The most im-
portant points of watercraft inspection and
lubrication are explained on the following
pages.
See a Yamaha dealer for genuine Yamaha re-
placement parts and optional accessories
designed for your watercraft.
Remember, failures that are the result of the
installation of parts or accessories which are
not qualitatively equivalent to genuine
Yamaha parts are not covered by the limited
warranty.
Maintenance, replacement, or repair of
the emission control devices and system
may be performed by any marine SI engine
repair establishment or individual. War-
ranty repair, however, must be performed
at an authorized Yamaha marine dealer-
ship.
WARNING
EWJ00312
Be sure to turn off the engine when you
perform maintenance unless otherwise
specified. If you are not familiar with ma-
chine servicing, this work should be done
by a Yamaha dealer or other qualified me-
chanic.
EJU33803Tool kit
A tool kit is included with this watercraft.
Place the tool kit in a waterproof bag and al-ways carry it with you whenever you use the
watercraft.
1Tool bag
2Screwdriver
3Garden hose adapter
410/12 mm box wrench
5Pliers
610/12 mm open-end wrench
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Maintenance
88
EJU43101Periodic maintenance chart
The periodic maintenance chart gives general guidelines for periodic maintenance. Have a
Yamaha dealer perform the checks in the following chart. However, maintenance may need
to be performed more frequently depending on your operating conditions. If you have any
questions, consult a Yamaha dealer.
This “√” mark indicates items to be checked and serviced by a Yamaha dealer.
Item OperationInitial Thereafter every
Page
10 hours50 hours
or 12
months
*1100
hours or
12
months
*1200
hours or
24
months
*1
Fuel lineCheck fuel hoses and
clamps√—
Fuel filler cap/Wa-
ter separatorCheck O-rings for cracks
and deformation√—
Fuel tankCheck installation and
straps√—
Water inlet strainerCheck for clogs and dam-
age√—
Cooling water hos-
esCheck for damage and
leakage, and check
clamps√—
Engine oilReplace√√90
Oil filterReplace√90
Intermediate hous-
ingLubricate√—
Spark plugsCheck√√—
BatteryCheck specific gravity of
electrolyte, terminals,
bands, and breather hose√—
Battery leadsCheck terminals√—
Steering masterCheck operation and for
looseness√√—
Steering cableCheck exterior and con-
nections, and lubricate√—
Shift rod and re-
verse gateCheck exterior and con-
nections, and lubricate√—
Air filter elementCheck for damage and
dirt√—
Air intake hosesCheck for damage, and
check clamps√—
Throttle bodyLubricate throttle valves√—
UF2X70E0.book Page 88 Monday, December 7, 2015 4:02 PM

Maintenance
89
*1: Whichever comes first.
*2: Check every 200 hours.
Perform the pre-operation checks and post-operation checks before performing periodic
maintenance.
Exhaust systemCheck for exhaust leak-
age, and check hoses and
clamps√—
Breather hoseCheck breather hose and
clamps√—
ImpellerCheck for bends, dam-
age, and foreign material√—
Jet thrust nozzleCheck movement, and lu-
bricate√—
Jet vacuum bilgeCheck hoses for clogs
and damage, check
clamps, and clean bilge
strainer√—
Stern drain plugsCheck O-rings√—
AnodeCheck for corrosion, and
clean√ *2 —
Valve clearanceCheck and adjust√ *2 —
Rubber couplingCheck for cracks, inden-
tations, looseness, and
noise√—
Engine mountCheck for damage and
peeling√— Item OperationInitial Thereafter every
Page
10 hours50 hours
or 12
months
*1100
hours or
12
months
*1200
hours or
24
months
*1
UF2X70E0.book Page 89 Monday, December 7, 2015 4:02 PM

Trouble recovery
92
EJU34562
Troubleshooting
If you have any trouble with your watercraft, use the troubleshooting chart to check for the
possible cause.
If you cannot find the cause, consult a Yamaha dealer.
EJU43512Troubleshooting chart
Confirm the possible cause and remedy, and then refer to the applicable page.
TROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine does not
start (Starter motor
does not turn over)Ya m a h a S e -
curity System
(VX Deluxe /
VX Cruiser)Lock mode selected Select unlock mode
27
Engine shut-
off switchClip not in place Install clip
28
Fuse Burned out Replace fuse and
check wiring97
Battery Run down Recharge 82
Poor terminal con-
nectionsTighten as required
82
Terminal corroded Clean or replace 82
Starter motor Faulty Have serviced by
Yamaha dealer—
Engine does not
start (Starter motor
turns over)Throttle lever Squeezed Release 28
Faulty Have serviced by
Yamaha dealer—
RiDE lever Squeezed Release 28
Faulty Have serviced by
Yamaha dealer—
Fuel Fuel tank empty Refill as soon as pos-
sible51
Stale or contaminat-
edHave serviced by
Yamaha dealer—
Fuel tank Water or dirt present Have serviced by
Yamaha dealer—
Spark plug Fouled or defective Have serviced by
Yamaha dealer—
Spark plug
capNot connected or
looseHave serviced by
Yamaha dealer—
Connected to wrong
cylinderHave serviced by
Yamaha dealer—
Fuel injec-
tion systemFuel pump faulty Have serviced by
Yamaha dealer—
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