ECU YAMAHA VX 2016 User Guide

Equipment operation
48
To close the glove compartment:
Push the lid down to securely lock it in place.
EJU37235Removable watertight storage compart-
ment
The removable watertight storage compart-
ment is located under the rear seat.
The compartment is watertight when the cap
is closed securely.
To open the removable watertight storage
compartment:
(1) Remove the rear seat. (See page 43 for
seat removal and installation proce-
dures.)(2) Loosen the cap and remove it.
To close the removable watertight storage
compartment:
(1) Securely install the cap by tightening it
until it stops.
(2) Securely install the rear seat in its original
position.
EJU43790Fire extinguisher holder and cover
The fire extinguisher holder and cover are lo-
cated in the bow storage compartment.
1Cap
1Removable watertight storage compart-
ment
Removable watertight storage compart-
ment:
Capacity:
5.8 L (1.5 US gal, 1.3 Imp.gal)
Load limit:
3.0 kg (7 lb)
1
1
UF4G70E0.book Page 48 Monday, September 28, 2015 3:14 PM

Equipment operation
49
To use the fire extinguisher holder and cover:
(1) Pull the hood latch up, and then lift up
the rear of the hood.
(2) Unhook the band and remove the fire ex-
tinguisher from the fire extinguisher cov-
er.
(3) Place the fire extinguisher in the fire ex-
tinguisher cover, and then securely fas-
ten the fire extinguisher with the band.
(4) Return the hood to its original position,
and then push the hood latch down to
securely lock it in place. Make sure thatthe hood is securely closed before using
the watercraft.
1Hood latch
1Band
2Fire extinguisher holder and cover
1
1
2
UF4G70E0.book Page 49 Monday, September 28, 2015 3:14 PM

Operation and handling requirements
51
(5) Loosen the fuel filler cap and remove it.
(6) Slowly add fuel to the fuel tank.
(7) Stop filling when the fuel level reaches
approximately 50 mm (2 in) from the top
of the fuel tank. Do not overfill the fuel
tank. Because fuel expands when it
heats up, heat from the engine or the sun
can cause fuel to spill out of the fuel tank.Do not leave the watercraft with a full
tank in direct sunlight.
(8) Wipe up any spilled fuel immediately with
a dry cloth.
(9) Securely install the fuel filler cap by tight-
ening it until it clicks.
(10) Return the hood to its original position,
and then push the hood latch down to
securely lock it in place. Make sure that
the fuel filler cap and the hood are se-
1Fuel filler cap
Fuel tank capacity:
70 L (18.5 US gal, 15.4 Imp.gal)
1
1Top of the fuel tank
2Approximately 50 mm (2 in) from top of the
fuel tank
1Top of the fuel tank
2Approximately 50 mm (2 in) from top of the
fuel tank
1
2
21
UF4G70E0.book Page 51 Monday, September 28, 2015 3:14 PM

Operation and handling requirements
52
curely closed before using the water-
craft.
(11) Securely install the seats in their original
positions.EJU40291
Engine oil requirementsEJU43950Engine oil
NOTICE
ECJ00282
Use only 4-stroke engine oil. Usage of 2-
stroke engine oil could result in severe en-
gine damage.
Checking the engine oil level
WARNING
EWJ00341
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
ECJ00392
Do not run the engine with too much or
not enough oil in the oil tank, otherwise
the engine could be damaged.
Make sure that debris and water do not
enter the oil tank filler hole. Debris and
water in the engine oil can cause serious
engine damage.
TIP:
When checking the engine oil level on land,
the engine must be running while water is
being supplied to the cooling water pas-
sages. (See “Flushing the cooling water
passages” on page 80 for information on
supplying water.)
When checking the engine oil level on wa-
ter, moor the watercraft so that it will not
drift away.
Recommended engine oil type:
SAE 10W-30, 10W-40, 20W-40,
20W-50
Recommended engine oil grade:
API SE,SF,SG,SH,SJ,SL
UF4G70E0.book Page 52 Monday, September 28, 2015 3:14 PM

Operation and handling requirements
53
To check the engine oil level:
(1) With the engine stopped, place the wa-
tercraft in a precisely level position on
land or launch the watercraft.
(2) Look in all directions, and then start the
engine. (See page 69 for information on
starting the engine.)
(3) Run the engine at idling speed for 6 min-
utes or more. Run the engine an addi-
tional 5 minutes if the ambient
temperature is 20 °C (68 °F) or less.
(4) Stop the engine.
(5) Remove the seats. (See page 43 for seat
removal and installation procedures.)
(6) Loosen the oil tank filler cap and remove
it, and then wipe the attached dipstick
clean.
(7) Screw the oil tank filler cap into the filler
hole until it stops. Remove the oil tank
filler cap again and make sure that theengine oil level is between the minimum
and maximum level marks.
(8) If the engine oil level is significantly
above the maximum level mark, consult
a Yamaha dealer. If the engine oil level is
below the minimum level mark, slowly
add engine oil.
(9) Repeat steps 6–8 until the engine oil is at
the proper level.
(10) Securely install the oil tank filler cap and
turn it until it stops.
(11) Securely install the seats in their original
positions.
1Oil tank filler cap/Dipstick
1
1Dipstick
2Maximum level mark
3Minimum level mark
FL
213
UF4G70E0.book Page 53 Monday, September 28, 2015 3:14 PM

Operation and handling requirements
54
EJU40022
Draining the bilge water
NOTICE
ECJ01302
Do not run the engine at full throttle when
bilge water remains in the engine com-
partment. The bilge water can splash into
the engine, which can result in severe
damage.
EJU40036Draining the bilge water on land
To drain the bilge water on land:
(1) Loosen the stern drain plugs and remove
them.
(2) Raise the bow of the watercraft, such as
by placing the watercraft on a slope, to
drain the bilge water from the engine
compartment.
(3) After the bilge water has drained from the
stern drain plug holes, wipe up any re-
maining moisture in the engine compart-
ment with a dry cloth.
(4) Securely install the stern drain plugs by
tightening them until they stop. NOTICE:
Before installing the stern drain plugs,
clean the drain plug threads and the
O-rings on the plugs to remove any
foreign materials, such as dirt or sand.
Otherwise, the stern drain plugs could
be damaged, allowing water to enter
the engine compartment. Check theO-rings on the stern drain plugs and
make sure that the plugs are tightened
securely before launching the water-
craft. Otherwise, water may flood the
engine compartment and cause the
watercraft to submerge.
[ECJ00363]
EJU40535
Draining the bilge water on water
A small quantity of bilge water will remain in
the engine compartment even after the bilge
water is drained on water. To completely
drain the bilge water, remove the watercraft
from the water and drain the bilge water on
land.
Jet vacuum bilge draining system
While the watercraft is operating, bilge water
in the engine compartment is drawn in by the
vacuum that is generated in the jet pump and
discharged from the watercraft through the
jet thrust nozzle.
To drain the bilge water on water:
Operate the watercraft as straight as possible
and above planing speed for at least 2 min-
utes. NOTICE: Do not run the engine at full
throttle for at least 1 minute after the en-
gine has been restarted. Bilge water in the
engine compartment can splash into the
1Stern drain plug
1
1O-ring
1
UF4G70E0.book Page 54 Monday, September 28, 2015 3:14 PM

Operation and handling requirements
55
engine, which can result in severe dam-
age.
[ECJ00554]EJU42432Transporting on a trailer
When transporting the watercraft on a trailer,
secure the tie downs to the trailer through the
bow eye and stern eyes. NOTICE: Do not at-
tach 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 watercraft to avoid scratches
or damage.
[ECJ02150]
UF4G70E0.book Page 55 Monday, September 28, 2015 3:14 PM

Pre-operation checks
58
TIP:
To ensure safety and reliability, pre-operation checks should be made each time the water-
craft is used.
Stern drain plugsCheck the stern drain plugs for damage and foreign
material and check that they are securely installed.64
HoodCheck that the hood is securely closed. 65
Front and rear seatsCheck that the seats are securely installed. 43
POST-LAUNCH CHECKS
Cooling water pilot outletCheck that water is discharged from the cooling
water pilot outlet while the engine is running.65
Multifunction information
centerCheck the multifunction information center for prop-
er operation.65
Shift systemCheck the shift system for proper operation. 66
Engine idling speedCheck the engine idling speed. 66 ITEM ROUTINE PAGE
UF4G70E0.book Page 58 Monday, September 28, 2015 3:14 PM

Pre-operation checks
59
EJU32282
Pre-operation check pointsEJU42383Pre-launch checks
Perform the pre-launch checks in the pre-op-
eration checklist while the watercraft is on
land.
To perform the pre-launch checks:
(1) Remove the seats and removable water-
tight storage compartment. (See page 43
for seat removal and installation proce-
dures and page 48 for information on the
removable watertight storage compart-
ment.)
(2) Perform the checks and make sure that
there are no malfunctioning items or oth-
er problems.
(3) After completing these checks, securely
install the removable watertight storage
compartment and seats in their original
positions.
EJU32334Engine compartment check
WARNING
EWJ00462
Failure to ventilate the engine compart-
ment could result in a fire or explosion. Do
not start the engine if there is a fuel leak.
Ventilate the engine compartment. Leave the
engine compartment open for a few minutes
to allow any fuel vapors to escape.Make sure that there is no damage inside the
engine compartment.
EJU34215Fuel system checks
WARNING
EWJ00382
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.
Make sure that there is no damage, leakage,
or other problem in the fuel system.
Check:
Fuel filler cap and seal for damage
Fuel tank for damage and leakage
Fuel hoses and joints for damage and leak-
age
Fuel tank breather hose for damage and
leakage
EJU36875Fuel level check
Check the fuel level in the fuel tank.
Add fuel if necessary. (See page 50 for infor-
mation on filling the fuel tank.)
EJU32424Water separator check
Make sure that no water has collected in the
water separator. If water has collected in the
UF4G70E0.book Page 59 Monday, September 28, 2015 3:14 PM

Pre-operation checks
61
aged, obstructed, or not connected prop-
erly.
[EWJ00452]
Make sure that the electrolyte level is be-
tween the minimum and maximum level
marks. WARNING! Never operate the wa-
tercraft if the battery does not have suffi-
cient power to start the engine or if it
shows any other signs of decreased pow-
er. Loss of battery power may leave you
stranded.
[EWJ01241]
Make sure that the battery is securely held in
place.
EJU32614Steering system checks
Turn the handlebars to the right and left sev-
eral times to make sure that operation is
smooth and unrestricted throughout thewhole range, and that the free play is not ex-
cessive.
Turn the handlebars as far as possible to the
right and left to make sure that the jet thrust
nozzle moves as the handlebars are turned,
and that there is no difference between the
1Negative (–) battery terminal: Black lead
2Positive (+) battery terminal: Red lead
3Breather hose
1Maximum level mark
2Minimum level mark
1
32
UF4G70E0.book Page 61 Monday, September 28, 2015 3:14 PM