2018 YAMAHA EX check engine

Table of contents
General and important labels ........... 1
Identification numbers .................... 1
Primary Identification (PRI-ID)
number............................................ 1
Craft Identification Number (CIN) ....... 1
Engine serial number.......................... 1
Manufactured date label .................... 2
Model information ........................... 2
Builder’s plate .................................... 2
Important labels .............................. 4
Warning labels.................................... 5
Other labels ........................................ 9
Safety information ........................... 10
Limitations on who may operate
the watercraft ............................. 10
Cruising limitations ........................ 11
Operation requirements ................ 12
Recommended equipment ........... 14
Hazard information........................ 15
Watercraft characteristics ............. 15
Wakeboarding and water-skiing ... 17
Safe boating rules ......................... 18
Enjoy your watercraft
responsibly ................................. 19
Description....................................... 20
Watercraft glossary ....................... 20
Location of main components ...... 21
Control function operation ............. 25
Watercraft control functions ......... 25
Engine stop switch .......................... 25
Engine shut-off switch .................... 25
Start switch ..................................... 25
Throttle lever .................................... 26
RiDE lever (EX Deluxe) ..................... 26
Steering system ............................... 26
Cooling water pilot outlet ................. 27
Water separator................................ 27
Watercraft operation ...................... 29
Watercraft operation functions ..... 29
Reverse system (EX Sport) ............... 29
Shift system (EX Deluxe) .................. 29
Instrument operation ...................... 33
Multifunction information center ... 33
Information display ........................... 33
Equipment operation ...................... 38
Equipment..................................... 38
Seat .................................................. 38
Handgrip........................................... 38
Reboarding grip................................ 39
Reboarding step
(EX Sport / EX Deluxe) .................. 39
Bow eye............................................ 39
Stern eyes ........................................ 40
Cleat ................................................. 40
Storage compartments .................... 40
Fire extinguisher holder .................... 43
Operation and handling
requirements ................................... 44
Fuel requirements ......................... 44
Fuel................................................... 44
Engine oil requirements ................ 46
Engine oil .......................................... 46
Draining the bilge water ................ 48
Draining the bilge water on land....... 48
Draining the bilge water on water .... 48
Transporting on a trailer................ 49
First-time operation ........................ 50
Engine break-in............................. 50
Pre-operation checks ..................... 51
Pre-operation checklist .................... 51
Pre-operation check points .......... 53
Pre-launch checks ........................... 53
Post-launch checks.......................... 59
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Safety information
11
EJU44480
Cruising limitations
Scan constantly for people, objects, and
other watercraft. Be alert for conditions
that limit your visibility or block your vision
of others.
Operate defensively at safe speeds and
keep a safe distance away from people,
objects, and other watercraft.
Do not follow directly behind watercraft or
other boats.
Do not go near others to spray or splash
them with water.
EX / EX Sport: Take early action to avoid
collisions. Remember, watercraft and other
boats do not have brakes.
EX / EX Sport: Avoid sharp turns or other
maneuvers that make it hard for others to
avoid you or understand where you are go-
ing.
EX Deluxe: Take early action to avoid colli-
sions. Remember, watercraft and other
boats do not have brakes. In addition, the
Reverse with Intuitive Deceleration Elec-
tronics (RiDE) system is not a braking de-
vice for avoiding dangerous situations. The
RiDE system is an electronic system for
controlling the engine speed and reverse
gate, which is located near the jet thrust
nozzle. The RiDE lever located at the left
handlebar grip can be used to change the
direction of the jet thrust so that the water-craft moves in reverse or is in neutral. The
RiDE system assists the operator when
slowing down and during slow-speed ma-
neuvering, such as launching, beaching,
and docking.
EX Deluxe: Avoid sharp turns, slowing
down rapidly by squeezing the RiDE lever
forcefully, and other maneuvers that make
it hard for others to avoid you or under-
stand where you are going.
Avoid areas with submerged objects or
shallow water.
Do not release the throttle lever when trying
to steer away from objects—you need
throttle to steer. Always check throttle and
steering controls before starting the water-
craft.
Ride within your limits and avoid aggres-
sive maneuvers to reduce the risk of loss of
control, ejection, and collision.
This is a high performance boat—not a toy.
Sharp turns or jumping wakes or waves
can increase the risk of back/spinal injury
(paralysis), facial injuries, and broken legs,
ankles, and other bones. Do not jump
wakes or waves.
Do not operate the watercraft in rough wa-
ter, bad weather, or when visibility is poor;
this may lead to an accident causing injury
or death. Be alert to the possibility of ad-
verse weather. Take note of weather fore-
casts and the prevailing weather
conditions before setting out on your wa-
tercraft.
As with any water sport, you should not op-
erate your watercraft without someone else
nearby. If you operate further than swim-
ming distance from shore, you should be
accompanied by another boat or water-
craft, but make sure you stay a safe dis-
tance away. It’s good, common sense.
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Safety information
13
in certain kinds of accidents and that it
could injure you in others.
A helmet is designed to provide some head
protection. Although helmets cannot pro-
tect against all foreseeable impacts, a hel-
met might reduce your injuries in a collision
with a boat or other obstacle.
A helmet may have potential safety haz-
ards, as well. Falling into the water could
risk the chance of the helmet catching wa-
ter, commonly known as “bucketing”, and
the resulting strain on your neck could cau-
se choking, severe and permanent neck in-
juries, or death. A helmet could also
increase the risk of an accident if it reduces
your vision or hearing, or if it distracts you
or increases your fatigue.
How should you decide if a helmet’s poten-
tial safety benefits outweigh its potential
risks for you? Consider your particular rid-
ing conditions. Consider factors such as
your riding environment and your riding
style and ability. Also consider the likeli-
hood of traffic congestion, and the water
surface conditions.
If you decide to wear a helmet based upon
your riding circumstances, choose one
carefully. Look for a helmet designed for
personal watercraft use, if possible. If you
will be engaging in closed-course competi-
tion, follow the helmet requirements of the
sanctioning organization.
Never operate the watercraft after consum-
ing alcohol or taking other drugs.
For reasons of safety and proper care of
the watercraft, always perform the pre-op-
eration checks listed on page 51 before op-
erating the watercraft.
The operator should grip the handlebars
firmly with both hands and the passengers
should hold on firmly, either to the personin front of them or to the handgrip provid-
ed.
The operator and passengers should al-
ways keep their feet on the floor of the foot-
well when the watercraft is in motion.
Lifting your feet increases the chances of
losing your balance, or hitting objects out-
side the watercraft with your feet. Do not
give a ride to children if their feet cannot
reach the floor of the footwell.
Never allow a passenger to ride in front of
the operator.
Always consult your doctor on whether it is
safe for you to ride this watercraft if you are
pregnant or in poor health.
Do not attempt to modify this watercraft.
Modifications to your watercraft may re-
duce safety and reliability, and render the
watercraft unsafe or illegal for use.
Attach the engine shut-off cord (lanyard) to
y o u r l ef t w r is t an d k ee p i t fr e e f r o m t h e h an -
dlebars so that the engine stops if you, the
operator, fall off. After riding, remove the
engine shut-off cord (lanyard) from the wa-
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Safety information
16
EX Sport: Do not use the reverse function
to slow down or stop the watercraft as it
could cause you to lose control, be eject-
ed, or impact the handlebars.
This could increase the risk of back/spinal
injury (paralysis), facial injuries, and broken
legs, ankles, and other bones. You could
also damage the shift mechanism.
EX Sport: Reverse can be used to slow
down or stop during slow-speed maneu-
vering, such as when docking. Once the
engine is idling, shift into reverse and grad-
ually increase engine speed. Make sure
that there are no obstacles or people be-
hind you before shifting into reverse.
EX Deluxe: This watercraft is water-jet pro-
pelled. The jet pump is directly connected
to the engine. This means that jet thrust will
produce some movement whenever the
engine is running and the “F” (forward) or
“R” (reverse) shift indicator is displayed.
When the “N” (neutral) shift indicator is dis-
played, the forward and reverse thrust are
balanced to help keep the watercraft from
moving in either direction, although some
movement may occur.
EX Deluxe: To avoid rear-end collisions
while operating the watercraft, check be-
hind you before using the RiDE lever to
slow down or stop the watercraft. Makesure that there are no obstacles or people
behind you before shifting into reverse.
Keep away from the intake grate while the
engine is on. Items such as long hair, loose
clothing, or PFD straps can become entan-
gled in moving parts, resulting in severe in-
jury or drowning.
Never insert any object into the jet thrust
nozzle while the engine is running. Severe
injury or death could result from coming in
contact with the rotating parts of the jet
pump.
Stop the engine and remove the clip from
the engine shut-off switch before removing
any debris or weeds, which may have col-
lected around the jet intake.
1“N” (Neutral position)
1
1Intake grate
2Jet thrust nozzle
1Clip
2Engine shut-off switch
1
2
2
1
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Control function operation
27
zle is changed, and the direction of the water-
craft is changed accordingly.
Since the strength of the jet thrust determines
the speed and degree of a turn, throttle must
always be applied when attempting a turn,
except at trolling speed.
This model is equipped with the Yamaha En-
gine Management System (YEMS) that in-
cludes an off-throttle steering (OTS) system.
It will activate at planing speeds should you
attempt to steer the watercraft after releasing
the throttle lever. The OTS system assists in
turning by continuing to supply some thrust
while the watercraft is decelerating, but you
can turn more sharply if you apply throttle
while turning the handlebars. The OTS sys-
tem does not function below planing speeds
or when the engine is off. Once the engine
slows down, the watercraft will no longer turn
in response to handlebar input until you apply
throttle again or you reach trolling speed.EJU35975Cooling water pilot outlet
When the engine is running, some of the
cooling water that is circulated in the engine
is discharged from the cooling water pilot
outlet.
There is a cooling water pilot outlet on the
port (left) side of the watercraft. To check for
proper operation of the cooling system, make
sure that water is being discharged from the
cooling water pilot outlet. If water is not being
discharged from the outlet, stop the engine
and check the jet intake for clogging. (See
page 90 for information on the jet intake.)
TIP:
It will take about 60 seconds for the water
to reach the outlet after the engine is start-
ed.
Water discharge may not be constant
when the engine is running at idling speed.
If this occurs, apply a little throttle to make
sure that water discharges properly.
EJU40323Water separator
The water separator prevents water from en-
tering the fuel tank by collecting any water
that has entered the fuel tank breather hose if
the watercraft was capsized.
1Handlebar
2Jet thrust nozzle
1
21Cooling water pilot outlet
1
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Instrument operation
33
EJU44570
Multifunction information
center
The multifunction information center displays
various watercraft information.
Multifunction information center initial op-
eration
When the multifunction information center is
activated, all of the display segments come
on. After 2 seconds, the warning indicators in
the information display go off, and then the
center starts to operate normally.
Multifunction information center standby
state
If the multifunction information center does
not receive any operation input within 30 sec-
onds after the engine stops, the center will
turn off and enter a standby state. When the
engine is started again, the displays return to
their state before the center turned off, and
then the center starts to operate normally.
EJU35027Information display
The information display shows watercraft op-
erating conditions.
EJU43832Speedometer
The speedometer shows the watercraft
speed against water.
By switching the display units, the speed can
be shown in kilometers per hour “km/h” or
miles per hour “MPH”.
TIP:
“MPH” is selected as the display unit at the
Yamaha factory.
1Information display
2“WARNING” indicator light
12
1Fuel level meter
2Shift indicator (EX Deluxe)
3Engine overheat warning indicator
4Check engine warning indicator
5Tachometer / hour meter / voltmeter
6Oil pressure warning indicator
7Fuel level warning indicator
8Speedometer
1Speedometer
251346
78
1
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Instrument operation
35
The hour meter and voltmeter are displayed
alternately at 3-second intervals.
TIP:
If the engine is stopped after the check en-
gine warning is activated, the hour meter and
error code will be displayed alternately at 3-
second intervals.
Hour meter
The hour meter shows the total number of
hours that the engine has been running since
the watercraft was new.
TIP:
The elapsed time will be kept even if the bat-
tery terminals have been disconnected.
Voltmeter
The voltmeter shows the battery voltage.
When the battery voltage is normal, the volt-
meter displays approximately 12 volts.If the battery voltage has dropped significant-
ly, “Lo” is displayed on the voltmeter, and all
other display segments of the information
display turn off. If the battery voltage has ris-
en significantly, “HI” is displayed. If “Lo” or
“HI” is displayed, immediately return to shore
and have a Yamaha dealer service the water-
craft.
EJU37272Fuel level meter
The fuel level meter shows the amount of fuel
remaining in the fuel tank. The amount of re-
maining fuel is shown using four display seg-
ments, which disappear one at a time as the
fuel level decreases.
TIP:
The accuracy of the fuel level meter varies
depending on the operating conditions. Use
this function as a reference only.
1Hour meter and voltmeter
1Hour meter
1
1
1Vo l t m et e r
1Fuel level meter
1
1
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Instrument operation
36
EJU44710Fuel level warning
If the fuel remaining in the fuel tank drops to
about 8 L (2.1 US gal, 1.8 Imp.gal), the lowest
fuel level segment, the fuel level warning indi-
cator, and the “WARNING” indicator light
blink, and the buzzer sounds intermittently for
30 seconds.
If the fuel level warning is activated, refill the
fuel tank as soon as possible. (See page 44
for information on filling the fuel tank.)
After the fuel tank is refilled, the warning sig-
nals will be cleared when the engine is re-
started.
EJU43720Oil pressure warning
If the oil pressure drops significantly, the oil
pressure warning indicator, the check engine
warning indicator, and the “WARNING” indi-
cator light blink, and the buzzer sounds inter-
mittently for 30 seconds. At the same time,
the maximum engine speed is limited.If the oil pressure warning is activated, imme-
diately reduce the engine speed, return to
shore, and then check the engine oil level.
(See page 46 for information on checking the
engine oil level.) If the oil level is sufficient,
have a Yamaha dealer check the watercraft.
EJU43901Engine overheat warning
If the engine temperature rises significantly,
the engine overheat warning indicator, the
check engine warning indicator, and the
“WARNING” indicator light blink, and the
buzzer sounds intermittently. After 5 sec-
onds, the engine overheat warning indicator
and the “WARNING” indicator light stop
blinking and remain on, and the buzzer
sounds continuously. After 30 seconds, the
buzzer stops. While the engine overheat
warning is activated, the maximum engine
speed is limited.
If the engine overheat warning is activated,
immediately reduce the engine speed, return
to shore, and then make sure that water is
being discharged from the cooling water pilot
outlet while the engine is running. If there is
no discharge of water, stop the engine, and
then check the jet intake for clogging. (See
page 90 for information on the jet intake.)
NOTICE: If you cannot locate and correct
the cause of the overheating, consult a
Yamaha dealer. Continuing to operate at
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