steering YAMAHA EX DELUXE 2021 Owners Manual

Table of contents
General and important labels ........... 1Identification numbers .................... 1
Primary Identification (PRI-ID)
number............................................ 1
Craft Identification Number (CIN) ....... 1
Engine serial number.......................... 2
Manufactured date label .................... 2
Model information ........................... 3
Builder’s plate .................................... 3
Important labels .............................. 4
Warning labels.................................... 5
Other labels ........................................ 8
Safety information ............................. 9 Limitations on who may operate the watercraft ............................... 9
Cruising limitations ........................ 10
Operation requirements ................ 11
Recommended equipment ........... 13
Hazard information........................ 14
Watercraft characteristics ............. 14
Wakeboarding and water-skiing ... 16
Safe boating rules ......................... 17
Enjoy your watercraft responsibly ................................. 18
Description....................................... 19 Watercraft glossary ....................... 19
Location of main components ...... 20
Control function operation ............. 24 Watercraft control functions ......... 24
Engine stop switch .......................... 24
Engine shut-off switch .................... 24
Start switch ..................................... 24
Throttle lever .................................... 25
RiDE lever (EX DELUXE / EX
LIMITED) ....................................... 25
Steering system ............................... 25
Cooling water pilot outlet ................. 26
Water separator................................ 26
Watercraft operation ...................... 28 Watercraft operation functions ..... 28
Reverse system (EX SPORT) ............ 28
Shift system (EX DELUXE / EX
LIMITED) ....................................... 29
Instrument operation ...................... 32Multifunction information center ... 32
Information display ........................... 32
Equipment operation ...................... 37Equipment..................................... 37
Seat .................................................. 37
Handgrip........................................... 37
Reboarding grip................................ 38
Reboarding step (EX SPORT / EX
DELUXE / EX LIMITED) ................ 38
Bow eye............................................ 39
Stern eyes ........................................ 39
Cleat ................................................. 39
Pull-up cleats (EX LIMITED) ............ 39
Storage compartments .................... 39
Fire extinguisher holder .................... 42
Operation and handling
requirements ................................... 43 Fuel requirements ......................... 43
Fuel................................................... 43
Engine oil requirements ................ 45
Engine oil .......................................... 45
Draining the bilge water ................ 47
Draining the bilge water on land....... 47
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
UF3Y74E0.book Page 1 Monday, June 22, 2020 5:11 PM

Safety information
10
EJU44481
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, go too close to other
boats, or go too fast for the traffic condi-
tions.
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 / EX LIMITED: Take early ac-
tion to avoid collisions. Remember, water-
craft and other boats do not have brakes.
In addition, the Reverse with Intuitive De-
celeration Electronics (RiDE) system is not
a braking device for avoiding dangerous
situations. The RiDE system is an electron-
ic system for controlling the engine speed
and reverse gate, which is located near the
jet thrust nozzle. The RiDE lever located atthe left handlebar grip can be used to
change the direction of the jet thrust so that
the watercraft moves in reverse or is in neu-
tral. The RiDE system assists the operator
when slowing down and during slow-
speed maneuvering, such as launching,
beaching, and docking.
EX DELUXE / EX LIMITED: Avoid sharp
turns, slowing down rapidly by squeezing
the RiDE lever forcefully, and other maneu-
vers that make it hard for others to avoid
you or understand 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—as with other
powerboats, you need throttle to steer. Al-
ways check throttle and steering controls
before starting the watercraft.
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.
Avoid aggressive operation, sharp turns,
and unexpected acceleration that can
cause you to be thrown off. Do not jump
waves or wakes—jumping can cause inju-
ries such as back or spinal injuries (paraly-
sis), facial injuries, and broken legs, ankles,
and other bones. Improper operation can
result in severe injury or death.
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
UF3Y74E0.book Page 10 Monday, June 22, 2020 5:11 PM

Safety information
14
EJU44610
Hazard information
Never start the engine or let it run for any
length of time in an enclosed area. Exhaust
fumes contain carbon monoxide, a color-
less, odorless gas that may cause loss of
consciousness and death within a short
time. Always operate the watercraft in an
open area.
Do not touch the hot oil tank, muffler, or en-
gine during or immediately after engine op-
eration; they can cause serious burns.
Do not place magnets or objects with a
strong magnetic force near the throttle lever
or RiDE lever (EX DELUXE / EX LIMITED).
The electronic throttle mechanism of the le-
vers can be adversely affected, which could
cause loss of control. In addition, do not
place objects susceptible to magnetic forc-
es (i.e., credit cards, watches, etc.) close to
the throttle lever or RiDE lever.
EJU44341
Watercraft characteristics
Jet thrust turns the watercraft. Releasing
the throttle lever completely produces only
minimum thrust. If you are traveling at
speeds above trolling, you will have rapidly
decreasing ability to steer without throttle.
This model is equipped with the Yamaha
Engine Management System (YEMS) that
includes an off-throttle steering (OTS) sys-
tem. 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 sharp-
ly if you apply throttle while turning the han-
dlebars.
The OTS system does not function below
planing speeds or when the engine is off.
Once the engine slows down, the water-
craft will no longer turn in response to han-
dlebar input until you apply throttle again or
you reach trolling speed.
Practice turning in an open area without
obstacles until you have a good feel for this
maneuver.
EX: This watercraft is water-jet propelled.
The jet pump is directly connected to the
engine. This means that jet thrust will pro-
duce some movement whenever the en-
gine is running. There is no “neutral”
position.
EX SPORT: 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. There is no “neutral” po-
sition. You are in either “forward” or “re-
verse”, depending upon the shift lever
position.
UF3Y74E0.book Page 14 Monday, June 22, 2020 5:11 PM

Safety information
17
er’s or water-skier’s ability, as well as water
and weather conditions.
When preparing to pull a wakeboarder or
water-skier, operate the watercraft at the
slowest possible speed until the watercraft
is well away from the person being pulled
and slack in the ski rope is taken up. Make
sure that the rope is not looped around
anything.
After checking that the wakeboarder or wa-
ter-skier is ready and that there is no traffic
or other obstacles, apply enough throttle to
raise the person.
Make smooth, wide turns. The watercraft is
capable of very sharp turns, which could
exceed the abilities of the wakeboarder or
water-skier. Keep the person being towed
at least 50 m (164 ft), about twice the dis-
tance of a standard ski rope, away from
any potential hazard.
The operators of boats and other water-
craft may not be aware that you are pulling
a wakeboarder or water-skier. Together
with the spotter, pay attention to others
around you and cruise at safe speeds.
Be alert to the hazard of the ski rope handle
snapping back at the watercraft when the
wakeboarder or water-skier falls or is un-
able to get up.
Towing heavy or bulky objects other than
wakeboarders or water-skiers, such as an-
other boat or watercraft, can cause loss of
steering control and create a hazardous
condition. If you must tow another boat in
an emergency situation, operate slowly
and cautiously.
EJU30971
Safe boating rules
Your Yamaha watercraft is legally considered
a powerboat. Operation of the watercraft
must be in accordance with the rules and
regulations governing the waterway on which
it is used.
UF3Y74E0.book Page 17 Monday, June 22, 2020 5:11 PM

Description
19
EJU43331
Watercraft glossary
Trolling speed
“Trolling” is the lowest maneuvering speed. You are applying little or no throttle. The water-
craft is down in the water, and there is no wake.
Sub-planing speed
“Sub-planing” is a medium speed. The bow of the watercraft is slightly up from the water sur-
face, but you are still traveling through the water. There is a wake.
Planing speed
“Planing” is a faster speed. The watercraft is more level and is skimming on top of the water.
There is a wake.
Bow
The front end of the watercraft.
Stern
The rear end of the watercraft.
Starboard
The right side of the watercraft when facing forward.
Port
The left side of the watercraft when facing forward.
Bilge water
Water that has collected in the engine compartment.
Yamaha Engine Management System (YEMS) YEMS is an integrated, computerized management system that controls and adjusts ignition
timing, fuel injection, engine diagnostics, and the off-throttle steering (OTS) system.
Reverse with Intuitive Deceleration Electronics (RiDE)
RiDE is an electronic system that controls the reverse, neutral, and deceleration operations of
the watercraft.
UF3Y74E0.book Page 19 Monday, June 22, 2020 5:11 PM

Control function operation
25
will not start. Also, the starter motor could
be damaged.
[ECJ01041]
The engine will not start under any of the fol-
lowing conditions:
Clip is removed from the engine shut-off
switch.
Throttle lever is squeezed.
Throttle lever is malfunctioning.
EX DELUXE / EX LIMITED: RiDE lever is
squeezed.
EX DELUXE / EX LIMITED: RiDE lever is
malfunctioning.
EJU31212Throttle lever
The throttle lever increases the engine speed
when the lever is squeezed.
The throttle lever returns automatically to its
fully closed (idle) position when released.
EJU43342RiDE lever (EX DELUXE / EX LIMITED)
When the RiDE lever is squeezed, the reverse
gate lowers and the watercraft starts moving
in reverse. If the watercraft is moving forward,
the watercraft gradually slows down until it
stops, and then the watercraft starts moving
in reverse.
When the RiDE lever is released, it automati-
cally returns to its fully closed (idle) position
and the reverse gate moves to the neutral po-
sition.
EJU31262Steering system
By turning the handlebars in the direction you
wish to travel, the angle of the jet thrust noz-
1Start switch
1 Throttle lever
1
1
1RiDE lever
1
UF3Y74E0.book Page 25 Monday, June 22, 2020 5:11 PM

Control function operation
26
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 89 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
2 Jet thrust nozzle
1
21Cooling water pilot outlet
1
UF3Y74E0.book Page 26 Monday, June 22, 2020 5:11 PM

Pre-operation checks
51
EJU31982
EWJ00412
Failure to inspect or maintain the watercraft properly increases the possibility of an ac-
cident or damage to the watercraft. Do not operate the watercraft if you find any prob-
lem. If a problem cannot be corrected by the procedures provided in this manual, have
the watercraft inspected by a Yamaha dealer.
EJU41235Pre-operation checklist
Before using this watercraft, be sure to perform the checks in the following checklist.
ITEMROUTINEPAGE
PRE-LAUNCH CHECKS
Engine compartment Ventilate the engine compartment.
Check inside the engine compartment for damage.
53
Fuel system Check the fuel system for leakage.
Check the fuel level in the fuel tank.
53
Water separator Check the water separator for water. 54
Engine unit Check the exterior of the engine unit for damage. 54
Engine oil level Check the engine oil level. 54
Bilge water Check the engine compartment for bilge water. 54
Battery Check the battery connections. 54
Steering system Check the steering system for proper operation. 55
Reverse system (EX
SPORT) Check the reverse system for proper operation.
55
RiDE lever (EX DELUXE /
EX LIMITED) Check the RiDE lever for proper operation.
56
Throttle lever Check the throttle lever for proper operation. 56
Engine shut-off cord (lan-
yard) Check the engine shut-off cord (lanyard) for dam-
age.
56
Switches Check the start switch, engine stop switch, and en-
gine shut-off switch for proper operation.
57
Storage compartments Check the storage compartments for damage and
water.
57
Fire extinguisher holder Check the fire extinguisher holder for damage. 57
Fire extinguisher Check the condition of the fire extinguisher. 57
Safety equipment Check that safety equipment meeting the applica-
ble regulations is on board.
58
Hull and deck Check the hull and deck for damage. 58
Jet intake Check the jet intake for damage and clogging. 58
Jet thrust nozzle and re-
verse gate (EX SPORT / EX
DELUXE / EX LIMITED) Check the jet thrust nozzle and reverse gate for
damage.
58
UF3Y74E0.book Page 51 Monday, June 22, 2020 5:11 PM

Pre-operation checks
55
the watercraft if the battery does not have
sufficient 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 the
whole 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 right and left fully turned positions of the jet
thrust nozzle.
EJU32636Reverse system checks (EX SPORT)EWJ00032
Do not touch the reverse gate while the
shift lever is being operated, otherwise
you could be pinched.
1
Negative (–) battery terminal: Black lead
2 Positive (+) battery terminal: Red lead
1
2
Difference between fully turned posi-
tions of jet thrust nozzle (distances A
and B):
Maximum 5 mm (0.20 in)
UF3Y74E0.book Page 55 Monday, June 22, 2020 5:11 PM

Operation
64
(idle) position. (See page 29 for shift system
operation procedures.)
EJU43423Turning the watercraftEWJ01783
Do not release the throttle lever when
trying to steer away from objects—as
with other powerboats, you need throt-
tle to steer. A collision could result in se-
vere injury or death.
When operating at higher speeds, make
gradual turns or slow down before turn-
ing. Sharp high-speed turns may cause
the watercraft to slide sideways or spin,
throwing the operator and passenger(s)
overboard, which could cause an injury.
EX DELUXE / EX LIMITED: Take early
action to avoid collisions. The RiDE sys-tem is not a braking device for avoiding
dangerous situations.
Steering control depends on the combination
of handlebar position and the amount of
throttle.
Water sucked in through the intake grate is
pressurized by the impeller in the jet pump.
As the pressurized water is expelled from the
pump through the jet thrust nozzle, it creates
thrust to move and steer the watercraft. The
higher the engine speed, the more thrust pro-
duced.
The amount of jet thrust, in addition to the po-
sition of the handlebars, determines how
sharply you turn.
A. More throttle produces higher thrust, so
the watercraft will turn more sharply.
B. Less throttle produces lower thrust, so the watercraft will turn more gradually.
C. Releasing the throttle lever completely produces only minimum thrust. If you are
1“F” (Forward position)
1
UF3Y74E0.book Page 64 Monday, June 22, 2020 5:11 PM