engine YAMAHA EX DELUXE 2021 Workshop Manual

Operation
69
holding on to the person in front of them
or to the handgrip provided.
Before boarding the watercraft, make
sure that the engine is stopped. If the
engine is running, the reverse gate may
move down and a person boarding
could be pinched.
The heavier the total weight of the operator
and passenger(s), the more difficult it will be
to balance the watercraft. Do not operate the
watercraft when the total weight exceeds 225
kg (496 lb) including any cargo.
To board with passenger(s):
(1) Board as noted in the previous section“Boarding alone”.
(2) Grip the handlebars with both hands and place both feet on the floor of the foot-
well.
(3) Have the first passenger move to the rear of the watercraft. (4) Have the first passenger board using the
same procedure as the operator, place
their feet on the floor of the footwell, and
securely hold on to the operator.
(5) Have the second passenger follow the same procedure. When the second pas-
senger is boarding, try to balance the
watercraft together with the first passen-
ger.
(6) Make sure that the passenger(s) have their feet on the floor of the footwell and
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Operation
70
are securely holding on to the person in
front of them or to the handgrip provided.
(7) Attach the engine shut-off cord (lanyard) to your left wrist, and then attach the clip
to the engine shut-off switch.
(8) Look in all directions, start the engine, and then start off slowly.
EJU33084Starting offEWJ00713
To avoid collisions:
Scan constantly for people, objects, and
other watercraft. Be alert for conditions
that limit your visibility or block your vi-
sion 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 conditions. Avoid sharp turns
or other maneuvers that make it hard for
others to avoid you or understand where
you are going. Avoid areas with sub-
merged objects or shallow water.
Take early action to avoid collisions. Re-
member, watercraft and other boats do
not have brakes. Do not release the
throttle lever when trying to steer away from objects—as with other power-
boats, you need throttle to steer.
ECJ01341
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, caus-
ing impeller damage and engine overheat-
ing.
EJU44381Starting off from a trailer
EX:
(1) Launch the watercraft, and then turn it
around so that the bow faces the direc-
tion you wish to go.
(2) Attach the engine shut-off cord (lanyard) to your left wrist, and then attach the clip
to the engine shut-off switch.
(3) Look in all directions, start the engine, and then start off slowly.
EX SPORT:
(1) Launch the watercraft, and then move the shift lever to the reverse position.
(See page 28 for information on the re-
verse system.)
(2) Attach the engine shut-off cord (lanyard) to your left wrist, and then attach the clip
to the engine shut-off switch.
(3) Look in all directions, start the engine, and then start off slowly.
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Operation
71
EX DELUXE / EX LIMITED:
(1) Launch the watercraft.
(2) Attach the engine shut-off cord (lanyard)to your left wrist, and then attach the clip
to the engine shut-off switch.
(3) Look in all directions, and then start the engine.
(4) Squeeze the RiDE lever and move the watercraft back slowly. (See page 29 for
RiDE lever operation procedures.)
EJU33114Boarding and starting off from a dock
(1) Board the watercraft from the side.
(2) Attach the engine shut-off cord (lanyard)to your left wrist, and then attach the clip
to the engine shut-off switch.
(3) Push the watercraft away from the dock, grip the handlebars with both hands, and
place both feet on the floor of the foot-
well.
(4) Look in all directions, start the engine, and then start off slowly.
EJU44210Capsized watercraftEWJ00672
Improper uprighting can cause injury.
Be sure to shut the engine off by pulling
on the engine shut-off cord (lanyard) to
remove the clip from the engine shut-off
switch.
Do not put your hands in the intake
grate.
If the watercraft capsizes, turn it over imme-
diately.
To upright the watercraft:
(1) Remove the clip from the engine shut-offswitch.
(2) Swim to the rear of the watercraft. Turn the watercraft over by pulling on the ride
plate with one hand while pushing down
on the gunwale with your other hand or
your foot.
(3) Start the engine and operate the water- craft at planing speed to drain the bilge
water from the engine compartment.
(See page 47 for information on draining
the bilge water. If the engine does not
start, see “Towing the watercraft” on
page 91 or “Submerged watercraft” on
page 91.) NOTICE: Do not run the en-
gine at full throttle for at least 1 minute
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Operation
72
after the engine has been restarted.
Bilge water in the engine compart-
ment can splash into the engine,
which can result in severe damage.
[ECJ00554]
EJU44390
Beaching and docking the watercraft
To beach the watercraft (EX / EX SPORT):
(1) Make sure that there are no boats, swim- mers, or obstacles near the beach.
(2) Release the throttle lever to reduce speed about 90 m (300 ft) before you
reach the intended beaching area.
(3) Slowly approach the beach and stop the engine just before reaching land.
WARNING! You need throttle to steer. Shutting the engine off can cause you
to hit an obstacle you are attempting
to avoid. A collision could result in se-
vere injury or death.
[EWJ00602] 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]
(4) Get off the watercraft and pull it up on the beach.
To beach the watercraft (EX DELUXE / EX
LIMITED):
(1) Make sure that there are no boats, swim- mers, or obstacles near the beach.
(2) Release the throttle lever to reduce speed about 90 m (300 ft) before you
reach the intended beaching area.
(3) Slowly approach the beach using the throttle lever and RiDE lever to control
the watercraft speed. 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 damage and
engine overheating.
[ECJ00473]
(4) After reaching land, stop the engine, and
then get off the watercraft and pull it up
on the beach.
To dock the watercraft (EX / EX SPORT):
(1) Make sure that there are no boats, swim- mers, or obstacles near the dock.
(2) Release the throttle lever to reduce speed about 90 m (300 ft) away from the
dock.
(3) Slowly approach the dock and stop the engine just before coming alongside it.
WARNING! You need throttle to steer. Shutting the engine off can cause you
to hit an obstacle you are attempting
to avoid. A collision could result in se-
vere injury or death.
[EWJ00602]
(4) Come alongside the dock and get off the watercraft.
To dock the watercraft (EX DELUXE / EX
LIMITED):
(1) Make sure that there are no boats, swim- mers, or obstacles near the dock.
(2) Release the throttle lever to reduce speed about 90 m (300 ft) away from the
dock.
(3) Slowly approach the dock using the throttle lever and RiDE lever to control
the watercraft speed.
(4) After coming alongside the dock, stop the engine, and then get off the water-
craft.
EJU37194Operating in weeded areas
Always avoid using your watercraft in areas
where weed growth is thick. If operating in
weeded areas is unavoidable, alternately
squeeze the throttle lever and relax your grip
on the throttle lever to vary the engine speed.
Weeds tend to become clogged more when
operating at a steady speed and at trolling
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Operation
73
speed. If weeds may have clogged the intake
area, clean the jet intake. (See page 89 for in-
formation on the jet intake.)
EJU40242After removing the watercraft from
the water
ECJ01311
Do not run the engine over 4000 r/min on
land. Also, do not run the engine for more
than 15 seconds without supplying water,
otherwise the engine could overheat.
After operating and removing the watercraft
from the water, promptly discharge the re-
maining water from the cooling water pas-
sages.
To discharge water from the cooling water
passages:
(1) Make sure that the area around the wa- tercraft is clear, and then start the en-
gine.
(2) Discharge the remaining water out of the cooling water passages by alternately
squeezing and releasing the throttle lever
quickly for 10 to 15 seconds.
(3) Stop the engine.
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Care and storage
74
EJU37146
Post-operation careEWJ00331
Always place the watercraft upright in a
horizontal position when storing it, other-
wise fuel could leak out into the engine or
engine compartment, which could create
a fire hazard.
After using the watercraft, always take it out
of the water, clean it, and store it. Leaving the
watercraft in the water for extended periods
will accelerate the rate of normal deteriora-
tion of the jet pump and hull. Marine organ-
isms and corrosion are some of the
conditions that can shorten the life of many
watercraft components.
EJU44560Flushing the cooling water passagesECJ01311
Do not run the engine over 4000 r/min on
land. Also, do not run the engine for more
than 15 seconds without supplying water,
otherwise the engine could overheat.
Flush the cooling water passages to prevent
them from clogging with salt, sand, or dirt.
(1) Place the watercraft in a horizontal posi-tion.
(2) Remove the seat and seat storage com- partment. (See page 37 for seat removal
and installation procedures and page 41
for information on the seat storage com-
partment.) (3) Connect the garden hose adapter to a
garden hose.
(4) Loosen the flushing hose connector cap and remove it. Insert the garden hose
adapter into the flushing hose connector
by pushing and twisting it until it is se-
curely connected.
(5) Connect the garden hose to a water tap.
(6) Make sure that the area around the wa- tercraft is clear, and then start the en-
gine. Immediately after the engine starts,
fully turn the water supply on so that wa-
1Garden hose adapter
2 Garden hose
1 Flushing hose connector cap
2 Flushing hose connector
3 Garden hose adapter
12
32
1
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Care and storage
75
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 seat storage com- partment and seat in their original posi-
tions.
EJU44770Cleaning the watercraft
(1) Remove the seat and fire extinguisherholder. (See page 37 for seat removal
and installation procedures and page 42 for information on the fire extinguisher
holder.)
(2) If the watercraft will be stored for a week or more, rustproof the internal engine
components to help prevent corrosion.
(See page 78 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 47 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 seat 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 seat.
(11) Securely install the fire extinguisher hold- er and seat in their original positions.
EJU3368ABattery 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.
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Care and storage
77
(2) If the battery terminals are dirty or cor-roded, clean them using a wire brush.
(3) Apply water-resistant grease to the bat- tery terminals.
(4) Store the battery in a cool, dry place. NOTICE: Storing the battery in an un-
charged condition can cause perma-
nent battery damage. Check the
battery periodically.
[ECJ00103]
To install the battery:
(1) Place the battery in the battery compart- ment and hook the battery bands onto
the holders.
(2) Connect the positive (+) battery lead (red) to the positive (+) battery terminal.
NOTICE: Reversal of the battery leads
will damage the electrical parts.
[ECJ00262]
(3) Connect the negative (–) battery lead (black) to the negative (–) battery termi-
nal.
(4) Make sure that the battery is securely held in place.
EJU33493
Long-term storageEWJ00331
Always place the watercraft upright in a
horizontal position when storing it, other-
wise fuel could leak out into the engine or
engine compartment, which could create
a fire hazard.
Storage for long periods of time, such as win-
ter storage, requires preventive maintenance
to ensure against deterioration. It is advisable
to have the watercraft serviced by a Yamaha
dealer prior to storage.
However, the following procedures can be
performed easily by the owner.
EJU40763Cleaning
(1) Flush the cooling water passages. (See
page 74 for information on flushing the
cooling water passages.)
TIP:
If you will be storing the watercraft for a pro-
longed period, such as winter storage, top off
the fuel tank with fresh gasoline and add fuel
stabilizer and conditioner to the fuel tank ac-
cording to the manufacturer’s instruction be-
fore starting the engine.
(2) Clean the watercraft. (See page 75 for in-formation on cleaning the watercraft.)
Wax the hull with a non-abrasive wax.
EJU44402Lubrication
To keep moving parts sliding or rotating
smoothly, lubricate them with water-resistant
grease.
1Battery terminal
Recommended water-resistant grease:
YAMALUBE MARINE
GREASE/Yamaha Grease A
1
Recommended water-resistant grease:YAMALUBE MARINE GREASE /
Ya m a h a G r e a s e A
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Care and storage
78
Steering cable (jet thrust nozzle end)
EX SPORT: Shift cable (reverse gate end)
and ball joint
TIP:
Disconnect the shift cable from the ball joint
before lubricating.
EX DELUXE / EX LIMITED: Shift rod (re-
verse gate end) and ball joint
TIP:
Disconnect the shift rod from the ball joint be-
fore lubricating.
EJU44790Rustproofing
Rustproofing the hull, deck, and engine
Spray metallic parts of the hull, deck, and en-
gine with a rust inhibitor.
Rustproofing the internal engine compo-
nents
Rustproof the internal engine components
with a rust inhibitor.
To rustproof the internal engine components:
(1) Remove the seat and fire extinguisherholder. (See page 37 for seat removal
and installation procedures and page 42
for information on the fire extinguisher
holder.)
(2) Remove the plastic tie that is fastening the fuel hose to the holder on the star-
board side of the air filter case.
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Care and storage
79
(3) Release the hooks on the port side of theair filter case, and remove the air filter
case cover.
(4) Spray a rust inhibitor into the intake opening for 3 seconds. WARNING! Do
not spray flammable rust inhibitor
products on engine surfaces while the engine is hot. The sprayed substance
or propellants could catch fire.
[EWJ00262]
(5) Place the air filter case cover in its origi-
nal position, and then fit the hooks onto
the cover.
TIP:
Make sure that the air filter case cover is se-
curely installed.
(6) Fasten the fuel hose to the holder usingthe plastic tie.
(7) Make sure that the area around the wa- tercraft is clear, and then start the engine
in a well-ventilated area and let it run at
idle for 15 seconds. (See page 24 for in-
formation on starting the engine.)
(8) Stop the engine.
(9) Securely install the fire extinguisher hold- er and seat in their original positions.
1Hook
2 Air filter case cover
3 Fuel hose
4 Holder
5 Plastic tie
1
23
4
5
1Intake opening
1
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