2021 YAMAHA EX DELUXE fuel

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.
UF3Y74E0.book Page 78 Monday, June 22, 2020 5:11 PM

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
UF3Y74E0.book Page 79 Monday, June 22, 2020 5:11 PM

Maintenance
81
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 hours 50 hours
or 12
months *1 100
hours or 12
months *1 200
hours or 24
months *1
Fuel line Check fuel hoses and
clamps
√
—
Fuel filler cap/Wa-
ter separator Check O-rings for cracks
and deformation
√
—
Fuel tank Check installation and
straps
√
—
Water inlet strainer Check for clogs and dam-
age
√
—
Cooling water hos-
es Check for damage and
leakage, and check
clamps
√
—
Engine oil Replace √√ 83
Oil filter Replace √83
Spark plugs Check √√ —
Battery Check state of charge,
terminals and bands
√
—
Battery leads Check terminals √—
Steering master Check operation and for
looseness
√√
—
Steering cable Check exterior and con-
nections, and lubricate
√
—
Shift lever (EX
SPORT) Check exterior and con-
nections, and lubricate
√
—
Shift cable and re-
verse gate (EX
SPORT) Check exterior and con-
nections, and lubricate
√
—
Shift rod and reverse
gate (EX DELUXE /
EX LIMITED)Check exterior and con-
nections, and lubricate √
—
Air filter element Check for damage and
dirt
√
—
Air intake hoses Check for damage, and
check clamps
√
—
UF3Y74E0.book Page 81 Monday, June 22, 2020 5:11 PM

Specifications
84
EJU45442
Specifications
Watercraft capacity:
Maximum people on board:3 person
Maximum load capacity: 225 kg (496 lb)
Dimensions and weight:
Length:
3.13 m (123.2 in) (EX)
3.14 m (123.6 in) (EX SPORT / EX DELUXE /
EX LIMITED)
Width: 1.13 m (44.5 in)
Height: 1.15 m (45.3 in)
Dry weight:
262 kg (578 lb) (EX)
265 kg (584 lb) (EX SPORT)
272 kg (600 lb) (EX DELUXE)
273 kg (602 lb) (EX LIMITED)
Performance:
Maximum output (according to ISO 8665/SAE
J1228):74.6 kW at 7300 r/min
Maximum fuel consumption: 29.2 L/h (7.7 US gal/h, 6.4 Imp.gal/h)
Cruising range at full throttle:
1.71 hour
Trolling speed: 1500 ±100 r/min
Engine:
Engine type:
Liquid cooled 4-stroke, DOHC
Number of cylinders: 3
Engine displacement: 1049 cm³
Bore × stroke:
82.0 × 66.2 mm (3.23 × 2.61 in)
Compression ratio: 11.0 : 1
Valve clearance-intake (cold): 0.15–0.22 mm (0.0059–0.0087 in)
Valve clearance-exhaust (cold):
0.26–0.32 mm (0.0102–0.0126 in)
Lubrication system: Dry sump Cooling system:
Water
Starting system: Electric
Ignition system:
T.C.I.
Spark plug (NGK): CR9EB
Spark plug gap: 0.7–0.8 mm (0.028–0.031 in)
Battery capacity:
12 V, 18 Ah
Battery type: YTX20L-BS
Charging system: Flywheel magneto
Drive unit:
Propulsion system:
Jet pump
Jet pump type: Axial flow, single stage
Impeller rotation: Counterclockwise
Jet thrust nozzle angle:
24+24 °
Fuel and oil:
Recommended fuel:Regular unleaded gasoline
Minimum octane rating (PON):
86
Minimum octane rating (RON): 90
Recommended engine oil: YAMALUBE 4W or 4-stroke motor oil
Recommended engine oil type SAE: SAE 10W-30, 10W-40, 20W-40, 20W-50
Recommended engine oil grade API: API SG, SH, SJ, SL
Fuel tank total capacity: 50 L (13.2 US gal, 11.0 Imp.gal)
Engine oil quantity with oil filter replacement:
3.4 L (3.59 US qt, 2.99 Imp.qt)
Engine oil quantity without oil filter replacement: 3.2 L (3.38 US qt, 2.82 Imp.qt)
UF3Y74E0.book Page 84 Monday, June 22, 2020 5:11 PM

Trouble recovery
86
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.
EJU44430Troubleshooting chart
Confirm the possible cause and remedy, and then refer to the applicable page.
TROUBLEPOSSIBLE CAUSE REMEDYPAGE
Engine does not
start (Starter motor
does not turn over) Engine shut-
off switch
Clip not in place Install clip
24
Fuse Burned out Have serviced by
Yamaha dealer —
Battery Run down Recharge75
Poor terminal con-
nections Tighten as required
75
Terminal corroded Clean or replace 75
Starter motor Faulty Have serviced by
Yamaha dealer —
Engine does not
start (Starter motor
turns over) Throttle lever Squeezed
Release24
Faulty Have serviced by
Yamaha dealer —
RiDE lever
(EX
DELUXE / EX
LIMITED) Squeezed
Release 24
Faulty Have serviced by
Yamaha dealer —
Fuel Fuel tank empty Refill as soon as pos-
sible 43
Stale or contaminat-
ed Have 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—
Fuel injec-
tion system Fuel pump faulty Have serviced by
Yamaha dealer —
UF3Y74E0.book Page 86 Monday, June 22, 2020 5:11 PM

Trouble recovery
87
Engine runs irregu-
larly or stallsFuel Fuel tank empty Refill as soon as pos-
sible43
Stale or contaminat-
ed Have 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—
Incorrect heat range Have serviced by Yamaha dealer —
Gap incorrect Have serviced by Yamaha dealer —
Electrical wir-
ing Loose connection Have serviced by
Yamaha dealer —
Fuel injec-
tion system Faulty or clogged in-
jectors Have serviced by
Yamaha dealer
—
Warning light or in-
dicator blinks or
comes on Fuel level
warning
Fuel tank empty Refill as soon as pos-
sible 43
Oil pressure
warning Oil pressure dropped Have serviced by
Yamaha dealer 35
Engine over-
heat warning Jet intake clogged Clean
89
Check en-
gine warning Faulty sensors Have serviced by
Yamaha dealer 36
TROUBLE POSSIBLE CAUSE REMEDY PAGE
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Trouble recovery
88
Watercraft slow or
loses powerCavitation Jet intake clogged Clean 89
Impeller damaged or
worn Have serviced by
Yamaha dealer
89
Engine over-
heat warning Engine speed reduc-
tion control activated Clean jet intake and
cool engine
35
Oil pressure
warning Engine speed reduc-
tion control activated Add oil
35
Spark plug Fouled or defective Have serviced by Yamaha dealer—
Incorrect heat range Have serviced by Yamaha dealer —
Gap incorrect Have serviced by Yamaha dealer —
Electrical wir-
ing Loose connection Have serviced by
Yamaha dealer —
Fuel Stale or contaminat- ed Have serviced by
Yamaha dealer
—
Air filter Clogged Have serviced by Yamaha dealer—
Oil buildup Have serviced by Yamaha dealer —
Throttle lever Faulty Have serviced by Yamaha dealer—
TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF3Y74E0.book Page 88 Monday, June 22, 2020 5:11 PM