2021 YAMAHA VX fuel

Pre-operation checks
69
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.
71
Fuel system Check the fuel system for leakage.
Check the fuel level in the fuel tank.
71
Water separator Check the water separator for water. 71
Engine unit Check the exterior of the engine unit for damage. 72
Engine oil level Check the engine oil level. 72
Bilge water Check the engine compartment for bilge water. 72
Battery Check the battery connections. 72
Steering system Check the steering system for proper operation. 72
RiDE lever (VX /
VX DELUXE /
VX CRUISER / VX LIMITED) Check the RiDE lever for proper operation.
73
Throttle lever Check the throttle lever for proper operation. 73
Yamaha Security System
(VX DELUXE /
VX CRUISER / VX LIMITED) Check the Yamaha Security System for proper op-
eration.
73
Engine shut-off cord (lan-
yard) Check the engine shut-off cord (lanyard) for dam-
age.
73
Switches VX-C:
Check the start switch, engine stop switch, and en-
gine shut-off switch for proper operation.
VX / VX DELUXE / VX CRUISER / VX LIMITED:
Check the engine start/stop switch and engine
shut-off switch for proper operation.
74
Storage compartments Check the storage compartments for damage and
water.
75
Fire extinguisher holder,
cover, and band Check the fire extinguisher holder, cover, and band
for damage.
75
Fire extinguisher Check the condition of the fire extinguisher. 75
Safety equipment Check that safety equipment meeting the applica-
ble regulations is on board.
75
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Pre-operation checks
71
EJU32282
Pre-operation check pointsEJU40099Pre-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 seat storagecompartment. (See page 54 for seat re-
moval and installation procedures and
page 59 for information on the seat stor-
age compartment.)
(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 seat storage compartment and
seats in their original positions.
EJU32334Engine compartment checkEWJ00462
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 checksEWJ00382
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 62 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
water separator, drain it. (See page 29 for in-
formation on draining the water separator.)
1Water separator
1
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Care and storage
92
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.
EJU46370Flushing 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 seats. (See page 54 for seat removal and installation procedures.) (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
95
(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 92 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 93 for in-formation on cleaning the watercraft.)
Wax the hull with a non-abrasive wax.
EJU43663Lubrication
To keep moving parts sliding or rotating
smoothly, lubricate them with water-resistant
grease.
Recommended water-resistant grease:
YAMALUBE MARINE
GREASE/Yamaha Grease A
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
96
Steering cable (jet thrust nozzle end)
VX / VX DELUXE / VX CRUISER / VX
LIMITED: Shift rod (reverse gate end) and ball joint
TIP:
Disconnect the shift rod from the ball joint be-
fore lubricating.
EJU46360Rustproofing
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 seats. (See page 54 for seat removal and installation procedures.)
(2) Remove the plastic tie that is fastening the fuel hose to the holder on the star-
board side of the air filter case. (3) Release the hooks on the port side of the
air 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.
1Hook
2 Air filter case cover
3 Fuel hose
4 Plastic tie
5 Holder
1 Intake opening
2
1 3
4
5
1
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Care and storage
97
(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 27 for in-
formation on starting the engine.)
(8) Stop the engine.
(9) Securely install the seats in their original positions.
UF4N70E0.book Page 97 Tuesday, October 6, 2020 5:13 PM

Maintenance
99
EJU43102Periodic 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 √√ 101
Oil filter Replace √101
Intermediate hous-
ing Lubricate
√—
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 rod and re-
verse gate (VX /
VX DELUXE /
VX CRUISER / VX
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
√
—
Throttle body Lubricate throttle valve √—
UF4N70E0.book Page 99 Tuesday, October 6, 2020 5:13 PM

Specifications
102
EJU46450
Specifications
Watercraft capacity:
Maximum people on board:3 person
Maximum load capacity: 240 kg (530 lb)
Dimensions and weight:
Length:
3.33 m (131.1 in) (VX-C)
3.37 m (132.7 in) (VX LIMITED, VX CRUISER,
VX DELUXE, VX)
Width: 1.24 m (48.8 in)
Height: 1.20 m (47.2 in)
Dry weight:
306 kg (675 lb) (VX DELUXE)
308 kg (679 lb) (VX CRUISER)
314 kg (692 lb) (VX DELUXE with audio)
316 kg (697 lb) (VX LIMITED, VX CRUISER
with audio)
318 kg (701 lb) (VX-C)
326 kg (719 lb) (VX)
Performance:
Maximum output (according to ISO 8665/SAE
J1228):74.6 kW at 7300 r/min (VX-C)
85.0 kW at 8000 r/min (VX LIMITED,
VX CRUISER, VX DELUXE, VX)
Maximum fuel consumption:
29.1 L/h (7.7 US gal/h, 6.4 Imp.gal/h) (VX-C)
33.0 L/h (8.7 US gal/h, 7.3 Imp.gal/h) (VX
LIMITED, VX CRUISER, VX DELUXE, VX)
Cruising range at full throttle: 2.12 hour (VX LIMITED, VX CRUISER,
VX DELUXE, VX)
2.41 hour (VX-C)
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
UF4N70E0.book Page 102 Tuesday, October 6, 2020 5:13 PM