fuel YAMAHA VX 2021 Owner's Manual

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
UF4N70E0.book Page 96 Tuesday, October 6, 2020 5:13 PM

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

Specifications
103
Recommended engine oil grade API:API SG, SH, SJ, SL
Fuel tank total capacity: 70 L (18.5 US gal, 15.4 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)
Engine oil total quantity: 3.7 L (3.91 US qt, 3.26 Imp.qt)
UF4N70E0.book Page 103 Tuesday, October 6, 2020 5:13 PM

Trouble recovery
104
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.
EJU46272Troubleshooting 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)
Yamaha Secu- rity System
(VX DELUXE /
VX CRUISER /
VX LIMITED)Lock mode selected Select unlock mode
25
Engine shut-
off switch Clip not in place Install clip
26
Fuse Burned out Have serviced by Yamaha dealer—
Battery Run down Recharge93
Poor terminal con-
nections Tighten as required
93
Terminal corroded Clean or replace 93
Starter motor Faulty Have serviced by
Yamaha dealer —
Engine does not
start (Starter motor
turns over) Throttle lever Squeezed
Release27
RiDE lever
(VX /
VX DELUXE /
VX CRUISER /
VX LIMITED)SqueezedRelease
27
Fuel Fuel tank empty Refill as soon as pos-
sible 62
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 —
UF4N70E0.book Page 104 Tuesday, October 6, 2020 5:13 PM

Trouble recovery
105
Engine runs irregu-
larly or stallsFuel Fuel tank empty Refill as soon as pos-
sible62
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 (VX-C /
VX) Fuel level
warning
Fuel tank empty Refill as soon as pos-
sible 62
Oil pressure
warning Oil pressure dropped Have serviced by
Yamaha dealer 42
Engine over-
heat warning Jet intake clogged Clean
107
Check en-
gine warning Faulty sensors Have serviced by
Yamaha dealer 43
Warning is dis-
played
(VX DELUXE /
VX CRUISER / VX
LIMITED) Fuel level
warning
Fuel tank empty Refill as soon as pos-
sible 62
Oil pressure
warning Oil pressure dropped Have serviced by
Yamaha dealer 51
Engine over-
heat warning Jet intake clogged Clean
107
Check en-
gine warning Faulty sensors Have serviced by
Yamaha dealer 50
TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF4N70E0.book Page 105 Tuesday, October 6, 2020 5:13 PM

Trouble recovery
106
Watercraft slow or
loses powerWatercraft op-
eration mode
(VX DELUXE /
VX CRUISER /
VX LIMITED)Drive control mode
activatedDeactivate or adjust
drive control mode
36
Cavitation Jet intake clogged Clean 107
Impeller damaged or
worn Have serviced by
Yamaha dealer
107
Engine over-
heat warning Engine speed reduc-
tion control activated Clean jet intake and
cool engine
43, 50
Oil pressure
warning Engine speed reduc-
tion control activated Add oil
42, 51
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 —
Audio system does
not activate
(equipped models) Fuse Burned out
Have serviced by
Yamaha dealer —
TROUBLE
POSSIBLE CAUSE REMEDYPAGE
UF4N70E0.book Page 106 Tuesday, October 6, 2020 5:13 PM

111
Index
A
Accessory outlet ...................................... 52
After removing the watercraft from the water ..................................................... 91
Audio control............................................ 52
Audio system (equipped models) ............ 52
B
Battery care.............................................. 93
Battery checks ......................................... 72
Battery, jumping..................................... 108
Beaching and docking the watercraft ...... 90
Bilge water check..................................... 72
Bilge water, draining ................................ 66
Bilge water, draining on land ................... 66
Bilge water, draining on water ................. 66
Boarding alone ......................................... 86
Boarding and starting off from a dock ..... 89
Boarding the watercraft ........................... 86
Boarding with passenger(s) ..................... 87
Bow eye ................................................... 56
Bow storage compartment ...................... 57
Builder’s plate ............................................ 3
C
Capsized watercraft ................................. 89
Check engine warning ............................. 43
Cleaning ................................................... 95
Cleaning the watercraft ............................ 93
Cleat ......................................................... 57
Cooling water pilot outlet ......................... 28
Cooling water pilot outlet check .............. 77
Craft Identification Number (CIN)............... 1
Cruise assist............................................. 37
Cruising limitations................................... 11
D
Display ..................................................... 45
Drive control mode................................... 36
Drive control mode screen ....................... 47
E
Emergency procedures .......................... 107
Engine break-in ........................................ 68
Engine compartment check ..................... 71
Engine idling speed check ....................... 77
Engine lock screen ................................... 49
Engine oil ................................................. 64
Engine oil and oil filter ............................ 101 Engine oil level check ............................... 72
Engine oil requirements ........................... 64
Engine overheat warning.......................... 43
Engine serial number ................................. 2
Engine shut-off cord (lanyard) check ....... 73
Engine shut-off switch ............................. 26
Engine start/stop switch (VX /
VX DELUXE / VX CRUISER /
VX LIMITED) .......................................... 26
Engine stop switch (VX-C)........................ 26
Engine unit check ..................................... 72
Enjoy your watercraft responsibly ............ 19
Equipment ................................................ 54
F
Fire extinguisher check ............................ 75
Fire extinguisher holder and cover........... 60
Fire extinguisher holder, cover, and band checks ......................................... 75
Flushing the cooling water passages....... 92
Fuel .......................................................... 62
Fuel level check........................................ 71
Fuel level meter ........................................ 42
Fuel level warning..................................... 42
Fuel requirements .................................... 62
Fuel system checks ................................. 71
G
Getting to know your watercraft .............. 78
Glossary, watercraft ................................. 20
Glove compartment ................................. 58
H
Handgrip .................................................. 55
Hazard information................................... 15
Home screen ............................................ 46
Hood check .............................................. 76
Hour meter and voltmeter ........................ 41
Hull and deck check ................................ 75
I
Identification numbers ............................... 1
Information display................................... 39
Information screen ................................... 47
J
Jet intake and impeller, cleaning............ 107
Jet intake checks ..................................... 75
UF4N70E0.book Page 111 Tuesday, October 6, 2020 5:13 PM