cooling YAMAHA VX 2020 User Guide

Care and storage
82
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 removable watertight
storage compartment and seats in their
original positions.
EJU43840Cleaning the watercraft
(1) Remove the seats. (See page 43 for seat
removal and installation procedures.)
(2) If the watercraft will be stored for a week
or more, rustproof the internal enginecomponents to help prevent corrosion.
(See page 85 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 55 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 seats 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 seats.
(11) Securely install the seats in their original
positions.
EJU33688Battery 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.
WARNING
EWJ00792
Battery electrolyte is poisonous and dan-
gerous, causing severe burns, etc. Elec-
trolyte contains sulfuric acid. Avoid
contact with skin, eyes, or clothing.
Antidotes
UF4G74E0.book Page 82 Tuesday, July 16, 2019 10:27 AM

Care and storage
85
EJU33493
Long-term storage
WARNING
EWJ00331
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 81 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 82 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.
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.
EJU44140Rustproofing
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 43 for seat
removal and installation procedures.)
(2) Release the hooks on the port side of the
air filter case, and then lift up the air filter
case cover. NOTICE: Do not lift up the
air filter case cover forcefully. Other- Recommended water-resistant grease:
YAMALUBE MARINE GREASE /
Ya m a h a G r e a s e A
UF4G74E0.book Page 85 Tuesday, July 16, 2019 10:27 AM

Maintenance
88
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 hours50 hours
or 12
months
*1100
hours or
12
months
*1200
hours or
24
months
*1
Fuel lineCheck fuel hoses and
clamps√—
Fuel filler cap/Wa-
ter separatorCheck O-rings for cracks
and deformation√—
Fuel tankCheck installation and
straps√—
Water inlet strainerCheck for clogs and dam-
age√—
Cooling water hos-
esCheck for damage and
leakage, and check
clamps√—
Engine oilReplace√√90
Oil filterReplace√90
Intermediate hous-
ingLubricate√—
Spark plugsCheck√√—
BatteryCheck state of charge,
terminals, bands, and
breather hose√—
Battery leadsCheck terminals√—
Steering masterCheck operation and for
looseness√√—
Steering cableCheck 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 elementCheck for damage and
dirt√—
Air intake hosesCheck for damage, and
check clamps√—
UF4G74E0.book Page 88 Tuesday, July 16, 2019 10:27 AM

Specifications
91
EJU45440
Specifications
Watercraft capacity:
Maximum people on board:
3 person
Maximum load capacity:
240 kg (530 lb)
Dimensions and weight:
Length:
3340 mm (131.5 in) (VX-C)
3350 mm (131.9 in) (VX, VX Deluxe,
VX Cruiser, VX Limited)
Width:
1220 mm (48.0 in)
Height:
1190 mm (46.9 in)
Dry weight:
314 kg (692 lb) (VX-C)
321 kg (708 lb) (VX)
301 kg (664 lb) (VX Deluxe)
303 kg (668 lb) (VX Cruiser / VX Limited)
Performance:
Maximum output (according to ISO 8665/SAE
J1228):
85.0 kW at 8000 r/min
Maximum fuel consumption:
33.5 L/h (8.8 US gal/h, 7.4 Imp.gal/h)
Cruising range at full throttle:
2.09 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 sumpCooling 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, 19 Ah
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:
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)
UF4G74E0.book Page 91 Tuesday, July 16, 2019 10:27 AM

99
Index
A
After removing the watercraft from the
water ..................................................... 80
B
Battery care.............................................. 82
Battery checks ......................................... 61
Battery, jumping ....................................... 96
Beaching and docking the watercraft ...... 78
Bilge water check..................................... 61
Bilge water, draining ................................ 55
Bilge water, draining on land ................... 55
Bilge water, draining on water ................. 55
Boarding alone ......................................... 75
Boarding and starting off from a dock ..... 78
Boarding the watercraft ........................... 74
Boarding with passenger(s) ..................... 75
Bow eye ................................................... 45
Bow storage compartment ...................... 46
Builder’s plate ............................................ 3
C
Capsized watercraft ................................. 78
Check engine warning ............................. 41
Cleaning ................................................... 85
Cleaning the watercraft ............................ 82
Cleat ......................................................... 45
Cooling water pilot outlet ......................... 29
Cooling water pilot outlet check .............. 66
Craft Identification Number (CIN)............... 1
Cruise assist (VX Deluxe / VX Cruiser /
VX Limited)............................................ 36
Cruising limitations................................... 11
E
Emergency procedures ............................ 95
Engine break-in ........................................ 57
Engine compartment check ..................... 60
Engine idling speed check ....................... 67
Engine oil ................................................. 53
Engine oil and oil filter .............................. 90
Engine oil level check............................... 61
Engine oil requirements ........................... 53
Engine overheat warning ......................... 40
Engine serial number ................................. 2
Engine shut-off cord (lanyard) check ....... 63
Engine shut-off switch ............................. 27
Engine stop switch................................... 27Engine unit check ..................................... 61
Enjoy your watercraft responsibly ............ 19
Equipment ................................................ 43
F
Fire extinguisher check ............................ 65
Fire extinguisher holder and cover........... 48
Fire extinguisher holder, cover, and
band checks ......................................... 64
Flushing the cooling water passages....... 81
Fuel .......................................................... 50
Fuel level check........................................ 60
Fuel level meter ........................................ 39
Fuel level warning..................................... 40
Fuel requirements .................................... 50
Fuel system checks ................................. 60
G
Getting to know your watercraft .............. 68
Glossary, watercraft ................................. 20
Glove compartment ................................. 47
H
Handgrip .................................................. 44
Hazard information................................... 15
Hood check .............................................. 66
Hour meter ............................................... 41
Hull and deck check ................................ 65
I
Identification numbers ............................... 1
Information display................................... 38
J
Jet intake and impeller, cleaning.............. 95
Jet intake checks ..................................... 65
Jet thrust nozzle and reverse gate check
(VX / VX Deluxe / VX Cruiser /
VX Limited) ............................................ 65
Jumper cables, connecting ...................... 96
L
Labels, important ....................................... 4
Labels, other .............................................. 8
Labels, warning .......................................... 5
Launching the watercraft ......................... 69
Learning to operate your watercraft......... 68
Leaving the watercraft.............................. 70
Limitations on who may operate the
watercraft .............................................. 10
Long-term storage ................................... 85
UF4G74E0.book Page 99 Tuesday, July 16, 2019 10:27 AM