engine YAMAHA VX 2021 Manual Online

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
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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
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Trouble recovery
107
EJU34625
Emergency proceduresEJU44590Cleaning the jet intake and impellerEWJ00783
Before attempting to remove weeds or de-
bris from the jet intake or impeller area,
shut the engine off and remove the clip
from the engine shut-off switch. Severe in-
jury or death could result from coming in
contact with the rotating parts of the jet
pump.
If weeds or debris gets caught in the jet intake
or impeller, cavitation can occur, causing jet
thrust to decrease even though engine speed
rises. If this condition is allowed to continue,
the engine will overheat and may seize.
NOTICE: If weeds or debris gets caught in
the jet intake, do not operate the water-
craft above trolling speed until they have
been removed.
[ECJ00654]
If there is any sign that the jet intake or impel-
ler is clogged with weeds or debris, return to
shore and check the intake and impeller. Al- ways stop the engine before beaching the
watercraft.
(1) Place a suitable clean cloth or carpeting
underneath the watercraft to protect it
from abrasions and scratches. Turn the
watercraft on its side as shown.
NOTICE: When turning the watercraft
on its side, support the bow so that
the handlebars are not bent or dam-
aged.
[ECJ02690]
(2) Remove any weeds or debris from around the jet intake, drive shaft, impel-
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Trouble recovery
108
ler, jet pump housing, and jet thrust noz-
zle.
If debris is difficult to remove, consult a
Yamaha dealer.
EJU43472Raising the reverse gate (VX /
VX DELUXE / VX CRUISER / VX
LIMITED)
If the RiDE system malfunctions and the re-
verse gate remains in the lowered position,
the watercraft will not be able to move for-
ward.
After raising the reverse gate so that the wa-
tercraft can move forward, immediately re-
turn to shore and have a Yamaha dealer
service the watercraft.
To raise the reverse gate:
(1) Stop the engine and remove the clip from
the engine shut-off switch.
(2) Enter the water and move to the rear of the watercraft.
(3) Slide the shift rod joint toward the bow, and then disconnect the shift rod joint
from the ball joint. (4) Raise the reverse gate to the forward po-
sition.
TIP:
While the shift rod is disconnected, the re-
verse gate will not move to the neutral po-
sition or reverse position even if the RiDE
lever is squeezed.
If the RiDE lever is squeezed while the shift
rod is disconnected, the watercraft will
move forward.
EJU34642Jumping the battery
If the watercraft battery has run down, the en-
gine can be started using a 12-volt booster
battery and jumper cables.
EJU34664Connecting the jumper cablesEWJ01251
To avoid battery explosion and serious
damage to the electrical system:
Do not reverse the polarity of the jumper
cables when connecting to the batter-
ies.
Do not connect the negative (–) jumper
cable to the negative (–) terminal of the
watercraft battery.
Do not touch the positive (+) jumper ca-
ble to the negative (–) jumper cable.
1Shift rod joint
2 Ball joint
1 2
1
Reverse gate
2 Forward position
1
2
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Trouble recovery
109
(1) Connect the positive (+) jumper cable tothe positive (+) battery terminals of both
batteries.
(2) Connect one end of the negative (–) jumper cable to the negative (–) battery
terminal of the booster battery.
(3) Connect the other end of the negative (–) jumper cable to an engine hanger.
(4) Start the engine, and then disconnect the jumper cables by reversing the steps
above. (See page 27 for information on
starting the engine.)
EJU34716Towing the watercraftEWJ00812
The operator of the towing boat must
keep speed to a minimum and avoid
traffic or obstacles which could be a
hazard to the operator on the water-
craft.
The towline should be long enough so
that the watercraft will not collide with
the towing boat when slowing down.
If the watercraft becomes inoperative in the
water, it can be towed to shore. To tow the watercraft:
Use a towline that is three times the com-
bined length of the towing boat and the wa-
tercraft.
(1) Securely attach the towline to the bow
eye of the watercraft being towed.
(2) Sit astride the seat and hold on to the handlebars in order to balance the water-
craft. NOTICE: The bow must be kept
up out of the water during towing, oth-
erwise water could flood the engine
compartment or water could flow
back into the engine, causing severe
engine damage.
[ECJ01331]
Tow the watercraft at 8 km/h (5 mph) or less.
NOTICE: Tow the watercraft at 8 km/h (5
mph) or less, otherwise water could flood
the engine compartment or water could
flow back into the engine, causing severe
engine damage.
[ECJ01322]
EJU36156
Submerged watercraft
If the watercraft is submerged or flooded with
water, drain the bilge water from the engine
compartment. Then, have a Yamaha dealer
service the watercraft as soon as possible.
If the watercraft was submerged:
(1) Remove the watercraft from the water and drain the water from the storage
compartments. (See page 57 for infor-
1Booster battery
2 Positive (+) jumper cable
3 Negative (–) jumper cable
4 Engine hanger
3
12
41Bow eye
1
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Trouble recovery
110
mation on draining the storage compart-
ments.)
(2) Drain the bilge water from the engine compartment. (See page 66 for informa-
tion on draining the bilge water.)
(3) Have the watercraft serviced by a Yamaha dealer as soon as possible.
NOTICE: Be sure to have a Yamaha
dealer inspect the watercraft. Other-
wise, serious engine damage could
result.
[ECJ00792]
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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
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Index
112
Jet thrust nozzle and reverse gate check (VX / VX DELUXE / VX CRUISER /
VX LIMITED).......................................... 76
Jumper cables, connecting.................... 108
L
Labels, important ....................................... 4
Labels, other .............................................. 8
Labels, warning .......................................... 5
Launching the watercraft ......................... 79
Learning to operate your watercraft ........ 78
Leaving the watercraft ............................. 81
Limitations on who may operate the watercraft.............................................. 10
Long-term storage ................................... 95
Lubrication ............................................... 95
M
Main components, location of ................. 21
Maintenance ............................................ 98
Manufactured date label ............................ 2
Model information ...................................... 3
Multifunction information center check ... 77
Multifunction information center (VX DELUXE / VX CRUISER /
VX LIMITED).......................................... 44
Multifunction information center (VX-C / VX) ............................................ 39
N
No-wake mode ........................................ 35
O
Oil pressure warning ................................ 42
Operating in weeded areas ...................... 90
Operating the watercraft .......................... 81
Operating the watercraft in reverse or neutral (VX / VX DELUXE /
VX CRUISER / VX LIMITED) ................. 84
Operating your watercraft ........................ 78
Operation buttons .................................... 45
Operation requirements ........................... 12
P
Periodic maintenance chart ..................... 99
Post-launch checks ................................. 76
Post-operation care ................................. 92
Pre-launch checks ................................... 71
Pre-operation check points ..................... 71
Pre-operation checklist ............................ 69 Primary Identification (PRI-ID) number....... 1
Pull-up cleats (VX CRUISER /
VX LIMITED) .......................................... 57
R
Raising the reverse gate (VX / VX DELUXE / VX CRUISER /
VX LIMITED) ........................................ 108
Reboarding grip ....................................... 55
Reboarding step (VX / VX DELUXE /
VX CRUISER / VX LIMITED).................. 55
Recommended equipment ...................... 14
Reverse assist .......................................... 33
RiDE lever checks (VX / VX DELUXE / VX CRUISER / VX LIMITED).................. 73
RiDE lever (VX / VX DELUXE / VX CRUISER / VX LIMITED).................. 28
Riding position ......................................... 79
Rustproofing ............................................ 96
S
Safe boating rules .................................... 18
Safety equipment check .......................... 75
Seat storage compartment ...................... 59
Seats ........................................................ 54
Setting menu screen ................................ 47
Shift indicator (VX).................................... 41
Shift system check (VX / VX DELUXE /
VX CRUISER / VX LIMITED).................. 77
Shift system (VX / VX DELUXE / VX CRUISER / VX LIMITED).................. 30
Speedometer ........................................... 39
Start switch (VX-C) ................................... 27
Starting off ............................................... 88
Starting off from a trailer .......................... 88
Starting the engine on water .................... 79
Steering system ....................................... 28
Steering system checks ........................... 72
Stern drain plug checks ........................... 76
Stern eyes ................................................ 56
Stopping the engine ................................. 80
Stopping the watercraft ........................... 84
Storage compartment checks.................. 75
Storage compartments ............................ 57
Submerged watercraft ........................... 109
Switch checks .......................................... 74
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