Page 30 of 96
Description
24
Engine compartment
6
789
12
345
1Water separator (page 29)
2Fuel tank
3Air filter case
4Battery (page 53)
5Flushing hose connector
6Electrical box
7Spark plug/Spark plug cap/Ignition coil
8Oil tank filler cap/Dipstick
9Oil tank
UF2N72E0.book Page 24 Monday, July 4, 2011 1:10 PM
Page 80 of 96

Care and storage
74
Checking the battery bands
Make sure that the battery bands are not
damaged.
To store the battery:
(1) Clean the battery case using fresh water.
(2) If the battery terminals are dirty or corrod-
ed, clean them using a wire brush.
(3) Apply Yamaha Marine Grease or
Yamaha Grease A to the battery termi-
nals.
(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.
[ECJ00102]
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.
[ECJ00261]
(3) Connect the negative (–) battery lead
(black) to the negative (–) battery termi-
nal.
(4) Connect the breather hose to the battery.
WARNING! Fire or explosion could re-
sult if the breather hose is damaged,
obstructed, or not connected proper-
ly.
[EWJ00451]
(5) Make sure that the battery is securely
held in place.
1Battery band
1Battery terminal
Recommended water-resistant grease:
Yamaha Marine Grease/Yamaha
Grease A
1
UF2N72E0.book Page 74 Monday, July 4, 2011 1:10 PM
Page 88 of 96

Trouble recovery
82
Engine runs irregu-
larly or stallsFuel Empty Refill as soon as pos-
sible44
Stale or contaminat-
edHave 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—
Spark plug
capNot connected or
looseHave serviced by
Yamaha dealer—
Cracked, torn, or
damagedHave serviced by
Yamaha dealer—
Electrical wir-
ingLoose connection Have serviced by
Yamaha dealer—
Fuel injec-
tion systemFaulty or clogged in-
jectorsHave serviced by
Yamaha dealer—
Warning light or in-
dicator blinks or
comes onFuel level Empty Refill as soon as pos-
sible44
Oil pressure
warningOil pressure dropped Have serviced by
Yamaha dealer36
Engine over-
heatedJet intake clogged Clean
84
Check engine
warningFaulty sensors Have serviced by
Yamaha dealer37 TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF2N72E0.book Page 82 Monday, July 4, 2011 1:10 PM
Page 89 of 96
Trouble recovery
83
Watercraft slow or
loses powerWatercraft
operation
mode
(VX Deluxe /
VX Cruiser)Low RPM mode acti-
vatedDeactivate Low RPM
Mode
31
Cavitation Jet intake clogged Clean 84
Impeller damaged or
wornHave serviced by
Yamaha dealer84
Engine over-
heat warningEngine speed reduc-
tion control activatedClean jet intake and
cool engine36
Oil pressure
warningEngine speed reduc-
tion control activatedAdd oil
36
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—
Spark plug
capNot connected or
looseHave serviced by
Yamaha dealer—
Electrical wir-
ingLoose connection Have serviced by
Yamaha dealer—
Fuel Stale or contaminat-
edHave serviced by
Yamaha dealer—
Air filter Clogged Have serviced by
Yamaha dealer—
Oil buildup Have serviced by
Yamaha dealer— TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF2N72E0.book Page 83 Monday, July 4, 2011 1:10 PM
Page 91 of 96

Trouble recovery
85
(2) Remove any weeds or debris from
around the jet intake, drive shaft, impel-
ler, jet pump housing, and jet thrust noz-
zle.
If debris is difficult to remove, consult a
Yamaha dealer.
EJU34641Jumping the battery
If the watercraft battery has run down, the en-
gine can be started using a 12-volt booster
battery and jumper cables.
EJU34663Connecting the jumper cables
WARNING
EWJ01250
To avoid battery explosion and serious
damage to the electrical system:
Do not reverse the polarity of the jumper
cables when connecting to the batteries.
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.
(1) Connect the positive (+) jumper cable to
the 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.)
EJU34695Replacing the fuses
If a fuse is blown, replace it with the proper
fuse.
To replace a fuse:
(1) Remove the seat. (See page 38 for seat
removal and installation procedures.)
1Negative (–) jumper cable
2Booster battery
3Positive (+) jumper cable
4Engine hanger
1Good fuse
2Blown fuse
1
43
2
2 1
UF2N72E0.book Page 85 Monday, July 4, 2011 1:10 PM
Page 92 of 96
Trouble recovery
86
(2) Loosen the cap on the electrical box and
remove it.
(3) Replace the blown fuse with the spare
fuse of the correct amperage by using the
fuse puller on the reverse side of the cap.
WARNING! Do not use fuses of a dif-
ferent amperage than recommended.
Substitution with a fuse that has an
improper rating can cause extensiveelectrical system damage and possi-
ble fire.
[EWJ00802]
(4) Securely install the cap by tightening it
until it stops.
(5) Securely install the seat in its original po-
sition.
1Electrical box
2Cap
1
2
1Spare fuse
2Fuse
3Cap
1Fuse puller
Fuse amperage:
Battery fuse:
30 A
Main relay drive fuse:
10 A
Electronic throttle valve fuse:
10 A
Security system fuse:
3 A
Main fuse:
20 A
1
32
UF2N72E0.book Page 86 Monday, July 4, 2011 1:10 PM