2012 YAMAHA FX HO service

Instrument operation
43
To switch to the hour meter from the voltme-
ter:
Push the “VOLT/HOUR” button for at least 1
second after the multifunction information
center is activated for more than 10 seconds.
The display switches to the hour meter from
the voltmeter.
Voltmeter
The voltmeter shows the battery voltage.
When the battery voltage is normal, the volt-
meter displays approximately 12 volts.
If the battery voltage has dropped significant-
ly, “LO” is displayed on the voltmeter. If the
battery voltage has risen significantly, “HI” is
displayed. If “LO” or “HI” is displayed, immedi-
ately return to shore and have a Yamaha
dealer service the watercraft.
To switch to the voltmeter from the hour
meter:
Push the “VOLT/HOUR” button for at least 1
second after the multifunction information
center is activated for more than 10 seconds.The display switches to the voltmeter from the
hour meter.
EJU31514Fuel level meter
The fuel level meter shows the amount of fuel
remaining in the fuel tank. The amount of re-
maining fuel is shown using eight display seg-
ments, which disappear two at a time as the
fuel level decreases.
TIP:
The accuracy of the fuel level meter varies de-
pending on the operating conditions. Use this
function as a reference only.
EJU42340Fuel level warning
If the fuel remaining in the fuel tank drops to
about 18 L (4.8 US gal, 4.0 Imp. gal), the low-
est two fuel level segments, the fuel indicator,
1“VOLT/HOUR” button
2Hour meter
21
1“VOLT/HOUR” button
2Vo l t m e t e r
1Fuel level meter
21
1
UF2T70E0.book Page 43 Thursday, December 29, 2011 2:12 PM

Care and storage
89
EJU33492
Long-term storage
WARNING
EWJ00330
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.
EJU40762Cleaning
(1) Flush the cooling water passages. (See
page 85 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 86 for in-
formation on cleaning the watercraft.)
Wax the hull with a non-abrasive wax.
EJU42540Lubrication
Use a suitable marine grease applicator and
spray a rust inhibitor between the inner and
outer cables to lubricate the cables and purge
out any dirt and moisture.
To keep moving parts sliding or rotating
smoothly, lubricate them with water-resistant
grease.
●Steering cable (jet thrust nozzle end) and
Q.S.T.S. rod (jet thrust nozzle end)
●Shift cable (shift lever end)
●Shift cable (reverse gate end)Recommended water-resistant grease:
Yamaha Marine Grease/Yamaha
Grease A
UF2T70E0.book Page 89 Thursday, December 29, 2011 2:12 PM

Maintenance
93
EJU37062Periodic 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 ques-
tions, consult a Yamaha dealer.
This “ ” mark indicates items to be checked and serviced by a Yamaha dealer.
Item OperationInitial Thereafter every
Page 10
hours50 hours100
hours200
hours
6
months12
months12
months24
months
Spark plugsCheck, clean, replace —
Lubrication pointsLubricate —
Internal engine
componentsSpray lubricant —
Intermediate hous-
ingLubricate —
Fuel systemCheck —
Fuel tankCheck, clean —
Engine idling
speedCheck, adjust —
Throttle shaftCheck —
Water inlet strain-
erCheck, clean —
Bilge strainerClean —
Electric bilge
pump strainerClean —
ImpellerCheck —
Jet thrust nozzle
angleCheck, adjust —
Steering masterCheck, adjust —
Q.S.T.S. mecha-
nismCheck, adjust —
Shift cable and re-
verse gateCheck, adjust —
Stern drain plugsCheck, replace —
BatteryCheck, charge —
Rubber couplingCheck —
Engine mountCheck —
UF2T70E0.book Page 93 Thursday, December 29, 2011 2:12 PM

Trouble recovery
96
EJU34561
Troubleshooting
If you have any trouble with your watercraft, use the troubleshooting chart to check for the pos-
sible cause.
If you cannot find the cause, consult a Yamaha dealer.
EJU42351Troubleshooting chart
Confirm the possible cause and remedy, and then refer to the applicable page.
TROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine does not
start (Starter motor
does not turn over)Yamaha Se-
curity SystemLock mode selected Select unlock mode
27
Engine shut-
off switchClip not in place Install clip
28
Fuse Burned out Replace fuse and
check wiring100
Battery Run down Recharge 86
Poor terminal con-
nectionsTighten as required
86
Terminal corroded Clean or replace 86
Starter motor Faulty Have serviced by
Yamaha dealer—
Engine does not
start (Starter motor
turns over)Throttle lever Squeezed Release 28
Fuel Fuel tank empty Refill as soon as pos-
sible55
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—
Spark plug
capNot connected or
looseHave serviced by
Yamaha dealer—
Connected to wrong
cylinderHave serviced by
Yamaha dealer—
Fuel injec-
tion systemFuel pump faulty Have serviced by
Yamaha dealer—
Throttle lever Faulty Have serviced by
Yamaha dealer—
UF2T70E0.book Page 96 Thursday, December 29, 2011 2:12 PM

Trouble recovery
97
Engine runs irregu-
larly or stallsFuel Fuel tank empty Refill as soon as pos-
sible55
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
warningFuel tank empty Refill as soon as pos-
sible55
Oil pressure
warningOil pressure dropped Have serviced by
Yamaha dealer44
Engine over-
heat warningJet intake clogged Clean
99
Check engine
warningFaulty sensors Have serviced by
Yamaha dealer45 TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF2T70E0.book Page 97 Thursday, December 29, 2011 2:12 PM

Trouble recovery
98
Watercraft slow or
loses powerShift lever Not completely shift-
ed into forward posi-
tionPush lever forward
until it stops 32
Watercraft
operation
modeLow RPM Mode acti-
vatedDeactivate Low RPM
Mode 35
Cavitation Jet intake clogged Clean 99
Impeller damaged or
wornHave serviced by
Yamaha dealer99
Engine over-
heat warningEngine speed reduc-
tion control activatedClean jet intake and
cool engine44
Oil pressure
warningEngine speed reduc-
tion control activatedAdd oil
44
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—
Throttle lever Faulty Have serviced by
Yamaha dealer— TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF2T70E0.book Page 98 Thursday, December 29, 2011 2:12 PM

Trouble recovery
102
(7) Securely install the seats in their original
positions.
If the fuse immediately blows again, the elec-
trical system may be defective. If this occurs,
have a Yamaha dealer service the watercraft.
EJU41831Replacing the bilge pump fuse
If the fuse is blown, replace it with the proper
fuse.
To replace the fuse:
(1) Remove the seats. (See page 46 for seat
removal and installation procedures.)
(2) Remove the plastic ties that are securing
the corrugated tube and bilge pump fuse
leads.
TIP:
Be careful not to drop the plastic ties into the
engine compartment.
(3) Pull out the bilge pump fuse holder from
the rubber cover, and then remove the
fuse cover.
(4) Replace the blown fuse with the spare
fuse of the correct amperage.
WARNING! Do not use fuses of a dif-
ferent amperage than recommended.
Substitution with a fuse that has an
improper rating can cause extensive
electrical system damage and possi-
ble fire.
[EWJ00802]
TIP:
If the fuse is difficult to remove, use the fuse
puller on the reverse side of the electrical box
1Good fuse
2Blown fuse
2 1
1Bilge pump fuse lead
2Plastic tie
3Corrugated tube
213
UF2T70E0.book Page 102 Thursday, December 29, 2011 2:12 PM

Trouble recovery
103
cap. (See page 100 for information on the
fuse puller.)
(5) Securely install the fuse cover, and then
fit the bilge pump fuse holder into the rub-
ber cover.
(6) Secure the bilge pump fuse leads and
corrugated tube with the plastic ties.
(7) Securely install the seats in their original
positions.If the fuse immediately blows again, the elec-
trical system may be defective. If this occurs,
have a Yamaha dealer service the watercraft.
EJU34715Towing the watercraft
WARNING
EWJ00811
●The operator of the towing boat must
keep speed to a minimum and avoid traf-
fic or obstacles which could be a hazard
to the operator on the watercraft.
●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 combined
length of the towing boat and the watercraft.
(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 en-
gine damage.
[ECJ01330]
1Bilge pump fuse holder
2Fuse cover
3Spare fuse
4Fuse
Fuse amperage:
Bilge pump fuse:
3 A
1Bilge pump fuse lead
2Plastic tie
3Corrugated tube
4Rubber cover
21
43
213
4
1Bow eye
1
UF2T70E0.book Page 103 Thursday, December 29, 2011 2:12 PM