2019 YAMAHA FX HO CRUISER service

Instrument operation
46
start the engine again, or push the “ALARM
MUTE” button.
TIP:
If the “ALARM MUTE” button was pushed to
stop the buzzer, the buzzer will start sound-
ing again after 5 minutes.
Fuel level warning
If the amount of remaining fuel is less than
10%, the percentage display of the fuel level
meter changes to “Low”, and the buzzer
sounds intermittently.
If the fuel level warning is activated, refill the
fuel tank as soon as possible. (See page 56
for information on filling the fuel tank.)
Battery voltage warning
If the battery voltage is less than 12 volts or
more than 18 volts when the engine is notrunning, the voltage display of the voltmeter
blinks.
If the battery voltage warning is activated,
have the watercraft serviced by a Yamaha
dealer as soon as possible.
Check engine warning “ ”
If a sensor malfunction or a short circuit is de-
tected, the warning bar is shown instead of
the tachometer value display, “ ” is shown,
and the buzzer sounds intermittently.
If the check engine warning is activated, im-
mediately reduce the engine speed, return to
shore, and have a Yamaha dealer check the
engine.
TIP:
Tap “ ” to display a description of the
warning in the center display.
Engine overheat warning “ ”
If the engine temperature rises significantly,
the warning bar is shown instead of the ta-
chometer value display, “ ” and “ ” are
shown, and the buzzer sounds continuously.
1“ALARM MUTE” button
1
Low0
F13.6Vx100
RPM
MPH
0
F10.8Vx100
RPM
100%
MPH
UF3V70E0.book Page 46 Tuesday, August 28, 2018 10:16 AM

Instrument operation
47
If the engine overheat warning is activated,
immediately reduce the engine speed, return
to shore, and then make sure that water is
being discharged from the port (left) cooling
water pilot outlet while the engine is running.
If there is no discharge of water, stop the en-
gine, and then check the jet intake for clog-
ging. (See page 99 for information on the jet
intake.) NOTICE: If you cannot locate and
correct the cause of the overheating, con-
sult a Yamaha dealer. Continuing to oper-
ate at higher speeds could result in severe
engine damage.
[ECJ00042]
TIP:
While the engine overheat warning is acti-
vated, the maximum engine speed is limit-
ed.
Tap “ ” to display a description of the
warning in the center display.
Oil pressure warning “ ”
If the oil pressure drops significantly, the
warning bar is shown instead of the tachom-
eter value display, “ ” and “ ” are
shown, and the buzzer sounds intermittently.
If the oil pressure warning is activated, imme-
diately reduce the engine speed, return to
shore, and then check the engine oil level.(See page 58 for information on checking the
engine oil level.) If the oil level is sufficient,
have a Yamaha dealer check the watercraft.
TIP:
While the oil pressure warning is activated,
the maximum engine speed is limited.
Tap “ ” to display a description of the
warning in the center display.
Other warnings (communication errors,
exceeding the maintenance intervals, and
so on) “ ”
If any other malfunction is detected or if the
engine has been operated for more than 50
hours since the last maintenance, the warn-
ing bar is shown instead of the tachometer
value display, “ ” is shown, and the buzz-
er sounds intermittently.
If a warning is activated, have the watercraft
serviced by a Yamaha dealer as soon as pos-
sible.
TIP:
Tap “ ” to display a description of the
warning in the center display.
UF3V70E0.book Page 47 Tuesday, August 28, 2018 10:16 AM

Care and storage
89
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 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.
EJU44741Lubrication
To keep moving parts sliding or rotating
smoothly, lubricate them with water-resistant
grease.
Steering cable (jet thrust nozzle end), elec-
tric trim rod (jet thrust nozzle end), and ball
joint
TIP:
Disconnect the electric trim rod from the ball
joint before lubricating.
Shift rod (reverse gate end) and ball joint
TIP:
Disconnect the shift rod from the ball joint be-
fore lubricating.
EJU40812Rustproofing
Spray metallic parts of the hull, deck, and en-
gine with a rust inhibitor.
Have a Yamaha dealer rustproof the internal
engine components.
Recommended water-resistant grease:
YAMALUBE MARINE GREASE /
Ya m a h a G r e a s e A
UF3V70E0.book Page 89 Tuesday, August 28, 2018 10:16 AM

Maintenance
92
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√√94
Oil filterReplace√94
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√—
Electric trim rodCheck exterior and con-
nections, and lubricate√—
Shift rod and re-
verse gate Check exterior and con-
nections, and lubricate√—
Air filter elementCheck for damage and
dirt√—
Air intake hosesCheck for damage, and
check clamps√
—
Throttle bodyLubricate throttle valve√—
UF3V70E0.book Page 92 Tuesday, August 28, 2018 10:16 AM

Trouble recovery
96
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.
EJU45390Troubleshooting 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)Ya m a h a S e -
curity SystemLock mode selected Select unlock mode
24
Engine shut-
off switchClip not in place Install clip
25
Fuse Burned out Replace fuse and
check wiring101
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—
Throttle lever Squeezed Release 25
Faulty Have serviced by
Yamaha dealer—
RiDE lever Squeezed Release 25
Faulty Have serviced by
Yamaha dealer—
Engine does not
start (Starter motor
turns over)Fuel Fuel tank empty Refill as soon as pos-
sible56
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—
Fuel injec-
tion systemFuel pump faulty Have serviced by
Yamaha dealer—
UF3V70E0.book Page 96 Tuesday, August 28, 2018 10:16 AM

Trouble recovery
97
Engine runs irregu-
larly or stallsFuel Fuel tank empty Refill as soon as pos-
sible56
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—
Electrical wir-
ingLoose connection Have serviced by
Yamaha dealer—
Fuel injec-
tion systemFaulty or clogged in-
jectorsHave serviced by
Yamaha dealer—
Warning is dis-
playedFuel level
warningFuel tank empty Refill as soon as pos-
sible56
Oil pressure
warningOil pressure dropped Have serviced by
Yamaha dealer47
Engine over-
heat warningJet intake clogged Clean
99
Check en-
gine warningFaulty sensors Have serviced by
Yamaha dealer46 TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF3V70E0.book Page 97 Tuesday, August 28, 2018 10:16 AM

Trouble recovery
98
Watercraft slow or
loses powerWatercraft
operation
modeDrive control mode
activatedDeactivate or adjust
drive control 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 engine46
Oil pressure
warningEngine speed reduc-
tion control activatedAdd oil
47
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-
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
UF3V70E0.book Page 98 Tuesday, August 28, 2018 10:16 AM

Trouble recovery
100
ler, jet pump housing, and jet thrust noz-
zle.
If debris is difficult to remove, consult a
Yamaha dealer.
EJU43472Raising the reverse gate
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 cables
WARNING
EWJ01251
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
2Ball joint
12
1Reverse gate
2Forward position
2
1
UF3V70E0.book Page 100 Tuesday, August 28, 2018 10:16 AM