engine overheat YAMAHA FX HO 2007 Owners Manual

Features and functions
37
EJU34980“WARNING” indicator light
The “WARNING” indicator light blinks or
comes on, together with a warning indicator,
when a malfunction has occurred.
EJU34990“UNLOCK” indicator light
The “UNLOCK” indicator light comes on when
the unlock mode of the Yamaha Security Sys-
tem is selected. The watercraft can be ridden
normally when this light is on. (See page 33
for more information.)
EJU35021Left multifunction display and operation
buttons
The left multifunction display is equipped with
the following functions.
The following operation buttons are on the left
side of the multifunction information center.
1“WARNING” indicator light
1“UNLOCK” indicator light1Fuel level meter
2Fuel level warning indicator
3Hour meter/voltmeter
4Digital speedometer
5Oil pressure warning indicator
6Exhaust temperature warning indicator
7Check engine warning indicator
8Engine overheat warning indicator
1“Speed/RPM” button
2“Volt/Hour” button
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Features and functions
40
EJU35122Oil pressure warning indicator
If the oil pressure does not rise to specifica-
tion, the “WARNING” indicator light and the oil
pressure warning indicator begin to blink, and
the buzzer sounds intermittently. At the same
time, the engine speed is limited to help pre-
vent damage.
If this occurs, reduce the engine speed, return
to shore, and then check the engine oil level.
(See page 53 for engine oil level checking
procedures.) If the oil level is low, add enough
engine oil to raise it to the proper level. If the
oil level is sufficient, have a Yamaha dealer
check the watercraft.
NOTE:
Press any button on the multifunction informa-
tion center to stop the buzzer.
EJU36401Engine overheat warning indicator
This model is equipped with an engine over-
heat warning system.
If the engine starts to overheat, the engine
overheat warning system will be activated
and, in some cases, the warning system will
cut the ignition to the engine.
If the “WARNING” indicator light and the en-
gine overheat warning indicator begin to blink,
and the buzzer sounds intermittently, immedi-ately reduce the engine speed and return to
shore.
If the “WARNING” indicator light and the en-
gine overheat warning indicator come on, and
the buzzer sounds continuously, the warning
system will cut the ignition. The engine cannot
be started until it cools down, so it may be
necessary to have the watercraft towed back
to the shore. (See “Towing the watercraft” on
page 97 for towing procedures.)
After the engine cools down, start the engine,
and then check for water discharge at the port
(left) cooling water pilot outlet while the engine
is running. If there is no discharge of water,
shut the engine off, and then check the intake
grate and impeller for clogging.
WARNING
EWJ00050
Before attempting to remove weeds or de-
bris from the intake grate or impeller, shut
the engine off and remove the clip from the
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Features and functions
41
engine shut-off switch. Severe injury or
death could result from coming in contact
with the rotating parts of the jet pump.
CAUTION:
ECJ00951
If you cannot locate and correct the cause
of the overheating, consult a Yamaha deal-
er. Continuing to operate at higher speeds
could result in severe engine damage.
NOTE:
Press any button on the multifunction informa-
tion center to stop the buzzer.
EJU36321Exhaust temperature warning indicator
This model is equipped with an exhaust tem-
perature warning system.
If the exhaust temperature becomes too hot,
the “WARNING” indicator light and the ex-haust temperature warning indicator begin to
blink, and the buzzer sounds intermittently.
If this occurs, reduce the engine speed and
return to shore to allow the exhaust system to
cool down.
CAUTION:
ECJ00960
This model is equipped with a catalytic
converter.
If the “WARNING” indicator light, exhaust
temperature warning indicator, and buzzer
come on, reduce the engine speed (below
6000 r/min), return to shore, and have a
Yamaha dealer check the watercraft.
NOTE:
Press any button on the multifunction informa-
tion center to stop the buzzer.
EJU35131Check engine warning indicator
If a sensor malfunction or a short circuit is de-
tected, the “WARNING” indicator light and the
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Operation
59
shifted from neutral to bow up or bow
down.
If the mechanism does not work properly,
have a Yamaha dealer service it.
EJU32650Jet intake
Carefully check the jet intake for weeds, de-
bris, or anything else that might restrict the in-
take of water. If the jet intake is clogged,
cavitation could occur, reducing jet thrust, and
possibly damaging the jet pump.
In some cases, the engine may overheat be-
cause of lack of cooling water, and damage to
the engine could result. Cooling water is fed to
the engine by the jet pump. (See page 94 for
jet intake cleaning procedures.)
WARNING
EWJ00470

Keep away from the intake grate while
the engine is on. Items such as long hair,
loose clothing, or PFD straps can be-come entangled in moving parts, result-
ing in severe injury or drowning.

Stop the engine and remove the clip
from the engine shut-off switch before
removing any debris or weeds, which
may have collected around the jet in-
take.
EJU32660Engine shut-off cord
Check that the engine shut-off cord is not
frayed or broken. If the cord is damaged, re-
place it; never try to repair it or tie it together.
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Operation
60
EJU32670Switches
CAUTION:
ECJ00410
Do not run the engine for more than 15
seconds when checking the switches on
land without supplying water, otherwise
the engine could overheat.
Check the start switch, the engine stop
switch, and the engine shut-off switch for
proper operation.
Push the start switch to start the engine. As
soon as the engine starts running, push the
engine stop switch to verify that the engine
stops immediately. Restart the engine, and
then pull the engine shut-off cord to remove
the clip from the engine shut-off switch to ver-
ify that the engine stops immediately. (See
pages 27 to 27 for information on proper op-
eration of the start switch, the engine stop
switch, and the engine shut-off switch.)
EJU32700Cooling water pilot outlet
Check that water comes out from the port
(left) cooling water pilot outlet while the engineis running and the watercraft is in the water.
(See page 28 for more information.)
EJU32710Multifunction information center
Check the multifunction information center for
proper operation. (See page 34 for informa-
tion on proper operation of the multifunction
information center.)
1Start switch
2Engine stop switch
3Engine shut-off switch
4Clip
5Engine shut-off cord
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Operation
62
(1) If the lock mode of the Yamaha Security
System is selected, use the remote con-
trol transmitter to select the unlock mode.
(See page 33 for Yamaha Security Sys-
tem lock and unlock mode selection pro-
cedures.)
(2) Launch the watercraft in water free from
weeds and debris and at least 60 cm (2 ft)
deep.
WARNING
EWJ00570
Never operate in water that is less than 60
cm (2 ft) deep, otherwise you increase
your chance of hitting a submerged ob-
ject, which could result in injury.
CAUTION:
ECJ00470
Never operate in water that is less than 60
cm (2 ft) deep, otherwise pebbles or sand
could be sucked into the jet intake, caus-
ing impeller damage and engine overheat-
ing.
(3) Attach the engine shut-off cord to your left
wrist, and then attach the clip to the en-
gine shut-off switch.
WARNING
EWJ00580
Check that the engine shut-off cord is not
frayed or broken, and keep it free from the
handlebars so that the engine stops if the
operator falls off. The engine shut-off cord
may not pull free if wrapped around the
handlebars when the operator falls off, al-
lowing the watercraft to continue to run
and cause an accident.
NOTE:
It is not possible to start the engine with the
clip removed from the engine shut-off switch.
1Clip
2Engine shut-off switch
3Engine shut-off cord
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Operation
66

Practice reboarding in shallow water be-
fore riding in deep water.
EJU33090Boarding and starting in shallow water
(1) Launch the watercraft in water free from
weeds and debris and at least 60 cm (2 ft)
deep.
WARNING
EWJ00640
Never operate in water that is less than 60
cm (2 ft) deep, otherwise you increase
your chance of hitting a submerged ob-
ject, which could result in injury.
CAUTION:
ECJ00500
Never operate in water that is less than 60
cm (2 ft) deep, otherwise pebbles or sand
could be sucked into the jet intake, caus-
ing impeller damage and engine overheat-
ing.
(2) Board the watercraft from the side or the
rear.
(3) Attach the engine shut-off cord to your left
wrist, and then attach the clip to the en-
gine shut-off switch.
(4) Grip the handlebars with both hands,
place both feet on the floor of the footwell,
start the engine, and then look in all direc-
tions before starting off.
EJU33110Boarding and starting from a dock
(1) Board the watercraft from the side.
(2) Attach the engine shut-off cord to your left
wrist, and then attach the clip to the en-
gine shut-off switch.
(3) Push the watercraft away from the dock,
grip the handlebars with both hands,
place both feet on the floor of the footwell,
start the engine, and then look in all direc-
tions before starting off.
EJU36080Boarding and starting in deep water
WARNING
EWJ01110

The operator and passengers should
practice boarding in shallow water be-
fore riding in deep water. Boarding in
deep water requires more skill.

The fatigue and exposure that could re-
sult after unsuccessful attempts to get
back on the watercraft may increase the
risk of injuries and drowning.
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Trouble recovery
92
EJU34560
Troubleshooting
If you have any trouble with your watercraft, use this section to check for the possible cause.
If you cannot find the cause, or if the procedure for replacement or repair is not described in
this owner’s/operator’s manual, have a Yamaha dealer perform the necessary service.
EJU36390Troubleshooting chart
TROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine does not
start (Starter motor
does not turn over)Yamaha Se-
curity SystemLock mode selected Select unlock mode
33
Engine shut-
off switchClip not in place Install clip
27
Fuse Burned out Replace the fuse and
check wiring96
Battery Run down Recharge 88
Poor terminal con-
nectionsTighten as required
88
Terminal corroded Clean 78
Starter motor Faulty Have serviced by
Yamaha dealer—
Warning sys-
temOverheat mode Cool down engine
40
Engine does not
start (Starter motor
turns over)Throttle lever Squeezed Release 27
Fuel Empty Refill as soon as pos-
sible50
Stale or contaminat-
edHave serviced by
Yamaha dealer83
Fuel tank Water or dirt present Have serviced by
Yamaha dealer83
Spark plug Fouled or defective Clean or replace 86
Spark plug
capNot connected or
looseConnect properly
86
Connected to wrong
cylinderConnect properly
86
Fuel injec-
tion systemFuel pump faulty Have serviced by
Yamaha dealer—
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Trouble recovery
94
EJU34620
Emergency procedures EJU34630Cleaning the jet intake and impeller
If weeds or debris get 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. If
there is any sign that the jet intake or impeller
is clogged with weeds or debris, return to
shore and check the intake and impeller. Al-
ways stop the engine before beaching the wa-
tercraft.
WARNING
EWJ00780
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 incontact with the rotating parts of the jet
pump.
CAUTION:
ECJ00650
If weeds or debris get caught in the jet in-
take, do not operate the watercraft above
trolling speed until they have been re-
moved.
(1) Turn the watercraft on its side as shown.
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Index
A
Air filter element, checking ....................... 84
Analog speedometer/tachometer ............. 35
Analog speedometer/tachometer and
indicator lights ....................................... 35
B
Battery ................................................ 55, 78
Battery, checking...................................... 88
Battery, jumping ....................................... 95
Beaching the watercraft ........................... 72
Beverage holder ....................................... 47
Bilge ......................................................... 54
Boarding alone ......................................... 67
Boarding and starting from a dock ........... 66
Boarding and starting in deep water ........ 66
Boarding and starting in shallow water .... 66
Boarding with passengers ........................ 67
Bow down................................................. 31
Bow eye ................................................... 32
Bow up ..................................................... 31
Builder’s plate............................................. 2
C
Capsized watercraft ................................. 69
Check engine warning indicator ............... 41
Cleaning the watercraft ............................ 78
Cooling water pilot outlet .......................... 60
Cooling water pilot outlets ........................ 28
Cruising limitations ................................... 11
D
Digital speedometer ................................. 38
Docking the watercraft ............................. 72
E
Emergency procedures ............................ 94
Engine break-in ........................................ 61
Engine compartment ................................ 53
Engine oil ................................................. 50
Engine oil and oil filter .............................. 83
Engine oil level ......................................... 53
Engine overheat warning indicator ........... 40
Engine serial number ................................. 1
Engine shut-off cord ................................. 59
Engine shut-off switch .............................. 27
Engine stop switch ................................... 27
Enjoy your watercraft responsibly ............ 19
Exhaust temperature warning indicator.... 41F
Filling the fuel tank ................................... 50
Fire extinguisher ....................................... 56
Flushing the cooling system ..................... 76
Front storage compartment ...................... 45
Fuel and oil............................................... 49
Fuel injection system ................................ 90
Fuel level .................................................. 53
Fuel level meter ........................................ 38
Fuel level warning indicator ...................... 39
Fuel system .............................................. 77
Fuel system, checking .............................. 83
Fuel tank .................................................. 83
Fuel tank filler cap .................................... 26
Fuses, replacing ....................................... 96
G
Gasohol .................................................... 49
Gasoline ................................................... 49
Getting to know your watercraft ............... 64
Glove compartment .................................. 46
H
Handgrip ................................................... 32
Hazard information ................................... 15
Hood ......................................................... 25
Hour meter/voltmeter ............................... 39
Hull and deck ........................................... 53
Hull Identification Number (HIN)................. 1
I
Identification numbers ................................ 1
Important labels .......................................... 3
J
Jet intake .................................................. 59
Jet intake and impeller, cleaning .............. 94
Jet thrust nozzle angle, checking ............. 85
Jumper cables, connecting ...................... 95
L
Labels, other .............................................. 8
Labels, warning .......................................... 4
Launching the watercraft .......................... 61
Learning to operate your watercraft ......... 64
Leaving the watercraft .............................. 63
Left multifunction display and
operation buttons .................................. 37
Limitations on who may operate
the watercraft ........................................ 10
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