2007 YAMAHA FX HO CRUISER engine

Maintenance and care
84
CAUTION:
ECJ00190
If oil is leaking or the oil pressure warning
indicator comes on when the engine is
running, immediately shut the engine off
and have a Yamaha dealer check the wa-
tercraft. Continuing to operate the engine
under such conditions could cause severe
engine damage.
EJU34300Checking the air filter element
The air filter element should be checked every
12 months or every 100 hours of operation.
To check the air filter element:
(1) Remove the seats. (See page 24 for seat
removal and installation procedures.)
(2) Remove the air filter case cover screws,
slide the locks open, and then remove the
air filter case cover.
(3) Remove the air filter element and check it
for dirt and oil. Replace the air filter ele-ment if there is any oil buildup, or every 2
years or every 200 hours of operation.
(4) Install the air filter element in the air filter
case, and then install the air filter case
cover.
(5) Install the seats.
CAUTION:
ECJ00200

Make sure that the air filter element is in-
stalled in the air filter case properly.

Do not start the engine with the air filter
element removed, otherwise the pistons
and cylinders could be damaged.

If cleaning the air filter element, use cold
or lukewarm water and let it air dry com-
pletely. Do not use detergent or solvent
to clean the air filter element, or dry it
with hot or compressed air, otherwise it
could be damaged.
1Air filter case cover screw
2Lock
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Maintenance and care
86
EJU34381Cleaning and adjusting the spark
plugs
The spark plug is an important engine compo-
nent and is easy to inspect. The condition of
the spark plug can indicate something about
the condition of the engine. For example, if
one spark plug has a distinctly different color,
the engine could require servicing. Do not at-
tempt to diagnose any problems yourself.
Have a Yamaha dealer service the watercraft.
Remove and inspect the spark plugs periodi-
cally; heat and deposits will cause the spark
plugs to slowly break down and erode. If elec-
trode erosion becomes excessive, or if carbon
and other deposits are excessive, replace the
spark plug with the specified plug.
To remove a spark plug:
(1) Remove the air filter case cover and air
filter element. (See page 84 for air filter
element removal and installation proce-
dures.)
(2) Remove the spark plug cap.
CAUTION:
ECJ00210
Do not use any tools to remove or install
the spark plug cap, otherwise the ignition
coil coupler could be damaged. The spark
plug cap may be difficult to remove be-
cause the rubber seal on the end of the
cap fits tightly. To remove the spark plug
cap, simply twist it back and forth while
pulling it up; to install it, twist it back and
forth while pushing it down.
(3) Remove the spark plug.
Measure the spark plug gap with a wire
thickness gauge. Replace the spark plugor adjust the gap to specification if neces-
sary.
To install a spark plug:
(1) Clean the gasket surface.
(2) Wipe any dirt from the threads of the
spark plug.
(3) Install the spark plug, and then tighten it
to the specified torque.
(4) Install the spark plug cap.
NOTE:

Wipe off any water on the spark plug or in-
side the spark plug cap before installing the
cap. Push the spark plug cap down until it is
securely installed.

If a torque wrench is not available when you
are installing a spark plug, a good estimate
of the correct torque is 1/4 turn to 1/2 turn
past finger tight using the spark plug
wrench included in the tool kit. Have the
spark plug adjusted to the correct torque
with a torque wrench as soon as possible.
Specified spark plug:
CR9EB
1Spark plug gap
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Spark plug tightening torque:
12.5 Nm (9.2 ft-lb) (1.27 kgf-m)
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Maintenance and care
90
To install the battery:
(1) Place the battery in the battery compart-
ment and connect the battery leads to the
battery terminals.
(2) Connect the breather hose to the battery.
(3) Secure the battery in place.
WARNING
EWJ00400
Be sure to connect the breather hose to
the battery. Fire or explosion could result
if the breather hose is damaged, obstruct-
ed, or not connected properly.
CAUTION:
ECJ00260
After installation, make sure that the bat-
tery leads are properly connected to the
battery terminals.
EJU34490Fuel injection system
The fuel injection system was set at the
Yamaha factory. If the fuel injection system
needs to be adjusted, have a Yamaha dealer
service the watercraft.
CAUTION:
ECJ00220
Do not attempt to adjust the fuel injection
system. If the settings are disturbed by
someone who does not have the neces-sary technical knowledge, poor engine
performance and damage may result.
EJU34500Checking the trolling speed
(1) Place the watercraft in the water.
(2) Start the engine and warm it up. Use the
tachometer in the multifunction informa-
tion center to check the trolling speed.
If the trolling speed is out of specification,
have a Yamaha dealer service the watercraft.
1Positive (+) battery terminal: Red lead
2Negative (–) battery terminal: Black lead
3Breather hose
Trolling speed:
1650 ±50 r/min
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Specifications
91
EJU34542
Specifications
Watercraft capacity:
Maximum people on board:
3 person
Maximum load capacity:
240 kg (530 lb)
Dimensions:
Length:
3340 mm (131.5 in)
Width:
1230 mm (48.4 in)
Height:
FX High Output 1160 mm (45.7 in)
FX Cruiser High Output 1240 mm (48.8 in)
Dry weight:
FX High Output 378 kg (833 lb)
FX Cruiser High Output 383 kg (844 lb)
Performance:
Maximum output (according to ISO 8665/SAE
J1228):
104.50 kW@10000 r/min
Maximum fuel consumption:
45.0 L/h (11.9 US gal/h) (9.9 Imp.gal/h)
Cruising range at full throttle:
1.56 hour
Trolling speed:
1650 ±50 r/min
Engine:
Engine type:
Liquid cooled 4-stroke, DOHC
Number of cylinders:
4
Engine displacement:
1052 cm³
Bore & stroke:
76.0 × 58.0 mm (2.99 × 2.28 in)
Compression ratio:
11.9 : 1
Valve clearance-intake (cold):
0.11–0.20 mm (0.0043–0.0079 in)
Valve clearance-exhaust (cold):
0.25–0.34 mm (0.0098–0.0134 in)
Lubrication system:
Dry sump
Cooling system:
Water
Starting system:
ElectricIgnition system:
T.C.I.
Spark plug:
CR9EB
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Battery capacity:
12 V, 19.0 Ah
Charging system:
Flywheel magneto
Drive unit:
Propulsion system:
Jet pump
Jet pump type:
Axial flow, single stage
Impeller rotation:
Counterclockwise
Jet thrust nozzle angle:
24.0+24.0 °
Jet thrust nozzle trim angle:
-10, -5, 0, 5, 10 °
Fuel and oil:
Recommended fuel:
Regular unleaded gasoline
Minimum octane rating (PON):
86
Minimum octane rating (RON):
90
Recommended oil:
SAE 10W-30
Oil grade:
API SE,SF,SG,SH,SJ,SL
Fuel tank total capacity:
70 L (18.5 US gal) (15.4 Imp.gal)
Engine oil quantity with oil filter replacement:
2.3 L (2.43 US qt) (2.02 Imp.qt)
Engine oil quantity without oil filter replacement:
2.1 L (2.22 US qt) (1.85 Imp.qt)
Engine oil total quantity:
4.5 L (4.76 US qt) (3.96 Imp.qt)
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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—
UF1X71E0.book Page 92 Tuesday, September 26, 2006 9:52 AM

Trouble recovery
93
Engine runs irregu-
larly or stallsFuel 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 Replace 86
Incorrect heat range Replace 86
Gap incorrect Adjust 86
Spark plug
capLoose Connect properly 86
Cracked, torn, or
damagedReplace
—
Electrical wir-
ingLoose connection Tighten or connect
properly—
Fuel injec-
tion systemFaulty or clogged in-
jectorsHave serviced by
Yamaha dealer—
Warning light or in-
dicator blinksFuel level Empty Refill as soon as pos-
sible50
Engine over-
heatedJet intake clogged Clean
94
Exhaust gas
temperatureGas temperature is
too highCool down engine
41
Check engine
warningFaulty sensors Have serviced by
Yamaha dealer41
Watercraft slow or
loses powerCavitation Jet intake clogged Clean 94
Impeller damaged or
wornHave serviced by
Yamaha dealer94
Engine over-
heat warningEngine speed reduc-
tion control activatedClean jet intake and
cool engine40
Oil pressure
warningEngine speed reduc-
tion control activatedAdd oil
40
Spark plug Fouled or defective Replace 86
Incorrect heat range Replace 86
Gap incorrect Adjust 86
Spark plug
capsLoose Connect properly
86
Electrical wir-
ingLoose connection Tighten or connect
properly—
Fuel Stale or contaminat-
edHave serviced by
Yamaha dealer83
Air filter Clogged Clean or replace 84
Oil buildup Replace 84 TROUBLE POSSIBLE CAUSE REMEDY PAGE
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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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Trouble recovery
95
CAUTION:
ECJ00660

Place a suitable clean cloth or carpeting
underneath the watercraft to protect it
from abrasions and scratches.

Always turn the watercraft over onto its
port (left) side.

When turning the watercraft on its side,
support the bow so that the handlebars
are not bent or damaged.
(2) Remove any weeds or debris from
around the drive shaft, impeller, jet pump
housing, and jet thrust nozzle.
If debris is difficult to remove, consult a
Yamaha dealer.
CAUTION:
ECJ00670
Always avoid operating your watercraft in
areas where weed growth is thick. If travel-
ing in weeded areas is unavoidable, oper-
ate the engine alternately at partial throttle
and full throttle. Weeds tend to accumu-
late more at a steady speed and at trolling
speed. If weeds clog the jet intake or im-
peller area and cause cavitation, follow the
cleaning procedure above.
EJU34640Jumping the battery
If the watercraft battery has run down, the en-
gine can be started using a 12-volt booster
battery and jumper cables.
WARNING
EWJ00790
Battery electrolyte is poisonous and dan-
gerous, causing severe burns, etc. Elec-
trolyte contains sulfuric acid. Avoid
contact with skin, eyes, or clothing.
Antidotes
External: Flush with water.
Internal: Drink large quantities of water or
milk. Follow with milk of magnesia, beatenegg, or vegetable oil. Call a physician im-
mediately.
Eyes: Flush with water for 15 minutes and
get prompt medical attention.
Batteries produce explosive gases. Keep
sparks, flames, cigarettes, etc., well away.
If using or charging the battery in an en-
closed space, make sure that it is well ven-
tilated. Always shield your eyes when
working near batteries.
KEEP OUT OF THE REACH OF CHILDREN.
EJU34660Connecting the jumper cables
(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.
CAUTION:
ECJ00680
Do not connect the end of the negative (–)
jumper cable to the negative (–) battery
terminal of the watercraft battery! Make
sure that all connections are secure and
correct before attempting to start the en-
1Positive (+) jumper cable
2Negative (–) jumper cable
3Booster battery
4Engine hanger
UF1X71E0.book Page 95 Tuesday, September 26, 2006 9:52 AM