2003 YAMAHA FX sensor

2-2
E
1Fuel tank filler cap
2Stern eye
Use to attach rope for transporting or mooring.
3Intake grate
Prevents debris from getting into the jet pump.
4Reverse gate
Controls direction of jet thrust when in reverse.
5Ride plate
6Jet thrust nozzle
Changes the direction of jet thrust according
to handlebar position.
7Speed sensor8Stern drain plugs
Use to drain water in the bilge when the water-
craft is on dry land.
9Cleat
Use to attach a towrope for pulling water-skier,
or a rope for mooring the watercraft.
0Handgrip
Use for suppor t when boarding the watercraft
or when seated facing rearward and acting as
a spotter for a water-skier.
AElectric bilge pilot outlet
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2-17
E
EJU01790
Hour meter/Voltmeter
NOTE:@ To switch the display between the hour
meter and voltmeter, push the hour meter/
voltmeter display select switch 1 for at least
2 seconds.
Hour meter
The hour meter is provided to make it
easy to follow the maintenance schedule.
The meter shows the hours of engine
operation that have elapsed since the water-
craft was new.
Vo l t m e t e r
The voltmeter is provided to display the
voltage of the battery.
The voltmeter displays 12 volts or more
when the battery voltage is within specifica-
tion.
If the voltage displayed is low, beach the
watercraft and, if necessary, have a Yamaha
dealer check the charging system.
EJU01791
Check engine warning indicator
If a sensor malfunction or a short circuit is
detected, the warning indicator begins to
blink and the buzzer sounds intermittently.
If this occurs, reduce the engine speed,
beach the watercraft, and have a Yamaha
dealer check the engine.
UF1B71.book Page 17 Tuesday, November 12, 2002 4:17 PM

5-2
E
Engine runs irregu-
larly or stallsFuel Empty Refill as soon as possi-
ble3-4
Stale or contaminated Have serviced by
Yamaha dealer4-10
Fuel tank Water or dirt present Have serviced by
Yamaha dealer4-10
Spark plug Fouled or defective Replace 4-16
Incorrect heat range Replace 4-16
Gap incorrect Adjust 4-16
Spark plug cap Loose Connect properly 4-16
Cracked, torn, or dam-
agedReplace
—
Electrical wir-
ingLoose connection Tighten or connect
properly—
Fuel injection
systemJet nozzle clogged Have serviced by
Yamaha dealer—
Warning light or
indicator blinksFuel level Empty Refill as soon as possi-
ble3-4
Engine over-
heatedJet intake clogged Clean
5-3
Check engine
warningFaulty sensors Have serviced by
Yamaha dealer—
Wate rcr af t slow or
loses powerCavitation Jet intake clogged Clean 5-3
Impeller damaged or
wornHave serviced by
Yamaha dealer—
Engine over-
heat warningEngine speed reduc-
tion control activatedClean jet intake and
cool engine2-19
Oil pressure
warningEngine speed reduc-
tion control activatedAdd oil
2-18
Spark plug Fouled or defective Replace 4-16
Incorrect heat range Replace 4-16
Gap incorrect Adjust 4-16
Spark plug
capsLoose Connect properly
4-16
Electrical wir-
ingLoose connection Tighten or connect
properly—
Fuel Stale or contaminated Have serviced by
Yamaha dealer4-10
Air filter Clogged Clean or replace 4-13
Oil buildup Replace 4-13 TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF1B71.book Page 2 Tuesday, November 12, 2002 4:17 PM