Page 33 of 152
2-4
E
1Air filter case
2Water separator
3Fuel tank
4Battery
5Flush hose connector
Use to flush the engine cooling water pas-
sages.
6Electrical box
Protects electrical components from water.
7Oil tank8Muffler
9Spark plugs/Spark plug caps/Ignition coils
E_F1X-70.book Page 4 Friday, August 26, 2005 11:00 AM
Page 37 of 152

2-8
E
EJU22360
Remote control transmitter
The Yamaha Security System and low-
RPM mode settings are selected using the
remote control transmitter. (See “Yamaha
Security System/Low-RPM mode” on page
2-20 for information on using the remote
control transmitter.)
CAUTION:@ The Yamaha Security System and low-
RPM mode settings can only be selected
using the remote control transmitter.
Observe the following precautions to
protect your remote control transmitter:
Store the remote control transmitter
carefully so it will not be lost. When
operating the watercraft, use the trans-
mitter holder 1 in the watertight com-
partment. If you accidentally lose your
remote control transmitter, contact a
Yamaha dealer.
While the remote control transmitter
has been designed for use in wet envi-
ronments, it should not be operated
underwater or submerged for an
extended length of time. If it gets wet,
dry it with a soft, dry cloth.
Keep the remote control transmitter
away from high temperatures and do
not place it in direct sunlight.
Do not drop the remote control trans-
mitter, subject it to strong shocks, or
place any heavy items on it.
Use a soft, dry cloth to clean the trans-
mitter. Do not use detergent, alcohol,
or other chemicals.
If the remote control transmitter needs
a new battery or is not operating prop-
erly, contact a Yamaha dealer. Do not
attempt to replace the battery yourself.
@
E_F1X-70.book Page 8 Friday, August 26, 2005 11:00 AM
Page 52 of 152

2-23
E
CAUTION:@ If the remote control transmitter does not
operate when its buttons are pressed,
the battery may be low. Have a Yamaha
dealer replace the battery.
@
EJU22240
Multifunction meter
The multifunction meter is equipped with
the following three main components for
help and convenience in operating the
watercraft.
1
Analog speedometer/tachometer and indicator
lights
2
Left multifunction display and operation but-
tons
3
Right multifunction display and operation but-
tons (for FX Cruiser High Output)
CAUTION:@ Do not run the engine for more than 15
seconds when checking the operation of
the meter on land. The engine could
overheat.
@
NOTE:@ When the multifunction meter starts oper-
ating, the analog speedometer/tachome-
ter makes one sweep, all displays light up
for 2 seconds, and then the meter starts
to operate normally.
The multifunction meter will continue to
operate for 25 seconds after the engine
stops.
@
E_F1X-70.book Page 23 Friday, August 26, 2005 11:00 AM
Page 57 of 152

2-28
E
EJU17890
Fuel meter
The fuel meter is provided for convenient
fuel level checking while riding. The fuel
meter has eight segments which show the
amount of fuel remaining in the fuel tank.
NOTE:@ The fuel level is most accurate when the
watercraft is sitting level on a trailer or in the
water.
@
EJU22050
Hour meter/Voltmeter
NOTE:@ To switch the display between the hour
meter and voltmeter, push the “Vo l t / H o u r”
button 1 for at least 1 second after the
meter is displayed for more than 10 sec-
onds.
@
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.
When the battery voltage is normal, the
voltmeter displays approximately 12 volts.
If the battery voltage is less than 8.0 volts,
“LO” is displayed on the voltmeter and if the
voltage is above 18.1 volts, “HI” is displayed
on the voltmeter. If “HI” or “LO” is displayed,
return to shore and, if necessary, have a
Yamaha dealer check the charging system
and the battery.
E_F1X-70.book Page 28 Friday, August 26, 2005 11:00 AM
Page 74 of 152

3-5
E
EJU13460
Pre-operation checks
EJU13470
Pre-operation check list
Before operating this watercraft, perform the checks in the following check list. See the
accompanying text in this chapter for details on how to perform the checks.
WARNING@ If any item in the pre-operation check list is not working properly, have it inspected
and repaired before operating the watercraft, otherwise an accident could occur.
@
NOTE:@ Pre-operation checks should be made thoroughly each time the watercraft is used. This pro-
cedure can be completed in a short time. It is worth the time spent to assure safety and reli-
ability.
@
ITEM ROUTINE PAGE
Engine compartment Remove all seats to ventilate the engine compartment.
Check for fuel vapors and loose electrical connections.3-6
Bilge Check for water and fuel and remove if necessary. 3-9
Stern drain plugs Check for proper installation. 3-10
Throttle lever Check that the throttle lever springs back smoothly. 3-12
Steering system Check for proper operation.
Check that the handlebars are securely locked.3-12
Shift lever and reverse gate Check for proper operation. 3-13
QSTS Check for proper operation. 3-14
Fuel and oil Check fuel and oil levels and add if necessary.
Check the hoses and tanks for leakage.3-6, 3-7
Water separator Check for water and drain if necessary. 3-8
Battery Check electrolyte level and battery condition. 3-10
Hood Check that the hood is properly secured. 2-7
Front and rear seats Check that the seats are properly secured. 2-5, 2-6
Hull and deck Check the hull and deck for cracks or other damage. 3-6
Jet unit Check for debris and remove if necessary. 3-15
Fire extinguisher Check condition and replace if necessary. 3-11
Engine shut-off cord Check condition and replace if frayed or broken. 3-15
Switches Check the start switch, engine stop switch, and engine
shut-off switch for proper operation.3-16
Cooling water pilot outlet Check that water is discharged while the engine is run-
ning and the watercraft is in the water.3-16
Multifunction meter Check for warning indications and proper operation. 3-16
E_F1X-70.book Page 5 Friday, August 26, 2005 11:00 AM
Page 79 of 152

3-10
E
EJU20581
Stern drain plug
Check the stern drain plugs for proper
installation.
CAUTION:@ Make sure that the stern drain plugs
are tightened securely before launch-
ing the watercraft. Otherwise, water
may flood the engine compartment
and cause the watercraft to submerge.
Clean any foreign materials, such as
dirt or sand, from the drain plug
threads before installing the drain
plugs. Otherwise, the drain plugs may
be damaged and water may enter the
engine compartment.
@
EJU19690
Battery
Check the battery condition and the elec-
trolyte level.
Check that the battery leads are tightened
securely and there is no corrosion on the
battery terminals.
WARNING@ The battery must always be fully
charged and in good condition. Loss
of battery power may leave you
stranded. Never operate the watercraft
if the battery does not have sufficient
power to start the engine or if it shows
any other signs of decreased power.
Be sure to connect the breather hose
to the battery. Fire or explosion could
result if the breather hose is damaged,
obstructed, or not connected properly.
@
Make sure that the battery is securely
held in place.
1
Positive (+): Red lead
2
Negative (–): Black lead
3
Breather hose
E_F1X-70.book Page 10 Friday, August 26, 2005 11:00 AM
Page 89 of 152

3-20
E
3. Attach the clip 1 to the engine shut-off
switch 2 and attach the engine shut-off
cord 3 to your left wrist.
WARNING@ Check that the engine shut-off cord is not
frayed or broken, and keep it free from
the handlebars so 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, allowing 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.
@
4. Push the start switch (green button), and
then release it as soon as the engine
starts to run.
NOTE:@ The engine will not start if the throttle lever is
squeezed.
@
CAUTION:@ Never push the start switch while the
engine is running.
Do not operate the start switch for
more than 5 seconds, otherwise the
battery will be discharged and the
engine will not start. Also, the starter
motor may be damaged. If the engine
does not start in 5 seconds, release
the start switch, wait 15 seconds, and
then try again.
@
E_F1X-70.book Page 20 Friday, August 26, 2005 11:00 AM
Page 109 of 152

E
4
EJU10860
MAINTENANCE AND
CARE
Storage ...................................................... 4-1
Flushing the cooling system .................. 4-1
Lubrication .............................................. 4-3
Fuel system ............................................ 4-4
Battery .................................................... 4-5
Cleaning the watercraft .......................... 4-6
Maintenance and adjustments .............. 4-7
Owner’s/Operator’s Manual and
tool kit ..................................................... 4-9
Periodic maintenance chart ................. 4-10
Inspecting the fuel system ................... 4-11
Changing the engine oil ....................... 4-12
Checking the air filter element ............. 4-14
Inspecting the jet thrust
nozzle angle ......................................... 4-15
Inspecting the shift cable ..................... 4-15
Inspecting and adjusting the
throttle cable ......................................... 4-15
Cleaning and adjusting the
spark plugs ........................................... 4-16
Lubrication points ................................. 4-18
Inspecting the battery .......................... 4-21
Adjusting the fuel injection system ...... 4-23
Replacing the fuse ............................... 4-24
Specifications ........................................ 4-25
E_F1X-70.book Page 1 Friday, August 26, 2005 11:00 AM