2005 YAMAHA YFZ450 warning light

EBU00150
1-CONTENTS
LOCATION OF THE WARNING
AND SPECIFICATION LABELS .............. 1-1
SAFETY INFORMATION ......................... 2-1
DESCRIPTION AND MACHINE
IDENTIFICATION .................................... 3-1
Identification number records ............... 3-3
Key identification number ..................... 3-5
Vehicle identification number ............... 3-5
Model label ........................................... 3-7
CONTROL FUNCTIONS ......................... 4-1
Main switch........................................... 4-1
Indicator and warning lights.................. 4-3
Handlebar switches .............................. 4-7
Throttle lever ...................................... 4-11
Speed limiter ...................................... 4-13
Clutch lever ........................................ 4-15
Brake lever ......................................... 4-17
Brake pedal ........................................ 4-17
Parking brake lever ............................ 4-19
Shift pedal .......................................... 4-21
Fuel tank cap ...................................... 4-21
1234
Fuel cock............................................ 4-23
Starter (choke) .................................. 4-25
Seat.................................................... 4-27
Front shock absorber adjustment ...... 4-29
Rear shock absorber adjustment ....... 4-39
PRE-OPERATION CHECKS ................... 5-1
Front and rear brakes .......................... 5-5
Fuel ...................................................... 5-9
Engine oil ........................................... 5-13
Coolant............................................... 5-15
Chain.................................................. 5-17
Throttle lever ...................................... 5-17
Fittings and fasteners......................... 5-19
Lights ................................................. 5-19
Switches............................................. 5-19
Tires ................................................... 5-21
How to measure tire pressure ............ 5-25
Tire wear limit..................................... 5-27
5
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2-17
WARNING
_

Always turn off the engine when refueling.


Do not refuel immediately after the engine
has been running and is still very hot.


Do not spill gasoline on the engine or ex-
haust pipe/muffler when refueling. Never
refuel while smoking or in the vicinity of
sparks, open flames, or other sources of
ignition such as the pilot lights of water
heaters and clothes dryers. Gasoline can
catch fire. You could be burned.


When transporting the machine in another
vehicle, be sure it is kept upright and that
the fuel cock is in the “OFF” position. Oth-
erwise, fuel may leak out of the carburetor
or fuel tank.


Gasoline is poisonous. If you should swal-
low some gasoline or inhale a lot of gaso-
line vapor, or get some gasoline in your
eyes, see your doctor immediately. If gaso-
line spills on your skin, wash with soap
and water. If gasoline spills on your cloth-
ing, change your clothes.
_
U5TG61.book Page 17 Friday, April 2, 2004 11:28 AM

4-3 1. Neutral indicator light “N”
2. Coolant temperature warning light “”
1. Témoin de point mort “N”
2. Témoin d’avertissement de la température du liquide de
refroidissement “”
1. Luz de control de punto muerto “N”
2. Luz de aviso de la temperatura del refrigerante “”
EBU08020
Indicator and warning lights
EBU06030
Neutral indicator light “N”
This indicator light comes on when the transmis-
sion is in neutral.
EBU13850
Coolant temperature warning light “”
When the coolant temperature reaches a specified
level, this light comes on to warn that the coolant
temperature is too hot. If the light comes on during
operation, stop the engine as soon as it is safe to
do so and allow the engine to cool down for about
10 minutes.
The electrical circuit of the warning light can be
checked according to the following procedures.
1. Set the engine stop switch to “RUN” and turn
the key to “ON”.
2. Shift the transmission into the neutral position
or pull the clutch lever.
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4-5
3. Push the start switch. If the warning light
does not come on while the start switch is
pushed, have a Yamaha dealer check the
electrical circuit.CAUTION:_

The engine may overheat if the ATV is
overloaded. If this happens, reduce the
load to specification.


Restart after making sure that the light is
off. Continuous use while the light is on
may cause damage to the engine.
_
U5TG61.book Page 5 Friday, April 2, 2004 11:28 AM

8-53 1. Panel 2. Bolt (× 2)
3. Quick fastener screw (× 2) 4. Fuel tank cap
1. Cache 2. Boulon (× 2)
3. Vis à serrage rapide (× 2)
4. Bouchon du réservoir de carburant
1. Panel 2. Perno (× 2)
3. Perno del fijador rápido (× 2)
4. Tapón del depósito de combustible
EBU14142
Spark plug inspection
Removal
1. Remove the seat. (See page 4-27 for seat re-
moval and installation procedures.)
2. Remove the bolts and the quick fastener
screws.
3. Remove the fuel tank cap by turning it coun-
terclockwise.
WARNING
_

Always turn off the engine when removing
the fuel tank cap.


Do not remove the fuel tank cap immedi-
ately after the engine has been running
and is still very hot.


Do not spill gasoline on the engine, ex-
haust pipe or muffler.


Never remove the fuel tank cap while
smoking, or in the vicinity of sparks, open
flames, or other sources of ignition such
as the pilot lights of water heaters and
clothes dryers.
_
U5TG61.book Page 53 Friday, April 2, 2004 11:28 AM

8-135 1. Headlight bulb holder
1. Fixation d’ampoule de phare
1. Portabombillas del faro
1. Do not touch the glass part of the bulb.
1. Ne pas toucher le verre de l’ampoule.
1. Ne tocar la parte de cristal de la bombilla.
4. Push the headlight bulb holder in and turn it
counterclockwise to remove.
5. Remove the defective bulb and replace it with
a new bulb.
WARNING
_ Do not touch a headlight bulb when it is on or
immediately after it is turned off. You can be
burned or a fire could start if the bulb touches
something flammable. Wait for the bulb to cool
before touching or removing it. _CAUTION:_ Do not touch the glass part of the headlight
bulb to keep it free from oil, otherwise the
transparency of the glass, the luminosity of the
bulb, and the bulb life will be adversely affect-
ed. Thoroughly clean off any dirt and finger-
prints on the headlight bulb using a cloth
moistened with alcohol or thinner. _
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8-145
WARNING
_ Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe in-
jury or property damage. Make sure there are
no open flames or sparks in the area, including
pilot lights from water heaters or furnaces. _
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10-5
Wheel travel:
Front
Rear230.0 mm
256.0 mm
Electrical:
Ignition system
Generator system
Battery type/voltage capacityDC-C.D.I.
A.C. magneto
GT7B-4/12 V, 6.5 Ah
Headlight type: Krypton bulb
Bulb voltage, wattage
× quantity:
Headlight
Tail/brake light
Indicator/warning lights:
Neutral
Coolant temperature12 V, 30 W/30.0 W
× 2
12 V, 5 W/21.0 W
× 1
12 V, 1.7 W
× 1
12 V, 1.7 W
× 1
Fuse: 15.0 AMODEL YFZ450
U5TG61.book Page 5 Friday, April 2, 2004 11:28 AM