2005 YAMAHA YFZ450 stop start

3-1
EBU00320
1-DESCRIPTION AND MACHINE
IDENTIFICATION1. Seat
2. Fuel tank cap
3. Radiator cap
4. Oil filter element
5. Brake pedal
6. Headlights
7. Fuel cock
8. Starter (choke)
9. Throttle stop screw
10. Fuse11. Tail/brake light
12. Coolant reservoir
13. Shift pedal
14. Engine oil tank
15. Clutch lever
16. Handlebar switches
17. Parking brake lever
18. Main switch
19. Throttle lever
20. Brake leverNOTE:_ The machine you have purchased may differ
slightly from those shown in the figures of this
manual. _
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3-2
3
FBU00320
DESCRIPTION ET
IDENTIFICATION DU VÉHICULE
1. Selle
2. Bouchon du réservoir de
carburant
3. Bouchon de radiateur
4.Élément du filtre à huile
5. Pédale de frein
6. Phares
7. Robinet de carburant
8. Starter (enrichisseur)
9. Vis d’arrêt de l’accélérateur
10. Fusible11. Feu arrière/stop
12. Vase d’expansion
13. Pédale de sélection
14. Réservoir d’huile de moteur
15. Levier d’embrayage
16. Contacteurs au guidon
17. Levier de frein de
stationnement
18. Contacteur à clé
19. Levier d’accélération
20. Levier de freinN.B.:_ Les illustrations de ce manuel peuvent légèrement diffé-
rer du modèle réel. _
SBU00320
DESCRIPCION E IDENTIFICACION
DE LA MAQUINA1. Asiento
2. Tapón del depósito de
combustible
3. Tapa del radiador
4. Filtro de aceite
5. Pedal del freno
6. Faros
7. Grifo de combustible
8. Starter (choke)
9. Tornillo de tope del
acelerador
10. Fusible11. Luz de freno/piloto trasero
12. Depósito de refrigerante
13. Pedal de cambios
14. Depósito de aceite de
motor
15. Palanca de embrague
16. Interruptores del manillar
17. Palanca del freno de
estacionamiento
18. Interruptor principal
19. Palanca de aceleración
20. Palanca del frenoNOTA:_ La máquina que ha adquirido puede diferir ligera-
mente de la representada en las figuras de este ma-
nual. _
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4-7 1. Light switch “LIGHTS”
2. Engine stop switch “ENG. STOP”
3. Start switch “START”
1. Contacteur d’éclairage “LIGHTS”
2. Coupe-circuit du moteur “ENG. STOP”
3. Contacteur du démarreur “START”
1. Interruptor de luces “LIGHTS”
2. Interruptor de parada del motor “ENG. STOP”
3. Interruptor de arranque “START”
EBU00530
Handlebar switches
EBU13741
Light switch “LIGHTS”
Set the switch to the “LO” position to turn on the
low beam and the taillight.
Set the switch to the “HI” position to turn on the
high beam and the taillight.
Set the switch to the “OFF” position to turn off all
the lights.NOTE:_ The headlights and the taillight can be turned on
only when the engine is started. _
EBU06470
Start switch “START”
The starter motor cranks the engine when this
switch is pushed.CAUTION:_ See the starting instructions on page 6-3 prior
to starting the engine. _
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4-9 1. Light switch “LIGHTS”
2. Engine stop switch “ENG. STOP”
3. Start switch “START”
1. Contacteur d’éclairage “LIGHTS”
2. Coupe-circuit du moteur “ENG. STOP”
3. Contacteur du démarreur “START”
1. Interruptor de luces “LIGHTS”
2. Interruptor de parada del motor “ENG. STOP”
3. Interruptor de arranque “START”
EBU11580
Engine stop switch “ENG. STOP”
Make sure that the engine stop switch is in the
“RUN” position before starting the engine. The en-
gine stop switch controls ignition and can be used
at all times to stop the engine, especially in an
emergency. The engine will not start or run when
the engine stop switch is turned to “OFF”.
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6-3
EBU14120
Starting a cold engine
WARNING
_ Always make sure all control cables work
smoothly before you begin riding in cold
weather. If the control cables are frozen or do
not work smoothly, you could be unable to
control the ATV, which could lead to an acci-
dent or collision. _1. Apply the parking brake.
2. Turn the fuel cock to “ON”.
3. Turn the main switch to “ON” and the engine
stop switch to “RUN”.
4. Shift the transmission into neutral.
U5TG61.book Page 3 Friday, April 2, 2004 11:28 AM

6-11 1. Shift pedal N. Neutral position
1. Pédale de sélection N. Point mort
1. Pedal de cambios N. Posición de punto muerto
EBU01981
Shifting
This model has a 5-speed forward transmission.
The transmission allows you to control the amount
of power you have available at a given speed or for
starting, accelerating, climbing hills, etc. To shift
into neutral, return the throttle lever to its original
position, apply the clutch and repeatedly depress
the shift pedal until it stops. When it stops, it will be
in first gear. Raise the pedal slightly to neutral.CAUTION:_

Do not coast for long periods with the en-
gine off, and do not tow the machine a long
distance. Even in neutral position, the
transmission is only properly lubricated
when the engine is running. Inadequate lu-
brication may cause damage.


Always use the clutch when changing
gears. The engine, transmission and drive
train are not designed to withstand the
shock of forced shifting and can be dam-
aged by shifting without the clutch.
_
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7-53
If your ATV has stalled or stopped and you believe
you can continue up the hill, restart carefully to
make sure you do not lift the front wheels which
could cause you to lose control. If you are unable
to continue up the hill, dismount the ATV on the
uphill side. Physically turn the ATV around and
then descend the hill.
If you start to roll backwards, DO NOT use the rear
brake to stop or try to put the ATV in gear. The
ATV could easily tip over backwards. Instead, ap-
ply the front brake gradually, or dismount the ATV
immediately on the uphill side.
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7-75
WHAT TO DO IF ...
This section is designed to be a reference guide
only. Be sure to read each section on riding tech-
niques completely.
WHAT TO DO ...

If your ATV doesn’t turn when you want it to:
Bring the ATV to a stop and practice the turning
maneuvers again. Be sure you are putting your
weight on the footboard to the outside of the
turn. Position your weight over the front wheels
for better control. (See pages 7-41–7-45.)


If your ATV begins to tip while turning:
Lean more into the turn to regain balance. If
necessary, gradually let off the throttle and/or
steer to the outside of the turn. (See pages
7-41–7-45.)


If your ATV starts to slide sideways:
Steer in the direction of the slide if you have the
room. Applying the brakes or accelerating is
not recommended until you have corrected the
slide. (See pages 7-71–7-73.)
U5TG61.book Page 75 Friday, April 2, 2004 11:28 AM