lock YAMAHA YFZ450 2005 User Guide

6-25
EBU14270
Parking on a slope
WARNING
_ Avoid parking on hills or other inclines. Park-
ing on a hill or other incline could cause the
ATV to roll out of control, increasing the
chance of an accident. If you must park on an
incline, put the machine in low gear, apply the
parking brake, and block the front and rear
wheels with rocks or other objects.
Do not park the ATV at all on hills that are so
steep you could not walk up them easily. _1. Bring the machine to a stop by applying the
front brake.
2. With the front and rear brake applied, pull the
clutch lever, shift into the neutral position,
and then apply the parking brake.
3. Stop the engine by setting the engine stop
switch to “OFF”.
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7-17 1. Locknut 2. Adjusting screw
1. Contre-écrou 2. Vis de réglage
1. Contratuerca 2. Tornillo de ajuste
Speed limiter
For riders inexperienced with this model, this mod-
el is equipped with a speed limiter in the throttle le-
ver housing. The speed limiter limits the power
and top speed of the ATV. Turning the adjusting
screw in decreases the top speed, and turning it
out increases the top speed. (See page 4-13 for
details.)
Loading and accessories
As originally equipped, this ATV is not designed to
carry cargo or tow a trailer. If you choose to add
accessories so that you can carry cargo or tow a
trailer, you must use common sense and good
judgment.
Use extra caution when riding the ATV with addi-
tional loads, such as accessories or cargo. The
ATV’s handling may be adversely affected. Re-
duce your speed when adding additional loads.
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7-55
WARNING
_ Use proper gear and maintain steady speed
when climbing a hill.
If you lose all forward speed:

Keep weight uphill.


Apply the brakes.


Lock the parking brake, after you are
stopped.
If you begin rolling backwards:


Keep weight uphill.


Never apply the rear brake while rolling
backwards. Apply the front brake.
When fully stopped, apply the rear brake
as well, and then lock the parking brake.
Dismount on uphill side or to a side if pointed
straight uphill. Turn the ATV around and re-
mount, following the procedure described in
the Owner’s Manual.
_
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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.
_
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8-55 1. Bolt
1. Boulon
1. Perno
1. Spark plug cap
1. Capuchon de bougie
1. Tapa de bujía
4. Pull the panel backward, and then remove it.
5. Install the fuel tank cap by turning it clock-
wise.
6. Remove the bolt, lift the rear of the fuel tank,
and then tilt it back.
WARNING
_ Before lifting the fuel tank, make sure that the
fuel cock is in the “OFF” position and the fuel
tank cap is securely tightened. Otherwise, fuel
may leak out of the carburetor or fuel tank. _7. Remove the spark plug cap.
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8-61
NOTE:_ If a torque wrench is not available when you are in-
stalling a spark plug, a good estimate of the correct
torque is 1/4 to 1/2 turn past finger tight. Have the
spark plug tightened to the specified torque as
soon as possible. _4. Install the spark plug cap.CAUTION:_ Do not use any tools to remove or install the
spark plug cap, otherwise the ignition coil cou-
pler may be damaged. The spark plug cap may
be difficult to remove because 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 out; to install it, twist it back
and forth while pushing it in. _5. Place the fuel tank in the original position,
and then install the bolt.
6. Remove the fuel tank cap by turning it coun-
terclockwise.
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8-63 1. Projection (× 4) 2. Slot (× 4)
1. Saillie (× 4) 2. Fente (× 4)
1. Saliente (× 4) 2. Ranura (× 4)
7. Place the panel in the original position.
8. Install the fuel tank cap by turning it clock-
wise.
9. Install the bolts and the quick fastener
screws.
10. Install the seat.
U5TG61.book Page 63 Friday, April 2, 2004 11:28 AM

8-77 1. Locknut 2. Adjusting bolt
a. Throttle lever free play
1. Contre-écrou 2. Boulon de réglage
a. Jeu du levier d’accélération
1. Contratuerca 2. Perno de ajuste
a. Juego libre de la palanca del acelerador
EBU03070
Throttle lever adjustmentNOTE:_ Adjust the engine idling speed before adjusting the
throttle lever free play. _1. Loosen the locknut.
2. Turn the adjusting bolt until the throttle lever
free play is 2–4 mm.
3. Tighten the locknut.
U5TG61.book Page 77 Friday, April 2, 2004 11:28 AM

8-85 1. Brake fluid reservoir cover 2. Bolt (× 2)
1. Cache du réservoir de liquide de frein
2. Boulon (× 2)
1. Cubierta del depósito de líquido de frenos
2. Perno (× 2)
Observe these precautions:

When checking the brake fluid level, make sure
the top of the brake fluid reservoir is level.


Use only the designated quality brake fluid, oth-
erwise, the rubber seals may deteriorate, caus-
ing leakage and poor brake performance.


Refill with the same type of brake fluid. Mixing
fluids may result in a harmful chemical reaction
and lead to poor brake performance.


Be careful that water does not enter the brake
fluid reservoir when refilling. Water will signifi-
cantly lower the boiling point of the fluid and
may result in vapor lock.


Brake fluid may deteriorate painted surfaces or
plastic parts. Always clean up spilled fluid im-
mediately.


Have a Yamaha dealer check the cause if the
brake fluid level goes down. Recommended brake fluid: DOT 4
U5TG61.book Page 85 Friday, April 2, 2004 11:28 AM

8-93 1. Locknut 2. Adjusting bolt
A. Cable length
1. Contre-écrou 2. Boulon de réglage
A. Longueur de câble
1. Contratuerca 2. Perno de ajuste
A. Longitud del cable
1. Locknut 2. Adjusting nut
1. Contre-écrou 2.Écrou de réglage
1. Contratuerca 2. Tuerca de ajuste
EBU14160
Parking brake adjustment
Parking brake adjustment may be required if the
parking brake does not hold properly. The cable
length
A should be adjusted to 56–60 mm.
1. Loosen the locknut and the adjusting nut on
the brake cable below the fuel tank.
2. Fully loosen the locknut and the adjusting bolt
at the rear brake caliper.
3. Turn the adjusting nut on the brake cable in
direction
a to increase the cable length or in
direction
b to decrease the cable length.NOTE:_ If the cable cannot be adjusted to specification,
consult a Yamaha dealer. _4. Tighten the locknut on the brake cable.
U5TG61.book Page 93 Friday, April 2, 2004 11:28 AM