2006 YAMAHA YFZ450 wheel

Carburetor adjustment ...................... 8-75
Idle speed adjustment ...................... 8-77
Valve clearance adjustment ............. 8-77
Throttle lever adjustment .................. 8-79
Front brake pad inspection ............... 8-81
Rear brake pad inspection ............... 8-83
Brake fluid level inspection ............... 8-85
Brake fluid replacement .................... 8-91
Front brake lever free play ............... 8-93
Brake pedal height adjustment ......... 8-95
Parking brake adjustment ................. 8-97
Adjusting the rear brake light switch.... 8-101
Clutch lever free play adjustment .... 8-103
Drive chain slack check .................. 8-105
Adjusting the drive chain slack ....... 8-107
Lubricating the drive chain ............. 8-111
Cable inspection and lubrication .... 8-115
Brake pedal, brake lever and
clutch lever lubrication .................. 8-117
Front upper and lower arm pivot
lubrication ..................................... 8-121Rear arm pivot lubrication .............. 8-123
Wheel removal ............................... 8-125
Wheel installation ........................... 8-127
Battery ............................................ 8-129
Battery maintenance ...................... 8-133
Fuse replacement ........................... 8-135
Replacing a headlight bulb ............. 8-137
Headlight beam adjustment ............ 8-143
Tail/brake light ................................ 8-143
Troubleshooting .............................. 8-145
Troubleshooting chart ..................... 8-149
CLEANING AND STORAGE ................ 9-1
A. CLEANING ..................................... 9-1
B. STORAGE ..................................... 9-7
SPECIFICATIONS .............................. 10-1
Conversion table ................................. 11-1
9
10
11
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2-5
8Never operate at speeds too fast for your
skills or the conditions. Always go at a speed
that is proper for the terrain, visibility, operat-
ing conditions, and your experience.
8Never attempt wheelies, jumps, or other
stunts.
8Always inspect your ATV each time you use it
to make sure it is in safe operating condition.
Always follow the inspection and maintenance
procedures and schedules described in this
manual.
8Always keep both hands on the handlebars
and both feet on the footrests of the ATV dur-
ing operation.
8Always go slowly and be extra careful when
operating on unfamiliar terrain. Always be
alert to changing terrain conditions when
operating the ATV.
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5-1
EBU01130
PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
Front brake9Check operation lever, free play, fluid level and fluid leakage. 5-7–5-11, 8-81,
9Fill with DOT 4 brake fluid if necessary. 8-85–8-91
Rear brake9Check operation, fluid level and fluid leakage. 5-7–5-11
9Fill with DOT 4 brake fluid if necessary. 8-83–8-89, 8-93
Clutch9Check operation, condition and lever free play. 8-103
Parking brake9Check operation, condition and cable length. 8-97–8-99
Fuel 9Check fuel level.
9Fill with fuel if necessary.5-13–5-15
Engine oil9Check oil level.
9Fill with oil if necessary.5-17, 8-25–8-41
Coolant reservoir 9Check coolant level in reservoir.
9Fill with coolant if necessary.5-19–5-21, 8-43–8-53
Drive chain9Check chain slack and condition.
9Adjust if necessary.5-21, 8-105–8-113
Throttle9Check for proper throttle cable operation and free play. 5-21, 8-79
Wheels and tires9Check tire pressure, wear and damage. 5-23–5-29, 8-125–8-127
Fittings and fasteners9Check all fittings and fasteners. 5-29
Lights and switches9Check for proper operation. 5-29, 8-99, 8-137–8-141
5TG-9-62 5-6 5/13/05 1:45 PM Page 5-1

6-15
6. Shift into second gear (be careful not to
shift into neutral).
7. Open the throttle part way and gradually
release the clutch lever.
8. Follow the same procedure when shifting
to the next higher gear.
w
Opening the throttle abruptly or releasing the
clutch lever too quickly would increase the
chance of an accident or could make the
machine wheelie including overturn. Always
open the throttle gradually and release the
clutch lever gradually.
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6-17
EBU02080
To decelerate:
When slowing down or stopping, release the
throttle and apply the brakes smoothly and
evenly. As you slow down, shift to a lower gear.
Be sure that the engine has sufficiently slowed
before engaging a lower gear. Improper use of
the brakes or shifting can cause the tires to lose
traction, reducing control and increasing the
possibility of an accident.
w
Make sure the engine has sufficiently slowed
before shifting to a lower gear. Engaging a
lower gear when the engine speed is too
high could make the wheels stop rotating.
This could cause loss of control, an accident
and injury. It could also cause engine or
drive train damage.
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6-25
EBU14270
Parking on a slope
w
Avoid parking on hills or other inclines.
Parking 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 posi-
tion, and then apply the parking brake.
3. Stop the engine by setting the engine stop
switch to “OFF”.
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7-21
During operation
Always keep your feet on the footboards during
operation. Otherwise your feet may contact the
rear wheels.
w
Always keep both hands on the handlebars
and both feet on the footboards of your ATV
during operation. Removing even one hand
or foot can reduce your ability to control the
ATV or could cause you to lose your balance
and fall off of the ATV. If you remove a foot
from a footboard, your foot or leg may come
into contact with the rear wheels, which
could injure you or cause an accident.
Avoid wheelies and jumping. You may lose con-
trol of the ATV or overturn.
w
Never attempt stunts, such as wheelies or
jumps. Don’t try to show off.
5TG-9-62 7 5/12/05 4:28 PM Page 164

7-37
With the engine idling, pull the clutch lever to
disengage the clutch and shift into 1st gear, and
then release the parking brake. Open the throttle
gradually, and at the same time, release the
clutch lever slowly. Once the ATV has attained
adequate speed, release the throttle lever and at
the same time, quickly pull in the clutch lever
and shift into 2nd gear. Open the throttle part
way and gradually release the clutch. Use this
same procedure as you move into the higher
gears. Be sure to coordinate the use of the throt-
tle and shift pedal properly. If the throttle is
applied too abruptly or if the throttle is not
released during shifting, or if the shift pedal is
not released before applying the throttle, the
front wheels may lift off the ground resulting in a
loss of directional control. Avoid higher speeds
until you are thoroughly familiar with the opera-
tion of your ATV.
w
Always open the throttle gradually and
release the clutch lever slowly. Otherwise,
the ATV could wheelie which would increase
the chance of an accident.
5TG-9-62 7 5/12/05 4:28 PM Page 180