2011 YAMAHA YFZ450R Owners Manual

Accessories and loading ............................ 6-6
RIDING YOUR ATV ...................................... 7-1
GETTING TO KNOW YOUR ATV............... 7-2
RIDE WITH CARE AND GOOD
JUDGMENT .............................................. 7-2
BE CAREFUL WHERE YOU RIDE ............. 7-9
TURNING YOUR ATV .............................. 7-12
CLIMBING UPHILL ................................... 7-13
RIDING DOWNHILL.................................. 7-16
CROSSING A SLOPE............................... 7-18
CROSSING THROUGH SHALLOW
WATER ................................................... 7-19
RIDING OVER ROUGH TERRAIN ........... 7-20
SLIDING AND SKIDDING ......................... 7-21
WHAT TO DO IF... .................................... 7-22
WHAT TO DO... ........................................ 7-22
PERIODIC MAINTENANCE AND
ADJUSTMENT ............................................... 8-1
Owner’s manual and tool kit ....................... 8-2
Periodic maintenance chart for
the emission control system ..................... 8-3
General maintenance and
lubrication chart ........................................ 8-5
Removing and installing the cowling and
panels ....................................................... 8-9Checking the spark plug ...........................8-12
Engine oil and oil filter element .................8-13
Coolant .....................................................8-19
Cleaning the air filter element ...................8-20
Cleaning the spark arrester ......................8-24
Adjusting the throttle lever free play .........8-26
Valve clearance ........................................8-27
Brakes .......................................................8-27
Checking the front and rear brake pads ...8-27
Checking the brake fluid level ...................8-29
Changing the brake fluid ...........................8-30
Checking the front brake lever free play ...8-30
Checking the brake pedal height ..............8-30
Adjusting the parking brake free play .......8-31
Brake light switches ..................................8-32
Adjusting the clutch lever free play ...........8-33
Drive chain slack .......................................8-34
Lubricating the drive chain ........................8-36
Checking and lubricating the cables .........8-37
Checking and lubricating the brake and
clutch levers ............................................8-38
Checking the shift pedal ...........................8-38
Checking and lubricating the brake
pedal .......................................................8-38
Checking the wheel hub bearings .............8-39
Lubricating the swingarm pivots ...............8-39
U18P64E0.book Page 2 Thursday, May 13, 2010 6:00 PM

Lubricating the upper and lower arm
pivots ...................................................... 8-40
Lubricating the steering shaft ................... 8-41
Battery ...................................................... 8-41
Replacing the fuse ................................... 8-44
Replacing a headlight bulb ....................... 8-44
Adjusting a headlight beam ...................... 8-46
Tail/brake light .......................................... 8-47
Removing a wheel .................................... 8-47
Installing a wheel ...................................... 8-48
Troubleshooting ....................................... 8-49
Troubleshooting charts ............................. 8-50
CLEANING AND STORAGE .......................... 9-1
Cleaning ..................................................... 9-1
Storage ....................................................... 9-2
SPECIFICATIONS ...................................... 10-1
CONSUMER INFORMATION ...................... 11-1
Identification numbers .............................. 11-1
U18P64E0.book Page 3 Thursday, May 13, 2010 6:00 PM

1-1
1
EBU29680
LOCATION OF THE WARNING AND SPECIFICATION LABELS
EBU29991Read and understand all of the labels on your ATV. These labels contain important information for safe and
proper operation.
Never remove any labels from your ATV. If a label becomes difficult to read or comes off, request a replace-
ment label from your Yamaha dealer.
For Europe
8
7
6 1
2
3
4
6
5
U18P64E0.book Page 1 Thursday, May 13, 2010 6:00 PM

1-2
1
4D3-2816L-20
1AS-2816P-00
43P-2816R-01
12
3U18P64E0.book Page 2 Thursday, May 13, 2010 6:00 PM

1-3
1
27.5 kPa
0.275 kgf/cm²
4.0 psi 30.0 kPa
0.30 kgf/cm²
4.4 psi
5D3-2816M-M0
5TG-2415E-00
Use
PREMIUM unleaded gasoline with min. 97 octane (RON).
Nur Super Bleifrei mit Mindestoktanzahl 97 (ROZ) tanken.
Utilice gasolina sin plomo que tenga como mínimo 97 octanos
(RON).
Utiliserune essence SUPER sans plomb d'un indice
d'octane (RON) de min. 97.Utilizzare benzina PREMIUM super senza piombo con almeno 97
ottani(RON).
Gebruik loodvrije
SUPERBENZINE met een octaangetal (RON) van
minstens 97.
Utilize gasolina sem chumbo com índice de octano mínimo de 97 (RON).
Använd blyfri PREMIUMBENSIN av 97 oktan (RON) eller mer.
4AA-22259-40
18P-2156A-10
YFZ450R
29.4 kW 184 kg
8AC-2817L-00
YAMAHA MOTOR CO., LTD.
2500 SHINGAI, IWATA, JAPAN
2010
4
56
8 7
U18P64E0.book Page 3 Thursday, May 13, 2010 6:00 PM

1-4
1Familiarize yourself with the following pictograms and read the explanatory text, then make sure to check
the pictograms that apply to your model.
Read the Owner’s manual.
ALWAYS use an approved helmet and
protective gear.
NEVER permit children under age 6 to
operate this ATV.
Operation of this ATV by children under the
age of 6 increases the risk of severe injury
or death.
Adult supervision required for children under
age 16.
NEVER permit children under age 10 to
operate this ATV.
Operation of this ATV by children under the
age of 10 increases the risk of severe injury
or death.
Adult supervision required for children under
age 16.NEVER permit children under age 12 to
operate this ATV.
Operation of this ATV by children under the
age of 12 increases the risk of severe injury
or death.
Adult supervision required for children under
age 16.
NEVER operate this ATV if you are under
age 16.
Operating this ATV if you are under the age
of 16 increases your chance of severe injury
or death.
NEVER use on paved roads.
NEVER carry passengers.
U18P64E0.book Page 4 Thursday, May 13, 2010 6:00 PM

1-5
1
**.* kPa
*.** kgf/cm²
*.* psi**.* kPa
*.** kgf/cm²
*.* psi
NEVER use with drugs or alcohol.
NEVER store fuel or flammable liquids.
This unit contains high-pressure nitrogen
gas.
Mishandling can cause an explosion. Do not
incinerate, puncture or open.
Use unleaded gasoline only.
Measure the tire pressure when the tires are
cold.Adjust the tire pressure.
Improper tire pressure can cause loss of
control.
Loss of control can result in severe injury or
death.
Turning the ATV in 4WD-LOCK
(“DIFF.LOCK”) takes more effort.
Operate at a slow speed and allow extra
time and distance for maneuvers to avoid
loss of control.
This pictogram shows the loading limits
and/or maximum load capacity for this ATV.
Follow all load limits and other loading
guidelines in this manual.
Load may include the driver, passenger,
human protective gear, accessories, goods,
luggage, and all other load related items.
Make sure you do not exceed the load limits.
Overloading can cause loss of control.
Loss of control can result in severe injury or
death.
U18P64E0.book Page 5 Thursday, May 13, 2010 6:00 PM

1-6
1
******
*** kW *** kg1
23
YAMAHA MOTOR CO., LTD.
2500 SHINGAI, IWATA, JAPAN
****1This pictogram shows trailer Hitch Tow
weight limit. (Combined weight of the trailer
and all cargo in the trailer.)
Overloading can cause loss of control.
Loss of control can result in severe injury or
death.
This pictogram shows trailer Hitch Tongue
weight limit. (Weight on the trailer tongue.)
Overloading can cause loss of control.
Loss of control can result in severe injury or
death.
1
2
3Model Name
Max. Power
Mass In Running Order
1
Year of construction
U18P64E0.book Page 6 Thursday, May 13, 2010 6:00 PM