2019 YAMAHA YFZ450 Owners Manual

RIDING YOUR ATV ........................................ 7-1GETTING TO KNOW YOUR ATV ................ 7-2
RIDE WITH CARE AND GOOD JUDGMENT .............................................. 7-2
BE CAREFUL WHERE YOU RIDE ............... 7-8
TURNING YOUR ATV................................ 7-11
CLIMBING UPHILL ................................... 7-13
RIDING DOWNHILL .................................. 7-16
CROSSING A SLOPE................................ 7-17
CROSSING THROUGH SHALLOW WATER .................................................... 7-18
RIDING OVER ROUGH TERRAIN ............. 7-20
SLIDING AND SKIDDING.......................... 7-20
WHAT TO DO IF... ..................................... 7-21
WHAT TO DO... ......................................... 7-22
PERIODIC MAINTENANCE AND
ADJUSTMENT................................................ 8-1 Owner’s Manual and tool kit ....................... 8-2
Periodic maintenance chart: Emission control system .......................................... 8-3
Periodic maintenance chart: General maintenance and lubrication..................... 8-5
Removing and installing the cowling and panels...................................................... 8-10
Checking the spark plug ........................... 8-13
Engine oil and oil filter element ................. 8-14 Coolant ..................................................... 8-20
Cleaning the air filter element ................... 8-21
Cleaning the spark arrester ...................... 8-25
Adjusting the throttle lever free play ......... 8-28
Valve clearance......................................... 8-28
Brakes....................................................... 8-28
Checking the front and rear brake pads... 8-29
Checking the brake fluid level .................. 8-30
Changing the brake fluid .......................... 8-31
Checking the front brake lever free play... 8-32
Checking the brake pedal height.............. 8-32
Adjusting the parking brake free play ....... 8-33
Brake light switches ................................. 8-34
Adjusting the clutch lever free play .......... 8-35
Drive chain slack....................................... 8-36
Lubricating the drive chain ....................... 8-38
Checking and lubricating the cables ........ 8-38
Checking and lubricating the brake and
clutch levers ........................................... 8-39
Checking the shift pedal ........................... 8-40
Checking and lubricating the brake pedal ....................................................... 8-40
Checking the wheel hub bearings ............ 8-40
Lubricating the swingarm pivots .............. 8-41
Lubricating the upper and lower arm pivots ...................................................... 8-41
Lubricating the steering shaft ................... 8-42UBW262E0.book Page 2 Tuesday, April 3, 2018 10:59 AM

Battery....................................................... 8-43
Replacing the fuse .................................... 8-46
Replacing a headlight bulb ....................... 8-46
Adjusting a headlight beam ...................... 8-49
Brake/tail light ........................................... 8-49
Removing a wheel ..................................... 8-49
Installing a wheel....................................... 8-50
Troubleshooting ........................................ 8-50
Troubleshooting charts ............................. 8-52
CLEANING AND STORAGE ........................... 9-1 Cleaning ...................................................... 9-1
Storage........................................................ 9-2
SPECIFICATIONS ........................................ 10-1
CONSUMER INFORMATION ....................... 11-1 Identification numbers .............................. 11-1
INDEX ........................................................... 12-1
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1
EBU29681
LOCATION OF THE WARNING AND SPECIFICATION LABELS
EBU37261Read 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 re-
placement label from your Yamaha dealer.
9
8
1
2
543
8
76
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1-2
1
1P0-F816R-00
YAMAHA
1HP-F811R-00
YAMAHA
123UBW262E0.book Page 2 Tuesday, April 3, 2018 10:59 AM

1-3
1
1TD-F415E-20
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).
Utiliser une 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.
3C2-F816P-00
YAMAHA
35.0 kPa
0.35 kgf/cm²
5.0 psi 35.0 kPa
0.35 kgf/cm²
5.0 psi
1TD-F816M-M0
E10
E5
B4F-F817K-00
4
67 5
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1-4
1
1HP-F2259-21
YAMAHA MOTOR CO., LTD.SHIZUOKA JAPANYAMAHA
4GB-2155A-00
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1
Familiarize 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 man
ual.
ALWAYS use an appro ved helmet and
protectiv e gear.
Use from 16 years old.
Operating this ATV if you are under the age
of 16 increases your chance of se vere injury
or death. NEVER use on pa
ved roads.
NEVER carry passengers.
NEVER use with dr ugs or alcohol.
NEVER store fuel or flammab le liquids.
This
unit contains high-press ure nitrogen
gas.
Mishandling can ca use an explosion. Do not
incinerate, puncture or open.
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1
E10E5

**.* kPa
*.** kgf/cm²
*.* psi **.* kPa
*.** kgf/cm²
*.* psi
This 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.
EN228 fuel identification mark.
Gasoline of ethanol 10% or less can be
used. EN228 fuel identification mark.
Gasoline of ethanol 5% or less can be used.
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.
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.
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.
UBW262E0.book Page 6 Tuesday, July 17, 2018 1:20 PM