2006 YAMAHA WR 450F oil

3 - 35
INSP
ADJDRIVE CHAIN STOPPER INSPECTION/FRONT FORK INSPECTION/
FRONT FORK OIL SEAL AND DUST SEAL CLEANING
Tighten the axle nut while pushing down
the drive chain.
T R..
Axle nut:
125 Nm (12.5 m  kg, 90 ft  lb)
Tighten the locknuts.
T R..
Locknut:
16 Nm (1.6 m  kg, 11 ft  lb)
DRIVE CHAIN STOPPER INSPECTION
1. Inspect:
Drive chain stopper 1
Wear indicator groove a has almost dis-
appeared → Replace.
2. Replace:
Drive chain stopper
1
1a
T R..7 Nm (0.7 m · kg, 5.1 ft · lb)
EC36C000
FRONT FORK INSPECTION
1. Inspect:
Front fork smooth action
Operate the front brake and stroke the
front fork.
Unsmooth action/oil leakage → Repair or
replace.
EC36D001
FRONT FORK OIL SEAL AND DUST SEAL
CLEANING
1. Remove:
Protector
Dust seal 1
NOTE:
Use a thin screw driver, and be careful not to
damage the inner fork tube and dust seal.
2. Clean:
Dust seal a
Oil seal b
NOTE:
Clean the dust seal and oil seal after every
run.
Apply the lithium soap base grease on the
inner tube.

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INSP
ADJ
REAR SHOCK ABSORBER INSPECTION
STANDARD POSITION:
This is the position which is back by the spe-
cific number of clicks from the fully turned-in
position.
* For EUROPE
** For AUS, NZ and ZA
CAUTION:
Do not force the adjuster past the minimum
or maximum extent of adjustment. The
adjuster may be damaged.
WARNING
Always adjust each front fork to the same
setting. Uneven adjustment can cause poor
handling and loss of stability.
3. Install:
Rubber cap
Standard position:
11 clicks out
* 8 clicks out
** 12 clicks out
EC36K000
REAR SHOCK ABSORBER INSPECTION
1. Inspect:
Swingarm smooth action
Abnormal noise/unsmooth action →
Grease the pivoting points or repair the
pivoting points.
Damage/oil leakage → Replace.

INSP
ADJ
CONTROLE DE LA PRESSION DES
PNEUS
1. Mesurer:
Pression des pneus
Hors spécifications → Régler.
N.B.:
Contrôler les pneus à froid.
Le pneu risque de se déjanter si le
gonflage est insuffisant.
Une tige de valve de pneu inclinée
indique que le pneu est mal assis.
Une tige de valve de pneu inclinée
indique que le pneu est mal assis. Cor-
riger la position du pneu.
Pression des pneus stan-
dard:
100 kPa
(1,0 kgf/cm
2, 15 psi)
CONTROLE ET SERRAGE DES
RAYONS
1. Contrôler:
Rayons 1
Déformation/endommagement →
Remplacer.
Rayon desserré → Resserrer.
2. Serrer:
Rayons
N.B.:
Veiller à resserrer ces rayons avant et
après le rodage. Après un entraînement
ou une course, vérifier si les rayons ne
sont pas desserrés.
T R..3 Nm (0,3 m · kg, 2,2 ft · lb)
CONTROLE DES ROUES
1. Contrôler:
Voile de roue
Surélever la roue et la faire tour-
ner.
Voile excessif → Remplacer.
CONTROLE DE LA PRESSION DES PNEUS/CONTROLE ET SERRAGE DES RAYONS/CONTROLE DES ROUES
REIFENLUFTDRUCK KONTROLLIEREN/SPEICHEN KONTROLLIEREN UND SPANNEN/RÄDER KONTROLLIEREN
COMPROBACIÓN DE LA PRESIÓN DE LOS NEUMÁTICOS/COMPROBACIÓN Y APRIETE DE LOS RADIOS/
REVISIÓN DE LAS RUEDAS
3 - 43
REIFENLUFTDRUCK
KONTROLLIEREN
1. Messen:
Reifenluftdruck
Nicht nach Vorgabe
→ Einstel-
len.
HINWEIS:
Den Reifenluftdruck bei kaltem
Reifen kontrollieren.
Bei zu niedrigem Reifenluftdruck
besteht die Gefahr, dass der Rei-
fen auf der Felge rutscht.
Ein schräg stehender Ventilschaft
deutet darauf hin, dass der Reifen
sich verschoben hat.
Falls der Ventilschaft schräg steht,
sitzt der Reifen falsch auf. In die-
sem Fall die Reifenlage korrigie-
ren.
Standard-Reifenluft-
druck:
100 kPa
(1,0 kgf/cm
2, 15 psi)
SPEICHEN KONTROLLIEREN UND
SPANNEN
1. Kontrollieren:
Speichen
1
Verbogen/beschädigt
→
Erneuern.
Speiche lose
→ Spannen.
2. Festziehen:
Speichen
HINWEIS:
Die Speichen müssen vor und nach
dem Einfahren gespannt und nach
jeder Fahrt kontrolliert werden.
T R..3 Nm (0,3 m · kg, 2,2 ft · lb)
RÄDER KONTROLLIEREN
1. Kontrollieren:
Felgenschlag
Das Rad anheben und dre-
hen.
Anormaler Schlag
→ Erneu-
ern.COMPROBACIÓN DE LA
PRESIÓN DE LOS NEUMÁTICOS
1. Medir:
Presión de los neumáticos
Fuera del valor especificado →
Ajustar.
NOTA:
Compruebe la presión con los neumá-
ticos fríos.
Si los topes del talón están flojos,
cuando la presión está baja el neumá-
tico se puede salir de su posición en la
llanta.
Si la válvula del neumático está incli-
nada significa que el neumático se ha
desplazado de su posición en la llanta.
Si observa que la válvula está incli-
nada, debe considerar que el neumá-
tico se está saliendo de su posición.
Corrija la posición del neumático.
Presión estándar:
100 kPa
(1,0 kgf/cm
2, 15 psi)
COMPROBACIÓN Y APRIETE DE
LOS RADIOS
1. Comprobar:
Radios 1
Dobladura/daños → Cambiar.
Radio flojo → Apretar.
2. Apretar:
Radios
NOTA:
No olvide volver a apretar los radios
antes y después del rodaje. Después de
una práctica o una carrera, compruebe si
se han aflojado los radios.
T R..3 Nm (0,3 m · kg, 2,2 ft · lb)
REVISIÓN DE LAS RUEDAS
1. Comprobar:
Descentramiento de la rueda
Levante la rueda y gírela.
Descentramiento anómalo →
Cambiar.

3 - 47
INSP
ADJ
LUBRICATION
LUBRICATION
To ensure smooth operation of all compo-
nents, lubricate your machine during setup,
after break-in, and after every race.
1All control cable
2Clutch lever pivot
3Shift pedal pivot
4Footrest pivot
5Throttle-to-handlebar contact
6Drive chain
7Tube guide cable winding portion
8Throttle cable end
9Clutch cable end
0Hot starter cable endÈUse Yamaha cable lube or equivalent on these
areas.
ÉUse SAE 10W-30 motor oil or suitable chain
lubricants.
ÊLubricate the following areas with high quality,
lightweight lithium-soap base grease.
CAUTION:
Wipe off any excess grease, and avoid get-
ting grease on the brake discs.
AAA
AA
B
CC

3 - 49
INSP
ADJ
IGNITION TIMING CHECK
IGNITION TIMING CHECK
1. Remove:
Timing plug 1
1
2. Attach:
Timing light
Inductive tachometer
To the ignition coil lead (orange lead 1).
Timing light:
YM-33277-A/90890-03141
1
3. Adjust:
Engine idling speed
Refer to “IDLE SPEED ADJUSTMENT”.
4. Check:
Ignition timing
Visually check the stationary pointer a is
within the firing range b on the rotor.
Incorrect firing range → Check rotor and
pickup assembly.
5. Install:
Timing plug

3 - 50
INSP
ADJ
BATTERY INSPECTION AND CHARGING
WARNING
Batteries generate explosive hydrogen gas
and contain electrolyte which is made of
poisonous and highly caustic sulfuric acid.
Therefore, always follow these preventive
measures:
Wear protective eye gear when handling
or working near batteries.
Charge batteries in a well-ventilated area.
Keep batteries away from fire, sparks or
open flames (e.g., welding equipment,
lighted cigarettes).
DO NOT SMOKE when charging or han-
dling batteries.
KEEP BATTERIES AND ELECTROLYTE
OUT OF REACH OF CHILDREN.
Avoid bodily contact with electrolyte as it
can cause severe burns or permanent eye
injury.
FIRST AID IN CASE OF BODILY CONTACT:
EXTERNAL
Skin — Wash with water.
Eyes — Flush with water for 15 minutes
and get immediate medical attention.
INTERNAL
Drink large quantities of water or milk fol-
lowed with milk of magnesia, beaten egg
or vegetable oil. Get immediate medical
attention.
CAUTION:
Charging time, charging amperage and
charging voltage for an MF battery are dif-
ferent from those of conventional batteries.
The MF battery should be charged as
explained in the charging method illustra-
tions. If the battery is overcharged, the
electrolyte level will drop considerably.
Therefore, take special care when charging
the battery.
BATTERY INSPECTION AND CHARGING

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INSP
ADJ
ADJUSTING THE HEADLIGHT BEAMS
5. Install:
Headlight bulb
Secure the new headlight bulb with the
headlight bulb holder.
CAUTION:
Avoid touching the glass part of the head-
light bulb to keep it free form oil, otherwise
the transparency of the glass, the life of the
bulb and the luminous flux will be
adversely affected. If the headlight bulb
gets soiled, thoroughly clean it with a cloth
moistened with alcohol or lacquer thinner.
6. Attach:
Headlight bulb holder
7. Install:
Headlight bulb holder cover
8. Install:
Headlight
Refer to “SEAT, FUEL TANK AND SIDE
COVERS” section in the CHAPTER 4.
New
T R..7 Nm (0.7 m · kg, 5.1 ft · lb)
ADJUSTING THE HEADLIGHT BEAMS
1. Adjust:
Headlight beam (vertically)
Adjusting steps:
Turn the adjusting screw 1 in direction a
or b.
Direction a Headlight beam is raised.
Direction bHeadlight beam is lowered.

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ENGCAMSHAFTS
CAMSHAFTS
CYLINDER HEAD COVER
Extent of removal:
1 Cylinder head cover removal
Extent of removal Order Part name Q’ty Remarks
CYLINDER HEAD COVER
REMOVAL
Preparation for removal Seat and fuel tank Refer to “SEAT, FUEL TANK AND SIDE
COVERS” section.
Carburetor Refer to “CARBURETOR” section.
1 Spark plug 1
2 Engine upper bracket (right) 1
3 Engine upper bracket (left) 1
4 Cylinder head breather hose 1
5 Oil tank breather hose 1
6 Bolt (cylinder head cover) 2
7 Cylinder head cover 1
8 Cylinder head cover gasket 1
1