2006 YAMAHA YFZ450 torque

4-31
1. Spring preload adjusting nut
2. Locknut 3. Special wrench
1.Écrou de réglage de la précontrainte de ressort
2.Contre- écrou 3.Clé speciale
1. Tuerca de ajuste de precarga del resorte
2. Contratuerca 3. Llave especial
A. Spring length
A.Longueur du ressortA. Longitud del resorte
Adjust the spring preload as follows.
1. Loosen the locknut.
2. Turn the adjusting nut in direction ato
increase the spring preload and in direction
bto decrease the spring preload.
3. The length of the spring (installed)
changes 1.5 mm per turn of the adjusting
nut.
NOTE:
A special wrench can be obtained at a Yamaha
dealer to make this adjustment.
4. Tighten the locknut to the specified torque.Measurement A:
Installed length:
Minimum (hard): 246.5 mm
Standard: 255 mm
Maximum (soft): 261.5 mm
Tightening torque:
Locknut:
30 Nm (3.0 m0kgf)
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4-33
cC
Always tighten the locknut against the
adjusting nut, and then tighten it to the spec-
ified torque.
Adjust the rebound damping force as follows.
Turn the rebound damping force adjusting screw
in direction ato increase the rebound damping
force and in direction bto decrease the
rebound damping force.
1. Rebound damping force adjusting screw1.Molette de réglage de la force d’amortissement de détente1. Dial de ajuste de la amortiguación de rebote
From the fully turned-in position
Minimum (soft): 22 click(s) out
Standard: 11 click(s) out
Maximum (hard): 1 click(s) out
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4-45
A. Spring lengthA.Longueur du ressortA. Longitud del resorte
7. Tighten the locknut to the specified torque.
cC
Always tighten the locknut against the
adjusting nut, and then tighten it to the spec-
ified torque.
8. Place the air filter case in the original posi-
tion, connect the air intake duct, and then
tighten the clamp screw at the carburetor
side.
9. Install the bolts, and then connect the
hose.
10. Install the seat.Measurement A:
Installed length:
Minimum (hard): 250 mm
Standard: 257 mm
Maximum (soft): 264 mm
Tightening torque:
Locknut:
45 Nm (4.5 m0kgf)
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5-29
EBU01600
Tire wear limit
When the tire groove decreases to 3 mm (0.12
in) due to wear, replace the tire.
EBU11620
Fittings and fasteners
Always check the tightness of chassis fittings
and fasteners before a ride. Take the machine
to a Yamaha dealer or refer to the Service
Manual for correct tightening torque.
EBU10030
Lights
Check the headlights and tail/brake light to
make sure they are in working condition. Repair
as necessary for proper operation.
EBU11700
Switches
Check the operation of all switches. Have a
Yamaha dealer repair as necessary for proper
operation.
a
a. Tire wear limita. Limite d’usure de pneua. Límite de desgaste de los neumáticos
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8-3
EBU12220
Owner’s manual and tool kit
You are recommended to put this owner’s man-
ual and low-pressure tire gauge in the vinyl bag
and always carry them along with the owner’s
tool kit under the seat. The service information
included in this manual is intended to provide
you, the owner, with the necessary information
for completing your own preventive maintenance
and minor repairs. The tools provided in the
owner’s tool kit are sufficient for this purpose,
except that a torque wrench is also necessary to
properly tighten nuts and bolts.
NOTE:
If you do not have a torque wrench available
during a service operation requiring one, take
your machine to a Yamaha dealer to check the
torque settings and adjust them as necessary.
1. Owner’s manual
2. Owner’s tool kit
3. Low-pressure tire gauge
1. Manuel du propriétaire
2. Trousse à outils du propriétaire
3. Manomètre basse pression pour pneus
1. Manual del propietario
2. Juego de herramientas del propietario
3. Manómetro de baja presión
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8-33
NOTE:
Skip steps 7–10 if the oil filter element is not
being replaced.
7. Remove the oil filter element cover by
removing the bolts, and then remove the
oil filter element.
8. Check the O-rings for damage, and
replace them if necessary.
9. Install a new oil filter element and the O-
rings.
NOTE:
Make sure that the O-rings are properly seated.
10. Install the oil filter element cover by
installing the bolts, and then tighten them
to the specified torque.1. Oil filter element 2. O-ring (×2)1. Élément du filtre à huile 2. Joint torique (×2)1. Filtro de aceite 2. Junta torica (×2) 1. Oil filter element cover 2. Bolt (×3)
1. Couvercle de l’élément du filtre à huile
2. Boulon (×3)
1. Cubierta del elemento del filtro de aceite
2. Perno (×3)
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8-35
11. Install the crankcase engine oil drain bolt
and the engine oil tank drain bolt, and then
tighten them to the specified torques.
12. Pour the specified amount of recommend-
ed engine oil through the engine oil tank
filler hole, insert the dipstick, and then
tighten the engine oil tank filler cap.
13. Pour the specified amount of recommend-
ed engine oil through the engine oil filler
hole, and then install and tighten the
engine oil filler cap.
Tightening torque:
Oil filter element cover bolt:
10 Nm (1.0 m0kgf)
Tightening torques:
Crankcase engine oil drain bolt:
20 Nm (2.0 m0kgf)
Engine oil tank drain bolt:
19 Nm (1.9 m0kgf)
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8-39
cC
8In order to prevent clutch slippage (since
the engine oil also lubricates the clutch),
do not mix any chemical additives. Do not
use oils with a diesel specification of “CD”
or oils of a higher quality than specified. In
addition, do not use oils labeled “ENERGY
CONSERVING II” or higher.
8Make sure that no foreign material enters
the crankcase.
14. Start the engine, and then let it idle for sev-
eral minutes while checking it for oil leak-
age. If oil is leaking, immediately turn the
engine off and check for the cause.
15. Turn the engine off, and then check the oil
level and correct it if necessary.
16. Install the engine guard by installing the
bolts, and then tighten them to the speci-
fied torque.
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