3-16
CHASSIS
CHECKING THE DRIVE CHAIN
1. Measure:
• Drive chain length (15 links) "a"
Out of specification
→
Replace.
• While measuring the drive chain
length, push down on the drive
chain to increase its tension.
• Measure the length between drive
chain roller "1" and "16" as shown.
• Perform this measurement at two or
three different places.
2. Remove:
• Master link clip
• Joint "1"
• Drive chain "2"
3. Clean:
• Drive chain
Place it in kerosene, and brush off
as much dirt as possible. Then re-
move the drive chain from the ker-
osene and dry the drive chain.
4. Check:
• Drive chain stiffness "a"
Clean and oil the drive chain and
hold as illustrated.
Stiff
→
Replace the drive chain.
5. Install:
• Drive chain "1"
• Joint "2"
• Master link clip "3"
Be sure to install the master link
clip to the direction as shown.
a. Turning direction
6. Lubricate:
• Drive chain
ADJUSTING THE DRIVE CHAIN
SLACK
1. Elevate the rear wheel by placing
the suitable stand under the en-
gine.
2. Check:
• Drive chain slack "a"
Above the seal guard installation
bolt.
Out of specification
→
Adjust.
Before checking and/or adjusting, ro-
tate the rear wheel through several
revolutions and check the slack sev-
eral times to find the tightest point.
Check and/or adjust the drive chain
slack with the rear wheel in this "tight
chain" position.
3. Adjust:
• Drive chain slack
Drive chain slack adjustment
steps:
a. Loosen the axle nut "1" and lock-
nuts "2".
b. Adjust the drive chain slack by
turning the adjusters "3".
c. Turn each adjuster exactly the
same amount to maintain correct
axle alignment. (There are marks
"a" on each side of the drive chain
puller alignment.)
Turn the adjuster so that the drive
chain is in line with the sprocket, as
viewed from the rear.
Too small drive chain slack will
overload the engine and other vital
parts; keep the slack within the
specified limits.
d. Tighten the axle nut while pushing
down the drive chain.
e. Tighten the locknuts.
Drive chain length (15
links):
<Limit>: 242.9 mm
(9.563 in)
Drive chain lubricant:
SAE 10W-30 motor oil
or suitable chain lubri-
cants
Drive chain slack:
48–58 mm (1.9–2.3 in)
To tighten
→
Turn the adjuster "3"
counterclockwise.
To loosen
→
Turn the adjuster "3"
clockwise and push wheel for-
ward.
Axle nut:
125 Nm (12.5 m•kg, 90
ft•lb)
Locknut:
19 Nm (1.9 m•kg, 13
ft•lb)
Summary of Contents for YZ450F(X)
Page 2: ......
Page 37: ...2 17 LUBRICATION DIAGRAMS 1 Intake camshaft 2 Exhaust camshaft A To main axle B From oil pump ...
Page 56: ...3 12 ENGINE INTAKE EXHAUST ...
Page 87: ...4 21 CYLINDER HEAD ...
Page 106: ...4 40 OIL PUMP 15 Oil pump drive shaft 1 16 Rotor housing 1 Order Part name Q ty Remarks ...
Page 156: ...5 29 STEERING 9 Bearing race 2 Refer to removal section Order Part name Q ty Remarks ...
Page 165: ...5 38 REAR SHOCK ABSORBER 12 Bearing 2 Refer to removal section Order Part name Q ty Remarks ...
Page 186: ......
Page 196: ...1 4 VERIFICATION DES CONNEXIONS ...
Page 223: ...2 18 DIAGRAMMES DE LUBRIFICATION ...
Page 243: ...3 13 MOTEUR ADMISSION ECHAPPEMENT ...
Page 260: ...4 6 RADIATEUR 11 Tuyau 1 Joint torique 1 1 Ordre Nom de la pièce Qté Remarques ...
Page 276: ...4 22 CULASSE 3 Monter Boulon culasse 1 Boulon culasse 10 Nm 1 0 m kg 7 2 ft lb ...
Page 290: ...4 36 EMBRAYAGE ...
Page 380: ......
Page 435: ...3 13 MOTOR EINLASS AUSLASS ...
Page 451: ...4 5 AUSPUFFKRÜMMER UND SCHALLDÄMPFER ...
Page 474: ...4 28 VENTILE UND VENTILFEDERN ...
Page 549: ...5 38 FEDERBEIN 12 Lager 2 Siehe den Abschnitt zum Ausbau Reihenfolge Bauteil Anz Bemerkungen ...
Page 572: ......
Page 573: ......