2003 YAMAHA YZ450F lock

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Page 493 of 644

YAMAHA YZ450F 2003  Owners Manual 5 - 26
CHAS
FOURCHE AVANT
Organisation de la dépose:1 Dépose de la fourche avant
Organisation de la dépose Ordre Nom de pièce QtéRemarques
Préparation pour la 
déposeDEPOSE DE LA FOURCHE 
AVANT

Page 496 of 644

YAMAHA YZ450F 2003  Owners Manual 5 - 28
CHASFRONT FORK
EC556000
HANDLING NOTE
NOTE:
The front fork requires careful attention. So it is
recommended that the front fork be main-
tained at the dealers.
ACHTUNG:CAUTION:
To prevent an ac

Page 497 of 644

YAMAHA YZ450F 2003  Owners Manual 5 - 28
CHAS
FOURCHE AVANT
TELESKOPGABEL
HANDHABUNGSHINWEIS
HINWEIS:
Die Teleskopgabel erfordert besondere Auf-
merksamkeit und sollte am besten vom 
Yamaha-Händler gewartet werden.
ACHTUNG:
Um einen

Page 498 of 644

YAMAHA YZ450F 2003  Owners Manual 5 - 29
CHAS
EC553201
Inner tube
1. Remove:
Dust seal 1 
Stopper ring 2 
Using slotted-head screwdriver.
ACHTUNG:CAUTION:
Take care not to scratch the inner tube.
2. Remove:
Inner tube 1 
Oil seal r

Page 500 of 644

YAMAHA YZ450F 2003  Owners Manual 5 - 30
CHAS
EC554200
Base valve
1. Inspect:
Valve assembly 1 
Wear/damage → Replace.
O-ring 2 
Damage → Replace.
EC554400
Fork spring
1. Measure:
Fork spring free length a 
Out of specification

Page 502 of 644

YAMAHA YZ450F 2003  Owners Manual 5 - 31
CHAS
EC554700
Cap bolt
1. Inspect:
Cap bolt 1 
O-ring 2 
Air bleed screw 3 
Wear/damage → Replace.
FRONT FORK
EC555000
ASSEMBLY AND INSTALLATION
Front fork assembly
1. Wash the all parts i

Page 504 of 644

YAMAHA YZ450F 2003  Owners Manual 5 - 32
CHASFRONT FORK
5. Install:
Spring guide 1 
Locknut 2 
To damper rod 3.
NOTE:
Install the spring guide with its cut a facing
upward.
With its thread b facing upward, fully finger
tighten the

Page 512 of 644

YAMAHA YZ450F 2003  Owners Manual 5 - 36
CHASFRONT FORK
21. Measure:
Distance a 
Out of specification → Turn into the
locknut.
Distance a:
20 mm (0.79 in) or more
Between damper rod 1 top and
locknut 2 top.
22. Loosen:
Rebound dam