2002 YAMAHA YZ250F oil

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Page 247 of 666

YAMAHA YZ250F 2002  Notices Demploi (in French) INSP
ADJ
CONTROLE DE PRESSION DES PNEUS/CONTROLE ET SERRAGE DES RAYONS/
CONTROLE DE LA ROUE
REIFENLUFTDRUCK KONTROLLIEREN/SPEICHEN KONTROLLIEREN UND
FESTZIEHEN/RÄDER KONTROLLIEREN
CONTROLLO DELLA PRE

Page 252 of 666

YAMAHA YZ250F 2002  Notices Demploi (in French) 3 - 45
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 pivo

Page 296 of 666

YAMAHA YZ250F 2002  Notices Demploi (in French) 4 - 20
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

Page 308 of 666

YAMAHA YZ250F 2002  Notices Demploi (in French) 4 - 26
ENGCAMSHAFTS
CAUTION:
Do not turn the crankshaft during the
camshaft installation. Damage or
improper valve timing will result.
Install the clips, camshaft caps 4 and
bolts (camshaft cap) 5.
T

Page 312 of 666

YAMAHA YZ250F 2002  Notices Demploi (in French) 4 - 28
ENG
7. Install:
Oil tank breather hose
Cylinder head breather hose 
Spark plug
T R..13 Nm (1.3 m · kg, 9.4 ft · lb)
CAMSHAFTS

Page 314 of 666

YAMAHA YZ250F 2002  Notices Demploi (in French) 4 - 29
ENGCYLINDER HEAD
CYLINDER HEAD
Extent of removal:1 Cylinder head removal
Extent of removal Order Part name Q’ty Remarks
CYLINDER HEAD REMOVAL
Preparation for removal Seat and fuel tank Refer

Page 317 of 666

YAMAHA YZ250F 2002  Notices Demploi (in French) ENG
4 - 30
CULASSE
ZYLINDERKOPF
TESTATA DEL CILINDRO
PRÜFUNG
Zylinderkopf
1. Entfernen:
Ölkohleablagerungen (im 
Brennraum)
Einen abgerundeten Scha-
ber verwenden.
HINWEIS:
Keine scharfkantigen Geg

Page 318 of 666

YAMAHA YZ250F 2002  Notices Demploi (in French)  
4 - 31
ENG
 
CYLINDER HEAD 
ASSEMBLY AND INSTALLATION
Cylinder head  
1. Install: 
 
Decompression shaft   
1  
  
 
Copper washer   
2 
 
Bolt (decompression shaft)   
3  
 
NOTE:
 
Apply the en