2003 YAMAHA WR 450F oil

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Page 297 of 754

YAMAHA WR 450F 2003  Notices Demploi (in French) INSP
ADJ
6. Montieren: 
Batterie
Batterieband
7. Anschließen: 
Batteriekabel 
(an die Batteriepole)
ACHTUNG:
Stets zuerst das Pluskabel 1,
dann erst das Massekabel 2 an-
klemmen.
8. Kontrollieren:

Page 300 of 754

YAMAHA WR 450F 2003  Notices Demploi (in French) 3 - 58
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

Page 342 of 754

YAMAHA WR 450F 2003  Notices Demploi (in French) 4 - 21
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 352 of 754

YAMAHA WR 450F 2003  Notices Demploi (in French) 4 - 26
ENGCAMSHAFTS
Decompression system
1. Check:
Decompression system
Checking steps:
Check that the decompressor cam 1
moves smoothly.
Check that the decompressor lever pin 2
projects from the c

Page 354 of 754

YAMAHA WR 450F 2003  Notices Demploi (in French) 4 - 27
ENGCAMSHAFTS
Fit the timing chain 3 onto both camshaft
sprockets and install the camshafts on the
cylinder head.
NOTE:
The camshafts should be installed onto the
cylinder head so that the exha

Page 358 of 754

YAMAHA WR 450F 2003  Notices Demploi (in French) 4 - 29
ENGCYLINDER HEAD
CYLINDER HEAD
CYLINDER HEAD
Extent of removal:1 Cylinder head removal
NOTE:
Tighten the cylinder head bolts to 30 Nm (3.0 m · kg, 22 ft · lb) in the proper tightening sequenc

Page 361 of 754

YAMAHA WR 450F 2003  Notices Demploi (in French) ENG
4 - 30
CULASSE
ZYLINDERKOPF
CULATA
PRÜFUNG
Zylinderkopf
1. Entfernen:
Ölkohleablagerungen (im
Brennraum)
Einen abgerundeten Scha-
ber verwenden.
HINWEIS:
Keine scharfkantigen Gegenstände
benut

Page 364 of 754

YAMAHA WR 450F 2003  Notices Demploi (in French)  
4 - 32
ENG
 
 
Remove the bolts. 
 
Again apply the molybdenum disulfide
grease on the threads and contact sur-
faces of the bolts and on both contact sur-
faces of the plain washers. 
 
Retighte