2003 YAMAHA WR 450F oil

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Page 297 of 754

YAMAHA WR 450F 2003  Owners Manual 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  Owners Manual 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  Owners Manual 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  Owners Manual 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  Owners Manual 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  Owners Manual 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  Owners Manual 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  Owners Manual  
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