2004 YAMAHA WR 450F Notices Demploi (in French)

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YAMAHA WR 450F 2004  Notices Demploi (in French) 4 - 10
ENG
Organisation de la dépose Ordre Nom de pièce QtéRemarques
HPointeau 1
IGicleur principal 1
JGicleur de ralenti 1
KEntretoise 1
LGicleur de starter 1
MPuits d’aiguille 1
NTige de pouss

Page 322 of 754

YAMAHA WR 450F 2004  Notices Demploi (in French) 4 - 11
ENGCARBURETOR
EC466020
HANDLING NOTE
CAUTION:
Do not loosen the screws {TPS (throttle
position sensor)} 1 except when changing
the TPS (throttle position sensor) due to
failure because it will

Page 323 of 754

YAMAHA WR 450F 2004  Notices Demploi (in French) ENG
4 - 11
CARBURATEUR
VERGASER
CARBURADOR
HINWEIS ZUM HANDLING
ACHTUNG:
Die TPS-Schrauben (Drosselklap-
pen-Positionssensor) 1 nicht lö-
sen – außer wenn der TPS (Dros-
selklappen-Positionssensor

Page 324 of 754

YAMAHA WR 450F 2004  Notices Demploi (in French) 4 - 12
ENGCARBURETOR
Needle valve
1. Inspect:
Needle valve 1 
Valve seat 2 
Grooved wear a → Replace.
Dust b → Clean.
EC464300
Throttle valve
1. Check:
Free movement
Stick → Repair or replace

Page 325 of 754

YAMAHA WR 450F 2004  Notices Demploi (in French) ENG
4 - 12
Pointeau
1. Contrôler:
Pointeau 1
Siège de pointeau 2
Usure creusée a → Changer.
Poussière b → Nettoyer.
Boisseau
1. Vérifier:
Mouvement
Coincement → Réparer ou
changer.
Ins

Page 326 of 754

YAMAHA WR 450F 2004  Notices Demploi (in French) 4 - 13
ENGCARBURETOR
Measurement and adjustment steps:
Hold the carburetor in an upside down
position.
NOTE:
Slowly tilt the carburetor in the opposite
direction, then take the measurement
when the

Page 327 of 754

YAMAHA WR 450F 2004  Notices Demploi (in French) ENG
4 - 13
CARBURATEUR
VERGASER
CARBURADOR
Arbeitsschritte:
Vergaser auf den Kopf stellen.
HINWEIS:
Den Vergaser langsam umdre-
hen und die Messung erst vor-
nehmen, wenn Nadelventil und
Schwimmerhe

Page 328 of 754

YAMAHA WR 450F 2004  Notices Demploi (in French) 4 - 14
ENG
Accelerator pump
1. Inspect:
Diaphragm (accelerator pump) 1 
Spring 2 
Cover 3 
O-ring 4 
Push rod 5 
Tears (diaphragm)/damage → Replace.
Dirt → Clean.
2. Inspect:
Throttle shaft