2007 YAMAHA WR 250F transmission

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Page 526 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 5 - 119
ENGCLUTCH
EC4A3000REMOVAL POINTS
Clutch boss
1. Remove:
Nut 
1 
Lock washer 
2 
Clutch boss 
3 
NOTE:Straighten the lock washer tab and
use the clutch holding tool 
4 to hold
the clutch bos

Page 530 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 5 - 123
ENGCLUTCH
EC4A5000ASSEMBLY AND INSTALLATION
Push lever shaft
1. Install:
Push lever shaft 
1 
Bolt (push lever shaft) 
2 
NOTE:Apply the lithium soap base grease
on the oil seal lip.
Apply

Page 544 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 5 - 137
ENGOIL FILTER ELEMENT, WATER PUMP AND RIGHT CRANKCASE COVER
REMOVAL POINTS
Impeller shaft
1. Remove:
Impeller 
1 
Washer 
2 
Impeller shaft 
3 
NOTE:Hold the impeller shaft on its width
acr

Page 548 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 5 - 141
ENGOIL FILTER ELEMENT, WATER PUMP AND RIGHT CRANKCASE COVER
Impeller shaft
1. Install:
Impeller shaft 
1 
Washer 
2 
Impeller 
3 
NOTE:Take care so that the oil seal lip is
not damaged or

Page 553 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 5 - 146
ENG
BALANCIER
Organisation de la dépose:1 Pignon menant d’arbre de balancier2 Arbre de balancier
Organisation de la dépose Ordre Nom de la pièce QtéRemarques
DEPOSE DU BALANCIER
Prépara

Page 556 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 5 - 149
ENGBALANCER
REMOVAL POINTS
Balancer shaft drive gear and 
balancer shaft driven gear
1. Straighten the lock washer tab.
2. Loosen:
Nut (primary drive gear) 
1 
Nut 
(balancer shaft driven ge

Page 558 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 5 - 151
ENGBALANCER
ASSEMBLY AND INSTALLATION
Balancer shaft, balancer shaft 
drive gear and balancer shaft 
driven gear
1. Install:
Balancer shaft 
1 
NOTE:Apply the engine oil on the bear-
ing.
W

Page 561 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 5 - 154
ENG
POMPE A HUILE
Organisation de la dépose:1 Dépose de la pompe à huile2 Démontage de la pompe à huile.
Organisation de la dépose Ordre Nom de la pièce QtéRemarques
DEPOSE ET DEMONTAG