2005 YAMAHA WR 250F Chain

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Page 197 of 864

YAMAHA WR 250F 2005  Owners Manual 3 - 6
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*: USAFOURCHES
Contrôler et régler
Remplacer l’huileHuile de fourche “S1”
Remplacer la bague d’étanchéité
BAGUE D’ETANCHEITE ET JOINT 
ANTIPOUSSIERE DE FOURCHE
Nettoyer e

Page 207 of 864

YAMAHA WR 250F 2005  Owners Manual 3 - 16
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PRE-OPERATION INSPECTION AND MAINTENANCE
EC320000
PRE-OPERATION INSPECTION AND MAINTENANCE
Before riding for break-in operation, practice or a race, make sure the machine is in good op

Page 208 of 864

YAMAHA WR 250F 2005  Owners Manual 3 - 17
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CONTROLE ET ENTRETIEN AVANT UTILISATION
Avant d’entamer le rodage du véhicule, un entraînement ou une course, s’assurer que la moto est en bon état de marche.
Avant d’utiliser

Page 244 of 864

YAMAHA WR 250F 2005  Owners Manual 3 - 53
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6. Adjust:
Valve clearance
Adjustment steps:
Remove the camshaft (intake
and exhaust).
Refer to “CAMSHAFTS” section
in the CHAPTER 4.
Remove the valve lifters 
1 and
the pads 
2

Page 268 of 864

YAMAHA WR 250F 2005  Owners Manual 3 - 77
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BRAKE FLUID LEVEL 
INSPECTION
1. Place the brake master cylinder
so that its top is in a horizontal
position.
2. Inspect:
Brake fluid level
Fluid at lower level 
→ Fill up.
aLower l

Page 270 of 864

YAMAHA WR 250F 2005  Owners Manual 3 - 79
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DRIVE CHAIN INSPECTION
1. Measure:
Drive chain length (15 links) 
a 
Out of specification 
→ 
Replace.
NOTE:While measuring the drive chain
length, push down on the drive
chain to

Page 272 of 864

YAMAHA WR 250F 2005  Owners Manual 3 - 81
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6. Install:
Chain joint 
1 
O-ring 
2 
Drive chain 
3 
NOTE:When installing the drive chain, apply
the lithium soap base grease on the
chain joint and O-rings.
7. Install:
Link pla

Page 274 of 864

YAMAHA WR 250F 2005  Owners Manual 3 - 83
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3. Adjust:
Drive chain slack
DRIVE CHAIN STOPPER 
INSPECTION
1. Inspect:
Drive chain stopper 
1 
Wear indicator groove 
a has
almost disappeared 
→
Replace.
2. Replace:
Drive chai