2007 YAMAHA WR 250F air condition

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Page 374 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 4 - 15
TUNSETTING
Examples of carburetor setting depending on symptom
This should be taken simply for an example. It is necessary to set the carburetor while checking the operating condi-
tions of the

Page 375 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 4 - 16
TUN
Exemples de réglages du carburateur en fonction des symptômes
Ce qui précède ne sert qu’à titre d’exemple. Le réglage du carburateur doit se faire en fonction des conditions de fo

Page 380 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 4 - 21
TUNSETTING
EC720000
CHASSIS
Selection of the secondary 
reduction ratio (Sprocket)
<Requirement for selection of sec-
ondary gear reduction ratio>
It is generally said that the second-
ary gea

Page 384 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 4 - 25
TUNSETTING
EC722011Front fork setting
The front fork setting should be made
depending on the rider’s feeling of an
actual run and the circuit conditions.
The front fork setting includes the f

Page 450 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 5 - 43
ENGAIR INDUCTION SYSTEM
INSPECTION
Air induction system
1. Inspect:
Air induction hose
Crack/damage 
→ Replace.
Air induction pipe
Crack/damage 
→ Replace.
2. Check:
Operation of air cut
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