Yamaha Motor YZ250F 2005 Manuel D'atelier Du Proprietaire page 648

SETTING
Drive and rear wheel sprockets setting
parts
Part name
Drive sprocket 1
(STD)
Rear wheel
sprocket 2 (STD)
* (STD)
* For EUROPE
EC721002
Tire pressure
Tire pressure should be adjust to suit the road
surface condition of the circuit.
Standard tire pressure:
100 kPa (1.0 kgf/cm
• Under a rainy, muddy, sandy, or slippery
condition, the tire pressure should be lower
for a larger area of contact with the road sur-
face.
Extent of adjustment:
60 ~ 80 kPa
(0.6 ~ 0.8 kgf/cm
• Under a stony or hard road condition, the tire
pressure should be higher to prevent a flat
tire.
Extent of adjustment:
100 ~ 120 kPa
(1.0 ~ 1.2 kgf /cm
7 - 12
T U N
Size Part number
13T 9383B-13218
47T 1C3-25447-00
48T 1C3-25448-00
49T 1C3-25449-00
50T 1C3-25450-00
51T 1C3-25451-00
52T 1C3-25452-00
2
, 15 psi)
2
, 9.0 ~ 12 psi)
2
, 15 ~ 18 psi)