Yamaha WR250F(P), Owner'S Service Manual, Page: 666 / 694

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T U N
SETTING
EC72N000
Drive and rear wheel sprockets setting
parts
Part name Size Part number
Drive sprocket 1
(STD) 13T 9383B-13218
Rear wheel
sprocket
2
(STD)
48T
50T
52T
54T 5GS-25448-50
5GS-25450-50
5GS-25452-50
5PH-25454-50
EC721002
Tire pressure
Tire pressure should be adjust to suit the road
surface condition of the circuit.
●
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.
●
Under a stony or hard road condition, the tire
pressure should be higher to prevent a flat
tire.
Standard tire pressure:
100 kPa (1.0 kgf/cm
2
, 15 psi)
Extent of adjustment:
60 ~ 80 kPa
(0.6 ~ 0.8 kgf/cm
2
, 9.0 ~ 12 psi)
Extent of adjustment:
100 ~ 120 kPa
(1.0 ~ 1.2 kgf/cm
2
, 15 ~ 18 psi)