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Yamaha WR250F(Y) 2009 Owner's Service Manual page 34

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CHASSIS
Item
Steering system:
Steering bearing type
Front suspension:
Front fork travel
Fork spring free length
Spring rate, STD
Optional spring/spacer
Oil capacity
Oil level
<Min.–Max.> (From top of outer tube with inner
tube and damper rod fully compressed without
spring.)
Oil grade
Inner tube outer diameter
Front fork top end
Rear suspension:
Shock absorber travel
Spring free length
Fitting length
Preload length
<Min.–Max.>
Spring rate, STD
Optional spring
Enclosed gas pressure
Swingarm:
Swingarm free play limit
End
Wheel:
Front wheel type
Rear wheel type
Front rim size/material
Rear rim size/material
Rim runout limit:
Radial
Lateral
MAINTENANCE SPECIFICATIONS
Standard
Taper roller bearing
300 mm (11.8 in)
460 mm (18.1 in)
K = 4.4 N/mm (0.449 kg/mm, 25.1 lb/in)
Yes
3
648 cm
(22.8 lmp oz, 21.9 US oz)
132 mm (5.20 in)
95–150 mm (3.74–5.91 in)
Suspension oil "S1"
48 mm (1.89 in)
5 mm (0.20 in)
USA, CDN
AUS, NZ, ZA
130 mm (5.12
in)
260 mm (10.24
in)
249 mm (9.80
245.0 mm (9.65
in)
in)
1.5–13 mm
(0.06–0.51 in)
K = 52.0 N/mm
(5.30 kg/mm,
296.8 lb/in)
Yes
1,000 kPa (10
2
kg/cm
, 142
psi)
----
USA, CDN, ZA
Spoke wheel
Spoke wheel
21 × 1.60/Aluminum
18 × 1.85/Aluminum
----
----
2-9
EUROPE
248.5 mm (9.78
in)
AUS, NZ, EUROPE
18 × 2.15/Aluminum
----
----
Limit
----
----
455 mm (17.9
in)
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1.0 mm (0.04
in)
----
----
----
----
2.0 mm (0.08
in)
2.0 mm (0.08
in)

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