Chassis - Yamaha WR450F(Y) 2009 Owner's Service Manual

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
USA, CDN
300 mm (11.8 in)
460 mm (18.1 in)
K = 4.5 N/mm (0.459 kg/
mm, 25.7 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)
Zero mm (Zero in)
USA, CDN, AUS, NZ,
ZA
130 mm (5.12 in)
260 mm (10.24 in)
252.5 mm (9.94 in)
1.5–13 mm (0.06–0.51
in)
K = 54.0 N/mm (5.50 kg/
mm, 308.0 lb/in)
Yes
2
1,000 kPa (10 kg/cm ,
142 psi)
----
Spoke wheel
Spoke wheel
21 × 1.60/Aluminum
18 × 2.15/Aluminum
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2-9
EUROPE, AUS, NZ, ZA
←
←
←
←
3
655 cm (23.1 lmp oz,
22.1 US oz)
125 mm (4.92 in)
←
←
←
←
EUROPE
←
←
251.5 mm (9.90 in)
←
←
←
←
Limit
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455 mm (17.9
in)
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1.0 mm (0.04
in)
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2.0 mm (0.08
in)
2.0 mm (0.08
in)