Yamaha YZ450F(D) Owner's Service Manual page 39

CHASSIS
Item
Steering system:
Steering bearing type
Front suspension:
Front fork travel
Fork spring free length
Spring rate, STD
Optional spring
Oil capacity
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
Drive chain:
Type/manufacturer
Number of links
Chain slack
Chain length (15 links)
MAINTENANCE SPECIFICATIONS
Standard
Taper roller bearing
USA, CDN
310 mm (12.2 in)
470.0 mm (18.5 in)
K = 4.6 N/mm (0.469 kg/
mm, 26.3 lb/in)
Yes
3
551 cm (19.4 lmp oz,
18.63 US oz)
Suspension oil "S1"
48 mm (1.89 in)
0 mm (0 in)
USA, CDN
132.0 mm (5.20 in)
260.0 mm (10.24 in)
250.0 mm (9.84 in)
1.5–18 mm (0.06–0.71
in)
K = 56.0 N/mm (5.7 kg/
mm, 319.2 lb/in)
Yes
2
1,000 kPa (10 kg/cm ,
142 psi)
----
Spoke wheel
Spoke wheel
21 × 1.60/Aluminum
19 × 2.15/Aluminum
----
----
DID520DMA2 SDH/DAIDO
113 links + joint
50–60 mm (2.0–2.4 in)
----
2-9
EUROPE, AUS, NZ, ZA
←
←
←
←
←
←
←
←
EUROPE, AUS, NZ, ZA
←
←
246.0 mm (9.69 in)
←
K = 54.0 N/mm (5.5 kg/
mm, 308.0 lb/in)
←
←
Limit
----
----
465.0 mm
(18.3 in)
----
----
----
----
----
----
----
254.8 mm
(10.03 in)
----
----
----
----
1.0 mm (0.04
in)
----
----
----
----
2.0 mm (0.08
in)
2.0 mm (0.08
in)
----
----
----
242.9 mm
(9.563 in)