Yamaha YZ450F 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 mm (18.5 in)
K = 4.6 N/mm (0.469 kg/
mm, 26.3 lb/in)
Yes
3
544 cm (19.1 lmp oz,
18.4 US oz)
Suspension oil "S1"
48 mm (1.89 in)
Zero mm (Zero in)
USA, CDN
132.0 mm (5.20 in)
260 mm (10.24 in)
252 mm (9.92 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
←
←
253 mm (9.96 in)
←
←
←
←
Limit
----
----
465 mm (18.3
in)
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----
----
----
----
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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)