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Yamaha WR450FX Owner's Service Manual page 34

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Lubrication system:
Oil filter type
Oil pump type
Tip clearance
Side clearance
Housing and rotor clearance
Bypass valve setting pressure
Cooling:
Radiator core size
Width
Height (Left/Right)
Thickness
Radiator cap opening pressure
Radiator capacity (total)
Water pump
Type
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
<Min.–Max.>
Spring rate, STD
Optional spring
Enclosed gas pressure
Item
Taper roller bearing
300 mm (11.8 in)
460 mm (18.1 in)
K = 4.5 N/mm (0.459 kg/
mm, 25.7 lb/in)
Yes
648 cm
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)
130 mm (5.12 in)
260 mm (10.24 in)
252.5 mm (9.94 in)
238.5–258.5 mm (9.39–10.18 in)
K = 54.0 N/mm (5.50 kg/mm, 308.0 lb/in)
Yes
1,000 kPa (10 kg/cm
MAINTENANCE SPECIFICATIONS
Standard
Paper type
Trochoid type
0.12 mm or less (0.0047 in or less)
0.09–0.17 mm (0.0035–0.0067 in)
0.03–0.10 mm (0.0012–0.0039 in)
40–80 kPa (0.4–0.8 kg/cm
psi)
120.2 mm (4.73 in)
260 mm (10.24 in)/240 mm (9.45 in)
22 mm (0.87 in)
2
110 kPa (1.1 kg/cm
, 15.6 psi)
0.57 L (0.50 Imp qt, 0.60 US qt)
Single-suction centrifugal pump
Standard
CDN
3
(22.8 lmp oz,
655 cm
22.1 US oz)
125 mm (4.92 in)
2
, 142 psi)
2-9
Limit
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0.20 mm (0.008
in)
0.24 mm (0.009
in)
0.17 mm
(0.0067 in)
2
, 5.69–11.38
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Limit
----
AUS, NZ, ZA
----
455 mm (17.9
in)
----
----
3
(23.1 lmp oz,
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