Honda CRF450R Owner's Manual page 89

Fork Assembly
Drain the fork oil from the outer tube/slider by placing
it upside down.
(About 7 cc of fork oil will be left in the outer tube/slider
when it is left inverted for about 20 minutes at 20°C)
(1) OUTER TUBE/SLIDER
Amount of fork oil left in the fork
(without damper and spring)
minute
5 10 20 35
°C/°F
30/86 7.1 5.9 4.7 4.2
20/68 10.6 8.2 7.1 5.9
10/50 11.8 8.3 7.2 6.2
0/32 12.9 10.6 9.4 8.2
Tighten the lock nut fully and measure the thread length
as shown.
unit: cc
STANDARD: 0.43 – 0.51 in (11 – 13 mm)
55 85 145
Wipe the oil completely off the fork damper.
3.5 3.5 3.5
5.6 4.7 4.7
5.8 4.9 4.8
7.9 7.1 5.9
(1) LOCK NUT
Wipe the oil completely off the fork spring.
Install the fork spring.
Install the fork damper to the outer tube/slider.
(1) SPRING
(2) FORK DAMPER ASSEMBLY
(3) OUTER TUBE/SLIDER
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