Fork Assembly - Honda 2009 CRF450X Owner's Manual & Competition Handbook

Front Suspension Adjustments

Fork Assembly

1. Drain the fork oil from the fork assembly (1)
by placing it upside down.
(About 7 cm 3 (0.2 US oz, 0.2 Imp oz) of fork
oil will be left in the fork assembly when it is
left inverted for about 20 minutes at 20°C
(68°F))
(1)
(1) fork assembly
To properly dispose of drained fluids, refer to
You & the Environment (page 151).
NOTICE
Improper disposal of drained fluids is harmful to
the environment.
120
Adjustments for Competition
HONDA O/M CRF450X (Eu) 3RMEY620 00X3R-MEY-6200
Amount of fork oil left in the fork
(without damper and spring)
minute
5 10 20 35 55 85
°C/°F
30/86 7.1 5.9 4.7 4.2 3.5 3.5
20/68 10.6 8.2 7.1 5.9 5.6 4.7
10/50 11.8 8.3 7.2 6.2 5.8 4.9
0/32 12.9 10.6 9.4 8.2 7.9 7.1
(cm 3 )
2. Tighten the fork centre bolt lock nut (2) fully
unit: cm 3 and measure the thread length (A) as shown.
145
Standard: 11 – 13 mm (0.4 – 0.5 in)
3.5
Wipe the oil completely off the fork damper.
4.7
4.8
5.9
(A)
(2) fork centre bolt lock nut (A) thread length
3. Blow out the oil completely off the fork
spring (3) using the compressed air.
Install the fork spring.
Install the fork damper assembly (4) to the
fork assembly (1).
(1)
(1) fork assembly (4) fork damper assembly
(3) fork spring
(2)
(4)
(3)