Fork Assembly - Honda CRF450R 2009 Owner's Manual & Competition Handbook

Front Suspension Adjustments
15. Drain the extra oil from the oil holes (7) of
the fork damper oil chamber (8).
By doing above procedure, about 0.3 US oz (10
cm ) of fork fluid will be drained from the
3
damper oil chamber through the oil hole and
cause 6.8 US oz (201 cm ) of fork fluid to be left
3
in the chamber.
(8)
(7) oil holes (8) fork damper oil chamber
Pour the drained oil into a suitable container and
dispose of it in an approved manner (page 140).
NOTICE
Improper disposal of drained fluids is harmful to
the environment.
116
Adjustments for Competition

Fork Assembly

1. Drain the fork oil from the fork assembly (1)
by placing it upside down.
(About 0.3 US oz (9.8 cm
left in the outer tube/slider when it is left
inverted for about 20 minutes at 68°F/20°C)
(7)
(1)

(1) fork assembly

To properly dispose of drained fluids, refer to
You & the Environment (page 140).
NOTICE
Improper disposal of drained fluids is harmful to
the environment.
32°F/0°C
3 ) of fork oil will be
50°F/10°C
68°F/20°C
86°F/30°C
2. Tighten the fork center bolt lock nut (2) fully
and measure the thread length (A) as shown.
Standard: 0.6 – 0.7 in (16 – 18 mm)
Wipe the oil completely off the fork damper.
(2)
(2) fork center bolt lock nut (A) thread length
3. Blow out the oil completely off the fork
spring (3) using compressed air.
Install the fork spring and spring retainer (4)
to the fork damper assembly (5).
Install the fork damper assembly to the fork
assembly (1).
(4)
(1)
(1) fork assembly (4) spring retainer
(3) fork spring (5) fork damper assembly
(A)
(5)
(3)