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Suspension
Recommended Fork Oil
viscosity (weight) 5 W
suggested oil
Honda ULTRA CUSHION OIL
SPECIAL or equivalent
Fork Oil Change
Refer to Front Suspension Disassembly on
page 113.
1. Clean the fork assembly, especially the sliding
surface of the slider and dust seal.
2. Record the rebound damping adjuster position
and turn the adjuster counterclockwise until it
stops.
3. Hold the outer tube (1), then remove the fork
damper (2) from the outer tube using the lock
nut wrench (3). Gently slide the outer tube
down onto the lower end of the slider (4).
(2)
(1)
(1)
(3)
(1) outer tube
(3) lock nut wrench
(2) fork damper
(4) slider, lower end
86
Servicing Your Honda
HONDA O/M CRF450X (Eu) 3RMEY620 00X3R-MEY-6200
NOTICE
The outer tube (1) can drop on the slider (5) and
damage the fork dust seal (6) and guide bushing
(7) when the fork damper is removed. To avoid
damage hold both the outer tube and slider when
removing the fork damper.
(6)
(5)
(1) outer tube
(6) fork dust seal
(5) slider
(7) guide bushing
4. Drain the fork oil from the outer tube (1).
Drain the fork oil from the oil holes (8) of the
fork damper.
(1)
(4)
(1) outer tube
(8) oil holes
5. Drain the fork oil by turning the outer tube (1)
upside down. (About 12 cm
0.4 Imp oz) of fork oil will be left in the outer
tube when it is left inverted for about
20 minutes at 20°C/68°F.)
(7)
(1) outer tube
(1)
Pour the drained oil into a suitable container and
dispose of it in an approved manner (page 151).
NOTICE
Improper disposal of drained oil is harmful to the
environment.
Amount of fork oil left in the fork
(within damper and spring)
(8)
minute
5
10
°C/°F
30/86
27
15.3
20/68
29.4
16.5
10/50
28.2
21.2
0/32
30.6
22.4
(cm
3
)
(0.4 US oz,
3
(1)
unit: cm
3
20
35
55
85
145
10.6
9.4
8.3
7.9
7.9
11.8
10.6
9.4
8.2
8.2
16.5
15.3
12.9
11.8
11.8
18.8
16.5
16.5
15.3
14.1
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