Honda CRF450RX 2020 Owner's Manual & Competition Handbook page 112

Damper Oil Change
1. Check the fork center bolt lock nut (1) is
installed on the fork damper piston rod (2)
properly.
If the lock nut was removed, the piston rod will fall
into the fork damper and you will not be able to
reassemble the fork damper.
(1)
(2)
(1) fork center bolt lock nut
(2) fork damper piston rod
2. Loosen the fork bolt assembly (3) while
holding the fork damper assembly (4).
(3)
(3) fork bolt assembly (4) fork damper assembly
3. Remove the fork bolt assembly (3) from the
fork damper threads and then pop it out by
pumping the fork damper piston rod (2)
slowly.
4. Remove the fork bolt assembly (3).
Be careful not to damage the fork bolt bushings (5).
Do not disassemble the fork bolt assembly.
Replace the fork bolt as an assembly if it is
damaged.
(2)
(2) fork damper piston rod (5) fork bolt bushings
(3) fork bolt assembly
5. Empty the fork oil from the fork damper
assembly (4) by pumping the damper rod
several times.
(4)
(4) fork damper assembly
6. Clean the fork bolt and fork damper assembly
threads (6).
(3)
(6) fork bolt and fork damper assembly threads
(5)
7. Extend the fork damper piston rod to
maximum length.
Pour the recommended fork oil into the fork
damper assembly (4).
Recommended Oil:
Pro Honda HP Fork Oil, A15-00
Recommended Amount:
8.4 US oz (248 cm
(4)
(4) fork damper assembly
Suspension
3 )
(4)
Servicing Your Honda
(6)
(cont'd)
107