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Honda CRF450RL 2021 Owner's Manual & Off-Road Handbook page 97

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Recheck the length between the fork center bolt lock nut
[1] end and piston rod [2] end is in the standard value.
STANDARD: 11 – 12 mm (0.43 – 0.47 in)
Apply recommended fork oil to a new O-ring.
Install the O-ring [3] to the fork center bolt [4].
Install the fork center bolt to the piston rod.
• Align the each flat-side of the fork center bolt adjusting
rod and push rod.
Tighten the fork center bolt fully by hand.
[1]
11 – 12 mm
(0.43 – 0.47 in)
Measure the clearance between the fork center bolt lock
nut [1] and fork center bolt [2].
STANDARD: 1.0 – 2.0 mm (0.04 – 0.08 in)
If the clearance is out of specification, reinstall the lock
nut and center bolt.
1.0 – 2.0 mm
(0.04 – 0.08 in)
[2]
Align
[4]
[3]
[1]
[2]
Tighten the fork center bolt lock nut [1] by hand until it
touches the fork center bolt [2].
Tighten the lock nut to the specified torque.
TORQUE: 28 N·m (2.9 kgf·m, 21 lbf·ft)
• Tighten the fork center bolt lock nut with specified
torque by tightening the fork center bolt / piston rod
while holding the fork center bolt lock nut.
Clean and apply locking agent to the fork center bolt
threads.
Remove the piston base [3] or mechanic's stopper tool
while pushing the outer tube.
• Be careful not to damage the piston rod.
[1]
[2]
Install and tighten the fork center bolt [1] to the specified
torque.
TORQUE: 69 N·m (7.0 kgf·m, 51 lbf·ft)
Remove the fork from the vice.
Maintenance
[3]
[1]
2-71

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