Honda CRF450R 2017 Owner's Manual & Competition Handbook page 105

Suspension
10. Measure the clearance between the fork center
bolt lock nut (2) and fork center bolt (17).
Standard: 0.06 – 0.08 in (1.5 – 2.0 mm)
If the clearance is out of specification, check the
fork center bolt lock nut and fork center bolt
installation.
0.06 – 0.08 in
(1.5 – 2.0 mm)
(2) fork center bolt lock nut (17) fork center bolt
100
Servicing Your Honda
11. Tighten the fork center bolt lock nut (2) to the
fork center bolt (17) closely by hand. Tighten
the fork center bolt lock nut to the specified
torque:
21 lbf·ft (28 N·m, 2.9 kgf·m)
(2)
(2)
(17)
(2) fork center bolt lock nut
(17)
(17) fork center bolt
12. Apply locking agent to the fork center bolt
threads.
Remove the piston base or mechanic's stopper
tool while pushing the fork damper.
Install the fork center bolt (17) to the axle
holder and tighten it to the specified torque:
51 lbf·ft (69 N·m, 7.0 kgf·m)
(17)
(17) fork center bolt
13. Remove the fork from the vice.
14. Measure the length between the axle holder
and outer tube.
Standard: 12.2 ± 0.1 in (311 ± 2 mm)
15. Compare the length (18) at assembly and at
disassembly. They should be the same length.
If the length at assembly is longer than at
disassembly, check the fork center bolt and fork
center bolt lock nut installation.
(18)
(18) length
16. Refilling the fork oil (page 89).
17. Install the front suspension (page 89).