Honda CRF250R 2018 Owner's Manual page 81

Valve Clearance
19. Remove the cam sprocket bolt (23).
Apply locking agent to the bolt threads.
Install the cam sprocket bolt to the intake cam
sprocket (17), and tighten the cam sprocket
bolt to the specified torque:
15 lbf·ft (20 N·m, 2.0 kgf·m)
NOTICE
Do not let the cam sprocket bolt fall into the
crankcase.
(23)
0.14 ± 0.03 in (3.5 ± 1.0 mm)
locking agent
0.02 - 0.06 in (0.5 - 1.5 mm)
(17) intake cam sprocket (23) cam sprocket bolt
20. Rotate the crankshaft by turning the flywheel
(34) counterclockwise until the decompressor
weight (5) faces up as illustrated below.
(34)
(5) decompressor weight (34) flywheel
76
Servicing Your Honda
21. Clean the threads of the cam sprocket bolt (23)
and intake cam sprocket (17) thoroughly.
Apply locking agent to the bolt threads.
Install and tighten the cam sprocket bolt to the
specified torque:
15 lbf·ft (20 N·m, 2.0 kgf·m)
NOTICE
Do not let the cam sprocket bolt fall into the
crankcase.
(23)
(17)
0.14 ± 0.03 in (3.5 ± 1.0 mm)
locking agent
0.02 - 0.06 in (0.5 - 1.5 mm)
(5)
(17) intake cam sprocket
(23) cam sprocket bolt
22. Install the cam chain guide (35) with the "
mark (36) facing forward.
Install and tighten the cam chain guide bolts
(37) to the specified torque:
7 lbf·ft (10 N·m, 1.0 kgf·m)
NOTICE
Do not let the cam chain guide bolts fall into the
crankcase.
(17)
(37)
(35) cam chain guide
(36) " " mark
23. Rotate the camshaft by rotating the flywheel
counterclockwise several times.
24. Measure the intake and exhaust valve
clearances (page 69).
"
(36) (35)
(37) cam chain guide bolts