Honda CRF450R 2011 Owner's Manual page 87

Valve Clearance
8. Make sure that the timing mark (12) on the cam
sprocket aligns with the camshaft holder
mating surface (13) of the cylinder head.
Align
(13)
(12)
(12) timing mark
(13) camshaft holder mating surface
9. Make sure that the dowel pins (14) are installed
into the camshaft holder (15).
(14)
(15)
(14) dowel pins (15) camshaft holder
10. Install the set rings (16) on the camshaft
bearing grooves (17).
NOTICE
Do not let the set rings fall into the crankcase.
78
Servicing Your Honda
(16)
(17)
(16) set rings
(17) camshaft bearing grooves
11. Apply engine oil to the camshaft holder bolt
threads and seating surface.
Install the camshaft holder (18) with the "
mark (19) facing forward.
Tighten the camshaft holder bolts (20) (21) to
the specified torque:
14 N·m (1.4 kgf·m, 10 lbf·ft)
Tighten the camshaft holder bolts in a criss-cross
pattern in two or three steps.
(20)
(19)
(18) camshaft holder (20) camshaft holder bolts (long)
(19) " " mark (21) camshaft holder bolts (short)
12. Remove the tensioner stopper (22) from the
cam chain tensioner lifter.
(22) tensioner stopper
13. Make sure that the piston is at TDC on the
"
compression stroke (page 72).
Check that the timing mark (12) on the cam
sprocket aligns with the camshaft holder
mating surface (13) of the cylinder head.
If the timing mark doesn't align with the
camshaft holder mating surface, remove the
cam chain and realign the timing mark.
(18)
(21)
(12) timing mark
(13) camshaft holder mating surface
(22)
Align
(13)
(12)