Honda CRF450R Owner's Manual page 37

Install the cam shaft holder assembly onto the cylinder
head with the intake cam lobes facing up as illustrated
below.
Apply the oil to the camshaft holder assembly bolt
threads and seating surface.
Install the camshaft holder assmebly bolts.
TORQUE: 10 lbf ft (14 N m, 1.4 kgf m)
NOTE:
• Tighten the camshaft holder assembly bolts in a
criss-cross pattern in 2 or 3 steps.
(1) CAMSHAFT HOLDER ASSEMBLY
(2) CAMSHAFT HOLDER ASSEMBLY BOLTS
(3) INTAKE CAM LOBES
Insert the feeler gauge between the intake valve lifter
and cam lobe.
If the feeler gauge cannot be inserted, the shim is caught
between the valve lifter and the valve retainer. Remove
the camshaft holder assembly, place the shim correctly,
and reinstall the camshaft holder assembly.
Rotate the primary drive gear lock bolt (crankshaft)
clockwise and align the "T" mark with the index mark.
1
(1) PRIMARY DRIVE GEAR LOCK BOLT
(2) "T" MARK
(3) INDEX MARK
3
Place the cam sprocket and align the timing mark on
the cam sprocket with the
holder assembly.
Install the cam chain over the sprocket without rotating
the sprocket.
2
3
(1) CAM SPROCKET
(2) TIMING MARK
(3)
(4) CAM CHAIN
mark on the camshaft
MARK
35