Honda 450X 2005 Owner's Manual & Competition Handbook page 73

4. Remove the cam sprocket bolt (4).
Rotate the primary drive gear bolt (crankshaft)
clockwise one turn and remove the other
sprocket bolt (4) and cam sprocket (5). Then
attach a piece of wire to the cam chain (6) to
prevent it from falling into the crankcase.
NOTICE
Do not let the bolts, sprocket and cam chain fall
into the crankcase.
(6)
(5)
(4) cam sprocket bolts
(5) cam sprocket
(6) cam chain
5. Make sure the piston is at TDC (Top Dead
Center) on the compression storoke. Loosen
the camshaft holder bolts (7) in a crisscross
pattern in 2–3 steps.
6. Remove the camshaft holder bolts and
camshaft holder assembly (8).
The intake valve lifter and intake valve shim
may be sticking in the camshaft holder
assembly.
Keep the intake valve lifters and the shims so as
to allow identification of the originally installed
location such as intake or exhaust, right or left.
(4)
(8)
(7) bolts
(8) camshaft holder assembly
7. Remove the intake valve lifters (9) and shims
(10).
NOTICE
Do not let the valve lifters and shims fall into the
crankcase.
(7)
(9) intake valve lifters
(10) shims
Valve Clearance
(9)
(10)
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Servicing Your Honda