Honda CRF450X 2017 Owner's Manual & Competition Handbook page 74

6. Make sure the piston is at TDC (Top Dead
Center) on the compression stroke.
Loosen the camshaft holder assembly bolts
(7) in a crisscross pattern in two or three
steps.
Remove the camshaft holder assembly bolts,
camshaft holder assembly (8), intake valve
lifters and shims.
• As you remove the camshaft holder assembly,
the intake valve lifters and intake valve
shims may be sticking in the camshaft holder
assembly.
• Keep the intake valve lifters and the shims
separate so you can easily identify the
originally installed location such as intake or
exhaust, right or left.
(7)
(8)
(7) camshaft holder assembly bolts
(8) camshaft holder assembly
NOTICE
Do not let the valve lifters, shims, decompressor
shaft and plunger fall into the crankcase.
17 CRF450X̲31MEY710.indb 69 17 CRF450X̲31MEY710.indb 69
7. Remove the intake valve lifters (9),
decompressor shaft (10) and plunger (11).
(9)
(11)
(9) intake valve lifters
(10) decompressor shaft
(11) plunger
8. Remove the valve shims (12).
(12) valve shims
(10)
Valve Clearance
(12)
69
Servicing Your Honda
2016/06/08 11:45:51 2016/06/08 11:45:51