Honda CRF450R 2006, Owner'S Manual

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Valve Clearance
62
Servicing Your Honda
8. Remove the stopper tool (15) from the cam
chain tensioner lifter.
(15) stopper tool
9. Rotate the primary drive gear bolt (crankshaft)
clockwise two turns and align the “punch”
mark (8) with the index mark (9). Make sure
that the timing marks (11) on the sprocket
align with the “
∆
” mark (12) on the camshaft
holder assembly.
If the timing mark doesn’t align with the “
∆
”
mark, remove the cam sprocket.
Then realign the valve timing.
(15)
(8) “punch” mark
(9) index mark
(11) timing marks
(12) “
∆
” mark
(8)
(12)
(9)
(11)
10. Measure the intake valve clearance and
exhaust valve clearance.
Valve Clearance:
IN: 0.006 ± 0.001 in (0.16 ± 0.03 mm)
EX: 0.011 ± 0.001 in (0.28 ± 0.03 mm)
11. Install the new sealing washer (17) and cam
chain tensioner lifter cover bolt (18).
(16)
(16)
(17) sealing washer
(18) cam chain tensioner lifter cover bolt
(18)
(17)
(16) feeler gauge