Honda 2007 CRF250R, Owner'S Manual

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62
Servicing Your Honda
Valve Clearance
6. Apply grease to the set rings (11) and install it
onto the camshaft holders (12).
(12) camshaft holders
(13) intake cam lobes
(14) camshaft holder bolts
10. Rotate the camshaft by rotating the crankshaft
clockwise several times.
11. Insert the feeler gauge (18) 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
holders, place the shim correctly, and reinstall
the camshaft holders.
Valve Clearances:
IN: 0.005 ± 0.001 in (0.12 ± 0.03 mm)
EX: 0.011 ± 0.001 in (0.28 ± 0.03 mm)
(18) feeler gauge
(14)
(14)
(12)
(13)
(18) (18)
8. Remove the tensioner stopper (15) from the
cam chain tensioner lifter.
(15)
(15) tensioner stopper
9. Install a new sealing washer (16) and tighten
the cam chain tensioner lifter cover bolt (17).
(16) sealing washer
(17) cam chain tensioner lifter cover bolt
(16)
(17)
(11) set ring
(12) camshaft holder
7. Install the camshaft holders (12) onto the
cylinder head with the intake cam lobes (13)
facing up as illustrated below.
Apply oil to the camshaft holder bolt threads
and seating surface.
Tighten the camshaft holder bolts (14) to the
specified torque:
12 lbf·ft (16 N·m, 1.6 kgf·m)
Tighten the camshaft holder bolts in a criss-cross
pattern in two or three steps.
(12)
(11)
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