Honda CRF250R Owner's Manual page 73

Valve Clearance
3. Measure the exhaust valve clearance by
inserting a feeler gauge (1) between the
exhaust rocker arm (4) and shims (5).
(1) (5)
(1) feeler gauge
(4) exhaust rocker arm
(5) exhaust valve shims
Valve Clearance:
EX: 0.008 ± 0.001 in (0.21 ± 0.03 mm)
If intake valve clearance and exhaust valve
clearance need adjustment, see Camshaft Removal
(this page) and select the correct shim for each
valve.
70
Servicing Your Honda
Camshaft Removal
1. Record the intake valve and exhaust valve
(4)
clearances (page 69).
Make sure the piston is at TDC on the
compression stroke (page 68).
2. Remove the condenser stay mounting bolts (1).
(1) condenser stay mounting bolts
3. Remove the cam chain tensioner lifter cover
bolt (2) and sealing washer (3).
(2) cam chain tensioner lifter cover bolt
(3) sealing washer
(1)
(3)
(2)
4. Insert the tensioner stopper (4) into the cam
chain tensioner lifter (5).
Turn the tensioner stopper clockwise and lock
the cam chain tensioner lifter by pushing the
handle (6) into the notch on the cam chain
tensioner lifter.
• Tensioner stopper 070MG-0010100
07AMG-001A100
(USA only)
(6)
(5)
(4) tensioner stopper
(5) cam chain tensioner lifter
(6) handle
(4)