Honda CRF250R 2018 Owner's Manual page 76

6. Insert the tensioner stopper (8) into the cam
chain tensioner lifter (9).
Turn the tensioner stopper clockwise and lock
the cam chain tensioner lifter by pushing the
handle (10) to the cam chain tensioner lifter.
• Tensioner stopper 07AMG-001A100
(10)
(8)
(9)
(8) tensioner stopper
(9) cam chain tensioner lifter
(10) handle
7. Loosen the camshaft holder A bolts (11) and B
bolts (12) in a crisscross pattern in two or three
steps.
Remove the camshaft holder A bolts, B bolts,
washers (13), rocker arm shaft stopper bolt
(14) and camshaft holder (15).
NOTICE
Do not let the camshaft holder bolts washer and
rocker arm shaft stopper bolt fall into the
crankcase.
(11) (13)
(15) (12)
(11) camshaft holder A bolts
(12) camshaft holder B bolts
(13) washers
(14) rocker arm shaft stopper bolt
(15) camshaft holder
8. Remove the cam sprocket bolt (5) of the intake
camshaft.
NOTICE
Do not let the cam sprocket bolt fall into the
crankcase.
Valve Clearance
(5)
(5) cam sprocket bolt
9. Remove the intake camshaft (16) from the
intake cam sprocket (17).
Remove the intake cam sprocket and exhaust
(14)
camshaft (18) by removing the cam chain (19).
Suspend the cam chain with a piece of wire to
prevent the chain from falling into the crankcase.
NOTICE
Do not let the cam chain and intake cam sprocket
fall into the crankcase.
(17)
(16) intake camshaft
(17) intake cam sprocket
(18) exhaust camshaft
(19) cam chain
(16)
(19)
(18)
(cont'd)
71
Servicing Your Honda