Honda 2004 CRF250X Service Manual page 167

'04 - '06 California
Disconnect the vacuum hose from the boost joint.
type,
After '06:
Be careful not to let
the nuts and
washers fall into
the left crankcase
Remove the engine hanger plate bolts, nuts, plates
and washer.
Remove the cyl inder head mounting bolts.
Loosen the cylinder mounting bolt.
Loosen the cylinder head nuts in a crisscross pat-
tern in two or three steps.
Remove the nuts, washers and cylinder head.
CYLINDER HEADIVALVES
8-13