Honda CRF250R 2005 Owner's Manual page 68

Piston/Piston Rings/Piston Pin
13.Remove the engine hanger nuts (8) and engine
hanger plates (9).
(8)
(8) engine hanger nuts
(9) engine hanger plates
64
Servicing Your Honda
14.Remove the cylinder head bolts (10).
15.Loosen the cylinder bolt (11).
(9)
(10) cylinder head bolts
(11) cylinder bolt
Loosen the nuts in a criss-cross pattern in 2 or 3
steps.
NOTICE
Do not let the nuts, washers, valve lifters, shims,
and cam chain fall into the crankcase.
16.Remove the cylinder head nuts, washers (12)
and cylinder head (13).
(12) cylinder head nuts/washers
(13) cylinder head
(10)
(11)
(12)
(13)
17.Remove the dowel pins (14), cylinder head
gasket (15) and cam chain guide (16).
NOTICE
Do not let the dowel pins and cam chain fall into
the crankcase.
(14)
(14) dowel pins (16) cam chain guide
(15) cylinder head gasket
(15)
(16)