Honda CRF250X 2006 Owner's Manual & Competition Handbook page 84

Piston/Piston Rings/Piston Pin
2. Route the cam chain through the cylinder
head (3).
Install the cylinder head.
NOTICE
Do not damage mating surfaces when installing
the cylinder head.
3. Apply engine oil to all cylinder head nut
threads.
Install the washers and cylinder head nuts (4).
Tighten the cylinder head nuts to the specified
torque:
29 lbf·ft (39 N·m, 4.0 kgf·m)
NOTICE
Do not let the washers and nuts fall into the
crankcase.
Tighten the cylinder head nuts in a criss-cross
pattern in 2 or 3 steps.
(4)
(3) cylinder head
(4) cylinder head nuts/washers
80
Servicing Your Honda
4. Install the cylinder bolt (5) and cylinder head
bolts (6) and tighten them to the specified
torque:
7 lbf·ft (10 N·m, 1.0 kgf·m)
(5) cylinder bolt
(6) cylinder head bolts
(3)
5. Install the engine hanger plates (7), engine
hanger nuts, bolts (8) of the frame side and
engine hanger nut (9) of the engine side.
Tighten the engine hanger nut to the specified
torque:
(6) frame side: 25 lbf·ft (34 N·m, 3.5 kgf·m)
engine side: 40 lbf·ft (54 N·m, 5.5 kgf·m)
(5)
(7) engine hanger plate
(8) engine hanger nuts/bolts of the frame side
(9) engine hanger nut/bolts of the engine side
(7)
(8)
(9)